/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float-rounding1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 05:15:20,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 05:15:20,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 05:15:20,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 05:15:20,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 05:15:20,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 05:15:20,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 05:15:20,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 05:15:20,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 05:15:20,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 05:15:20,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 05:15:20,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 05:15:20,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 05:15:20,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 05:15:20,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 05:15:20,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 05:15:20,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 05:15:20,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 05:15:20,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 05:15:20,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 05:15:20,569 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 05:15:20,586 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 05:15:20,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 05:15:20,587 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 05:15:20,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 05:15:20,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 05:15:20,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 05:15:20,589 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 05:15:20,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 05:15:20,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 05:15:20,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 05:15:20,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 05:15:20,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 05:15:20,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 05:15:20,590 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 05:15:20,590 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 05:15:20,590 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 05:15:20,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 05:15:20,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 05:15:20,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 05:15:20,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 05:15:20,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 05:15:20,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:15:20,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 05:15:20,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 05:15:20,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 05:15:20,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 05:15:20,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 05:15:20,591 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 05:15:20,592 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 05:15:20,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 05:15:20,592 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 05:15:20,592 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 05:15:20,593 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 05:15:20,593 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 05:15:20,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 05:15:20,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 05:15:20,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 05:15:20,836 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 05:15:20,836 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 05:15:20,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float-rounding1.i [2022-01-11 05:15:20,902 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70b598d31/df8fc257c46c46a59d68a819cf837344/FLAG863cbd5f4 [2022-01-11 05:15:21,373 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 05:15:21,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float-rounding1.i [2022-01-11 05:15:21,390 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70b598d31/df8fc257c46c46a59d68a819cf837344/FLAG863cbd5f4 [2022-01-11 05:15:21,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70b598d31/df8fc257c46c46a59d68a819cf837344 [2022-01-11 05:15:21,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 05:15:21,407 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 05:15:21,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 05:15:21,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 05:15:21,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 05:15:21,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:15:21" (1/1) ... [2022-01-11 05:15:21,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25a201fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:15:21, skipping insertion in model container [2022-01-11 05:15:21,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:15:21" (1/1) ... [2022-01-11 05:15:21,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 05:15:21,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:15:21,863 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float-rounding1.i[42829,42842] [2022-01-11 05:15:21,866 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float-rounding1.i[42946,42959] [2022-01-11 05:15:21,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:15:21,880 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 05:15:21,905 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float-rounding1.i[42829,42842] [2022-01-11 05:15:21,906 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float-rounding1.i[42946,42959] [2022-01-11 05:15:21,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:15:21,980 INFO L208 MainTranslator]: Completed translation [2022-01-11 05:15:21,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:15:21 WrapperNode [2022-01-11 05:15:21,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 05:15:21,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 05:15:21,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 05:15:21,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 05:15:21,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:15:21" (1/1) ... [2022-01-11 05:15:22,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:15:21" (1/1) ... [2022-01-11 05:15:22,037 INFO L137 Inliner]: procedures = 461, calls = 12, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 110 [2022-01-11 05:15:22,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 05:15:22,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 05:15:22,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 05:15:22,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 05:15:22,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:15:21" (1/1) ... [2022-01-11 05:15:22,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:15:21" (1/1) ... [2022-01-11 05:15:22,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:15:21" (1/1) ... [2022-01-11 05:15:22,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:15:21" (1/1) ... [2022-01-11 05:15:22,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:15:21" (1/1) ... [2022-01-11 05:15:22,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:15:21" (1/1) ... [2022-01-11 05:15:22,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:15:21" (1/1) ... [2022-01-11 05:15:22,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 05:15:22,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 05:15:22,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 05:15:22,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 05:15:22,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:15:21" (1/1) ... [2022-01-11 05:15:22,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:15:22,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:15:22,099 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) [2022-01-11 05:15:22,109 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 [2022-01-11 05:15:22,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 05:15:22,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 05:15:22,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 05:15:22,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 05:15:22,208 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 05:15:22,209 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 05:15:22,341 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 05:15:22,346 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 05:15:22,347 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 05:15:22,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:15:22 BoogieIcfgContainer [2022-01-11 05:15:22,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 05:15:22,349 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 05:15:22,349 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 05:15:22,350 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 05:15:22,353 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:15:22" (1/1) ... [2022-01-11 05:15:22,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:15:22 BasicIcfg [2022-01-11 05:15:22,422 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 05:15:22,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 05:15:22,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 05:15:22,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 05:15:22,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 05:15:21" (1/4) ... [2022-01-11 05:15:22,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387975b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:15:22, skipping insertion in model container [2022-01-11 05:15:22,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:15:21" (2/4) ... [2022-01-11 05:15:22,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387975b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:15:22, skipping insertion in model container [2022-01-11 05:15:22,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:15:22" (3/4) ... [2022-01-11 05:15:22,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387975b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:15:22, skipping insertion in model container [2022-01-11 05:15:22,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:15:22" (4/4) ... [2022-01-11 05:15:22,445 INFO L111 eAbstractionObserver]: Analyzing ICFG float-rounding1.iTransformedIcfg [2022-01-11 05:15:22,450 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 05:15:22,450 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-11 05:15:22,520 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 05:15:22,532 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 05:15:22,532 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-11 05:15:22,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 40 states have (on average 1.65) internal successors, (66), 44 states have internal predecessors, (66), 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) [2022-01-11 05:15:22,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-11 05:15:22,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:15:22,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-11 05:15:22,558 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 05:15:22,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:15:22,568 INFO L85 PathProgramCache]: Analyzing trace with hash 912708136, now seen corresponding path program 1 times [2022-01-11 05:15:22,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:15:22,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895490174] [2022-01-11 05:15:22,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:15:22,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:15:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:15:22,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:15:22,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:15:22,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895490174] [2022-01-11 05:15:22,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895490174] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:15:22,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:15:22,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:15:22,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762542855] [2022-01-11 05:15:22,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:15:22,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:15:22,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:15:22,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:15:22,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:15:22,880 INFO L87 Difference]: Start difference. First operand has 45 states, 40 states have (on average 1.65) internal successors, (66), 44 states have internal predecessors, (66), 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) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-01-11 05:15:22,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:15:22,962 INFO L93 Difference]: Finished difference Result 99 states and 138 transitions. [2022-01-11 05:15:22,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:15:22,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2022-01-11 05:15:22,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:15:22,977 INFO L225 Difference]: With dead ends: 99 [2022-01-11 05:15:22,978 INFO L226 Difference]: Without dead ends: 50 [2022-01-11 05:15:22,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:15:22,983 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 27 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:15:22,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 76 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:15:22,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-11 05:15:23,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2022-01-11 05:15:23,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 36 states have internal predecessors, (44), 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) [2022-01-11 05:15:23,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2022-01-11 05:15:23,021 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 6 [2022-01-11 05:15:23,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:15:23,021 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2022-01-11 05:15:23,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-01-11 05:15:23,022 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-01-11 05:15:23,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-11 05:15:23,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:15:23,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:15:23,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 05:15:23,025 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 05:15:23,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:15:23,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1769868394, now seen corresponding path program 1 times [2022-01-11 05:15:23,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:15:23,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621018458] [2022-01-11 05:15:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:15:23,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:15:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-11 05:15:23,072 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-11 05:15:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-11 05:15:23,119 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-11 05:15:23,120 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-11 05:15:23,121 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-11 05:15:23,123 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-01-11 05:15:23,124 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-01-11 05:15:23,124 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-01-11 05:15:23,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 05:15:23,134 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-11 05:15:23,137 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-11 05:15:23,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:15:23 BasicIcfg [2022-01-11 05:15:23,159 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-11 05:15:23,160 INFO L158 Benchmark]: Toolchain (without parser) took 1752.45ms. Allocated memory was 172.0MB in the beginning and 239.1MB in the end (delta: 67.1MB). Free memory was 113.5MB in the beginning and 128.9MB in the end (delta: -15.4MB). Peak memory consumption was 51.6MB. Max. memory is 8.0GB. [2022-01-11 05:15:23,160 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 172.0MB. Free memory is still 131.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-11 05:15:23,163 INFO L158 Benchmark]: CACSL2BoogieTranslator took 571.86ms. Allocated memory was 172.0MB in the beginning and 239.1MB in the end (delta: 67.1MB). Free memory was 113.4MB in the beginning and 179.8MB in the end (delta: -66.4MB). Peak memory consumption was 18.6MB. Max. memory is 8.0GB. [2022-01-11 05:15:23,163 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.89ms. Allocated memory is still 239.1MB. Free memory was 179.8MB in the beginning and 176.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-11 05:15:23,165 INFO L158 Benchmark]: Boogie Preprocessor took 24.54ms. Allocated memory is still 239.1MB. Free memory was 176.7MB in the beginning and 175.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-11 05:15:23,166 INFO L158 Benchmark]: RCFGBuilder took 285.50ms. Allocated memory is still 239.1MB. Free memory was 175.6MB in the beginning and 162.0MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-01-11 05:15:23,166 INFO L158 Benchmark]: IcfgTransformer took 73.23ms. Allocated memory is still 239.1MB. Free memory was 162.0MB in the beginning and 157.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-01-11 05:15:23,166 INFO L158 Benchmark]: TraceAbstraction took 735.76ms. Allocated memory is still 239.1MB. Free memory was 157.3MB in the beginning and 128.9MB in the end (delta: 28.3MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-01-11 05:15:23,172 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 172.0MB. Free memory is still 131.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 571.86ms. Allocated memory was 172.0MB in the beginning and 239.1MB in the end (delta: 67.1MB). Free memory was 113.4MB in the beginning and 179.8MB in the end (delta: -66.4MB). Peak memory consumption was 18.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.89ms. Allocated memory is still 239.1MB. Free memory was 179.8MB in the beginning and 176.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.54ms. Allocated memory is still 239.1MB. Free memory was 176.7MB in the beginning and 175.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 285.50ms. Allocated memory is still 239.1MB. Free memory was 175.6MB in the beginning and 162.0MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * IcfgTransformer took 73.23ms. Allocated memory is still 239.1MB. Free memory was 162.0MB in the beginning and 157.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * TraceAbstraction took 735.76ms. Allocated memory is still 239.1MB. Free memory was 157.3MB in the beginning and 128.9MB in the end (delta: 28.3MB). Peak memory consumption was 28.3MB. 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: 1103]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_fp at line 1119, overapproximation of fp.eq at line 1103, overapproximation of fp.add at line 1102. Possible FailurePath: [L1119] float f1 = 0x1.0p+0; [L1120] float f2 = 0x1.8p-24; [L1123] CALL roundingTest(f1,f2) [L1099] FCALL fesetround(0) [L1102] float roundToNearestSum = f1 + f2; [L1103] COND TRUE !(roundToNearestSum == 0x1.000002p+0f) [L1103] reach_error() - UnprovableResult [Line: 1110]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1103]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1110]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 45 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 76 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 60 mSDtfsCounter, 20 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 13 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-01-11 05:15:23,199 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...