/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float20.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:14:02,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:14:02,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:14:02,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:14:02,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-01 00:14:02,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-01 00:14:02,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-01 00:14:02,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-01 00:14:03,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-01 00:14:03,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-01 00:14:03,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-01 00:14:03,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-01 00:14:03,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-01 00:14:03,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-01 00:14:03,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-01 00:14:03,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-01 00:14:03,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-01 00:14:03,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:14:03,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:14:03,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:14:03,060 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-01 00:14:03,068 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:14:03,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:14:03,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:14:03,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:14:03,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:14:03,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:14:03,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:14:03,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:14:03,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:14:03,070 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:14:03,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:14:03,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:14:03,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:14:03,071 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:14:03,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:14:03,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:14:03,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:14:03,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:14:03,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:14:03,072 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:14:03,072 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:14:03,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:14:03,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:14:03,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:14:03,282 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:14:03,283 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:14:03,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float20.i [2022-02-01 00:14:03,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/445484b89/14d042b5043a4ca08973318bac2fc89c/FLAG9d2d47ca5 [2022-02-01 00:14:03,756 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:14:03,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float20.i [2022-02-01 00:14:03,765 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/445484b89/14d042b5043a4ca08973318bac2fc89c/FLAG9d2d47ca5 [2022-02-01 00:14:04,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/445484b89/14d042b5043a4ca08973318bac2fc89c [2022-02-01 00:14:04,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:14:04,170 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:14:04,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:14:04,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:14:04,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:14:04,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:14:04" (1/1) ... [2022-02-01 00:14:04,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@519d28ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:04, skipping insertion in model container [2022-02-01 00:14:04,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:14:04" (1/1) ... [2022-02-01 00:14:04,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:14:04,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:14:04,341 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/float20.i[1032,1045] [2022-02-01 00:14:04,348 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/float20.i[1306,1319] [2022-02-01 00:14:04,351 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/float20.i[1464,1477] [2022-02-01 00:14:04,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:14:04,363 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:14:04,374 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/float20.i[1032,1045] [2022-02-01 00:14:04,377 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/float20.i[1306,1319] [2022-02-01 00:14:04,379 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/float20.i[1464,1477] [2022-02-01 00:14:04,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:14:04,390 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:14:04,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:04 WrapperNode [2022-02-01 00:14:04,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:14:04,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:14:04,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:14:04,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:14:04,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:04" (1/1) ... [2022-02-01 00:14:04,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:04" (1/1) ... [2022-02-01 00:14:04,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:04" (1/1) ... [2022-02-01 00:14:04,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:04" (1/1) ... [2022-02-01 00:14:04,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:04" (1/1) ... [2022-02-01 00:14:04,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:04" (1/1) ... [2022-02-01 00:14:04,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:04" (1/1) ... [2022-02-01 00:14:04,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:14:04,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:14:04,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:14:04,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:14:04,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:04" (1/1) ... [2022-02-01 00:14:04,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:14:04,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:14:04,443 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) [2022-02-01 00:14:04,456 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 [2022-02-01 00:14:04,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:14:04,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:14:04,481 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:14:04,481 INFO L138 BoogieDeclarations]: Found implementation of procedure bug [2022-02-01 00:14:04,481 INFO L138 BoogieDeclarations]: Found implementation of procedure bugBrokenOut [2022-02-01 00:14:04,481 INFO L138 BoogieDeclarations]: Found implementation of procedure bugCasting [2022-02-01 00:14:04,481 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:14:04,481 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:14:04,481 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:14:04,481 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-01 00:14:04,481 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-01 00:14:04,482 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:14:04,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:14:04,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-02-01 00:14:04,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-02-01 00:14:04,482 INFO L130 BoogieDeclarations]: Found specification of procedure bug [2022-02-01 00:14:04,482 INFO L130 BoogieDeclarations]: Found specification of procedure bugBrokenOut [2022-02-01 00:14:04,482 INFO L130 BoogieDeclarations]: Found specification of procedure bugCasting [2022-02-01 00:14:04,482 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:14:04,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:14:04,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:14:04,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:14:04,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:14:04,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:14:04,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:14:04,543 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:14:04,545 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:14:04,664 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:14:04,670 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:14:04,670 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-01 00:14:04,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:14:04 BoogieIcfgContainer [2022-02-01 00:14:04,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:14:04,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:14:04,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:14:04,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:14:04,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:14:04" (1/3) ... [2022-02-01 00:14:04,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ada6cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:14:04, skipping insertion in model container [2022-02-01 00:14:04,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:04" (2/3) ... [2022-02-01 00:14:04,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ada6cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:14:04, skipping insertion in model container [2022-02-01 00:14:04,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:14:04" (3/3) ... [2022-02-01 00:14:04,691 INFO L111 eAbstractionObserver]: Analyzing ICFG float20.i [2022-02-01 00:14:04,695 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:14:04,695 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-02-01 00:14:04,763 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:14:04,781 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=QVASR [2022-02-01 00:14:04,782 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-01 00:14:04,815 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 29 states have internal predecessors, (35), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-01 00:14:04,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-01 00:14:04,821 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:14:04,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:14:04,822 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting bugErr0ASSERT_VIOLATIONERROR_FUNCTION === [bugCastingErr0ASSERT_VIOLATIONERROR_FUNCTION, bugBrokenOutErr0ASSERT_VIOLATIONERROR_FUNCTION, bugErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:14:04,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:14:04,827 INFO L85 PathProgramCache]: Analyzing trace with hash 571243643, now seen corresponding path program 1 times [2022-02-01 00:14:04,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:14:04,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107239939] [2022-02-01 00:14:04,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:14:04,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:14:04,901 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:14:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:14:04,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:14:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:14:05,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-01 00:14:05,004 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:14:05,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107239939] [2022-02-01 00:14:05,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2107239939] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:14:05,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:14:05,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-01 00:14:05,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478009527] [2022-02-01 00:14:05,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:14:05,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-01 00:14:05,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:14:05,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-01 00:14:05,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-01 00:14:05,042 INFO L87 Difference]: Start difference. First operand has 40 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 29 states have internal predecessors, (35), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-01 00:14:05,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:14:05,117 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2022-02-01 00:14:05,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-01 00:14:05,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-02-01 00:14:05,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:14:05,126 INFO L225 Difference]: With dead ends: 71 [2022-02-01 00:14:05,126 INFO L226 Difference]: Without dead ends: 33 [2022-02-01 00:14:05,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-01 00:14:05,132 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 26 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-01 00:14:05,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 39 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-01 00:14:05,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-02-01 00:14:05,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-02-01 00:14:05,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 24 states have internal predecessors, (24), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-01 00:14:05,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 32 transitions. [2022-02-01 00:14:05,164 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 32 transitions. Word has length 12 [2022-02-01 00:14:05,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:14:05,164 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 32 transitions. [2022-02-01 00:14:05,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-01 00:14:05,165 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 32 transitions. [2022-02-01 00:14:05,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-01 00:14:05,166 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:14:05,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:14:05,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:14:05,167 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting bugErr0ASSERT_VIOLATIONERROR_FUNCTION === [bugCastingErr0ASSERT_VIOLATIONERROR_FUNCTION, bugBrokenOutErr0ASSERT_VIOLATIONERROR_FUNCTION, bugErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:14:05,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:14:05,170 INFO L85 PathProgramCache]: Analyzing trace with hash 571303225, now seen corresponding path program 1 times [2022-02-01 00:14:05,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:14:05,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508443591] [2022-02-01 00:14:05,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:14:05,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:14:05,181 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:14:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:14:05,194 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:14:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:14:05,214 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:14:05,214 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:14:05,217 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location bugErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-01 00:14:05,218 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location bugCastingErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-02-01 00:14:05,218 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location bugBrokenOutErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-02-01 00:14:05,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:14:05,222 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:14:05,224 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:14:05,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:14:05 BoogieIcfgContainer [2022-02-01 00:14:05,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:14:05,238 INFO L158 Benchmark]: Toolchain (without parser) took 1067.29ms. Allocated memory is still 173.0MB. Free memory was 121.1MB in the beginning and 104.3MB in the end (delta: 16.8MB). Peak memory consumption was 17.0MB. Max. memory is 8.0GB. [2022-02-01 00:14:05,238 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 173.0MB. Free memory is still 137.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:14:05,239 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.96ms. Allocated memory is still 173.0MB. Free memory was 120.9MB in the beginning and 143.1MB in the end (delta: -22.2MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. [2022-02-01 00:14:05,239 INFO L158 Benchmark]: Boogie Preprocessor took 22.19ms. Allocated memory is still 173.0MB. Free memory was 143.1MB in the beginning and 142.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-01 00:14:05,239 INFO L158 Benchmark]: RCFGBuilder took 269.61ms. Allocated memory is still 173.0MB. Free memory was 141.6MB in the beginning and 131.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-01 00:14:05,240 INFO L158 Benchmark]: TraceAbstraction took 551.26ms. Allocated memory is still 173.0MB. Free memory was 130.6MB in the beginning and 104.3MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2022-02-01 00:14:05,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 173.0MB. Free memory is still 137.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 217.96ms. Allocated memory is still 173.0MB. Free memory was 120.9MB in the beginning and 143.1MB in the end (delta: -22.2MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.19ms. Allocated memory is still 173.0MB. Free memory was 143.1MB in the beginning and 142.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 269.61ms. Allocated memory is still 173.0MB. Free memory was 141.6MB in the beginning and 131.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 551.26ms. Allocated memory is still 173.0MB. Free memory was 130.6MB in the beginning and 104.3MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. 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: 21]: 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 21, overapproximation of someBinaryArithmeticFLOAToperation at line 19, overapproximation of someBinaryArithmeticDOUBLEoperation at line 18. Possible FailurePath: [L48] float f=__VERIFIER_nondet_float(); [L49] CALL bug(f) [L17] COND FALSE !(!(min == 0x1.fffffep-105f)) [L18] float modifier = (0x1.0p-23 * (1<<1)); [L19] float ulpdiff = min * modifier; [L21] COND TRUE !(ulpdiff == 0x1p-126f) [L21] reach_error() - UnprovableResult [Line: 42]: 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: 32]: 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 7 procedures, 43 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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, 29 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 36 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 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 [2022-02-01 00:14:05,275 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...