/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/float-newlib/float_req_bl_1271a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:21:10,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:21:10,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:21:10,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:21:10,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-01 00:21:10,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-01 00:21:10,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-01 00:21:10,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-01 00:21:10,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-01 00:21:10,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-01 00:21:10,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-01 00:21:10,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-01 00:21:10,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-01 00:21:10,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-01 00:21:10,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-01 00:21:10,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-01 00:21:10,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-01 00:21:10,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:21:10,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:21:10,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:21:10,523 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 00:21:10,530 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:21:10,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:21:10,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:21:10,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:21:10,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:21:10,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:21:10,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:21:10,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:21:10,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:21:10,533 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:21:10,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:21:10,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:21:10,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:21:10,534 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:21:10,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:21:10,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:21:10,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:21:10,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:21:10,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:21:10,534 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:21:10,535 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:21:10,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:21:10,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:21:10,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:21:10,723 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:21:10,724 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:21:10,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1271a.c [2022-02-01 00:21:10,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d3b708ce/bbb4dc75c1334ec585faf86be477608b/FLAG499f99fee [2022-02-01 00:21:11,118 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:21:11,118 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1271a.c [2022-02-01 00:21:11,136 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d3b708ce/bbb4dc75c1334ec585faf86be477608b/FLAG499f99fee [2022-02-01 00:21:11,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d3b708ce/bbb4dc75c1334ec585faf86be477608b [2022-02-01 00:21:11,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:21:11,504 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:21:11,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:21:11,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:21:11,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:21:11,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:21:11" (1/1) ... [2022-02-01 00:21:11,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@573dbff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:11, skipping insertion in model container [2022-02-01 00:21:11,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:21:11" (1/1) ... [2022-02-01 00:21:11,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:21:11,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:21:11,759 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/float_req_bl_1271a.c[4883,4896] [2022-02-01 00:21:11,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:21:11,766 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:21:11,820 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/float_req_bl_1271a.c[4883,4896] [2022-02-01 00:21:11,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:21:11,835 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:21:11,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:11 WrapperNode [2022-02-01 00:21:11,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:21:11,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:21:11,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:21:11,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:21:11,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:11" (1/1) ... [2022-02-01 00:21:11,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:11" (1/1) ... [2022-02-01 00:21:11,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:11" (1/1) ... [2022-02-01 00:21:11,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:11" (1/1) ... [2022-02-01 00:21:11,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:11" (1/1) ... [2022-02-01 00:21:11,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:11" (1/1) ... [2022-02-01 00:21:11,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:11" (1/1) ... [2022-02-01 00:21:11,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:21:11,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:21:11,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:21:11,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:21:11,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:11" (1/1) ... [2022-02-01 00:21:11,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:21:11,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:21:11,938 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 00:21:11,943 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 00:21:11,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:21:11,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:21:11,965 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:21:11,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2022-02-01 00:21:11,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_hypotf [2022-02-01 00:21:11,965 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2022-02-01 00:21:11,965 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2022-02-01 00:21:11,965 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:21:11,965 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:21:11,965 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:21:11,965 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:21:11,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:21:11,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-02-01 00:21:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2022-02-01 00:21:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-01 00:21:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-01 00:21:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:21:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:21:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:21:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-01 00:21:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_hypotf [2022-02-01 00:21:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2022-02-01 00:21:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2022-02-01 00:21:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:21:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:21:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:21:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:21:12,026 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:21:12,027 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:21:12,320 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:21:12,327 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:21:12,327 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2022-02-01 00:21:12,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:21:12 BoogieIcfgContainer [2022-02-01 00:21:12,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:21:12,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:21:12,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:21:12,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:21:12,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:21:11" (1/3) ... [2022-02-01 00:21:12,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24292218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:21:12, skipping insertion in model container [2022-02-01 00:21:12,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:11" (2/3) ... [2022-02-01 00:21:12,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24292218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:21:12, skipping insertion in model container [2022-02-01 00:21:12,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:21:12" (3/3) ... [2022-02-01 00:21:12,334 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1271a.c [2022-02-01 00:21:12,337 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:21:12,338 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:21:12,364 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:21:12,369 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 00:21:12,369 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:21:12,379 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 94 states have (on average 1.627659574468085) internal successors, (153), 95 states have internal predecessors, (153), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-01 00:21:12,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-01 00:21:12,388 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:21:12,389 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:21:12,389 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:21:12,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:21:12,393 INFO L85 PathProgramCache]: Analyzing trace with hash 2121182565, now seen corresponding path program 1 times [2022-02-01 00:21:12,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:21:12,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329017160] [2022-02-01 00:21:12,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:21:12,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:21:12,437 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:21:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:21:12,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:21:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:21:12,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:21:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:21:12,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-02-01 00:21:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:21:12,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-01 00:21:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:21:12,597 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 00:21:12,598 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:21:12,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329017160] [2022-02-01 00:21:12,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [329017160] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:21:12,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:21:12,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-01 00:21:12,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434578633] [2022-02-01 00:21:12,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:21:12,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-01 00:21:12,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:21:12,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-01 00:21:12,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:21:12,629 INFO L87 Difference]: Start difference. First operand has 109 states, 94 states have (on average 1.627659574468085) internal successors, (153), 95 states have internal predecessors, (153), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-01 00:21:12,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:21:12,892 INFO L93 Difference]: Finished difference Result 210 states and 329 transitions. [2022-02-01 00:21:12,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-01 00:21:12,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2022-02-01 00:21:12,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:21:12,903 INFO L225 Difference]: With dead ends: 210 [2022-02-01 00:21:12,903 INFO L226 Difference]: Without dead ends: 104 [2022-02-01 00:21:12,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-01 00:21:12,910 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 119 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-01 00:21:12,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 125 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-01 00:21:12,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-02-01 00:21:12,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2022-02-01 00:21:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 91 states have (on average 1.2417582417582418) internal successors, (113), 91 states have internal predecessors, (113), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-01 00:21:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 126 transitions. [2022-02-01 00:21:12,949 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 126 transitions. Word has length 34 [2022-02-01 00:21:12,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:21:12,949 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 126 transitions. [2022-02-01 00:21:12,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-01 00:21:12,949 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 126 transitions. [2022-02-01 00:21:12,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-01 00:21:12,950 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:21:12,950 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:21:12,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:21:12,951 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:21:12,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:21:12,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2124588546, now seen corresponding path program 1 times [2022-02-01 00:21:12,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:21:12,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616656704] [2022-02-01 00:21:12,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:21:12,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:21:12,954 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:21:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:21:13,021 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:21:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:21:13,069 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:21:13,070 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:21:13,072 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:21:13,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:21:13,075 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:21:13,077 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:21:13,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:21:13 BoogieIcfgContainer [2022-02-01 00:21:13,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:21:13,086 INFO L158 Benchmark]: Toolchain (without parser) took 1581.96ms. Allocated memory was 170.9MB in the beginning and 229.6MB in the end (delta: 58.7MB). Free memory was 115.3MB in the beginning and 115.7MB in the end (delta: -381.2kB). Peak memory consumption was 58.1MB. Max. memory is 8.0GB. [2022-02-01 00:21:13,087 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 170.9MB. Free memory is still 132.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:21:13,087 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.15ms. Allocated memory was 170.9MB in the beginning and 229.6MB in the end (delta: 58.7MB). Free memory was 115.1MB in the beginning and 201.2MB in the end (delta: -86.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-02-01 00:21:13,088 INFO L158 Benchmark]: Boogie Preprocessor took 62.09ms. Allocated memory is still 229.6MB. Free memory was 201.2MB in the beginning and 198.6MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-02-01 00:21:13,088 INFO L158 Benchmark]: RCFGBuilder took 430.57ms. Allocated memory is still 229.6MB. Free memory was 198.6MB in the beginning and 175.0MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-02-01 00:21:13,088 INFO L158 Benchmark]: TraceAbstraction took 755.71ms. Allocated memory is still 229.6MB. Free memory was 175.0MB in the beginning and 115.7MB in the end (delta: 59.3MB). Peak memory consumption was 59.8MB. Max. memory is 8.0GB. [2022-02-01 00:21:13,090 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 170.9MB. Free memory is still 132.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 327.15ms. Allocated memory was 170.9MB in the beginning and 229.6MB in the end (delta: 58.7MB). Free memory was 115.1MB in the beginning and 201.2MB in the end (delta: -86.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 62.09ms. Allocated memory is still 229.6MB. Free memory was 201.2MB in the beginning and 198.6MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 430.57ms. Allocated memory is still 229.6MB. Free memory was 198.6MB in the beginning and 175.0MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 755.71ms. Allocated memory is still 229.6MB. Free memory was 175.0MB in the beginning and 115.7MB in the end (delta: 59.3MB). Peak memory consumption was 59.8MB. 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: 241]: 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 213, overapproximation of someBinaryArithmeticFLOAToperation at line 120, overapproximation of bitwiseAnd at line 98. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L234] float x = 0.0f / 0.0f; [L235] float y = __VERIFIER_nondet_float(); [L237] CALL isfinite_float(y) [L217] __int32_t ix; [L219] ieee_float_shape_type gf_u; [L220] gf_u.value = (x) [L221] EXPR gf_u.word [L221] (ix) = gf_u.word [L223] ix &= 0x7fffffff [L224] return (((ix) < 0x7f800000L)); [L237] RET isfinite_float(y) [L237] COND TRUE isfinite_float(y) [L238] CALL, EXPR __ieee754_hypotf(x, y) [L84] float a = x, b = y, t1, t2, y1, y2, w; [L85] __int32_t j, k, ha, hb; [L88] ieee_float_shape_type gf_u; [L89] gf_u.value = (x) [L90] EXPR gf_u.word [L90] (ha) = gf_u.word [L92] ha &= 0x7fffffffL [L94] ieee_float_shape_type gf_u; [L95] gf_u.value = (y) [L96] EXPR gf_u.word [L96] (hb) = gf_u.word [L98] hb &= 0x7fffffffL [L99] COND TRUE hb > ha [L100] a = y [L101] b = x [L102] j = ha [L103] ha = hb [L104] hb = j [L110] ieee_float_shape_type sf_u; [L111] sf_u.word = (ha) [L112] EXPR sf_u.value [L112] (a) = sf_u.value [L115] ieee_float_shape_type sf_u; [L116] sf_u.word = (hb) [L117] EXPR sf_u.value [L117] (b) = sf_u.value [L119] COND TRUE (ha - hb) > 0xf000000L [L120] return a + b; [L238] RET, EXPR __ieee754_hypotf(x, y) [L238] float res = __ieee754_hypotf(x, y); [L240] CALL, EXPR isnan_float(res) [L213] return x != x; [L240] RET, EXPR isnan_float(res) [L240] COND TRUE !isnan_float(res) [L241] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 112 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 123 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 119 mSDsluCounter, 125 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 129 IncrementalHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 123 mSDtfsCounter, 129 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred 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 [2022-02-01 00:21:13,113 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...