/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0710.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:01:43,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:01:43,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:01:43,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 23:01:43,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:01:43,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:01:43,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:01:43,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:01:43,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:01:43,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:01:43,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:01:43,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:01:43,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:01:43,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:01:43,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:01:43,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:01:43,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 23:01:43,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:01:43,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:01:43,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:01:43,710 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 23:01:43,740 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:01:43,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:01:43,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:01:43,742 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 23:01:43,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:01:43,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 23:01:43,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:01:43,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:01:43,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:01:43,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:01:43,743 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 23:01:43,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:01:43,743 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:01:43,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:01:43,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:01:43,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:01:43,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:01:43,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:01:43,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:01:43,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:01:43,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:01:43,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:01:43,744 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 23:01:43,744 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:01:43,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:01:43,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:01:43,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:01:43,952 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:01:43,955 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:01:43,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0710.c [2022-01-31 23:01:43,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de1c65033/c5d9a16a84ee429983bf42706c276a5e/FLAG5cd7dec88 [2022-01-31 23:01:44,357 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:01:44,357 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0710.c [2022-01-31 23:01:44,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de1c65033/c5d9a16a84ee429983bf42706c276a5e/FLAG5cd7dec88 [2022-01-31 23:01:44,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de1c65033/c5d9a16a84ee429983bf42706c276a5e [2022-01-31 23:01:44,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:01:44,382 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:01:44,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:01:44,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:01:44,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:01:44,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:01:44" (1/1) ... [2022-01-31 23:01:44,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9fdb01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:44, skipping insertion in model container [2022-01-31 23:01:44,389 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:01:44" (1/1) ... [2022-01-31 23:01:44,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:01:44,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:01:44,596 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_0710.c[1961,1974] [2022-01-31 23:01:44,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:01:44,606 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:01:44,635 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_0710.c[1961,1974] [2022-01-31 23:01:44,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:01:44,647 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:01:44,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:44 WrapperNode [2022-01-31 23:01:44,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:01:44,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:01:44,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:01:44,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:01:44,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:44" (1/1) ... [2022-01-31 23:01:44,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:44" (1/1) ... [2022-01-31 23:01:44,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:44" (1/1) ... [2022-01-31 23:01:44,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:44" (1/1) ... [2022-01-31 23:01:44,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:44" (1/1) ... [2022-01-31 23:01:44,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:44" (1/1) ... [2022-01-31 23:01:44,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:44" (1/1) ... [2022-01-31 23:01:44,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:01:44,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:01:44,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:01:44,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:01:44,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:44" (1/1) ... [2022-01-31 23:01:44,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:01:44,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:01:44,731 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 23:01:44,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 23:01:44,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:01:44,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:01:44,777 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:01:44,777 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2022-01-31 23:01:44,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2022-01-31 23:01:44,777 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:01:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:01:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:01:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:01:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:01:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-01-31 23:01:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2022-01-31 23:01:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2022-01-31 23:01:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 23:01:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-01-31 23:01:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:01:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:01:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:01:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-01-31 23:01:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:01:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:01:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:01:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:01:44,847 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:01:44,848 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:01:45,092 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:01:45,096 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:01:45,096 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-31 23:01:45,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:01:45 BoogieIcfgContainer [2022-01-31 23:01:45,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:01:45,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:01:45,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:01:45,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:01:45,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:01:44" (1/3) ... [2022-01-31 23:01:45,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c07dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:01:45, skipping insertion in model container [2022-01-31 23:01:45,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:44" (2/3) ... [2022-01-31 23:01:45,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c07dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:01:45, skipping insertion in model container [2022-01-31 23:01:45,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:01:45" (3/3) ... [2022-01-31 23:01:45,112 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0710.c [2022-01-31 23:01:45,115 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:01:45,115 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:01:45,149 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:01:45,157 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-01-31 23:01:45,157 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:01:45,170 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 39 states have internal predecessors, (58), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 23:01:45,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 23:01:45,175 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:45,175 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] [2022-01-31 23:01:45,176 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:45,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:45,183 INFO L85 PathProgramCache]: Analyzing trace with hash -226607477, now seen corresponding path program 1 times [2022-01-31 23:01:45,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:45,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876938916] [2022-01-31 23:01:45,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:45,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:45,233 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:45,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:01:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:45,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 23:01:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:45,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 23:01:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:45,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:01:45,413 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:01:45,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876938916] [2022-01-31 23:01:45,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [876938916] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:01:45,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:01:45,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 23:01:45,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751403240] [2022-01-31 23:01:45,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:01:45,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 23:01:45,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:01:45,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 23:01:45,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 23:01:45,441 INFO L87 Difference]: Start difference. First operand has 48 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 39 states have internal predecessors, (58), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 23:01:45,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:01:45,602 INFO L93 Difference]: Finished difference Result 90 states and 125 transitions. [2022-01-31 23:01:45,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 23:01:45,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-01-31 23:01:45,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:01:45,609 INFO L225 Difference]: With dead ends: 90 [2022-01-31 23:01:45,609 INFO L226 Difference]: Without dead ends: 43 [2022-01-31 23:01:45,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 23:01:45,613 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 58 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:01:45,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 57 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:01:45,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-31 23:01:45,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-01-31 23:01:45,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 35 states have internal predecessors, (46), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 23:01:45,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2022-01-31 23:01:45,640 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 22 [2022-01-31 23:01:45,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:01:45,641 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2022-01-31 23:01:45,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 23:01:45,641 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2022-01-31 23:01:45,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-31 23:01:45,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:45,642 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] [2022-01-31 23:01:45,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:01:45,642 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:45,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:45,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1239234160, now seen corresponding path program 1 times [2022-01-31 23:01:45,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:45,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421625474] [2022-01-31 23:01:45,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:45,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:45,645 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:01:45,669 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 23:01:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:01:45,706 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 23:01:45,706 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 23:01:45,709 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 23:01:45,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:01:45,713 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 23:01:45,715 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 23:01:45,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:01:45 BoogieIcfgContainer [2022-01-31 23:01:45,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 23:01:45,729 INFO L158 Benchmark]: Toolchain (without parser) took 1346.62ms. Allocated memory is still 184.5MB. Free memory was 140.1MB in the beginning and 107.0MB in the end (delta: 33.1MB). Peak memory consumption was 33.1MB. Max. memory is 8.0GB. [2022-01-31 23:01:45,729 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 184.5MB. Free memory is still 156.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:01:45,730 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.44ms. Allocated memory is still 184.5MB. Free memory was 140.0MB in the beginning and 160.4MB in the end (delta: -20.5MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. [2022-01-31 23:01:45,732 INFO L158 Benchmark]: Boogie Preprocessor took 38.69ms. Allocated memory is still 184.5MB. Free memory was 160.4MB in the beginning and 159.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 23:01:45,732 INFO L158 Benchmark]: RCFGBuilder took 410.35ms. Allocated memory is still 184.5MB. Free memory was 159.0MB in the beginning and 145.3MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-01-31 23:01:45,732 INFO L158 Benchmark]: TraceAbstraction took 629.43ms. Allocated memory is still 184.5MB. Free memory was 144.8MB in the beginning and 107.0MB in the end (delta: 37.8MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2022-01-31 23:01:45,739 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 184.5MB. Free memory is still 156.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 262.44ms. Allocated memory is still 184.5MB. Free memory was 140.0MB in the beginning and 160.4MB in the end (delta: -20.5MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.69ms. Allocated memory is still 184.5MB. Free memory was 160.4MB in the beginning and 159.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 410.35ms. Allocated memory is still 184.5MB. Free memory was 159.0MB in the beginning and 145.3MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 629.43ms. Allocated memory is still 184.5MB. Free memory was 144.8MB in the beginning and 107.0MB in the end (delta: 37.8MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 100]: 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 15, overapproximation of bitwiseAnd at line 29, overapproximation of someBinaryArithmeticFLOAToperation at line 32. Possible FailurePath: [L17] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L93] float x = __VERIFIER_nondet_float(); [L94] COND TRUE x < -0.0f [L96] CALL, EXPR __ieee754_sqrtf(x) [L20] float z; [L21] __uint32_t r, hx; [L22] __int32_t ix, s, q, m, t, i; [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (ix) = gf_u.word [L29] hx = ix & 0x7fffffff [L31] COND TRUE !((hx) < 0x7f800000L) [L32] return x * x + x; [L96] RET, EXPR __ieee754_sqrtf(x) [L96] float res = __ieee754_sqrtf(x); [L99] CALL, EXPR isnan_float(res) [L15] return x != x; [L99] RET, EXPR isnan_float(res) [L99] COND TRUE !isnan_float(res) [L100] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 59 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 58 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54 IncrementalHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 55 mSDtfsCounter, 54 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-01-31 23:01:45,763 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...