/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_0683a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:20:05,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:20:05,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:20:05,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:20:05,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-01 00:20:05,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-01 00:20:05,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-01 00:20:05,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-01 00:20:05,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-01 00:20:05,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-01 00:20:05,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-01 00:20:05,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-01 00:20:05,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-01 00:20:05,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-01 00:20:05,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-01 00:20:05,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-01 00:20:05,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-01 00:20:05,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:20:05,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:20:05,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:20:05,804 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 00:20:05,816 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:20:05,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:20:05,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:20:05,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:20:05,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:20:05,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:20:05,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:20:05,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:20:05,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:20:05,818 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:20:05,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:20:05,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:20:05,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:20:05,819 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:20:05,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:20:05,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:20:05,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:20:05,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:20:05,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:20:05,819 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:20:05,819 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:20:06,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:20:06,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:20:06,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:20:06,054 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:20:06,055 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:20:06,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0683a.c [2022-02-01 00:20:06,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f90a58b59/e9875b094b274a93add82f290c9014b8/FLAG4904ef25f [2022-02-01 00:20:06,459 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:20:06,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0683a.c [2022-02-01 00:20:06,465 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f90a58b59/e9875b094b274a93add82f290c9014b8/FLAG4904ef25f [2022-02-01 00:20:06,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f90a58b59/e9875b094b274a93add82f290c9014b8 [2022-02-01 00:20:06,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:20:06,884 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:20:06,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:20:06,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:20:06,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:20:06,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:20:06" (1/1) ... [2022-02-01 00:20:06,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f26bc1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:06, skipping insertion in model container [2022-02-01 00:20:06,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:20:06" (1/1) ... [2022-02-01 00:20:06,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:20:06,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:20:07,049 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_0683a.c[5826,5839] [2022-02-01 00:20:07,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:20:07,057 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:20:07,096 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_0683a.c[5826,5839] [2022-02-01 00:20:07,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:20:07,107 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:20:07,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:07 WrapperNode [2022-02-01 00:20:07,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:20:07,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:20:07,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:20:07,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:20:07,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:07" (1/1) ... [2022-02-01 00:20:07,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:07" (1/1) ... [2022-02-01 00:20:07,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:07" (1/1) ... [2022-02-01 00:20:07,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:07" (1/1) ... [2022-02-01 00:20:07,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:07" (1/1) ... [2022-02-01 00:20:07,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:07" (1/1) ... [2022-02-01 00:20:07,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:07" (1/1) ... [2022-02-01 00:20:07,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:20:07,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:20:07,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:20:07,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:20:07,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:07" (1/1) ... [2022-02-01 00:20:07,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:20:07,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:20:07,188 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 00:20:07,207 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 00:20:07,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:20:07,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:20:07,242 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:20:07,242 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2022-02-01 00:20:07,242 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2022-02-01 00:20:07,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2022-02-01 00:20:07,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2022-02-01 00:20:07,242 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2022-02-01 00:20:07,243 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:20:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:20:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:20:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:20:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:20:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-02-01 00:20:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2022-02-01 00:20:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-01 00:20:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-01 00:20:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:20:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:20:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:20:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-01 00:20:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2022-02-01 00:20:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2022-02-01 00:20:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2022-02-01 00:20:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2022-02-01 00:20:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:20:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:20:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:20:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-02-01 00:20:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:20:07,356 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:20:07,357 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:20:07,663 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:20:07,668 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:20:07,668 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2022-02-01 00:20:07,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:20:07 BoogieIcfgContainer [2022-02-01 00:20:07,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:20:07,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:20:07,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:20:07,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:20:07,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:20:06" (1/3) ... [2022-02-01 00:20:07,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fa48f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:20:07, skipping insertion in model container [2022-02-01 00:20:07,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:07" (2/3) ... [2022-02-01 00:20:07,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fa48f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:20:07, skipping insertion in model container [2022-02-01 00:20:07,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:20:07" (3/3) ... [2022-02-01 00:20:07,691 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0683a.c [2022-02-01 00:20:07,697 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:20:07,697 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:20:07,729 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:20:07,734 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 00:20:07,734 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:20:07,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 100 states have (on average 1.6) internal successors, (160), 101 states have internal predecessors, (160), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-02-01 00:20:07,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-01 00:20:07,765 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:20:07,765 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] [2022-02-01 00:20:07,766 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:20:07,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:20:07,772 INFO L85 PathProgramCache]: Analyzing trace with hash 970499745, now seen corresponding path program 1 times [2022-02-01 00:20:07,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:20:07,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132239269] [2022-02-01 00:20:07,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:20:07,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:20:07,824 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:20:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:07,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:20:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:08,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:20:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:08,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-02-01 00:20:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:08,050 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 00:20:08,051 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:20:08,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132239269] [2022-02-01 00:20:08,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2132239269] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:20:08,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:20:08,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-01 00:20:08,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896836660] [2022-02-01 00:20:08,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:20:08,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-01 00:20:08,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:20:08,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-01 00:20:08,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:20:08,083 INFO L87 Difference]: Start difference. First operand has 118 states, 100 states have (on average 1.6) internal successors, (160), 101 states have internal predecessors, (160), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 2 states have internal predecessors, (20), 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) [2022-02-01 00:20:08,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:20:08,450 INFO L93 Difference]: Finished difference Result 228 states and 354 transitions. [2022-02-01 00:20:08,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-01 00:20:08,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 2 states have internal predecessors, (20), 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 27 [2022-02-01 00:20:08,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:20:08,461 INFO L225 Difference]: With dead ends: 228 [2022-02-01 00:20:08,461 INFO L226 Difference]: Without dead ends: 113 [2022-02-01 00:20:08,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-01 00:20:08,469 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 140 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-01 00:20:08,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 147 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-01 00:20:08,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-02-01 00:20:08,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2022-02-01 00:20:08,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 97 states have (on average 1.402061855670103) internal successors, (136), 97 states have internal predecessors, (136), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-01 00:20:08,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 153 transitions. [2022-02-01 00:20:08,525 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 153 transitions. Word has length 27 [2022-02-01 00:20:08,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:20:08,525 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 153 transitions. [2022-02-01 00:20:08,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 2 states have internal predecessors, (20), 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) [2022-02-01 00:20:08,526 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 153 transitions. [2022-02-01 00:20:08,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-01 00:20:08,527 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:20:08,527 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] [2022-02-01 00:20:08,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:20:08,528 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:20:08,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:20:08,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1044462209, now seen corresponding path program 1 times [2022-02-01 00:20:08,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:20:08,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227825977] [2022-02-01 00:20:08,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:20:08,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:20:08,532 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:20:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:20:08,621 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:20:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:20:08,691 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:20:08,691 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:20:08,695 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:20:08,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:20:08,699 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:20:08,701 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:20:08,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:20:08 BoogieIcfgContainer [2022-02-01 00:20:08,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:20:08,713 INFO L158 Benchmark]: Toolchain (without parser) took 1827.41ms. Allocated memory was 186.6MB in the beginning and 255.9MB in the end (delta: 69.2MB). Free memory was 133.6MB in the beginning and 113.1MB in the end (delta: 20.5MB). Peak memory consumption was 89.4MB. Max. memory is 8.0GB. [2022-02-01 00:20:08,713 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 186.6MB. Free memory is still 150.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:20:08,714 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.75ms. Allocated memory was 186.6MB in the beginning and 255.9MB in the end (delta: 69.2MB). Free memory was 133.5MB in the beginning and 224.7MB in the end (delta: -91.3MB). Peak memory consumption was 11.1MB. Max. memory is 8.0GB. [2022-02-01 00:20:08,718 INFO L158 Benchmark]: Boogie Preprocessor took 45.17ms. Allocated memory is still 255.9MB. Free memory was 224.7MB in the beginning and 221.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-02-01 00:20:08,718 INFO L158 Benchmark]: RCFGBuilder took 515.01ms. Allocated memory is still 255.9MB. Free memory was 221.6MB in the beginning and 199.1MB in the end (delta: 22.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2022-02-01 00:20:08,719 INFO L158 Benchmark]: TraceAbstraction took 1041.01ms. Allocated memory is still 255.9MB. Free memory was 198.5MB in the beginning and 113.1MB in the end (delta: 85.5MB). Peak memory consumption was 84.9MB. Max. memory is 8.0GB. [2022-02-01 00:20:08,720 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 186.6MB. Free memory is still 150.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 222.75ms. Allocated memory was 186.6MB in the beginning and 255.9MB in the end (delta: 69.2MB). Free memory was 133.5MB in the beginning and 224.7MB in the end (delta: -91.3MB). Peak memory consumption was 11.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 45.17ms. Allocated memory is still 255.9MB. Free memory was 224.7MB in the beginning and 221.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 515.01ms. Allocated memory is still 255.9MB. Free memory was 221.6MB in the beginning and 199.1MB in the end (delta: 22.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1041.01ms. Allocated memory is still 255.9MB. Free memory was 198.5MB in the beginning and 113.1MB in the end (delta: 85.5MB). Peak memory consumption was 84.9MB. 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: 257]: 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 256, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 135, overapproximation of someBinaryArithmeticFLOAToperation at line 137. Possible FailurePath: [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L43-L47] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L49-L51] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L117-L118] static const float tiny_atan2 = 1.0e-30, zero_atan2 = 0.0, pi_lo_atan2 = -8.7422776573e-08; [L249] float x = 1.0f / 0.0f; [L250] float y = __VERIFIER_nondet_float(); [L252] CALL, EXPR isfinite_float(y) [L231] __int32_t ix; [L233] ieee_float_shape_type gf_u; [L234] gf_u.value = (x) [L235] EXPR gf_u.word [L235] (ix) = gf_u.word [L237] ix &= 0x7fffffff [L238] return (((ix) < 0x7f800000L)); [L252] RET, EXPR isfinite_float(y) [L252] COND TRUE isfinite_float(y) && y < 0.0f [L253] CALL, EXPR __ieee754_atan2f(y, x) [L121] float z; [L122] __int32_t k, m, hx, hy, ix, iy; [L125] ieee_float_shape_type gf_u; [L126] gf_u.value = (x) [L127] EXPR gf_u.word [L127] (hx) = gf_u.word [L129] ix = hx & 0x7fffffff [L131] ieee_float_shape_type gf_u; [L132] gf_u.value = (y) [L133] EXPR gf_u.word [L133] (hy) = gf_u.word [L135] iy = hy & 0x7fffffff [L136] COND TRUE ((ix) > 0x7f800000L) || ((iy) > 0x7f800000L) [L137] return x + y; [L253] RET, EXPR __ieee754_atan2f(y, x) [L253] float res = __ieee754_atan2f(y, x); [L256] EXPR res == -0.0f && __signbit_float(res) == 1 [L256] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L257] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 121 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 146 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 140 mSDsluCounter, 147 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 159 IncrementalHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 145 mSDtfsCounter, 159 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred 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 00:20:08,749 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...