/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_0681a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:01:28,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:01:28,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:01:28,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 23:01:28,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 23:01:28,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 23:01:28,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 23:01:28,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 23:01:28,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 23:01:28,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 23:01:28,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 23:01:28,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 23:01:28,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:01:28,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:01:28,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:01:28,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:01:28,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:01:28,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:01:28,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:01:28,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:01:28,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:01:28,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:01:28,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:01:28,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:01:28,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 23:01:28,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 23:01:28,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 23:01:28,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 23:01:28,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 23:01:28,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 23:01:28,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 23:01:28,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 23:01:28,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 23:01:28,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 23:01:28,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 23:01:28,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 23:01:28,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 23:01:28,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 23:01:28,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:01:28,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:01:28,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:01:28,848 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 23:01:28,855 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:01:28,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:01:28,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:01:28,857 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 23:01:28,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:01:28,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 23:01:28,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:01:28,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:01:28,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:01:28,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:01:28,858 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 23:01:28,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:01:28,858 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:01:28,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:01:28,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:01:28,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:01:28,859 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:01:28,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:01:28,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:01:28,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:01:28,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:01:28,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:01:28,860 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 23:01:28,860 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:01:29,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:01:29,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:01:29,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:01:29,105 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:01:29,106 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:01:29,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0681a.c [2022-01-31 23:01:29,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bf17151a/3ead1ab323eb42e1a77c5bdebaafb836/FLAG48ad9b77c [2022-01-31 23:01:29,586 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:01:29,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0681a.c [2022-01-31 23:01:29,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bf17151a/3ead1ab323eb42e1a77c5bdebaafb836/FLAG48ad9b77c [2022-01-31 23:01:29,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bf17151a/3ead1ab323eb42e1a77c5bdebaafb836 [2022-01-31 23:01:29,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:01:29,621 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:01:29,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:01:29,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:01:29,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:01:29,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:01:29" (1/1) ... [2022-01-31 23:01:29,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@92dad90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:29, skipping insertion in model container [2022-01-31 23:01:29,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:01:29" (1/1) ... [2022-01-31 23:01:29,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:01:29,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:01:29,879 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_0681a.c[5435,5448] [2022-01-31 23:01:29,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:01:29,889 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:01:29,930 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_0681a.c[5435,5448] [2022-01-31 23:01:29,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:01:29,950 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:01:29,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:29 WrapperNode [2022-01-31 23:01:29,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:01:29,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:01:29,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:01:29,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:01:29,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:29" (1/1) ... [2022-01-31 23:01:29,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:29" (1/1) ... [2022-01-31 23:01:29,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:29" (1/1) ... [2022-01-31 23:01:29,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:29" (1/1) ... [2022-01-31 23:01:29,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:29" (1/1) ... [2022-01-31 23:01:30,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:29" (1/1) ... [2022-01-31 23:01:30,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:29" (1/1) ... [2022-01-31 23:01:30,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:01:30,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:01:30,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:01:30,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:01:30,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:29" (1/1) ... [2022-01-31 23:01:30,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:01:30,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:01:30,040 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 23:01:30,063 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 23:01:30,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:01:30,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:01:30,078 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:01:30,078 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2022-01-31 23:01:30,078 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2022-01-31 23:01:30,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2022-01-31 23:01:30,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2022-01-31 23:01:30,078 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:01:30,078 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:01:30,079 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:01:30,079 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:01:30,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:01:30,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-01-31 23:01:30,079 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2022-01-31 23:01:30,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 23:01:30,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-01-31 23:01:30,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:01:30,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:01:30,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:01:30,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-01-31 23:01:30,084 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2022-01-31 23:01:30,084 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2022-01-31 23:01:30,084 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2022-01-31 23:01:30,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:01:30,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:01:30,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:01:30,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-01-31 23:01:30,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:01:30,208 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:01:30,210 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:01:30,600 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:01:30,608 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:01:30,609 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-01-31 23:01:30,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:01:30 BoogieIcfgContainer [2022-01-31 23:01:30,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:01:30,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:01:30,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:01:30,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:01:30,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:01:29" (1/3) ... [2022-01-31 23:01:30,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28caa4c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:01:30, skipping insertion in model container [2022-01-31 23:01:30,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:29" (2/3) ... [2022-01-31 23:01:30,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28caa4c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:01:30, skipping insertion in model container [2022-01-31 23:01:30,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:01:30" (3/3) ... [2022-01-31 23:01:30,620 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0681a.c [2022-01-31 23:01:30,625 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:01:30,625 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:01:30,671 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:01:30,678 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 23:01:30,679 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:01:30,695 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 92 states have (on average 1.6195652173913044) internal successors, (149), 93 states have internal predecessors, (149), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 23:01:30,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-31 23:01:30,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:30,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:01:30,707 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:30,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:30,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1159869510, now seen corresponding path program 1 times [2022-01-31 23:01:30,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:30,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484283837] [2022-01-31 23:01:30,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:30,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:30,773 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:30,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:01:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:31,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:01:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:31,022 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 23:01:31,023 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:01:31,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484283837] [2022-01-31 23:01:31,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1484283837] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:01:31,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:01:31,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 23:01:31,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761959693] [2022-01-31 23:01:31,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:01:31,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 23:01:31,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:01:31,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 23:01:31,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 23:01:31,062 INFO L87 Difference]: Start difference. First operand has 108 states, 92 states have (on average 1.6195652173913044) internal successors, (149), 93 states have internal predecessors, (149), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 23:01:31,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:01:31,538 INFO L93 Difference]: Finished difference Result 208 states and 327 transitions. [2022-01-31 23:01:31,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 23:01:31,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-01-31 23:01:31,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:01:31,547 INFO L225 Difference]: With dead ends: 208 [2022-01-31 23:01:31,547 INFO L226 Difference]: Without dead ends: 104 [2022-01-31 23:01:31,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 23:01:31,553 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 131 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:01:31,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 138 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:01:31,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-01-31 23:01:31,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2022-01-31 23:01:31,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 90 states have (on average 1.4333333333333333) internal successors, (129), 90 states have internal predecessors, (129), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 23:01:31,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 144 transitions. [2022-01-31 23:01:31,605 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 144 transitions. Word has length 19 [2022-01-31 23:01:31,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:01:31,605 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 144 transitions. [2022-01-31 23:01:31,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 23:01:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 144 transitions. [2022-01-31 23:01:31,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-31 23:01:31,606 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:31,607 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] [2022-01-31 23:01:31,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:01:31,607 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:31,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:31,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1724383183, now seen corresponding path program 1 times [2022-01-31 23:01:31,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:31,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794286191] [2022-01-31 23:01:31,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:31,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:31,610 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:01:31,650 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 23:01:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:01:31,706 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 23:01:31,706 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 23:01:31,708 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 23:01:31,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:01:31,712 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 23:01:31,714 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 23:01:31,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:01:31 BoogieIcfgContainer [2022-01-31 23:01:31,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 23:01:31,725 INFO L158 Benchmark]: Toolchain (without parser) took 2104.11ms. Allocated memory was 190.8MB in the beginning and 256.9MB in the end (delta: 66.1MB). Free memory was 134.8MB in the beginning and 122.3MB in the end (delta: 12.5MB). Peak memory consumption was 77.3MB. Max. memory is 8.0GB. [2022-01-31 23:01:31,726 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 190.8MB. Free memory is still 151.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:01:31,726 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.57ms. Allocated memory was 190.8MB in the beginning and 256.9MB in the end (delta: 66.1MB). Free memory was 134.7MB in the beginning and 227.2MB in the end (delta: -92.5MB). Peak memory consumption was 15.1MB. Max. memory is 8.0GB. [2022-01-31 23:01:31,727 INFO L158 Benchmark]: Boogie Preprocessor took 55.81ms. Allocated memory is still 256.9MB. Free memory was 227.2MB in the beginning and 224.6MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-31 23:01:31,727 INFO L158 Benchmark]: RCFGBuilder took 603.07ms. Allocated memory is still 256.9MB. Free memory was 224.6MB in the beginning and 201.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-01-31 23:01:31,728 INFO L158 Benchmark]: TraceAbstraction took 1110.51ms. Allocated memory is still 256.9MB. Free memory was 201.0MB in the beginning and 122.3MB in the end (delta: 78.6MB). Peak memory consumption was 78.6MB. Max. memory is 8.0GB. [2022-01-31 23:01:31,730 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 190.8MB. Free memory is still 151.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 328.57ms. Allocated memory was 190.8MB in the beginning and 256.9MB in the end (delta: 66.1MB). Free memory was 134.7MB in the beginning and 227.2MB in the end (delta: -92.5MB). Peak memory consumption was 15.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 55.81ms. Allocated memory is still 256.9MB. Free memory was 227.2MB in the beginning and 224.6MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 603.07ms. Allocated memory is still 256.9MB. Free memory was 224.6MB in the beginning and 201.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 1110.51ms. Allocated memory is still 256.9MB. Free memory was 201.0MB in the beginning and 122.3MB in the end (delta: 78.6MB). Peak memory consumption was 78.6MB. 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 240, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 135, overapproximation of someUnaryFLOAToperation at line 236, 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; [L235] float x = 0.0f; [L236] float y = -0.0f; [L237] 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; [L237] RET, EXPR __ieee754_atan2f(y, x) [L237] float res = __ieee754_atan2f(y, x); [L240] EXPR res == -0.0f && __signbit_float(res) == 1 [L240] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L241] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 111 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 136 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 131 mSDsluCounter, 138 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 148 IncrementalHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 136 mSDtfsCounter, 148 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred 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 23:01:31,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...