/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_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:20:57,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:20:57,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:20:57,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-01 00:20:57,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-01 00:20:57,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-01 00:20:57,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-01 00:20:57,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-01 00:20:57,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-01 00:20:57,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-01 00:20:57,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-01 00:20:57,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-01 00:20:57,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-01 00:20:57,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-01 00:20:57,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-01 00:20:57,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-01 00:20:57,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-01 00:20:57,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-01 00:20:57,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-01 00:20:57,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-01 00:20:57,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-01 00:20:57,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-01 00:20:57,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-01 00:20:57,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-01 00:20:57,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-01 00:20:57,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-01 00:20:57,696 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-01 00:20:57,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-01 00:20:57,697 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-01 00:20:57,698 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-01 00:20:57,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-01 00:20:57,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-01 00:20:57,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-01 00:20:57,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-01 00:20:57,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-01 00:20:57,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-01 00:20:57,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-01 00:20:57,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-01 00:20:57,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:20:57,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:20:57,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:20:57,706 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 00:20:57,718 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:20:57,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:20:57,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:20:57,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:20:57,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:20:57,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:20:57,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:20:57,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:20:57,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:20:57,720 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:20:57,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:20:57,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:20:57,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:20:57,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:20:57,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:20:57,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:20:57,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:20:57,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:20:57,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:20:57,722 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:20:57,722 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:20:57,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:20:57,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:20:57,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:20:57,930 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:20:57,930 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:20:57,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131a.c [2022-02-01 00:20:57,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4244bd4ff/33efd4fe24cf471a909f419ab86e78e1/FLAG736eb97bb [2022-02-01 00:20:58,335 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:20:58,335 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131a.c [2022-02-01 00:20:58,340 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4244bd4ff/33efd4fe24cf471a909f419ab86e78e1/FLAG736eb97bb [2022-02-01 00:20:58,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4244bd4ff/33efd4fe24cf471a909f419ab86e78e1 [2022-02-01 00:20:58,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:20:58,351 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:20:58,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:20:58,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:20:58,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:20:58,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:20:58" (1/1) ... [2022-02-01 00:20:58,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6acbe6ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:58, skipping insertion in model container [2022-02-01 00:20:58,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:20:58" (1/1) ... [2022-02-01 00:20:58,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:20:58,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:20:58,589 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_1131a.c[2945,2958] [2022-02-01 00:20:58,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:20:58,616 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:20:58,647 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_1131a.c[2945,2958] [2022-02-01 00:20:58,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:20:58,676 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:20:58,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:58 WrapperNode [2022-02-01 00:20:58,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:20:58,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:20:58,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:20:58,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:20:58,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:58" (1/1) ... [2022-02-01 00:20:58,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:58" (1/1) ... [2022-02-01 00:20:58,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:58" (1/1) ... [2022-02-01 00:20:58,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:58" (1/1) ... [2022-02-01 00:20:58,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:58" (1/1) ... [2022-02-01 00:20:58,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:58" (1/1) ... [2022-02-01 00:20:58,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:58" (1/1) ... [2022-02-01 00:20:58,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:20:58,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:20:58,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:20:58,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:20:58,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:58" (1/1) ... [2022-02-01 00:20:58,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:20:58,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:20:58,816 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 00:20:58,823 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 00:20:58,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:20:58,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:20:58,845 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:20:58,845 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2022-02-01 00:20:58,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2022-02-01 00:20:58,846 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:20:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:20:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:20:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:20:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:20:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-02-01 00:20:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2022-02-01 00:20:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-01 00:20:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-01 00:20:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:20:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:20:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-01 00:20:58,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:20:58,847 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2022-02-01 00:20:58,847 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:20:58,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:20:58,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:20:58,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-02-01 00:20:58,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:20:58,950 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:20:58,951 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:20:59,174 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:20:59,178 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:20:59,178 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-02-01 00:20:59,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:20:59 BoogieIcfgContainer [2022-02-01 00:20:59,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:20:59,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:20:59,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:20:59,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:20:59,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:20:58" (1/3) ... [2022-02-01 00:20:59,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c0b290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:20:59, skipping insertion in model container [2022-02-01 00:20:59,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:58" (2/3) ... [2022-02-01 00:20:59,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c0b290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:20:59, skipping insertion in model container [2022-02-01 00:20:59,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:20:59" (3/3) ... [2022-02-01 00:20:59,185 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131a.c [2022-02-01 00:20:59,188 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:20:59,188 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:20:59,231 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:20:59,237 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 00:20:59,237 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:20:59,256 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 50 states have (on average 1.66) internal successors, (83), 51 states have internal predecessors, (83), 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) [2022-02-01 00:20:59,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-01 00:20:59,263 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:20:59,264 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] [2022-02-01 00:20:59,264 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:20:59,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:20:59,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1365987300, now seen corresponding path program 1 times [2022-02-01 00:20:59,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:20:59,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203681409] [2022-02-01 00:20:59,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:20:59,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:20:59,316 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:20:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:59,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:20:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:59,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:20:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:59,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-02-01 00:20:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:59,497 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 00:20:59,498 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:20:59,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203681409] [2022-02-01 00:20:59,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1203681409] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:20:59,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:20:59,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-01 00:20:59,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782337337] [2022-02-01 00:20:59,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:20:59,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-01 00:20:59,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:20:59,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-01 00:20:59,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:20:59,525 INFO L87 Difference]: Start difference. First operand has 60 states, 50 states have (on average 1.66) internal successors, (83), 51 states have internal predecessors, (83), 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 4.5) internal successors, (18), 2 states have internal predecessors, (18), 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 00:20:59,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:20:59,687 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2022-02-01 00:20:59,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-01 00:20:59,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 2 states have internal predecessors, (18), 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 25 [2022-02-01 00:20:59,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:20:59,693 INFO L225 Difference]: With dead ends: 112 [2022-02-01 00:20:59,693 INFO L226 Difference]: Without dead ends: 55 [2022-02-01 00:20:59,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-01 00:20:59,698 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 67 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-01 00:20:59,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 70 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-01 00:20:59,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-02-01 00:20:59,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-02-01 00:20:59,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 47 states have internal predecessors, (63), 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) [2022-02-01 00:20:59,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2022-02-01 00:20:59,725 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2022-02-01 00:20:59,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:20:59,725 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2022-02-01 00:20:59,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 2 states have internal predecessors, (18), 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 00:20:59,726 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2022-02-01 00:20:59,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-01 00:20:59,726 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:20:59,726 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] [2022-02-01 00:20:59,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:20:59,727 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:20:59,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:20:59,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1407551246, now seen corresponding path program 1 times [2022-02-01 00:20:59,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:20:59,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209864628] [2022-02-01 00:20:59,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:20:59,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:20:59,729 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:20:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:20:59,800 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:20:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:20:59,846 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:20:59,846 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:20:59,848 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:20:59,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:20:59,851 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:20:59,853 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:20:59,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:20:59 BoogieIcfgContainer [2022-02-01 00:20:59,862 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:20:59,862 INFO L158 Benchmark]: Toolchain (without parser) took 1511.42ms. Allocated memory is still 168.8MB. Free memory was 122.6MB in the beginning and 140.3MB in the end (delta: -17.7MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:20:59,863 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 168.8MB. Free memory is still 139.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:20:59,865 INFO L158 Benchmark]: CACSL2BoogieTranslator took 323.58ms. Allocated memory is still 168.8MB. Free memory was 122.4MB in the beginning and 146.3MB in the end (delta: -23.9MB). Peak memory consumption was 13.5MB. Max. memory is 8.0GB. [2022-02-01 00:20:59,865 INFO L158 Benchmark]: Boogie Preprocessor took 94.49ms. Allocated memory is still 168.8MB. Free memory was 146.3MB in the beginning and 144.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-01 00:20:59,866 INFO L158 Benchmark]: RCFGBuilder took 406.64ms. Allocated memory is still 168.8MB. Free memory was 144.0MB in the beginning and 128.6MB in the end (delta: 15.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-02-01 00:20:59,866 INFO L158 Benchmark]: TraceAbstraction took 681.14ms. Allocated memory is still 168.8MB. Free memory was 127.8MB in the beginning and 140.3MB in the end (delta: -12.4MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:20:59,868 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 168.8MB. Free memory is still 139.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 323.58ms. Allocated memory is still 168.8MB. Free memory was 122.4MB in the beginning and 146.3MB in the end (delta: -23.9MB). Peak memory consumption was 13.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 94.49ms. Allocated memory is still 168.8MB. Free memory was 146.3MB in the beginning and 144.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 406.64ms. Allocated memory is still 168.8MB. Free memory was 144.0MB in the beginning and 128.6MB in the end (delta: 15.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 681.14ms. Allocated memory is still 168.8MB. Free memory was 127.8MB in the beginning and 140.3MB in the end (delta: -12.4MB). There was no memory consumed. 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: 137]: 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 136, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseXor at line 33. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L128] float x = __VERIFIER_nondet_float(); [L129] float y = 1.0f / 0.0f; [L131] CALL isfinite_float(x) [L111] __int32_t ix; [L113] ieee_float_shape_type gf_u; [L114] gf_u.value = (x) [L115] EXPR gf_u.word [L115] (ix) = gf_u.word [L117] ix &= 0x7fffffff [L118] return (((ix) < 0x7f800000L)); [L131] RET isfinite_float(x) [L131] COND TRUE isfinite_float(x) [L133] CALL, EXPR fmod_float(x, y) [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); [L133] RET, EXPR fmod_float(x, y) [L133] float res = fmod_float(x, y); [L136] COND TRUE res != x [L137] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 63 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, 68 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 67 mSDsluCounter, 70 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 78 IncrementalHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 68 mSDtfsCounter, 78 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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 00:20:59,906 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...