/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_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:02:42,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:02:42,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:02:42,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 23:02:42,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 23:02:42,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 23:02:42,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 23:02:42,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 23:02:42,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 23:02:42,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 23:02:42,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 23:02:42,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 23:02:42,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:02:42,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:02:42,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:02:42,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:02:42,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:02:42,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:02:42,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:02:42,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:02:42,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:02:42,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:02:42,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:02:42,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:02:42,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 23:02:42,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 23:02:42,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 23:02:42,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 23:02:42,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 23:02:42,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 23:02:42,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 23:02:42,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 23:02:42,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 23:02:42,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 23:02:42,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 23:02:42,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 23:02:42,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 23:02:42,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 23:02:42,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:02:42,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:02:42,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:02:42,514 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 23:02:42,520 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:02:42,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:02:42,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:02:42,521 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 23:02:42,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:02:42,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 23:02:42,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:02:42,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:02:42,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:02:42,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:02:42,522 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 23:02:42,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:02:42,523 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:02:42,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:02:42,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:02:42,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:02:42,523 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:02:42,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:02:42,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:02:42,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:02:42,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:02:42,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:02:42,524 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 23:02:42,524 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:02:42,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:02:42,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:02:42,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:02:42,709 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:02:42,710 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:02:42,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131a.c [2022-01-31 23:02:42,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a46cb27e/7a047947c3444df9af6c1c7fb7829642/FLAGcc8cdc062 [2022-01-31 23:02:43,146 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:02:43,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131a.c [2022-01-31 23:02:43,153 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a46cb27e/7a047947c3444df9af6c1c7fb7829642/FLAGcc8cdc062 [2022-01-31 23:02:43,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a46cb27e/7a047947c3444df9af6c1c7fb7829642 [2022-01-31 23:02:43,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:02:43,171 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:02:43,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:02:43,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:02:43,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:02:43,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:02:43" (1/1) ... [2022-01-31 23:02:43,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61214fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:43, skipping insertion in model container [2022-01-31 23:02:43,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:02:43" (1/1) ... [2022-01-31 23:02:43,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:02:43,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:02:43,336 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] [2022-01-31 23:02:43,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:02:43,345 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:02:43,368 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] [2022-01-31 23:02:43,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:02:43,386 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:02:43,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:43 WrapperNode [2022-01-31 23:02:43,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:02:43,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:02:43,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:02:43,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:02:43,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:43" (1/1) ... [2022-01-31 23:02:43,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:43" (1/1) ... [2022-01-31 23:02:43,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:43" (1/1) ... [2022-01-31 23:02:43,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:43" (1/1) ... [2022-01-31 23:02:43,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:43" (1/1) ... [2022-01-31 23:02:43,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:43" (1/1) ... [2022-01-31 23:02:43,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:43" (1/1) ... [2022-01-31 23:02:43,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:02:43,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:02:43,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:02:43,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:02:43,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:43" (1/1) ... [2022-01-31 23:02:43,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:02:43,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:02:43,454 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 23:02:43,475 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 23:02:43,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:02:43,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:02:43,488 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:02:43,489 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2022-01-31 23:02:43,489 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2022-01-31 23:02:43,489 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:02:43,490 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:02:43,490 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:02:43,490 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:02:43,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:02:43,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-01-31 23:02:43,490 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2022-01-31 23:02:43,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 23:02:43,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-01-31 23:02:43,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:02:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:02:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-01-31 23:02:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:02:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2022-01-31 23:02:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:02:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:02:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:02:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-01-31 23:02:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:02:43,559 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:02:43,560 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:02:43,735 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:02:43,740 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:02:43,740 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-01-31 23:02:43,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:02:43 BoogieIcfgContainer [2022-01-31 23:02:43,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:02:43,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:02:43,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:02:43,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:02:43,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:02:43" (1/3) ... [2022-01-31 23:02:43,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f63008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:02:43, skipping insertion in model container [2022-01-31 23:02:43,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:43" (2/3) ... [2022-01-31 23:02:43,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f63008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:02:43, skipping insertion in model container [2022-01-31 23:02:43,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:02:43" (3/3) ... [2022-01-31 23:02:43,759 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131a.c [2022-01-31 23:02:43,762 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:02:43,762 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:02:43,792 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:02:43,797 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 23:02:43,797 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:02:43,807 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) [2022-01-31 23:02:43,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-31 23:02:43,815 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:43,815 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] [2022-01-31 23:02:43,816 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:43,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:43,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1365987300, now seen corresponding path program 1 times [2022-01-31 23:02:43,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:43,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392520312] [2022-01-31 23:02:43,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:43,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:43,872 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:44,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:02:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:44,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:02:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:44,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 23:02:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:44,057 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 23:02:44,058 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:02:44,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392520312] [2022-01-31 23:02:44,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [392520312] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:02:44,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:02:44,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 23:02:44,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650808434] [2022-01-31 23:02:44,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:02:44,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 23:02:44,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:02:44,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 23:02:44,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 23:02:44,093 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) [2022-01-31 23:02:44,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:02:44,281 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2022-01-31 23:02:44,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 23:02:44,285 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 [2022-01-31 23:02:44,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:02:44,293 INFO L225 Difference]: With dead ends: 112 [2022-01-31 23:02:44,293 INFO L226 Difference]: Without dead ends: 55 [2022-01-31 23:02:44,296 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 [2022-01-31 23:02:44,299 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 [2022-01-31 23:02:44,300 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] [2022-01-31 23:02:44,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-31 23:02:44,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-01-31 23:02:44,324 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) [2022-01-31 23:02:44,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2022-01-31 23:02:44,326 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2022-01-31 23:02:44,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:02:44,326 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2022-01-31 23:02:44,326 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) [2022-01-31 23:02:44,326 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2022-01-31 23:02:44,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-31 23:02:44,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:44,327 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] [2022-01-31 23:02:44,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:02:44,328 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:44,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:44,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1407551246, now seen corresponding path program 1 times [2022-01-31 23:02:44,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:44,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098255050] [2022-01-31 23:02:44,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:44,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:44,330 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:02:44,379 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 23:02:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:02:44,426 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 23:02:44,426 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 23:02:44,428 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 23:02:44,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:02:44,431 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 23:02:44,433 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 23:02:44,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:02:44 BoogieIcfgContainer [2022-01-31 23:02:44,440 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 23:02:44,441 INFO L158 Benchmark]: Toolchain (without parser) took 1269.55ms. Allocated memory is still 191.9MB. Free memory was 137.1MB in the beginning and 96.5MB in the end (delta: 40.5MB). Peak memory consumption was 40.5MB. Max. memory is 8.0GB. [2022-01-31 23:02:44,441 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 191.9MB. Free memory is still 153.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:02:44,441 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.94ms. Allocated memory is still 191.9MB. Free memory was 136.9MB in the beginning and 161.0MB in the end (delta: -24.1MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. [2022-01-31 23:02:44,442 INFO L158 Benchmark]: Boogie Preprocessor took 28.56ms. Allocated memory is still 191.9MB. Free memory was 161.0MB in the beginning and 158.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 23:02:44,442 INFO L158 Benchmark]: RCFGBuilder took 324.80ms. Allocated memory is still 191.9MB. Free memory was 158.9MB in the beginning and 143.2MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-01-31 23:02:44,442 INFO L158 Benchmark]: TraceAbstraction took 697.91ms. Allocated memory is still 191.9MB. Free memory was 142.7MB in the beginning and 96.5MB in the end (delta: 46.1MB). Peak memory consumption was 46.1MB. Max. memory is 8.0GB. [2022-01-31 23:02:44,444 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 191.9MB. Free memory is still 153.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 213.94ms. Allocated memory is still 191.9MB. Free memory was 136.9MB in the beginning and 161.0MB in the end (delta: -24.1MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.56ms. Allocated memory is still 191.9MB. Free memory was 161.0MB in the beginning and 158.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 324.80ms. Allocated memory is still 191.9MB. Free memory was 158.9MB in the beginning and 143.2MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 697.91ms. Allocated memory is still 191.9MB. Free memory was 142.7MB in the beginning and 96.5MB in the end (delta: 46.1MB). Peak memory consumption was 46.1MB. 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 [2022-01-31 23:02:44,471 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...