/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_1130b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:02:41,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:02:41,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:02:41,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 23:02:41,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 23:02:41,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 23:02:41,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 23:02:41,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 23:02:41,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 23:02:41,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 23:02:41,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 23:02:41,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 23:02:41,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:02:41,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:02:41,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:02:41,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:02:41,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:02:41,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:02:41,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:02:41,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:02:41,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:02:41,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:02:41,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:02:41,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:02:41,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 23:02:41,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 23:02:41,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 23:02:41,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 23:02:41,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 23:02:41,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 23:02:41,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 23:02:41,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 23:02:41,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 23:02:41,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 23:02:41,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 23:02:41,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 23:02:41,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 23:02:41,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 23:02:41,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:02:41,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:02:41,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:02:41,419 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 23:02:41,426 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:02:41,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:02:41,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:02:41,428 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 23:02:41,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:02:41,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 23:02:41,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:02:41,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:02:41,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:02:41,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:02:41,429 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 23:02:41,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:02:41,430 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:02:41,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:02:41,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:02:41,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:02:41,430 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:02:41,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:02:41,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:02:41,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:02:41,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:02:41,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:02:41,431 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 23:02:41,431 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:02:41,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:02:41,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:02:41,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:02:41,650 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:02:41,652 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:02:41,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130b.c [2022-01-31 23:02:41,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ed3c92be/a7fe7789dd2b41a78e1c90b1ec9cd0b3/FLAGa37c7cf30 [2022-01-31 23:02:42,031 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:02:42,032 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130b.c [2022-01-31 23:02:42,046 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ed3c92be/a7fe7789dd2b41a78e1c90b1ec9cd0b3/FLAGa37c7cf30 [2022-01-31 23:02:42,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ed3c92be/a7fe7789dd2b41a78e1c90b1ec9cd0b3 [2022-01-31 23:02:42,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:02:42,456 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:02:42,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:02:42,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:02:42,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:02:42,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:02:42" (1/1) ... [2022-01-31 23:02:42,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8d7652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:42, skipping insertion in model container [2022-01-31 23:02:42,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:02:42" (1/1) ... [2022-01-31 23:02:42,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:02:42,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:02:42,677 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_1130b.c[2909,2922] [2022-01-31 23:02:42,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:02:42,685 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:02:42,728 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_1130b.c[2909,2922] [2022-01-31 23:02:42,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:02:42,745 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:02:42,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:42 WrapperNode [2022-01-31 23:02:42,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:02:42,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:02:42,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:02:42,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:02:42,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:42" (1/1) ... [2022-01-31 23:02:42,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:42" (1/1) ... [2022-01-31 23:02:42,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:42" (1/1) ... [2022-01-31 23:02:42,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:42" (1/1) ... [2022-01-31 23:02:42,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:42" (1/1) ... [2022-01-31 23:02:42,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:42" (1/1) ... [2022-01-31 23:02:42,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:42" (1/1) ... [2022-01-31 23:02:42,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:02:42,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:02:42,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:02:42,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:02:42,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:42" (1/1) ... [2022-01-31 23:02:42,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:02:42,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:02:42,831 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 23:02:42,855 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 23:02:42,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:02:42,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:02:42,879 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:02:42,879 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2022-01-31 23:02:42,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2022-01-31 23:02:42,880 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:02:42,880 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:02:42,880 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:02:42,880 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:02:42,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:02:42,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-01-31 23:02:42,880 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2022-01-31 23:02:42,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 23:02:42,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-01-31 23:02:42,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:02:42,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:02:42,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-01-31 23:02:42,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:02:42,883 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2022-01-31 23:02:42,883 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:02:42,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:02:42,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:02:42,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-01-31 23:02:42,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:02:42,954 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:02:42,956 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:02:43,222 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:02:43,226 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:02:43,226 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-01-31 23:02:43,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:02:43 BoogieIcfgContainer [2022-01-31 23:02:43,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:02:43,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:02:43,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:02:43,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:02:43,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:02:42" (1/3) ... [2022-01-31 23:02:43,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f6bb14 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 23:02:43,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:42" (2/3) ... [2022-01-31 23:02:43,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f6bb14 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 23:02:43,234 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 23:02:43,235 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130b.c [2022-01-31 23:02:43,238 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:02:43,238 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:02:43,266 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:02:43,271 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 23:02:43,271 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:02:43,280 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 51 states have (on average 1.6666666666666667) internal successors, (85), 52 states have internal predecessors, (85), 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 23:02:43,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-31 23:02:43,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:43,286 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 23:02:43,287 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:43,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:43,290 INFO L85 PathProgramCache]: Analyzing trace with hash -684118545, now seen corresponding path program 1 times [2022-01-31 23:02:43,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:43,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632809932] [2022-01-31 23:02:43,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:43,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:43,339 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:43,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:02:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:43,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 23:02:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:43,482 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 23:02:43,483 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:02:43,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632809932] [2022-01-31 23:02:43,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [632809932] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:02:43,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:02:43,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 23:02:43,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900915059] [2022-01-31 23:02:43,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:02:43,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 23:02:43,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:02:43,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 23:02:43,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 23:02:43,513 INFO L87 Difference]: Start difference. First operand has 61 states, 51 states have (on average 1.6666666666666667) internal successors, (85), 52 states have internal predecessors, (85), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 3.5) 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 23:02:43,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:02:43,664 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2022-01-31 23:02:43,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 23:02:43,666 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 23:02:43,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:02:43,671 INFO L225 Difference]: With dead ends: 116 [2022-01-31 23:02:43,671 INFO L226 Difference]: Without dead ends: 56 [2022-01-31 23:02:43,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 23:02:43,676 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 75 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 72 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 23:02:43,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 72 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:02:43,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-01-31 23:02:43,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-01-31 23:02:43,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 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 23:02:43,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2022-01-31 23:02:43,705 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2022-01-31 23:02:43,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:02:43,705 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2022-01-31 23:02:43,705 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 23:02:43,705 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2022-01-31 23:02:43,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-31 23:02:43,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:43,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:02:43,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:02:43,706 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:43,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:43,707 INFO L85 PathProgramCache]: Analyzing trace with hash -799690004, now seen corresponding path program 1 times [2022-01-31 23:02:43,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:43,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153059858] [2022-01-31 23:02:43,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:43,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:43,709 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:02:43,745 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 23:02:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:02:43,781 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 23:02:43,781 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 23:02:43,783 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 23:02:43,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:02:43,786 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 23:02:43,788 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 23:02:43,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:02:43 BoogieIcfgContainer [2022-01-31 23:02:43,797 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 23:02:43,797 INFO L158 Benchmark]: Toolchain (without parser) took 1341.70ms. Allocated memory was 165.7MB in the beginning and 254.8MB in the end (delta: 89.1MB). Free memory was 108.8MB in the beginning and 163.2MB in the end (delta: -54.4MB). Peak memory consumption was 34.1MB. Max. memory is 8.0GB. [2022-01-31 23:02:43,798 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 165.7MB. Free memory was 125.6MB in the beginning and 125.5MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:02:43,798 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.01ms. Allocated memory was 165.7MB in the beginning and 254.8MB in the end (delta: 89.1MB). Free memory was 108.5MB in the beginning and 226.1MB in the end (delta: -117.5MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. [2022-01-31 23:02:43,798 INFO L158 Benchmark]: Boogie Preprocessor took 44.78ms. Allocated memory is still 254.8MB. Free memory was 226.1MB in the beginning and 224.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 23:02:43,799 INFO L158 Benchmark]: RCFGBuilder took 434.02ms. Allocated memory is still 254.8MB. Free memory was 224.0MB in the beginning and 206.7MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-01-31 23:02:43,799 INFO L158 Benchmark]: TraceAbstraction took 568.38ms. Allocated memory is still 254.8MB. Free memory was 206.2MB in the beginning and 163.2MB in the end (delta: 43.0MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. [2022-01-31 23:02:43,800 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 165.7MB. Free memory was 125.6MB in the beginning and 125.5MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 286.01ms. Allocated memory was 165.7MB in the beginning and 254.8MB in the end (delta: 89.1MB). Free memory was 108.5MB in the beginning and 226.1MB in the end (delta: -117.5MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.78ms. Allocated memory is still 254.8MB. Free memory was 226.1MB in the beginning and 224.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 434.02ms. Allocated memory is still 254.8MB. Free memory was 224.0MB in the beginning and 206.7MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 568.38ms. Allocated memory is still 254.8MB. Free memory was 206.2MB in the beginning and 163.2MB in the end (delta: 43.0MB). Peak memory consumption was 43.0MB. 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 someUnaryFLOAToperation at line 128, overapproximation of bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L128] float x = -0.0f; [L129] float y = __VERIFIER_nondet_float(); [L131] COND TRUE (y < 0.0f || y > 0.0f) [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] EXPR res == -0.0f && __signbit_float(res) == 1 [L136] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L137] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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, 76 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 75 mSDsluCounter, 72 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, 70 mSDtfsCounter, 78 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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 23:02:43,841 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...