/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:10:49,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:10:49,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:10:49,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:10:49,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:10:49,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:10:49,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:10:49,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:10:49,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:10:49,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:10:49,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:10:49,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:10:49,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:10:49,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:10:49,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:10:49,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:10:49,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:10:49,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:10:49,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:10:49,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:10:49,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:10:49,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:10:49,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:10:49,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:10:49,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:10:49,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 20:10:49,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 20:10:49,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 20:10:49,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 20:10:49,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 20:10:49,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 20:10:49,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 20:10:49,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 20:10:49,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:10:49,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:10:49,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:10:49,804 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:10:49,826 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:10:49,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:10:49,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:10:49,830 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:10:49,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:10:49,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:10:49,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:10:49,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:10:49,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:10:49,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:10:49,833 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:10:49,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:10:49,833 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:10:49,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:10:49,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:10:49,834 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:10:49,834 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:10:49,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:10:49,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:10:49,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:10:49,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:10:49,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:10:49,835 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:10:50,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:10:50,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:10:50,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:10:50,278 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:10:50,279 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:10:50,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2021-02-21 20:10:50,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/533e966f3/90be4f64c62f417e89c1532d858c6a66/FLAGad8d1ca78 [2021-02-21 20:10:51,085 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:10:51,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2021-02-21 20:10:51,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/533e966f3/90be4f64c62f417e89c1532d858c6a66/FLAGad8d1ca78 [2021-02-21 20:10:51,415 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/533e966f3/90be4f64c62f417e89c1532d858c6a66 [2021-02-21 20:10:51,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:10:51,433 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:10:51,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:51,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:10:51,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:10:51,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:51" (1/1) ... [2021-02-21 20:10:51,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@398b2e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:51, skipping insertion in model container [2021-02-21 20:10:51,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:51" (1/1) ... [2021-02-21 20:10:51,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:10:51,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:10:51,722 WARN L226 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_1131b.c[2947,2960] [2021-02-21 20:10:51,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:51,736 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:10:51,787 WARN L226 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_1131b.c[2947,2960] [2021-02-21 20:10:51,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:51,818 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:10:51,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:51 WrapperNode [2021-02-21 20:10:51,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:51,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:10:51,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:10:51,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:10:51,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:51" (1/1) ... [2021-02-21 20:10:51,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:51" (1/1) ... [2021-02-21 20:10:51,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:51" (1/1) ... [2021-02-21 20:10:51,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:51" (1/1) ... [2021-02-21 20:10:51,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:51" (1/1) ... [2021-02-21 20:10:51,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:51" (1/1) ... [2021-02-21 20:10:51,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:51" (1/1) ... [2021-02-21 20:10:51,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:10:51,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:10:51,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:10:51,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:10:51,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:10:52,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:10:52,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:10:52,061 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:10:52,062 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2021-02-21 20:10:52,062 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2021-02-21 20:10:52,062 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:10:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:10:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:10:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:10:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:10:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2021-02-21 20:10:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2021-02-21 20:10:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 20:10:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:10:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:10:52,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 20:10:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:10:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2021-02-21 20:10:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:10:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:10:52,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:10:52,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-21 20:10:52,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:10:52,898 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:10:52,898 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-02-21 20:10:52,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:52 BoogieIcfgContainer [2021-02-21 20:10:52,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:10:52,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:10:52,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:10:52,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:10:52,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:10:51" (1/3) ... [2021-02-21 20:10:52,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2992b00c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:52, skipping insertion in model container [2021-02-21 20:10:52,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:51" (2/3) ... [2021-02-21 20:10:52,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2992b00c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:52, skipping insertion in model container [2021-02-21 20:10:52,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:52" (3/3) ... [2021-02-21 20:10:52,908 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2021-02-21 20:10:52,915 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:10:52,920 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:10:52,938 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:10:52,963 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:10:52,963 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:10:52,964 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:10:52,964 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:10:52,964 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:10:52,964 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:10:52,964 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:10:52,965 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:10:52,984 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2021-02-21 20:10:52,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-02-21 20:10:52,996 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:52,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:10:52,997 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:53,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:53,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1375230170, now seen corresponding path program 1 times [2021-02-21 20:10:53,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:53,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141653471] [2021-02-21 20:10:53,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:53,081 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:53,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:53,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:53,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:53,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:53,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:10:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:53,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:53,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:53,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 20:10:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:53,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:53,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:53,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:53,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:53,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 20:10:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:53,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:53,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:53,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:53,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:53,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:10:53,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141653471] [2021-02-21 20:10:53,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:10:53,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:10:53,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350953975] [2021-02-21 20:10:53,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:10:53,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:10:53,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:10:53,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:10:53,447 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 4 states. [2021-02-21 20:10:54,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:10:54,122 INFO L93 Difference]: Finished difference Result 291 states and 354 transitions. [2021-02-21 20:10:54,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:10:54,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2021-02-21 20:10:54,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:10:54,138 INFO L225 Difference]: With dead ends: 291 [2021-02-21 20:10:54,138 INFO L226 Difference]: Without dead ends: 150 [2021-02-21 20:10:54,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 20:10:54,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-02-21 20:10:54,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-02-21 20:10:54,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2021-02-21 20:10:54,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2021-02-21 20:10:54,211 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 54 [2021-02-21 20:10:54,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:10:54,212 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2021-02-21 20:10:54,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:10:54,212 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2021-02-21 20:10:54,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-02-21 20:10:54,215 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:54,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:10:54,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:10:54,216 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:54,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:54,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1426054672, now seen corresponding path program 1 times [2021-02-21 20:10:54,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:54,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422281524] [2021-02-21 20:10:54,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:54,221 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:10:54,341 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:10:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:10:54,456 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:10:54,516 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:10:54,517 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:10:54,518 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:10:54,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:10:54 BoogieIcfgContainer [2021-02-21 20:10:54,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:10:54,546 INFO L168 Benchmark]: Toolchain (without parser) took 3124.07 ms. Allocated memory is still 157.3 MB. Free memory was 132.9 MB in the beginning and 84.3 MB in the end (delta: 48.6 MB). Peak memory consumption was 48.8 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:54,548 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 157.3 MB. Free memory is still 131.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:10:54,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.37 ms. Allocated memory is still 157.3 MB. Free memory was 131.7 MB in the beginning and 119.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:54,551 INFO L168 Benchmark]: Boogie Preprocessor took 111.10 ms. Allocated memory is still 157.3 MB. Free memory was 119.5 MB in the beginning and 117.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:54,552 INFO L168 Benchmark]: RCFGBuilder took 964.69 ms. Allocated memory is still 157.3 MB. Free memory was 117.3 MB in the beginning and 115.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 14.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:54,553 INFO L168 Benchmark]: TraceAbstraction took 1641.72 ms. Allocated memory is still 157.3 MB. Free memory was 114.8 MB in the beginning and 84.3 MB in the end (delta: 30.5 MB). Peak memory consumption was 30.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:54,563 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 157.3 MB. Free memory is still 131.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 381.37 ms. Allocated memory is still 157.3 MB. Free memory was 131.7 MB in the beginning and 119.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 111.10 ms. Allocated memory is still 157.3 MB. Free memory was 119.5 MB in the beginning and 117.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 964.69 ms. Allocated memory is still 157.3 MB. Free memory was 117.3 MB in the beginning and 115.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 14.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1641.72 ms. Allocated memory is still 157.3 MB. Free memory was 114.8 MB in the beginning and 84.3 MB in the end (delta: 30.5 MB). Peak memory consumption was 30.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 34, 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, 160 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 169 SDtfs, 31 SDslu, 123 SDs, 0 SdLazy, 185 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=157occurred in iteration=0, 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 Received shutdown request...