/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 0.2.0-7d8eed3 [2020-11-07 00:25:01,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:25:01,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:25:01,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:25:01,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:25:01,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:25:01,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:25:01,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:25:01,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:25:01,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:25:01,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:25:01,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:25:01,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:25:01,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:25:01,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:25:01,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:25:01,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:25:01,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:25:01,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:25:01,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:25:01,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:25:01,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:25:01,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:25:01,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:25:01,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 00:25:01,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 00:25:01,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 00:25:01,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 00:25:01,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 00:25:01,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 00:25:01,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 00:25:01,877 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 00:25:01,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 00:25:01,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 00:25:01,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 00:25:01,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 00:25:01,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 00:25:01,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 00:25:01,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:25:01,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:25:01,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:25:01,887 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:25:01,909 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:25:01,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:25:01,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:25:01,915 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:25:01,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:25:01,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:25:01,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:25:01,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:25:01,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:25:01,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:25:01,918 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:25:01,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:25:01,918 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:25:01,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:25:01,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:25:01,920 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:25:01,920 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:25:01,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:25:01,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:25:01,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:25:01,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:25:01,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:25:01,921 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:25:02,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:25:02,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:25:02,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:25:02,372 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:25:02,373 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:25:02,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-11-07 00:25:02,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f21ea7a27/0f1880179eff4868bd5138f5d7c5e64e/FLAG35b9ab257 [2020-11-07 00:25:03,129 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:25:03,130 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-11-07 00:25:03,142 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f21ea7a27/0f1880179eff4868bd5138f5d7c5e64e/FLAG35b9ab257 [2020-11-07 00:25:03,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f21ea7a27/0f1880179eff4868bd5138f5d7c5e64e [2020-11-07 00:25:03,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:25:03,514 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:25:03,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:25:03,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:25:03,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:25:03,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:25:03" (1/1) ... [2020-11-07 00:25:03,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@579224ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:03, skipping insertion in model container [2020-11-07 00:25:03,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:25:03" (1/1) ... [2020-11-07 00:25:03,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:25:03,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:25:03,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:25:03,812 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:25:03,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:25:03,874 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:25:03,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:03 WrapperNode [2020-11-07 00:25:03,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:25:03,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:25:03,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:25:03,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:25:03,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:03" (1/1) ... [2020-11-07 00:25:03,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:03" (1/1) ... [2020-11-07 00:25:03,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:03" (1/1) ... [2020-11-07 00:25:03,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:03" (1/1) ... [2020-11-07 00:25:03,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:03" (1/1) ... [2020-11-07 00:25:03,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:03" (1/1) ... [2020-11-07 00:25:03,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:03" (1/1) ... [2020-11-07 00:25:03,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:25:03,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:25:03,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:25:03,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:25:03,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:03" (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 [2020-11-07 00:25:04,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:25:04,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:25:04,030 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:25:04,030 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-11-07 00:25:04,031 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-11-07 00:25:04,031 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:25:04,031 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:25:04,031 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:25:04,032 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:25:04,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:25:04,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-11-07 00:25:04,032 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-11-07 00:25:04,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-07 00:25:04,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:25:04,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:25:04,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-07 00:25:04,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:25:04,034 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-11-07 00:25:04,035 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:25:04,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:25:04,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:25:04,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-07 00:25:04,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:25:04,919 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:25:04,920 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-07 00:25:04,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:25:04 BoogieIcfgContainer [2020-11-07 00:25:04,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:25:04,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:25:04,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:25:04,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:25:04,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:25:03" (1/3) ... [2020-11-07 00:25:04,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b4eb65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:25:04, skipping insertion in model container [2020-11-07 00:25:04,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:03" (2/3) ... [2020-11-07 00:25:04,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b4eb65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:25:04, skipping insertion in model container [2020-11-07 00:25:04,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:25:04" (3/3) ... [2020-11-07 00:25:04,937 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-11-07 00:25:04,956 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:25:04,962 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:25:04,976 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:25:05,014 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:25:05,014 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:25:05,014 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:25:05,014 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:25:05,014 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:25:05,015 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:25:05,015 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:25:05,015 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:25:05,046 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-11-07 00:25:05,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-07 00:25:05,063 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:05,064 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] [2020-11-07 00:25:05,064 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:05,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:05,073 INFO L82 PathProgramCache]: Analyzing trace with hash -682848670, now seen corresponding path program 1 times [2020-11-07 00:25:05,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:05,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854297357] [2020-11-07 00:25:05,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:05,167 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:05,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:25:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:05,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-07 00:25:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:05,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 00:25:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:05,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:25:05,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854297357] [2020-11-07 00:25:05,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:25:05,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:25:05,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530564581] [2020-11-07 00:25:05,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:25:05,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:25:05,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:25:05,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:25:05,509 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 4 states. [2020-11-07 00:25:06,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:25:06,015 INFO L93 Difference]: Finished difference Result 315 states and 379 transitions. [2020-11-07 00:25:06,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:25:06,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-11-07 00:25:06,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:25:06,029 INFO L225 Difference]: With dead ends: 315 [2020-11-07 00:25:06,029 INFO L226 Difference]: Without dead ends: 161 [2020-11-07 00:25:06,035 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 [2020-11-07 00:25:06,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-11-07 00:25:06,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-11-07 00:25:06,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-11-07 00:25:06,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 176 transitions. [2020-11-07 00:25:06,095 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 176 transitions. Word has length 55 [2020-11-07 00:25:06,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:25:06,096 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 176 transitions. [2020-11-07 00:25:06,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:25:06,096 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 176 transitions. [2020-11-07 00:25:06,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-11-07 00:25:06,099 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:06,100 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, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:25:06,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:25:06,100 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:06,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:06,101 INFO L82 PathProgramCache]: Analyzing trace with hash 323090980, now seen corresponding path program 1 times [2020-11-07 00:25:06,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:06,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684168113] [2020-11-07 00:25:06,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:06,105 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:25:06,197 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:25:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:25:06,292 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:25:06,338 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:25:06,338 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:25:06,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:25:06,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:25:06 BoogieIcfgContainer [2020-11-07 00:25:06,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:25:06,362 INFO L168 Benchmark]: Toolchain (without parser) took 2852.73 ms. Allocated memory is still 155.2 MB. Free memory was 131.6 MB in the beginning and 75.6 MB in the end (delta: 55.9 MB). Peak memory consumption was 57.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:06,363 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory is still 130.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:25:06,364 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.13 ms. Allocated memory is still 155.2 MB. Free memory was 131.0 MB in the beginning and 119.3 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:06,365 INFO L168 Benchmark]: Boogie Preprocessor took 59.37 ms. Allocated memory is still 155.2 MB. Free memory was 119.3 MB in the beginning and 117.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:06,365 INFO L168 Benchmark]: RCFGBuilder took 986.83 ms. Allocated memory is still 155.2 MB. Free memory was 116.9 MB in the beginning and 113.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:06,366 INFO L168 Benchmark]: TraceAbstraction took 1431.60 ms. Allocated memory is still 155.2 MB. Free memory was 113.3 MB in the beginning and 75.6 MB in the end (delta: 37.7 MB). Peak memory consumption was 38.2 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:06,370 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory is still 130.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 351.13 ms. Allocated memory is still 155.2 MB. Free memory was 131.0 MB in the beginning and 119.3 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.37 ms. Allocated memory is still 155.2 MB. Free memory was 119.3 MB in the beginning and 117.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 986.83 ms. Allocated memory is still 155.2 MB. Free memory was 116.9 MB in the beginning and 113.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1431.60 ms. Allocated memory is still 155.2 MB. Free memory was 113.3 MB in the beginning and 75.6 MB in the end (delta: 37.7 MB). Peak memory consumption was 38.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() 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] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1131b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 170 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 180 SDtfs, 33 SDslu, 127 SDs, 0 SdLazy, 199 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=170occurred 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...