/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 12:54:09,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:54:09,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:54:09,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:54:09,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:54:09,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:54:09,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:54:09,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:54:09,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:54:09,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:54:09,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:54:09,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:54:09,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:54:09,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:54:09,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:54:09,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:54:09,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:54:09,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:54:09,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:54:09,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:54:09,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:54:09,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:54:09,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:54:09,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:54:09,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 12:54:09,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 12:54:09,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 12:54:09,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 12:54:09,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 12:54:09,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 12:54:09,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 12:54:09,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 12:54:09,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 12:54:09,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 12:54:09,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 12:54:09,801 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 12:54:09,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 12:54:09,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 12:54:09,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:54:09,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:54:09,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:54:09,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 12:54:09,827 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:54:09,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:54:09,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:54:09,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:54:09,829 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:54:09,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:54:09,829 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 12:54:09,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:54:09,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 12:54:09,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:54:09,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:54:09,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:54:09,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:54:09,830 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 12:54:09,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:54:09,831 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:54:09,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:54:09,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:54:09,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:54:09,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:54:09,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:54:09,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:54:09,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:54:09,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:54:09,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:54:09,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:54:09,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:54:09,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:54:09,833 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:54:09,833 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 12:54:10,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:54:10,170 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:54:10,174 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:54:10,175 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:54:10,176 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:54:10,177 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-18 12:54:10,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e57be7574/eb35cec0369441b08658e714cdda0bf0/FLAG66fb2c4ec [2020-08-18 12:54:10,703 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:54:10,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-18 12:54:10,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e57be7574/eb35cec0369441b08658e714cdda0bf0/FLAG66fb2c4ec [2020-08-18 12:54:11,050 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e57be7574/eb35cec0369441b08658e714cdda0bf0 [2020-08-18 12:54:11,059 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:54:11,061 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:54:11,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:54:11,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:54:11,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:54:11,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:54:11" (1/1) ... [2020-08-18 12:54:11,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b4cf71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:54:11, skipping insertion in model container [2020-08-18 12:54:11,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:54:11" (1/1) ... [2020-08-18 12:54:11,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:54:11,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:54:11,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:54:11,363 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:54:11,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:54:11,542 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:54:11,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:54:11 WrapperNode [2020-08-18 12:54:11,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:54:11,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:54:11,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:54:11,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:54:11,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:54:11" (1/1) ... [2020-08-18 12:54:11,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:54:11" (1/1) ... [2020-08-18 12:54:11,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:54:11" (1/1) ... [2020-08-18 12:54:11,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:54:11" (1/1) ... [2020-08-18 12:54:11,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:54:11" (1/1) ... [2020-08-18 12:54:11,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:54:11" (1/1) ... [2020-08-18 12:54:11,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:54:11" (1/1) ... [2020-08-18 12:54:11,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:54:11,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:54:11,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:54:11,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:54:11,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:54:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 12:54:11,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:54:11,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:54:11,687 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-18 12:54:11,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-18 12:54:11,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:54:11,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:54:11,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-18 12:54:11,688 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-18 12:54:11,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 12:54:11,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 12:54:11,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 12:54:11,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 12:54:11,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 12:54:11,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 12:54:11,689 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-18 12:54:11,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:54:11,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:54:11,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-18 12:54:11,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:54:12,161 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:54:12,161 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-18 12:54:12,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:54:12 BoogieIcfgContainer [2020-08-18 12:54:12,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:54:12,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:54:12,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:54:12,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:54:12,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:54:11" (1/3) ... [2020-08-18 12:54:12,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d137009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:54:12, skipping insertion in model container [2020-08-18 12:54:12,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:54:11" (2/3) ... [2020-08-18 12:54:12,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d137009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:54:12, skipping insertion in model container [2020-08-18 12:54:12,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:54:12" (3/3) ... [2020-08-18 12:54:12,174 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-08-18 12:54:12,184 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:54:12,192 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:54:12,206 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:54:12,227 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:54:12,227 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:54:12,228 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:54:12,228 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:54:12,228 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:54:12,228 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:54:12,228 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:54:12,228 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:54:12,249 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-08-18 12:54:12,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 12:54:12,257 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:54:12,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:54:12,258 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:54:12,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:54:12,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1920116781, now seen corresponding path program 1 times [2020-08-18 12:54:12,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:54:12,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927584482] [2020-08-18 12:54:12,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:54:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:54:12,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:54:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:54:12,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 12:54:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:54:12,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:54:12,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927584482] [2020-08-18 12:54:12,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:54:12,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 12:54:12,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236565914] [2020-08-18 12:54:12,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 12:54:12,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:54:12,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 12:54:12,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:54:12,557 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2020-08-18 12:54:12,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:54:12,834 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2020-08-18 12:54:12,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 12:54:12,836 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-18 12:54:12,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:54:12,848 INFO L225 Difference]: With dead ends: 116 [2020-08-18 12:54:12,849 INFO L226 Difference]: Without dead ends: 56 [2020-08-18 12:54:12,853 INFO L675 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 [2020-08-18 12:54:12,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-08-18 12:54:12,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-08-18 12:54:12,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-18 12:54:12,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-08-18 12:54:12,907 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2020-08-18 12:54:12,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:54:12,907 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-08-18 12:54:12,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 12:54:12,908 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-08-18 12:54:12,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 12:54:12,909 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:54:12,909 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] [2020-08-18 12:54:12,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:54:12,910 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:54:12,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:54:12,911 INFO L82 PathProgramCache]: Analyzing trace with hash -2095475350, now seen corresponding path program 1 times [2020-08-18 12:54:12,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:54:12,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476880871] [2020-08-18 12:54:12,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:54:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 12:54:12,979 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 12:54:12,980 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 12:54:12,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:54:13,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 12:54:13 BoogieIcfgContainer [2020-08-18 12:54:13,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 12:54:13,010 INFO L168 Benchmark]: Toolchain (without parser) took 1947.69 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.1 MB in the beginning and 96.4 MB in the end (delta: 6.7 MB). Peak memory consumption was 70.2 MB. Max. memory is 7.1 GB. [2020-08-18 12:54:13,011 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 12:54:13,012 INFO L168 Benchmark]: CACSL2BoogieTranslator took 481.36 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.7 MB in the beginning and 180.3 MB in the end (delta: -77.6 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-08-18 12:54:13,013 INFO L168 Benchmark]: Boogie Preprocessor took 71.73 ms. Allocated memory is still 203.9 MB. Free memory was 180.3 MB in the beginning and 177.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-18 12:54:13,014 INFO L168 Benchmark]: RCFGBuilder took 550.57 ms. Allocated memory is still 203.9 MB. Free memory was 177.7 MB in the beginning and 149.3 MB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2020-08-18 12:54:13,015 INFO L168 Benchmark]: TraceAbstraction took 839.45 ms. Allocated memory is still 203.9 MB. Free memory was 148.7 MB in the beginning and 96.4 MB in the end (delta: 52.3 MB). Peak memory consumption was 52.3 MB. Max. memory is 7.1 GB. [2020-08-18 12:54:13,019 INFO L336 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 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 481.36 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.7 MB in the beginning and 180.3 MB in the end (delta: -77.6 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.73 ms. Allocated memory is still 203.9 MB. Free memory was 180.3 MB in the beginning and 177.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 550.57 ms. Allocated memory is still 203.9 MB. Free memory was 177.7 MB in the beginning and 149.3 MB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 839.45 ms. Allocated memory is still 203.9 MB. Free memory was 148.7 MB in the beginning and 96.4 MB in the end (delta: 52.3 MB). Peak memory consumption was 52.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of bitwiseXor at line 31, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L126] float x = 0.0f; [L127] float y = __VERIFIER_nondet_float(); [L129] COND TRUE (y < 0.0f || y > 0.0f) [L131] CALL, EXPR fmod_float(x, y) [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); [L131] RET, EXPR fmod_float(x, y) [L131] float res = fmod_float(x, y); [L134] EXPR res == 0.0f && __signbit_float(res) == 0 [L134] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 75 SDtfs, 14 SDslu, 61 SDs, 0 SdLazy, 80 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, 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, 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: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...