/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 false -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 0.1.25-177f698 [2020-08-21 13:16:26,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:16:26,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:16:26,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:16:26,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:16:26,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:16:26,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:16:26,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:16:26,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:16:26,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:16:26,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:16:26,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:16:26,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:16:26,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:16:26,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:16:26,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:16:26,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:16:26,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:16:26,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:16:26,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:16:26,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:16:26,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:16:26,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:16:26,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:16:26,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:16:26,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:16:26,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:16:26,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:16:26,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:16:26,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:16:26,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:16:26,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:16:26,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:16:26,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:16:26,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:16:26,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:16:26,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:16:26,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:16:26,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:16:26,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:16:26,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:16:26,686 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 [2020-08-21 13:16:26,709 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:16:26,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:16:26,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:16:26,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:16:26,710 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:16:26,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:16:26,711 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:16:26,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:16:26,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:16:26,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:16:26,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:16:26,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:16:26,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:16:26,712 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:16:26,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:16:26,712 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:16:26,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:16:26,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:16:26,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:16:26,713 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:16:26,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:16:26,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:16:26,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:16:26,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:16:26,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:16:26,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:16:26,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:16:26,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:16:26,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:16:26,715 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 -> false [2020-08-21 13:16:27,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:16:27,055 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:16:27,059 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:16:27,060 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:16:27,061 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:16:27,061 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-21 13:16:27,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c411883a/8b7decefab184b308952e216d642164b/FLAGc258bbe3a [2020-08-21 13:16:27,573 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:16:27,574 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-21 13:16:27,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c411883a/8b7decefab184b308952e216d642164b/FLAGc258bbe3a [2020-08-21 13:16:27,988 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c411883a/8b7decefab184b308952e216d642164b [2020-08-21 13:16:27,998 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:16:28,000 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:16:28,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:16:28,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:16:28,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:16:28,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:16:27" (1/1) ... [2020-08-21 13:16:28,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e36d5a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:28, skipping insertion in model container [2020-08-21 13:16:28,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:16:27" (1/1) ... [2020-08-21 13:16:28,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:16:28,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:16:28,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:16:28,270 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:16:28,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:16:28,417 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:16:28,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:28 WrapperNode [2020-08-21 13:16:28,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:16:28,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:16:28,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:16:28,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:16:28,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:28" (1/1) ... [2020-08-21 13:16:28,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:28" (1/1) ... [2020-08-21 13:16:28,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:28" (1/1) ... [2020-08-21 13:16:28,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:28" (1/1) ... [2020-08-21 13:16:28,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:28" (1/1) ... [2020-08-21 13:16:28,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:28" (1/1) ... [2020-08-21 13:16:28,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:28" (1/1) ... [2020-08-21 13:16:28,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:16:28,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:16:28,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:16:28,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:16:28,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:28" (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 [2020-08-21 13:16:28,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:16:28,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:16:28,540 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-21 13:16:28,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-21 13:16:28,541 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:16:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:16:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-21 13:16:28,542 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-21 13:16:28,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:16:28,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 13:16:28,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:16:28,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:16:28,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 13:16:28,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:16:28,544 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-21 13:16:28,545 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:16:28,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:16:28,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-21 13:16:28,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:16:29,071 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:16:29,072 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-21 13:16:29,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:16:29 BoogieIcfgContainer [2020-08-21 13:16:29,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:16:29,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:16:29,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:16:29,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:16:29,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:16:27" (1/3) ... [2020-08-21 13:16:29,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e02091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:16:29, skipping insertion in model container [2020-08-21 13:16:29,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:28" (2/3) ... [2020-08-21 13:16:29,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e02091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:16:29, skipping insertion in model container [2020-08-21 13:16:29,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:16:29" (3/3) ... [2020-08-21 13:16:29,085 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-08-21 13:16:29,096 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:16:29,104 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:16:29,119 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:16:29,144 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:16:29,145 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:16:29,145 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:16:29,145 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:16:29,146 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:16:29,146 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:16:29,146 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:16:29,146 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:16:29,167 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-08-21 13:16:29,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 13:16:29,175 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:16:29,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:16:29,177 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:16:29,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:16:29,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1920116781, now seen corresponding path program 1 times [2020-08-21 13:16:29,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:16:29,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436779866] [2020-08-21 13:16:29,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:16:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:29,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:16:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:29,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 13:16:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:29,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:16:29,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436779866] [2020-08-21 13:16:29,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:16:29,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:16:29,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807914761] [2020-08-21 13:16:29,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:16:29,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:16:29,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:16:29,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:16:29,442 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2020-08-21 13:16:29,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:16:29,702 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2020-08-21 13:16:29,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 13:16:29,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-21 13:16:29,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:16:29,716 INFO L225 Difference]: With dead ends: 116 [2020-08-21 13:16:29,716 INFO L226 Difference]: Without dead ends: 56 [2020-08-21 13:16:29,720 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 [2020-08-21 13:16:29,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-08-21 13:16:29,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-08-21 13:16:29,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-21 13:16:29,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-08-21 13:16:29,773 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2020-08-21 13:16:29,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:16:29,773 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-08-21 13:16:29,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:16:29,774 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-08-21 13:16:29,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 13:16:29,775 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:16:29,775 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] [2020-08-21 13:16:29,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:16:29,776 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:16:29,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:16:29,777 INFO L82 PathProgramCache]: Analyzing trace with hash -2095475350, now seen corresponding path program 1 times [2020-08-21 13:16:29,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:16:29,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031454304] [2020-08-21 13:16:29,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:16:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 13:16:29,869 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 13:16:29,869 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 13:16:29,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:16:29,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:16:29 BoogieIcfgContainer [2020-08-21 13:16:29,922 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 13:16:29,927 INFO L168 Benchmark]: Toolchain (without parser) took 1924.09 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 101.6 MB in the beginning and 93.4 MB in the end (delta: 8.2 MB). Peak memory consumption was 70.0 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:29,928 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.0 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-08-21 13:16:29,931 INFO L168 Benchmark]: CACSL2BoogieTranslator took 416.98 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 101.2 MB in the beginning and 176.5 MB in the end (delta: -75.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:29,933 INFO L168 Benchmark]: Boogie Preprocessor took 55.73 ms. Allocated memory is still 200.8 MB. Free memory was 176.5 MB in the beginning and 174.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:29,934 INFO L168 Benchmark]: RCFGBuilder took 601.72 ms. Allocated memory is still 200.8 MB. Free memory was 174.6 MB in the beginning and 146.3 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:29,934 INFO L168 Benchmark]: TraceAbstraction took 844.47 ms. Allocated memory is still 200.8 MB. Free memory was 145.3 MB in the beginning and 93.4 MB in the end (delta: 51.9 MB). Peak memory consumption was 51.9 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:29,941 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.0 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 416.98 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 101.2 MB in the beginning and 176.5 MB in the end (delta: -75.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.73 ms. Allocated memory is still 200.8 MB. Free memory was 176.5 MB in the beginning and 174.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 601.72 ms. Allocated memory is still 200.8 MB. Free memory was 174.6 MB in the beginning and 146.3 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 844.47 ms. Allocated memory is still 200.8 MB. Free memory was 145.3 MB in the beginning and 93.4 MB in the end (delta: 51.9 MB). Peak memory consumption was 51.9 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: 0.2s, 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, 0.1s 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...