/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:28:51,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:28:51,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:28:51,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:28:51,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:28:51,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:28:51,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:28:51,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:28:51,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:28:51,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:28:51,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:28:51,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:28:51,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:28:51,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:28:51,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:28:51,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:28:51,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:28:51,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:28:51,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:28:51,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:28:51,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:28:51,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:28:51,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:28:51,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:28:51,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:28:51,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:28:51,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:28:51,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:28:51,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:28:51,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:28:51,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:28:51,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:28:51,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:28:51,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:28:51,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:28:51,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:28:51,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:28:51,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:28:51,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:28:51,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:28:51,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:28:51,792 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 23:28:51,827 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:28:51,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:28:51,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:28:51,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:28:51,829 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:28:51,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:28:51,830 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:28:51,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:28:51,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:28:51,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:28:51,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:28:51,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:28:51,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:28:51,832 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:28:51,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:28:51,833 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:28:51,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:28:51,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:28:51,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:28:51,834 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:28:51,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:28:51,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:28:51,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:28:51,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:28:51,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:28:51,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:28:51,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:28:51,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:28:51,836 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:28:51,836 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=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:28:52,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:28:52,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:28:52,151 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:28:52,152 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:28:52,153 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:28:52,153 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-18 23:28:52,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f86ec517/612e7e105b67431abb59539cffd12245/FLAG3051de979 [2020-08-18 23:28:52,679 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:28:52,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-18 23:28:52,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f86ec517/612e7e105b67431abb59539cffd12245/FLAG3051de979 [2020-08-18 23:28:53,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f86ec517/612e7e105b67431abb59539cffd12245 [2020-08-18 23:28:53,038 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:28:53,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:28:53,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:28:53,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:28:53,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:28:53,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:28:53" (1/1) ... [2020-08-18 23:28:53,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41357e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:53, skipping insertion in model container [2020-08-18 23:28:53,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:28:53" (1/1) ... [2020-08-18 23:28:53,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:28:53,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:28:53,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:28:53,465 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:28:53,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:28:53,642 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:28:53,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:53 WrapperNode [2020-08-18 23:28:53,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:28:53,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:28:53,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:28:53,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:28:53,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:53" (1/1) ... [2020-08-18 23:28:53,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:53" (1/1) ... [2020-08-18 23:28:53,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:53" (1/1) ... [2020-08-18 23:28:53,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:53" (1/1) ... [2020-08-18 23:28:53,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:53" (1/1) ... [2020-08-18 23:28:53,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:53" (1/1) ... [2020-08-18 23:28:53,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:53" (1/1) ... [2020-08-18 23:28:53,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:28:53,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:28:53,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:28:53,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:28:53,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:53" (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 23:28:53,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:28:53,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:28:53,783 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 23:28:53,783 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-18 23:28:53,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-18 23:28:53,783 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:28:53,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:28:53,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-18 23:28:53,784 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 23:28:53,784 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-18 23:28:53,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 23:28:53,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 23:28:53,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 23:28:53,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 23:28:53,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 23:28:53,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 23:28:53,785 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-18 23:28:53,785 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:28:53,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:28:53,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-18 23:28:53,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:28:54,404 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:28:54,404 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-18 23:28:54,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:28:54 BoogieIcfgContainer [2020-08-18 23:28:54,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:28:54,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:28:54,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:28:54,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:28:54,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:28:53" (1/3) ... [2020-08-18 23:28:54,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e1e918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:28:54, skipping insertion in model container [2020-08-18 23:28:54,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:53" (2/3) ... [2020-08-18 23:28:54,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e1e918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:28:54, skipping insertion in model container [2020-08-18 23:28:54,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:28:54" (3/3) ... [2020-08-18 23:28:54,419 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-08-18 23:28:54,432 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:28:54,443 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:28:54,457 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:28:54,483 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:28:54,483 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:28:54,483 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:28:54,483 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:28:54,484 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:28:54,484 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:28:54,484 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:28:54,484 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:28:54,503 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-18 23:28:54,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 23:28:54,511 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:28:54,512 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 23:28:54,513 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:28:54,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:28:54,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-08-18 23:28:54,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:28:54,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691914573] [2020-08-18 23:28:54,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:28:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:28:54,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:28:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:28:54,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 23:28:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:28:54,783 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 23:28:54,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691914573] [2020-08-18 23:28:54,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:28:54,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:28:54,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998739604] [2020-08-18 23:28:54,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:28:54,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:28:54,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:28:54,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:28:54,809 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-18 23:28:55,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:28:55,177 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-08-18 23:28:55,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:28:55,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-18 23:28:55,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:28:55,190 INFO L225 Difference]: With dead ends: 142 [2020-08-18 23:28:55,190 INFO L226 Difference]: Without dead ends: 69 [2020-08-18 23:28:55,195 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 23:28:55,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-18 23:28:55,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-18 23:28:55,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-18 23:28:55,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-08-18 23:28:55,240 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-08-18 23:28:55,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:28:55,241 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-08-18 23:28:55,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:28:55,241 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-08-18 23:28:55,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 23:28:55,243 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:28:55,243 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 23:28:55,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:28:55,244 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:28:55,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:28:55,244 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-08-18 23:28:55,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:28:55,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291657230] [2020-08-18 23:28:55,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:28:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 23:28:55,329 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 23:28:55,330 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 23:28:55,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:28:55,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:28:55 BoogieIcfgContainer [2020-08-18 23:28:55,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 23:28:55,358 INFO L168 Benchmark]: Toolchain (without parser) took 2316.94 ms. Allocated memory was 140.0 MB in the beginning and 236.5 MB in the end (delta: 96.5 MB). Free memory was 102.8 MB in the beginning and 195.4 MB in the end (delta: -92.6 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-18 23:28:55,359 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 23:28:55,360 INFO L168 Benchmark]: CACSL2BoogieTranslator took 600.04 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 178.1 MB in the end (delta: -75.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-08-18 23:28:55,361 INFO L168 Benchmark]: Boogie Preprocessor took 61.95 ms. Allocated memory is still 202.9 MB. Free memory was 178.1 MB in the beginning and 175.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-08-18 23:28:55,361 INFO L168 Benchmark]: RCFGBuilder took 703.76 ms. Allocated memory is still 202.9 MB. Free memory was 175.1 MB in the beginning and 139.0 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. [2020-08-18 23:28:55,362 INFO L168 Benchmark]: TraceAbstraction took 943.71 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 138.3 MB in the beginning and 195.4 MB in the end (delta: -57.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 23:28:55,367 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 600.04 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 178.1 MB in the end (delta: -75.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.95 ms. Allocated memory is still 202.9 MB. Free memory was 178.1 MB in the beginning and 175.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 703.76 ms. Allocated memory is still 202.9 MB. Free memory was 175.1 MB in the beginning and 139.0 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 943.71 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 138.3 MB in the beginning and 195.4 MB in the end (delta: -57.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L187] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L187] RET, EXPR fmod_double(x, y) [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 14 SDslu, 85 SDs, 0 SdLazy, 104 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=74occurred 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...