/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 produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:18:45,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:18:45,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:18:45,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:18:45,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:18:45,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:18:45,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:18:45,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:18:45,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:18:45,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:18:45,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:18:45,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:18:45,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:18:45,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:18:45,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:18:45,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:18:45,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:18:45,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:18:45,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:18:45,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:18:45,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:18:45,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:18:45,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:18:45,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:18:45,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:18:45,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:18:45,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:18:45,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:18:45,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:18:45,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:18:45,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:18:45,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:18:45,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:18:45,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:18:45,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:18:45,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:18:45,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:18:45,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:18:45,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:18:45,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:18:45,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:18:45,831 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 [2020-09-21 11:18:45,877 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:18:45,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:18:45,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:18:45,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:18:45,880 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:18:45,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:18:45,881 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:18:45,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:18:45,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:18:45,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:18:45,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:18:45,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:18:45,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:18:45,884 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:18:45,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:18:45,884 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:18:45,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:18:45,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:18:45,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:18:45,885 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:18:45,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:18:45,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:18:45,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:18:45,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:18:45,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:18:45,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:18:45,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:18:45,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:18:45,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:18:45,887 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 -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:18:46,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:18:46,410 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:18:46,414 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:18:46,416 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:18:46,416 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:18:46,418 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-09-21 11:18:46,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/644ece25c/ce6a4d8c1a514f2b9b9aa5f9257c6b32/FLAG5653a908d [2020-09-21 11:18:47,103 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:18:47,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-09-21 11:18:47,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/644ece25c/ce6a4d8c1a514f2b9b9aa5f9257c6b32/FLAG5653a908d [2020-09-21 11:18:47,408 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/644ece25c/ce6a4d8c1a514f2b9b9aa5f9257c6b32 [2020-09-21 11:18:47,423 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:18:47,427 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:18:47,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:18:47,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:18:47,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:18:47,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:18:47" (1/1) ... [2020-09-21 11:18:47,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:47, skipping insertion in model container [2020-09-21 11:18:47,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:18:47" (1/1) ... [2020-09-21 11:18:47,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:18:47,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:18:47,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:18:47,818 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:18:47,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:18:47,982 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:18:47,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:47 WrapperNode [2020-09-21 11:18:47,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:18:47,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:18:47,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:18:47,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:18:48,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:47" (1/1) ... [2020-09-21 11:18:48,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:47" (1/1) ... [2020-09-21 11:18:48,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:47" (1/1) ... [2020-09-21 11:18:48,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:47" (1/1) ... [2020-09-21 11:18:48,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:47" (1/1) ... [2020-09-21 11:18:48,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:47" (1/1) ... [2020-09-21 11:18:48,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:47" (1/1) ... [2020-09-21 11:18:48,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:18:48,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:18:48,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:18:48,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:18:48,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:47" (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 [2020-09-21 11:18:48,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:18:48,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:18:48,144 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-21 11:18:48,144 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-09-21 11:18:48,144 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:18:48,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:18:48,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-21 11:18:48,145 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-21 11:18:48,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:18:48,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 11:18:48,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:18:48,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:18:48,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 11:18:48,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:18:48,146 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-09-21 11:18:48,146 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:18:48,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:18:48,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-21 11:18:48,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:18:48,746 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:18:48,746 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-21 11:18:48,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:18:48 BoogieIcfgContainer [2020-09-21 11:18:48,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:18:48,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:18:48,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:18:48,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:18:48,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:18:47" (1/3) ... [2020-09-21 11:18:48,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50452fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:18:48, skipping insertion in model container [2020-09-21 11:18:48,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:47" (2/3) ... [2020-09-21 11:18:48,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50452fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:18:48, skipping insertion in model container [2020-09-21 11:18:48,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:18:48" (3/3) ... [2020-09-21 11:18:48,762 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-09-21 11:18:48,776 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:18:48,790 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:18:48,809 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:18:48,835 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:18:48,835 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:18:48,835 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:18:48,835 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:18:48,835 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:18:48,835 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:18:48,835 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:18:48,836 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:18:48,859 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-09-21 11:18:48,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 11:18:48,868 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:48,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:18:48,870 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:48,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:48,876 INFO L82 PathProgramCache]: Analyzing trace with hash -759211570, now seen corresponding path program 1 times [2020-09-21 11:18:48,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:48,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711314272] [2020-09-21 11:18:48,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:49,046 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:49,046 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:49,047 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:49,047 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:49,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-21 11:18:49,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:49,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:18:49,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:49,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:49,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:18:49,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:49,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:49,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:18:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:49,154 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:49,155 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:49,155 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:49,156 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:49,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:49,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:49,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:18:49,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:49,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:49,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:49,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:49,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:49,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:18:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:49,229 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:49,229 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:49,229 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:49,230 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:49,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:18:49,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:49,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:49,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:49,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:49,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:18:49,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:49,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:49,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 11:18:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:49,240 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:49,241 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:49,241 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:49,241 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:49,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:18:49,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:49,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:49,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:49,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:49,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:18:49,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:49,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:49,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:18:49,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711314272] [2020-09-21 11:18:49,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:18:49,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:18:49,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257453531] [2020-09-21 11:18:49,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:18:49,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:18:49,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:18:49,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:18:49,285 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-09-21 11:18:49,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:18:49,630 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-09-21 11:18:49,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:18:49,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-21 11:18:49,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:18:49,646 INFO L225 Difference]: With dead ends: 138 [2020-09-21 11:18:49,647 INFO L226 Difference]: Without dead ends: 68 [2020-09-21 11:18:49,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:18:49,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-21 11:18:49,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-21 11:18:49,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-21 11:18:49,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-09-21 11:18:49,712 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-09-21 11:18:49,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:18:49,713 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-09-21 11:18:49,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:18:49,713 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-09-21 11:18:49,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 11:18:49,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:49,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:18:49,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:18:49,716 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:49,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:49,716 INFO L82 PathProgramCache]: Analyzing trace with hash -775583586, now seen corresponding path program 1 times [2020-09-21 11:18:49,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:49,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649686947] [2020-09-21 11:18:49,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:18:49,880 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:18:49,880 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:18:49,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:18:49,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:18:49 BoogieIcfgContainer [2020-09-21 11:18:49,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:18:49,916 INFO L168 Benchmark]: Toolchain (without parser) took 2490.48 ms. Allocated memory was 110.1 MB in the beginning and 187.2 MB in the end (delta: 77.1 MB). Free memory was 74.9 MB in the beginning and 117.3 MB in the end (delta: -42.4 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:49,918 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 110.1 MB. Free memory was 92.8 MB in the beginning and 92.7 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. [2020-09-21 11:18:49,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 552.39 ms. Allocated memory was 110.1 MB in the beginning and 168.8 MB in the end (delta: 58.7 MB). Free memory was 74.3 MB in the beginning and 151.8 MB in the end (delta: -77.4 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:49,920 INFO L168 Benchmark]: Boogie Preprocessor took 76.55 ms. Allocated memory is still 168.8 MB. Free memory was 151.8 MB in the beginning and 148.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:49,920 INFO L168 Benchmark]: RCFGBuilder took 691.09 ms. Allocated memory is still 168.8 MB. Free memory was 148.7 MB in the beginning and 113.6 MB in the end (delta: 35.1 MB). Peak memory consumption was 35.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:49,921 INFO L168 Benchmark]: TraceAbstraction took 1159.28 ms. Allocated memory was 168.8 MB in the beginning and 187.2 MB in the end (delta: 18.4 MB). Free memory was 113.1 MB in the beginning and 117.3 MB in the end (delta: -4.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:49,926 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 110.1 MB. Free memory was 92.8 MB in the beginning and 92.7 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 552.39 ms. Allocated memory was 110.1 MB in the beginning and 168.8 MB in the end (delta: 58.7 MB). Free memory was 74.3 MB in the beginning and 151.8 MB in the end (delta: -77.4 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 76.55 ms. Allocated memory is still 168.8 MB. Free memory was 151.8 MB in the beginning and 148.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 691.09 ms. Allocated memory is still 168.8 MB. Free memory was 148.7 MB in the beginning and 113.6 MB in the end (delta: 35.1 MB). Peak memory consumption was 35.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1159.28 ms. Allocated memory was 168.8 MB in the beginning and 187.2 MB in the end (delta: 18.4 MB). Free memory was 113.1 MB in the beginning and 117.3 MB in the end (delta: -4.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) [L161] __int32_t hx; [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L180] RET isfinite_double(x) [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); [L182] RET, EXPR fmod_double(x, y) [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x [L186] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 0.2s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 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...