/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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_1072b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:54:07,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:54:07,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:54:07,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:54:07,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:54:07,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:54:07,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:54:07,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:54:07,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:54:07,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:54:07,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:54:07,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:54:07,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:54:07,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:54:07,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:54:07,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:54:07,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:54:07,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:54:07,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:54:07,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:54:07,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:54:07,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:54:07,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:54:07,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:54:07,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 14:54:07,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 14:54:07,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 14:54:07,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 14:54:07,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 14:54:07,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 14:54:07,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 14:54:07,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 14:54:07,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 14:54:07,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 14:54:07,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 14:54:07,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 14:54:07,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 14:54:07,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 14:54:07,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:54:07,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:54:07,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:54:07,817 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 [2020-09-24 14:54:07,852 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:54:07,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:54:07,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:54:07,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:54:07,855 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:54:07,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:54:07,855 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:54:07,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:54:07,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:54:07,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:54:07,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:54:07,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:54:07,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:54:07,858 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:54:07,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:54:07,859 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:54:07,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:54:07,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:54:07,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:54:07,860 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:54:07,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:54:07,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:54:07,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:54:07,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:54:07,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:54:07,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:54:07,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:54:07,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:54:07,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:54:07,862 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:54:08,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:54:08,422 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:54:08,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:54:08,428 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:54:08,428 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:54:08,430 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1072b.c [2020-09-24 14:54:08,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe80cdeeb/efd9ff5150e44fa293abd6de86c1d2ca/FLAGd9429b28e [2020-09-24 14:54:09,081 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:54:09,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1072b.c [2020-09-24 14:54:09,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe80cdeeb/efd9ff5150e44fa293abd6de86c1d2ca/FLAGd9429b28e [2020-09-24 14:54:09,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe80cdeeb/efd9ff5150e44fa293abd6de86c1d2ca [2020-09-24 14:54:09,411 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:54:09,418 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:54:09,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:54:09,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:54:09,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:54:09,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:54:09" (1/1) ... [2020-09-24 14:54:09,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d7302eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:09, skipping insertion in model container [2020-09-24 14:54:09,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:54:09" (1/1) ... [2020-09-24 14:54:09,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:54:09,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:54:09,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:54:09,735 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:54:09,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:54:09,794 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:54:09,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:09 WrapperNode [2020-09-24 14:54:09,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:54:09,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:54:09,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:54:09,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:54:09,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:09" (1/1) ... [2020-09-24 14:54:09,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:09" (1/1) ... [2020-09-24 14:54:09,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:09" (1/1) ... [2020-09-24 14:54:09,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:09" (1/1) ... [2020-09-24 14:54:09,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:09" (1/1) ... [2020-09-24 14:54:09,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:09" (1/1) ... [2020-09-24 14:54:09,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:09" (1/1) ... [2020-09-24 14:54:09,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:54:09,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:54:09,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:54:09,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:54:09,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:09" (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 [2020-09-24 14:54:10,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:54:10,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:54:10,023 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_float [2020-09-24 14:54:10,023 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-09-24 14:54:10,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:54:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:54:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_float [2020-09-24 14:54:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:54:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 14:54:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:54:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:54:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:54:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 14:54:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-09-24 14:54:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:54:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:54:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:54:10,427 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:54:10,428 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-24 14:54:10,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:54:10 BoogieIcfgContainer [2020-09-24 14:54:10,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:54:10,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:54:10,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:54:10,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:54:10,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:54:09" (1/3) ... [2020-09-24 14:54:10,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7203bf29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:54:10, skipping insertion in model container [2020-09-24 14:54:10,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:09" (2/3) ... [2020-09-24 14:54:10,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7203bf29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:54:10, skipping insertion in model container [2020-09-24 14:54:10,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:54:10" (3/3) ... [2020-09-24 14:54:10,444 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1072b.c [2020-09-24 14:54:10,456 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:54:10,466 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:54:10,496 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:54:10,533 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:54:10,533 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:54:10,533 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:54:10,533 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:54:10,533 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:54:10,534 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:54:10,534 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:54:10,534 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:54:10,559 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2020-09-24 14:54:10,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 14:54:10,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:10,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:54:10,571 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:10,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:10,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1694901136, now seen corresponding path program 1 times [2020-09-24 14:54:10,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:10,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868372281] [2020-09-24 14:54:10,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:10,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:54:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:10,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 14:54:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:10,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 14:54:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:10,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:54:10,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868372281] [2020-09-24 14:54:10,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:54:10,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:54:10,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052142540] [2020-09-24 14:54:10,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:54:10,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:54:10,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:54:10,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:54:10,894 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 4 states. [2020-09-24 14:54:11,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:54:11,167 INFO L93 Difference]: Finished difference Result 152 states and 175 transitions. [2020-09-24 14:54:11,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 14:54:11,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-09-24 14:54:11,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:54:11,182 INFO L225 Difference]: With dead ends: 152 [2020-09-24 14:54:11,183 INFO L226 Difference]: Without dead ends: 76 [2020-09-24 14:54:11,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:54:11,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-24 14:54:11,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-09-24 14:54:11,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-24 14:54:11,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2020-09-24 14:54:11,258 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 35 [2020-09-24 14:54:11,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:54:11,259 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2020-09-24 14:54:11,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:54:11,259 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2020-09-24 14:54:11,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 14:54:11,262 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:11,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:54:11,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:54:11,263 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:11,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:11,264 INFO L82 PathProgramCache]: Analyzing trace with hash -331067037, now seen corresponding path program 1 times [2020-09-24 14:54:11,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:11,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492226018] [2020-09-24 14:54:11,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 14:54:11,403 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 14:54:11,403 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 14:54:11,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:54:11,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:54:11 BoogieIcfgContainer [2020-09-24 14:54:11,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:54:11,448 INFO L168 Benchmark]: Toolchain (without parser) took 2033.04 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 102.6 MB in the beginning and 103.7 MB in the end (delta: -1.2 MB). Peak memory consumption was 57.0 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:11,451 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.2 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-24 14:54:11,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.55 ms. Allocated memory is still 145.2 MB. Free memory was 102.1 MB in the beginning and 91.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:11,454 INFO L168 Benchmark]: Boogie Preprocessor took 145.21 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 91.2 MB in the beginning and 180.8 MB in the end (delta: -89.6 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:11,455 INFO L168 Benchmark]: RCFGBuilder took 493.58 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 156.9 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:11,457 INFO L168 Benchmark]: TraceAbstraction took 1008.09 ms. Allocated memory is still 203.4 MB. Free memory was 156.0 MB in the beginning and 103.7 MB in the end (delta: 52.2 MB). Peak memory consumption was 52.2 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:11,468 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 145.2 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 374.55 ms. Allocated memory is still 145.2 MB. Free memory was 102.1 MB in the beginning and 91.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 145.21 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 91.2 MB in the beginning and 180.8 MB in the end (delta: -89.6 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 493.58 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 156.9 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1008.09 ms. Allocated memory is still 203.4 MB. Free memory was 156.0 MB in the beginning and 103.7 MB in the end (delta: 52.2 MB). Peak memory consumption was 52.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 66]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 61, overapproximation of bitwiseAnd at line 50. Possible FailurePath: [L61] float x = -1.0f / 0.0f; [L62] CALL, EXPR trunc_float(x) [L12] __int32_t signbit, w, exponent_less_127; [L14] ieee_float_shape_type gf_u; [L15] gf_u.value = (x) [L16] EXPR gf_u.word [L16] (w) = gf_u.word [L18] signbit = w & 0x80000000 [L19] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 [L20] COND FALSE !(exponent_less_127 < 23) [L36] COND FALSE !(exponent_less_127 == 255) [L39] return x; [L62] RET, EXPR trunc_float(x) [L62] float res = trunc_float(x); [L65] CALL, EXPR isinf_float(res) [L44] __int32_t ix; [L46] ieee_float_shape_type gf_u; [L47] gf_u.value = (x) [L48] EXPR gf_u.word [L48] (ix) = gf_u.word [L50] ix &= 0x7fffffff [L51] return ((ix) == 0x7f800000L); [L65] RET, EXPR isinf_float(res) [L65] COND TRUE !isinf_float(res) [L66] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 15 SDslu, 54 SDs, 0 SdLazy, 94 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred 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, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 2278 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...