/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:59:52,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:59:52,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:59:52,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:59:52,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:59:52,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:59:52,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:59:52,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:59:52,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:59:52,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:59:52,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:59:52,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:59:52,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:59:52,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:59:52,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:59:52,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:59:52,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:59:52,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:59:52,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:59:52,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:59:52,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:59:52,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:59:52,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:59:52,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:59:52,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:59:52,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:59:52,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:59:52,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:59:52,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:59:52,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:59:52,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:59:52,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:59:52,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:59:52,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:59:52,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:59:52,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:59:52,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:59:52,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:59:52,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:59:52,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:59:52,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:59:52,686 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 02:59:52,715 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:59:52,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:59:52,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:59:52,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:59:52,717 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:59:52,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:59:52,718 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:59:52,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:59:52,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:59:52,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:59:52,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:59:52,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:59:52,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:59:52,720 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:59:52,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:59:52,720 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:59:52,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:59:52,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:59:52,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:59:52,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:59:52,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:59:52,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:59:52,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:59:52,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:59:52,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:59:52,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:59:52,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:59:52,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:59:52,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:59:52,724 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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-08-22 02:59:53,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:59:53,029 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:59:53,035 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:59:53,037 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:59:53,038 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:59:53,039 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-22 02:59:53,117 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21b30806d/87f908d9fee54c2f8977c19482835760/FLAG6e4528e9d [2020-08-22 02:59:53,624 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:59:53,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-22 02:59:53,636 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21b30806d/87f908d9fee54c2f8977c19482835760/FLAG6e4528e9d [2020-08-22 02:59:53,934 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21b30806d/87f908d9fee54c2f8977c19482835760 [2020-08-22 02:59:53,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:59:53,945 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:59:53,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:59:53,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:59:53,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:59:53,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:59:53" (1/1) ... [2020-08-22 02:59:53,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@202a6ca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:53, skipping insertion in model container [2020-08-22 02:59:53,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:59:53" (1/1) ... [2020-08-22 02:59:53,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:59:53,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:59:54,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:59:54,212 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:59:54,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:59:54,366 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:59:54,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:54 WrapperNode [2020-08-22 02:59:54,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:59:54,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:59:54,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:59:54,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:59:54,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:54" (1/1) ... [2020-08-22 02:59:54,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:54" (1/1) ... [2020-08-22 02:59:54,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:54" (1/1) ... [2020-08-22 02:59:54,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:54" (1/1) ... [2020-08-22 02:59:54,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:54" (1/1) ... [2020-08-22 02:59:54,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:54" (1/1) ... [2020-08-22 02:59:54,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:54" (1/1) ... [2020-08-22 02:59:54,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:59:54,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:59:54,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:59:54,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:59:54,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:54" (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 [2020-08-22 02:59:54,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:59:54,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:59:54,494 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-22 02:59:54,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-08-22 02:59:54,494 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:59:54,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:59:54,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-22 02:59:54,495 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-22 02:59:54,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:59:54,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 02:59:54,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:59:54,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:59:54,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 02:59:54,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:59:54,496 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-08-22 02:59:54,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:59:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:59:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-22 02:59:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:59:55,000 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:59:55,001 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-22 02:59:55,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:59:55 BoogieIcfgContainer [2020-08-22 02:59:55,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:59:55,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:59:55,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:59:55,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:59:55,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:59:53" (1/3) ... [2020-08-22 02:59:55,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f345f77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:59:55, skipping insertion in model container [2020-08-22 02:59:55,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:54" (2/3) ... [2020-08-22 02:59:55,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f345f77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:59:55, skipping insertion in model container [2020-08-22 02:59:55,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:59:55" (3/3) ... [2020-08-22 02:59:55,013 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-08-22 02:59:55,024 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:59:55,031 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:59:55,044 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:59:55,071 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:59:55,072 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:59:55,072 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:59:55,072 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:59:55,072 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:59:55,072 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:59:55,072 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:59:55,073 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:59:55,090 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-08-22 02:59:55,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 02:59:55,096 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:59:55,097 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] [2020-08-22 02:59:55,097 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:59:55,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:59:55,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-08-22 02:59:55,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:59:55,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562543622] [2020-08-22 02:59:55,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:59:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:59:55,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:59:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:59:55,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:59:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:59:55,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:59:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:59:55,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:59:55,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562543622] [2020-08-22 02:59:55,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:59:55,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:59:55,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652113857] [2020-08-22 02:59:55,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:59:55,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:59:55,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:59:55,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:59:55,442 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-08-22 02:59:55,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:59:55,724 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-08-22 02:59:55,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:59:55,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-22 02:59:55,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:59:55,737 INFO L225 Difference]: With dead ends: 112 [2020-08-22 02:59:55,737 INFO L226 Difference]: Without dead ends: 55 [2020-08-22 02:59:55,741 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 [2020-08-22 02:59:55,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-22 02:59:55,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-08-22 02:59:55,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-22 02:59:55,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-08-22 02:59:55,792 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-08-22 02:59:55,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:59:55,792 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-08-22 02:59:55,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:59:55,793 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-08-22 02:59:55,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 02:59:55,794 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:59:55,794 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] [2020-08-22 02:59:55,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:59:55,795 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:59:55,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:59:55,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-08-22 02:59:55,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:59:55,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693186971] [2020-08-22 02:59:55,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:59:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:59:55,948 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:59:55,951 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:59:55,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:59:55,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:59:55 BoogieIcfgContainer [2020-08-22 02:59:55,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:59:56,002 INFO L168 Benchmark]: Toolchain (without parser) took 2053.14 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 104.3 MB in the beginning and 96.3 MB in the end (delta: 8.1 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. [2020-08-22 02:59:56,003 INFO L168 Benchmark]: CDTParser took 0.80 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-22 02:59:56,006 INFO L168 Benchmark]: CACSL2BoogieTranslator took 420.58 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.9 MB in the beginning and 181.0 MB in the end (delta: -77.1 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-08-22 02:59:56,006 INFO L168 Benchmark]: Boogie Preprocessor took 68.38 ms. Allocated memory is still 204.5 MB. Free memory was 181.0 MB in the beginning and 178.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-22 02:59:56,008 INFO L168 Benchmark]: RCFGBuilder took 568.93 ms. Allocated memory is still 204.5 MB. Free memory was 178.2 MB in the beginning and 150.4 MB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2020-08-22 02:59:56,009 INFO L168 Benchmark]: TraceAbstraction took 990.08 ms. Allocated memory is still 204.5 MB. Free memory was 150.4 MB in the beginning and 96.3 MB in the end (delta: 54.1 MB). Peak memory consumption was 54.1 MB. Max. memory is 7.1 GB. [2020-08-22 02:59:56,014 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 420.58 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.9 MB in the beginning and 181.0 MB in the end (delta: -77.1 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.38 ms. Allocated memory is still 204.5 MB. Free memory was 181.0 MB in the beginning and 178.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 568.93 ms. Allocated memory is still 204.5 MB. Free memory was 178.2 MB in the beginning and 150.4 MB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 990.08 ms. Allocated memory is still 204.5 MB. Free memory was 150.4 MB in the beginning and 96.3 MB in the end (delta: 54.1 MB). Peak memory consumption was 54.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; [L129] CALL isfinite_float(x) [L109] __int32_t ix; [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (ix) = gf_u.word [L115] ix &= 0x7fffffff [L116] return (((ix) < 0x7f800000L)); [L129] RET isfinite_float(x) [L129] COND TRUE isfinite_float(x) [L131] CALL, EXPR fmod_float(x, y) [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); [L131] RET, EXPR fmod_float(x, y) [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 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: 73 SDtfs, 6 SDslu, 63 SDs, 0 SdLazy, 78 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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, 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...