/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_1091.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:18:41,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:18:41,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:18:41,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:18:41,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:18:41,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:18:41,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:18:41,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:18:41,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:18:41,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:18:41,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:18:41,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:18:41,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:18:41,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:18:41,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:18:41,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:18:41,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:18:41,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:18:41,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:18:41,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:18:41,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:18:41,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:18:41,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:18:41,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:18:41,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:18:41,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:18:41,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:18:41,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:18:41,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:18:41,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:18:41,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:18:41,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:18:41,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:18:41,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:18:41,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:18:41,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:18:41,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:18:41,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:18:41,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:18:41,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:18:41,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:18:41,796 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 11:18:41,849 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:18:41,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:18:41,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:18:41,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:18:41,852 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:18:41,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:18:41,853 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:18:41,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:18:41,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:18:41,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:18:41,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:18:41,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:18:41,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:18:41,856 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:18:41,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:18:41,856 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:18:41,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:18:41,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:18:41,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:18:41,857 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:18:41,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:18:41,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:18:41,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:18:41,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:18:41,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:18:41,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:18:41,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:18:41,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:18:41,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:18:41,859 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 11:18:42,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:18:42,363 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:18:42,367 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:18:42,369 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:18:42,370 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:18:42,371 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-09-21 11:18:42,469 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f2d619bd/6730896116d7443fa72b786e7d00d60f/FLAGf264a6439 [2020-09-21 11:18:43,030 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:18:43,031 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-09-21 11:18:43,044 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f2d619bd/6730896116d7443fa72b786e7d00d60f/FLAGf264a6439 [2020-09-21 11:18:43,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f2d619bd/6730896116d7443fa72b786e7d00d60f [2020-09-21 11:18:43,358 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:18:43,367 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:18:43,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:18:43,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:18:43,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:18:43,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:18:43" (1/1) ... [2020-09-21 11:18:43,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@779392b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:43, skipping insertion in model container [2020-09-21 11:18:43,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:18:43" (1/1) ... [2020-09-21 11:18:43,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:18:43,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:18:43,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:18:43,690 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:18:43,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:18:43,857 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:18:43,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:43 WrapperNode [2020-09-21 11:18:43,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:18:43,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:18:43,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:18:43,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:18:43,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:43" (1/1) ... [2020-09-21 11:18:43,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:43" (1/1) ... [2020-09-21 11:18:43,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:43" (1/1) ... [2020-09-21 11:18:43,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:43" (1/1) ... [2020-09-21 11:18:43,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:43" (1/1) ... [2020-09-21 11:18:43,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:43" (1/1) ... [2020-09-21 11:18:43,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:43" (1/1) ... [2020-09-21 11:18:43,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:18:43,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:18:43,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:18:43,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:18:43,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:43" (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 11:18:43,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:18:43,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:18:43,989 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-21 11:18:43,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-09-21 11:18:43,989 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:18:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:18:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-21 11:18:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-09-21 11:18:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:18:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 11:18:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:18:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:18:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:18:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 11:18:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:18:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:18:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:18:44,416 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:18:44,417 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-21 11:18:44,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:18:44 BoogieIcfgContainer [2020-09-21 11:18:44,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:18:44,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:18:44,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:18:44,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:18:44,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:18:43" (1/3) ... [2020-09-21 11:18:44,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ae7d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:18:44, skipping insertion in model container [2020-09-21 11:18:44,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:43" (2/3) ... [2020-09-21 11:18:44,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ae7d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:18:44, skipping insertion in model container [2020-09-21 11:18:44,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:18:44" (3/3) ... [2020-09-21 11:18:44,432 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-09-21 11:18:44,443 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:18:44,453 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:18:44,476 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:18:44,505 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:18:44,506 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:18:44,506 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:18:44,506 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:18:44,506 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:18:44,506 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:18:44,506 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:18:44,506 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:18:44,527 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-09-21 11:18:44,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 11:18:44,535 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:44,536 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] [2020-09-21 11:18:44,536 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:44,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:44,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2020-09-21 11:18:44,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:44,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758006331] [2020-09-21 11:18:44,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:44,704 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:44,704 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:44,705 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:44,705 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:44,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:18:44,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:44,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:18:44,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:18:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:44,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:44,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:18:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:44,791 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:44,791 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:44,792 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:44,792 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:44,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:44,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:44,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:18:44,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:44,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:44,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:44,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:44,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:44,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:18:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:44,834 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:44,835 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:44,835 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:44,835 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:44,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 11:18:44,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:44,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:18:44,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:44,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:44,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:18:44,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:44,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:44,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:18:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:44,852 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:44,853 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:44,853 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:44,853 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:44,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:44,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:44,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:44,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:44,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:44,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:18:44,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:44,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:44,866 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 11:18:44,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758006331] [2020-09-21 11:18:44,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:18:44,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:18:44,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108439702] [2020-09-21 11:18:44,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:18:44,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:18:44,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:18:44,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:18:44,900 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-09-21 11:18:45,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:18:45,154 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-09-21 11:18:45,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:18:45,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-09-21 11:18:45,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:18:45,173 INFO L225 Difference]: With dead ends: 86 [2020-09-21 11:18:45,173 INFO L226 Difference]: Without dead ends: 43 [2020-09-21 11:18:45,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:18:45,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-21 11:18:45,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-21 11:18:45,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-21 11:18:45,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-09-21 11:18:45,232 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-09-21 11:18:45,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:18:45,233 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-09-21 11:18:45,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:18:45,233 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-09-21 11:18:45,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 11:18:45,235 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:45,235 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] [2020-09-21 11:18:45,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:18:45,236 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:45,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:45,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2020-09-21 11:18:45,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:45,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613661090] [2020-09-21 11:18:45,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:18:45,300 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:18:45,301 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:18:45,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:18:45,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:18:45 BoogieIcfgContainer [2020-09-21 11:18:45,329 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:18:45,333 INFO L168 Benchmark]: Toolchain (without parser) took 1970.76 ms. Allocated memory was 148.9 MB in the beginning and 205.0 MB in the end (delta: 56.1 MB). Free memory was 103.8 MB in the beginning and 103.5 MB in the end (delta: 273.9 kB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:45,333 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 148.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:18:45,335 INFO L168 Benchmark]: CACSL2BoogieTranslator took 488.69 ms. Allocated memory was 148.9 MB in the beginning and 205.0 MB in the end (delta: 56.1 MB). Free memory was 103.1 MB in the beginning and 183.3 MB in the end (delta: -80.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:45,336 INFO L168 Benchmark]: Boogie Preprocessor took 53.77 ms. Allocated memory is still 205.0 MB. Free memory was 183.3 MB in the beginning and 181.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:45,337 INFO L168 Benchmark]: RCFGBuilder took 509.41 ms. Allocated memory is still 205.0 MB. Free memory was 181.0 MB in the beginning and 158.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:45,338 INFO L168 Benchmark]: TraceAbstraction took 904.83 ms. Allocated memory is still 205.0 MB. Free memory was 158.2 MB in the beginning and 103.5 MB in the end (delta: 54.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:45,342 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 148.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 488.69 ms. Allocated memory was 148.9 MB in the beginning and 205.0 MB in the end (delta: 56.1 MB). Free memory was 103.1 MB in the beginning and 183.3 MB in the end (delta: -80.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.77 ms. Allocated memory is still 205.0 MB. Free memory was 183.3 MB in the beginning and 181.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 509.41 ms. Allocated memory is still 205.0 MB. Free memory was 181.0 MB in the beginning and 158.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 904.83 ms. Allocated memory is still 205.0 MB. Free memory was 158.2 MB in the beginning and 103.5 MB in the end (delta: 54.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 95]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 41, overapproximation of bitwiseOr at line 42, overapproximation of someBinaryArithmeticDOUBLEoperation at line 90, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L90] double x = 0.0 / 0.0; [L91] CALL, EXPR ceil_double(x) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; [L91] RET, EXPR ceil_double(x) [L91] double res = ceil_double(x); [L94] CALL, EXPR isnan_double(res) [L15] return x != x; [L94] RET, EXPR isnan_double(res) [L94] COND TRUE !isnan_double(res) [L95] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 52 SDslu, 5 SDs, 0 SdLazy, 58 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 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...