/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_1071.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:33:06,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:33:06,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:33:06,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:33:06,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:33:06,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:33:06,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:33:06,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:33:06,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:33:06,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:33:06,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:33:06,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:33:06,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:33:06,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:33:06,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:33:06,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:33:06,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:33:06,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:33:06,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:33:06,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:33:06,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:33:06,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:33:06,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:33:06,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:33:06,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:33:06,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:33:06,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:33:06,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:33:06,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:33:06,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-22 00:33:06,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:33:06,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:33:06,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:33:06,453 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 00:33:06,493 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:33:06,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:33:06,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:33:06,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:33:06,496 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:33:06,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:33:06,497 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:33:06,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:33:06,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:33:06,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:33:06,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:33:06,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:33:06,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:33:06,499 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:33:06,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:33:06,500 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:33:06,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:33:06,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:33:06,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:33:06,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:33:06,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:33:06,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:33:06,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:33:06,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:33:06,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:33:06,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:33:06,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:33:06,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:33:06,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:33:06,503 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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:33:06,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:33:06,807 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:33:06,814 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:33:06,815 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:33:06,815 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:33:06,816 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1071.c [2020-08-22 00:33:06,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6387ec602/4e2bbe77b1df4c3197110aeb7f3c6330/FLAGc29a1ee19 [2020-08-22 00:33:07,354 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:33:07,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1071.c [2020-08-22 00:33:07,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6387ec602/4e2bbe77b1df4c3197110aeb7f3c6330/FLAGc29a1ee19 [2020-08-22 00:33:07,702 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6387ec602/4e2bbe77b1df4c3197110aeb7f3c6330 [2020-08-22 00:33:07,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:33:07,714 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:33:07,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:33:07,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:33:07,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:33:07,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:33:07" (1/1) ... [2020-08-22 00:33:07,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fe0b327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:07, skipping insertion in model container [2020-08-22 00:33:07,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:33:07" (1/1) ... [2020-08-22 00:33:07,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:33:07,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:33:07,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:33:07,951 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:33:07,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:33:08,007 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:33:08,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:08 WrapperNode [2020-08-22 00:33:08,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:33:08,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:33:08,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:33:08,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:33:08,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:08" (1/1) ... [2020-08-22 00:33:08,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:08" (1/1) ... [2020-08-22 00:33:08,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:08" (1/1) ... [2020-08-22 00:33:08,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:08" (1/1) ... [2020-08-22 00:33:08,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:08" (1/1) ... [2020-08-22 00:33:08,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:08" (1/1) ... [2020-08-22 00:33:08,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:08" (1/1) ... [2020-08-22 00:33:08,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:33:08,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:33:08,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:33:08,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:33:08,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:08" (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 00:33:08,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:33:08,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:33:08,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 00:33:08,204 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-08-22 00:33:08,204 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:33:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:33:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 00:33:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-08-22 00:33:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:33:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 00:33:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:33:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:33:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:33:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 00:33:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:33:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:33:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:33:08,618 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:33:08,618 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-08-22 00:33:08,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:33:08 BoogieIcfgContainer [2020-08-22 00:33:08,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:33:08,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:33:08,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:33:08,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:33:08,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:33:07" (1/3) ... [2020-08-22 00:33:08,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b3b06f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:33:08, skipping insertion in model container [2020-08-22 00:33:08,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:08" (2/3) ... [2020-08-22 00:33:08,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b3b06f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:33:08, skipping insertion in model container [2020-08-22 00:33:08,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:33:08" (3/3) ... [2020-08-22 00:33:08,631 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1071.c [2020-08-22 00:33:08,640 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:33:08,647 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:33:08,660 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:33:08,682 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:33:08,682 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:33:08,682 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:33:08,682 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:33:08,683 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:33:08,683 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:33:08,683 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:33:08,683 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:33:08,703 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-22 00:33:08,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 00:33:08,709 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:33:08,710 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] [2020-08-22 00:33:08,711 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:33:08,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:33:08,717 INFO L82 PathProgramCache]: Analyzing trace with hash -452059413, now seen corresponding path program 1 times [2020-08-22 00:33:08,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:33:08,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399582433] [2020-08-22 00:33:08,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:33:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:33:08,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:33:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:33:08,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:33:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:33:08,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:33:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:33:08,952 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 00:33:08,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399582433] [2020-08-22 00:33:08,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:33:08,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:33:08,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869236540] [2020-08-22 00:33:08,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:33:08,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:33:08,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:33:08,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:33:08,978 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 4 states. [2020-08-22 00:33:09,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:33:09,192 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2020-08-22 00:33:09,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 00:33:09,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-22 00:33:09,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:33:09,207 INFO L225 Difference]: With dead ends: 66 [2020-08-22 00:33:09,208 INFO L226 Difference]: Without dead ends: 33 [2020-08-22 00:33:09,212 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 [2020-08-22 00:33:09,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-22 00:33:09,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-22 00:33:09,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-22 00:33:09,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-08-22 00:33:09,260 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 23 [2020-08-22 00:33:09,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:33:09,261 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-08-22 00:33:09,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:33:09,262 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-08-22 00:33:09,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 00:33:09,263 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:33:09,263 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] [2020-08-22 00:33:09,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:33:09,264 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:33:09,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:33:09,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1570049965, now seen corresponding path program 1 times [2020-08-22 00:33:09,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:33:09,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356998851] [2020-08-22 00:33:09,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:33:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 00:33:09,345 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 00:33:09,346 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 00:33:09,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:33:09,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 12:33:09 BoogieIcfgContainer [2020-08-22 00:33:09,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 00:33:09,403 INFO L168 Benchmark]: Toolchain (without parser) took 1677.81 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.4 MB in the beginning and 116.9 MB in the end (delta: -13.5 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. [2020-08-22 00:33:09,407 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-22 00:33:09,408 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.02 ms. Allocated memory is still 140.5 MB. Free memory was 103.4 MB in the beginning and 92.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2020-08-22 00:33:09,409 INFO L168 Benchmark]: Boogie Preprocessor took 130.46 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.0 MB in the beginning and 180.7 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-22 00:33:09,411 INFO L168 Benchmark]: RCFGBuilder took 482.72 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 158.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-08-22 00:33:09,412 INFO L168 Benchmark]: TraceAbstraction took 766.30 ms. Allocated memory is still 203.4 MB. Free memory was 158.7 MB in the beginning and 116.9 MB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. [2020-08-22 00:33:09,419 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 293.02 ms. Allocated memory is still 140.5 MB. Free memory was 103.4 MB in the beginning and 92.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.46 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.0 MB in the beginning and 180.7 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 482.72 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 158.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 766.30 ms. Allocated memory is still 203.4 MB. Free memory was 158.7 MB in the beginning and 116.9 MB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 74]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L68] double x = 0.0 / 0.0; [L70] CALL, EXPR trunc_double(x) [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L30] COND FALSE !(exponent_less_1023 < 20) [L47] COND TRUE exponent_less_1023 > 51 [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; [L70] RET, EXPR trunc_double(x) [L70] double res = trunc_double(x); [L73] CALL, EXPR isnan_double(res) [L15] return x != x; [L73] RET, EXPR isnan_double(res) [L73] COND TRUE !isnan_double(res) [L74] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 29 SDslu, 5 SDs, 0 SdLazy, 39 SolverSat, 11 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=37occurred 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, 946 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...