/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:16:47,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:16:47,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:16:47,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:16:47,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:16:47,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:16:47,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:16:47,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:16:47,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:16:47,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:16:47,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:16:47,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:16:47,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:16:47,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:16:47,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:16:47,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:16:47,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:16:47,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:16:47,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:16:47,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:16:47,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:16:47,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:16:47,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:16:47,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:16:47,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:16:47,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:16:47,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:16:47,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:16:47,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:16:47,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-21 10:16:47,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:16:47,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:16:47,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:16:47,886 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 10:16:47,928 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:16:47,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:16:47,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:16:47,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:16:47,931 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:16:47,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:16:47,931 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:16:47,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:16:47,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:16:47,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:16:47,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:16:47,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:16:47,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:16:47,934 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:16:47,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:16:47,934 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:16:47,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:16:47,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:16:47,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:16:47,935 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:16:47,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:16:47,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:16:47,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:16:47,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:16:47,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:16:47,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:16:47,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:16:47,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:16:47,937 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:16:47,937 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 -> false [2020-09-21 10:16:48,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:16:48,415 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:16:48,421 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:16:48,423 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:16:48,423 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:16:48,425 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-09-21 10:16:48,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f32c896e8/152474f4195f42cb8aaa7e23197ccf2f/FLAG6510c8110 [2020-09-21 10:16:49,086 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:16:49,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-09-21 10:16:49,098 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f32c896e8/152474f4195f42cb8aaa7e23197ccf2f/FLAG6510c8110 [2020-09-21 10:16:49,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f32c896e8/152474f4195f42cb8aaa7e23197ccf2f [2020-09-21 10:16:49,417 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:16:49,421 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:16:49,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:16:49,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:16:49,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:16:49,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:16:49" (1/1) ... [2020-09-21 10:16:49,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c77fbdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:49, skipping insertion in model container [2020-09-21 10:16:49,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:16:49" (1/1) ... [2020-09-21 10:16:49,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:16:49,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:16:49,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:16:49,745 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:16:49,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:16:49,801 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:16:49,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:49 WrapperNode [2020-09-21 10:16:49,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:16:49,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:16:49,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:16:49,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:16:49,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:49" (1/1) ... [2020-09-21 10:16:49,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:49" (1/1) ... [2020-09-21 10:16:49,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:49" (1/1) ... [2020-09-21 10:16:49,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:49" (1/1) ... [2020-09-21 10:16:49,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:49" (1/1) ... [2020-09-21 10:16:49,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:49" (1/1) ... [2020-09-21 10:16:49,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:49" (1/1) ... [2020-09-21 10:16:49,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:16:49,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:16:49,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:16:49,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:16:49,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:49" (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 10:16:50,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:16:50,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:16:50,022 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-21 10:16:50,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-21 10:16:50,023 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-09-21 10:16:50,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:16:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:16:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-21 10:16:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-21 10:16:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-21 10:16:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:16:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 10:16:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:16:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:16:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-09-21 10:16:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:16:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:16:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:16:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:16:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 10:16:50,352 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:16:50,353 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-21 10:16:50,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:16:50 BoogieIcfgContainer [2020-09-21 10:16:50,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:16:50,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:16:50,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:16:50,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:16:50,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:16:49" (1/3) ... [2020-09-21 10:16:50,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335d2c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:16:50, skipping insertion in model container [2020-09-21 10:16:50,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:49" (2/3) ... [2020-09-21 10:16:50,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335d2c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:16:50, skipping insertion in model container [2020-09-21 10:16:50,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:16:50" (3/3) ... [2020-09-21 10:16:50,369 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2020-09-21 10:16:50,382 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:16:50,393 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:16:50,418 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:16:50,453 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:16:50,454 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:16:50,454 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:16:50,454 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:16:50,454 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:16:50,454 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:16:50,454 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:16:50,455 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:16:50,478 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-09-21 10:16:50,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 10:16:50,486 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:16:50,487 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] [2020-09-21 10:16:50,488 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:16:50,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:16:50,495 INFO L82 PathProgramCache]: Analyzing trace with hash 397720622, now seen corresponding path program 1 times [2020-09-21 10:16:50,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:16:50,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406324744] [2020-09-21 10:16:50,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:16:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:50,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:16:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:50,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:16:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:50,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:16:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:50,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 10:16:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:50,797 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 10:16:50,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406324744] [2020-09-21 10:16:50,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:16:50,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:16:50,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199256790] [2020-09-21 10:16:50,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:16:50,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:16:50,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:16:50,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:16:50,830 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-09-21 10:16:51,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:16:51,070 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2020-09-21 10:16:51,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:16:51,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-09-21 10:16:51,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:16:51,086 INFO L225 Difference]: With dead ends: 71 [2020-09-21 10:16:51,086 INFO L226 Difference]: Without dead ends: 36 [2020-09-21 10:16:51,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 10:16:51,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-21 10:16:51,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-21 10:16:51,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-21 10:16:51,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-09-21 10:16:51,155 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2020-09-21 10:16:51,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:16:51,156 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-09-21 10:16:51,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:16:51,156 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-09-21 10:16:51,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 10:16:51,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:16:51,159 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] [2020-09-21 10:16:51,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:16:51,160 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:16:51,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:16:51,160 INFO L82 PathProgramCache]: Analyzing trace with hash -54823803, now seen corresponding path program 1 times [2020-09-21 10:16:51,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:16:51,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664967340] [2020-09-21 10:16:51,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:16:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:51,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:16:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:51,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:16:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:51,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:16:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:51,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 10:16:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:51,431 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 10:16:51,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664967340] [2020-09-21 10:16:51,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:16:51,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:16:51,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529890434] [2020-09-21 10:16:51,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:16:51,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:16:51,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:16:51,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:16:51,444 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 6 states. [2020-09-21 10:16:51,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:16:51,721 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-09-21 10:16:51,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 10:16:51,722 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-21 10:16:51,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:16:51,726 INFO L225 Difference]: With dead ends: 51 [2020-09-21 10:16:51,726 INFO L226 Difference]: Without dead ends: 40 [2020-09-21 10:16:51,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:16:51,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-21 10:16:51,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-21 10:16:51,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-21 10:16:51,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-09-21 10:16:51,741 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2020-09-21 10:16:51,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:16:51,742 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-09-21 10:16:51,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:16:51,742 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-09-21 10:16:51,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 10:16:51,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:16:51,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:16:51,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:16:51,745 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:16:51,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:16:51,745 INFO L82 PathProgramCache]: Analyzing trace with hash -268248811, now seen corresponding path program 1 times [2020-09-21 10:16:51,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:16:51,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28113738] [2020-09-21 10:16:51,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:16:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:51,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:16:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:51,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:16:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:51,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:16:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:51,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 10:16:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:51,989 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 10:16:51,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28113738] [2020-09-21 10:16:51,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:16:51,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:16:51,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177156012] [2020-09-21 10:16:51,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:16:51,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:16:51,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:16:51,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:16:51,996 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-09-21 10:16:52,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:16:52,251 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-09-21 10:16:52,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 10:16:52,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-09-21 10:16:52,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:16:52,256 INFO L225 Difference]: With dead ends: 55 [2020-09-21 10:16:52,256 INFO L226 Difference]: Without dead ends: 44 [2020-09-21 10:16:52,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:16:52,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-21 10:16:52,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-09-21 10:16:52,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-21 10:16:52,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-09-21 10:16:52,282 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2020-09-21 10:16:52,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:16:52,283 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-09-21 10:16:52,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:16:52,283 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-09-21 10:16:52,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 10:16:52,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:16:52,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:16:52,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:16:52,287 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:16:52,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:16:52,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1239302998, now seen corresponding path program 1 times [2020-09-21 10:16:52,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:16:52,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950100307] [2020-09-21 10:16:52,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:16:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:16:52,343 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:16:52,344 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:16:52,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:16:52,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:16:52 BoogieIcfgContainer [2020-09-21 10:16:52,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:16:52,388 INFO L168 Benchmark]: Toolchain (without parser) took 2966.65 ms. Allocated memory was 146.8 MB in the beginning and 235.4 MB in the end (delta: 88.6 MB). Free memory was 102.5 MB in the beginning and 147.3 MB in the end (delta: -44.8 MB). Peak memory consumption was 43.8 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:52,389 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 10:16:52,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.29 ms. Allocated memory is still 146.8 MB. Free memory was 101.9 MB in the beginning and 91.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:52,392 INFO L168 Benchmark]: Boogie Preprocessor took 140.49 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 91.0 MB in the beginning and 179.6 MB in the end (delta: -88.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:52,394 INFO L168 Benchmark]: RCFGBuilder took 414.34 ms. Allocated memory is still 202.4 MB. Free memory was 179.6 MB in the beginning and 160.5 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:52,401 INFO L168 Benchmark]: TraceAbstraction took 2022.84 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 159.8 MB in the beginning and 147.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:52,413 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 381.29 ms. Allocated memory is still 146.8 MB. Free memory was 101.9 MB in the beginning and 91.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 140.49 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 91.0 MB in the beginning and 179.6 MB in the end (delta: -88.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 414.34 ms. Allocated memory is still 202.4 MB. Free memory was 179.6 MB in the beginning and 160.5 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2022.84 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 159.8 MB in the beginning and 147.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 72]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 67. Possible FailurePath: [L67] double x = 0.0 / 0.0; [L68] double y = 0.0 / 0.0; [L69] CALL, EXPR fmax_double(x, y) [L55] CALL, EXPR __fpclassify_double(x) [L27] __uint32_t msw, lsw; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; [L55] RET, EXPR __fpclassify_double(x) [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; [L69] RET, EXPR fmax_double(x, y) [L69] double res = fmax_double(x, y); [L71] CALL, EXPR isnan_double(res) [L16] return x != x; [L71] RET, EXPR isnan_double(res) [L71] COND TRUE !isnan_double(res) [L72] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 108 SDslu, 43 SDs, 0 SdLazy, 255 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 5222 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...