/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST -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 0.1.25-5644d1e-m [2020-08-18 21:52:00,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:52:00,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:52:00,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:52:00,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:52:00,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:52:00,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:52:00,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:52:00,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:52:00,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:52:00,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:52:00,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:52:00,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:52:00,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:52:00,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:52:00,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:52:00,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:52:00,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:52:00,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:52:00,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:52:00,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:52:00,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:52:00,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:52:00,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:52:00,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 21:52:00,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:52:00,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:52:00,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:52:00,482 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 [2020-08-18 21:52:00,508 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:52:00,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:52:00,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:52:00,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:52:00,510 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:52:00,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:52:00,511 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:52:00,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:52:00,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:52:00,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:52:00,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:52:00,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:52:00,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:52:00,512 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:52:00,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:52:00,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:52:00,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:52:00,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:52:00,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:52:00,513 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:52:00,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:52:00,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:52:00,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:52:00,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:52:00,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:52:00,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:52:00,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:52:00,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:52:00,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:52:00,516 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=5;interpolation-heuristic=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 21:52:00,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:52:00,834 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:52:00,845 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:52:00,847 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:52:00,847 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:52:00,851 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-18 21:52:00,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c26e66938/8c448601584d4cd9b5265fe8eba0fe1f/FLAGded33f19f [2020-08-18 21:52:01,404 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:52:01,405 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-18 21:52:01,417 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c26e66938/8c448601584d4cd9b5265fe8eba0fe1f/FLAGded33f19f [2020-08-18 21:52:01,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c26e66938/8c448601584d4cd9b5265fe8eba0fe1f [2020-08-18 21:52:01,765 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:52:01,766 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:52:01,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:52:01,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:52:01,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:52:01,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:52:01" (1/1) ... [2020-08-18 21:52:01,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d17223b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:52:01, skipping insertion in model container [2020-08-18 21:52:01,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:52:01" (1/1) ... [2020-08-18 21:52:01,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:52:01,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:52:01,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:52:02,000 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:52:02,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:52:02,131 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:52:02,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:52:02 WrapperNode [2020-08-18 21:52:02,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:52:02,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:52:02,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:52:02,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:52:02,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:52:02" (1/1) ... [2020-08-18 21:52:02,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:52:02" (1/1) ... [2020-08-18 21:52:02,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:52:02" (1/1) ... [2020-08-18 21:52:02,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:52:02" (1/1) ... [2020-08-18 21:52:02,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:52:02" (1/1) ... [2020-08-18 21:52:02,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:52:02" (1/1) ... [2020-08-18 21:52:02,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:52:02" (1/1) ... [2020-08-18 21:52:02,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:52:02,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:52:02,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:52:02,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:52:02,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:52:02" (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 [2020-08-18 21:52:02,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:52:02,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:52:02,266 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 21:52:02,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-18 21:52:02,267 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:52:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:52:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 21:52:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-18 21:52:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:52:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 21:52:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:52:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:52:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:52:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 21:52:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:52:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:52:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:52:02,676 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:52:02,676 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 21:52:02,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:52:02 BoogieIcfgContainer [2020-08-18 21:52:02,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:52:02,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:52:02,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:52:02,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:52:02,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:52:01" (1/3) ... [2020-08-18 21:52:02,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41462623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:52:02, skipping insertion in model container [2020-08-18 21:52:02,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:52:02" (2/3) ... [2020-08-18 21:52:02,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41462623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:52:02, skipping insertion in model container [2020-08-18 21:52:02,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:52:02" (3/3) ... [2020-08-18 21:52:02,689 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-08-18 21:52:02,700 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:52:02,708 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:52:02,722 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:52:02,747 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:52:02,748 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:52:02,748 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:52:02,748 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:52:02,749 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:52:02,749 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:52:02,749 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:52:02,749 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:52:02,774 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-18 21:52:02,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 21:52:02,782 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:52:02,783 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] [2020-08-18 21:52:02,783 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:52:02,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:52:02,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2020-08-18 21:52:02,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:52:02,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291750029] [2020-08-18 21:52:02,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:52:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:02,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:52:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:03,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:52:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:03,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:52:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:03,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:52:03,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291750029] [2020-08-18 21:52:03,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:52:03,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:52:03,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383164376] [2020-08-18 21:52:03,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:52:03,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:52:03,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:52:03,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:52:03,082 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-18 21:52:03,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:52:03,297 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-18 21:52:03,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:52:03,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-18 21:52:03,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:52:03,312 INFO L225 Difference]: With dead ends: 86 [2020-08-18 21:52:03,312 INFO L226 Difference]: Without dead ends: 43 [2020-08-18 21:52:03,316 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 [2020-08-18 21:52:03,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-18 21:52:03,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-18 21:52:03,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-18 21:52:03,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-18 21:52:03,359 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-18 21:52:03,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:52:03,359 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-18 21:52:03,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:52:03,360 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-18 21:52:03,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 21:52:03,361 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:52:03,361 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] [2020-08-18 21:52:03,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:52:03,362 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:52:03,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:52:03,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2020-08-18 21:52:03,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:52:03,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906839523] [2020-08-18 21:52:03,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:52:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 21:52:03,443 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 21:52:03,444 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 21:52:03,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:52:03,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:52:03 BoogieIcfgContainer [2020-08-18 21:52:03,494 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:52:03,498 INFO L168 Benchmark]: Toolchain (without parser) took 1730.42 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 106.9 MB in the end (delta: -6.1 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. [2020-08-18 21:52:03,499 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 21:52:03,504 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.90 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 179.9 MB in the end (delta: -79.3 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-08-18 21:52:03,507 INFO L168 Benchmark]: Boogie Preprocessor took 54.24 ms. Allocated memory is still 201.3 MB. Free memory was 179.9 MB in the beginning and 177.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-18 21:52:03,508 INFO L168 Benchmark]: RCFGBuilder took 492.60 ms. Allocated memory is still 201.3 MB. Free memory was 177.3 MB in the beginning and 155.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-08-18 21:52:03,509 INFO L168 Benchmark]: TraceAbstraction took 812.83 ms. Allocated memory is still 201.3 MB. Free memory was 154.3 MB in the beginning and 106.9 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. [2020-08-18 21:52:03,516 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 365.90 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 179.9 MB in the end (delta: -79.3 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.24 ms. Allocated memory is still 201.3 MB. Free memory was 179.9 MB in the beginning and 177.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 492.60 ms. Allocated memory is still 201.3 MB. Free memory was 177.3 MB in the beginning and 155.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 812.83 ms. Allocated memory is still 201.3 MB. Free memory was 154.3 MB in the beginning and 106.9 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 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: 0.7s, 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...