/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=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:40:19,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:40:19,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:40:19,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-18 22:40:19,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:40:19,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:40:19,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:40:19,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:40:19,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:40:19,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:40:19,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:40:19,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:40:19,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:40:19,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:40:19,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:40:19,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:40:19,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 22:40:19,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:40:19,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:40:19,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:40:19,669 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 22:40:19,711 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:40:19,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:40:19,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:40:19,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:40:19,714 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:40:19,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:40:19,714 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:40:19,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:40:19,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:40:19,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:40:19,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:40:19,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:40:19,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:40:19,717 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:40:19,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:40:19,718 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:40:19,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:40:19,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:40:19,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:40:19,718 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:40:19,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:40:19,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:40:19,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:40:19,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:40:19,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:40:19,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:40:19,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:40:19,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:40:19,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:40:19,720 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=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:40:20,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:40:20,083 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:40:20,087 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:40:20,088 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:40:20,089 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:40:20,089 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-18 22:40:20,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46905efe4/c2e48c2ef31f4eb6a728792a9d5e477c/FLAG3a4a63c7f [2020-08-18 22:40:20,605 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:40:20,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-18 22:40:20,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46905efe4/c2e48c2ef31f4eb6a728792a9d5e477c/FLAG3a4a63c7f [2020-08-18 22:40:20,928 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46905efe4/c2e48c2ef31f4eb6a728792a9d5e477c [2020-08-18 22:40:20,937 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:40:20,939 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:40:20,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:40:20,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:40:20,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:40:20,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:40:20" (1/1) ... [2020-08-18 22:40:20,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a0cc214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:20, skipping insertion in model container [2020-08-18 22:40:20,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:40:20" (1/1) ... [2020-08-18 22:40:20,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:40:20,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:40:21,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:40:21,168 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:40:21,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:40:21,301 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:40:21,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:21 WrapperNode [2020-08-18 22:40:21,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:40:21,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:40:21,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:40:21,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:40:21,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:21" (1/1) ... [2020-08-18 22:40:21,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:21" (1/1) ... [2020-08-18 22:40:21,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:21" (1/1) ... [2020-08-18 22:40:21,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:21" (1/1) ... [2020-08-18 22:40:21,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:21" (1/1) ... [2020-08-18 22:40:21,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:21" (1/1) ... [2020-08-18 22:40:21,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:21" (1/1) ... [2020-08-18 22:40:21,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:40:21,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:40:21,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:40:21,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:40:21,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:21" (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 22:40:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:40:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:40:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-18 22:40:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 22:40:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:40:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:40:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-18 22:40:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:40:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 22:40:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:40:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:40:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:40:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 22:40:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 22:40:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:40:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:40:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:40:21,766 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:40:21,766 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 22:40:21,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:40:21 BoogieIcfgContainer [2020-08-18 22:40:21,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:40:21,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:40:21,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:40:21,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:40:21,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:40:20" (1/3) ... [2020-08-18 22:40:21,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32624275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:40:21, skipping insertion in model container [2020-08-18 22:40:21,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:21" (2/3) ... [2020-08-18 22:40:21,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32624275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:40:21, skipping insertion in model container [2020-08-18 22:40:21,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:40:21" (3/3) ... [2020-08-18 22:40:21,780 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-08-18 22:40:21,791 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:40:21,798 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:40:21,814 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:40:21,841 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:40:21,841 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:40:21,842 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:40:21,842 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:40:21,842 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:40:21,842 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:40:21,843 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:40:21,843 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:40:21,864 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-18 22:40:21,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 22:40:21,872 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:40:21,873 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 22:40:21,873 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:40:21,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:40:21,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2020-08-18 22:40:21,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:40:21,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324829555] [2020-08-18 22:40:21,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:40:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:22,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:40:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:22,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:40:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:22,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:40:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:22,171 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 22:40:22,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324829555] [2020-08-18 22:40:22,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:40:22,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:40:22,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229985825] [2020-08-18 22:40:22,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:40:22,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:40:22,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:40:22,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:40:22,200 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-18 22:40:22,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:40:22,461 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-18 22:40:22,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 22:40:22,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-18 22:40:22,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:40:22,475 INFO L225 Difference]: With dead ends: 86 [2020-08-18 22:40:22,476 INFO L226 Difference]: Without dead ends: 43 [2020-08-18 22:40:22,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:40:22,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-18 22:40:22,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-18 22:40:22,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-18 22:40:22,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-18 22:40:22,531 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-18 22:40:22,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:40:22,531 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-18 22:40:22,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:40:22,532 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-18 22:40:22,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 22:40:22,533 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:40:22,533 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 22:40:22,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:40:22,534 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:40:22,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:40:22,534 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2020-08-18 22:40:22,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:40:22,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132455614] [2020-08-18 22:40:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:40:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 22:40:22,594 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 22:40:22,594 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:40:22,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:40:22,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:40:22 BoogieIcfgContainer [2020-08-18 22:40:22,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:40:22,621 INFO L168 Benchmark]: Toolchain (without parser) took 1681.27 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 101.7 MB in the beginning and 108.9 MB in the end (delta: -7.2 MB). Peak memory consumption was 55.2 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:22,622 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 22:40:22,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.59 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 101.5 MB in the beginning and 181.7 MB in the end (delta: -80.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:22,624 INFO L168 Benchmark]: Boogie Preprocessor took 49.35 ms. Allocated memory is still 202.9 MB. Free memory was 181.7 MB in the beginning and 179.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:22,625 INFO L168 Benchmark]: RCFGBuilder took 418.85 ms. Allocated memory is still 202.9 MB. Free memory was 179.3 MB in the beginning and 157.0 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:22,626 INFO L168 Benchmark]: TraceAbstraction took 845.53 ms. Allocated memory is still 202.9 MB. Free memory was 156.3 MB in the beginning and 108.9 MB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:22,631 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 362.59 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 101.5 MB in the beginning and 181.7 MB in the end (delta: -80.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.35 ms. Allocated memory is still 202.9 MB. Free memory was 181.7 MB in the beginning and 179.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 418.85 ms. Allocated memory is still 202.9 MB. Free memory was 179.3 MB in the beginning and 157.0 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 845.53 ms. Allocated memory is still 202.9 MB. Free memory was 156.3 MB in the beginning and 108.9 MB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 80. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L88] double x = 0.0 / 0.0; [L89] CALL, EXPR floor_double(x) [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L26] COND TRUE j0 < 20 [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; [L89] RET, EXPR floor_double(x) [L89] double res = floor_double(x); [L92] CALL, EXPR isnan_double(res) [L80] return x != x; [L92] RET, EXPR isnan_double(res) [L92] COND TRUE !isnan_double(res) [L93] __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, 0.1s 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...