/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 -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 11:17:25,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:17:25,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:17:25,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:17:25,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:17:25,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:17:25,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:17:25,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:17:25,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:17:25,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:17:25,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:17:25,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:17:25,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:17:25,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:17:25,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:17:25,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:17:25,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:17:25,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:17:25,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:17:25,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:17:25,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:17:25,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:17:25,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:17:25,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:17:25,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 11:17:25,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:17:25,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:17:25,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:17:25,722 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 11:17:25,763 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:17:25,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:17:25,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:17:25,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:17:25,766 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:17:25,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:17:25,766 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 11:17:25,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:17:25,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 11:17:25,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:17:25,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:17:25,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:17:25,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:17:25,769 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 11:17:25,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:17:25,769 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:17:25,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:17:25,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:17:25,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:17:25,770 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:17:25,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:17:25,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:17:25,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:17:25,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:17:25,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:17:25,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:17:25,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:17:25,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:17:25,772 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:17:25,772 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 [2020-08-18 11:17:26,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:17:26,119 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:17:26,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:17:26,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:17:26,125 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:17:26,125 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-18 11:17:26,189 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62e21cd98/5dce3a0dbab646a59a143aa3f39fbe10/FLAGfeb79fb00 [2020-08-18 11:17:26,704 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:17:26,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-18 11:17:26,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62e21cd98/5dce3a0dbab646a59a143aa3f39fbe10/FLAGfeb79fb00 [2020-08-18 11:17:27,043 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62e21cd98/5dce3a0dbab646a59a143aa3f39fbe10 [2020-08-18 11:17:27,052 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:17:27,054 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:17:27,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:17:27,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:17:27,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:17:27,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:17:27" (1/1) ... [2020-08-18 11:17:27,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@446b24d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:27, skipping insertion in model container [2020-08-18 11:17:27,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:17:27" (1/1) ... [2020-08-18 11:17:27,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:17:27,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:17:27,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:17:27,277 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:17:27,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:17:27,432 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:17:27,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:27 WrapperNode [2020-08-18 11:17:27,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:17:27,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:17:27,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:17:27,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:17:27,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:27" (1/1) ... [2020-08-18 11:17:27,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:27" (1/1) ... [2020-08-18 11:17:27,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:27" (1/1) ... [2020-08-18 11:17:27,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:27" (1/1) ... [2020-08-18 11:17:27,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:27" (1/1) ... [2020-08-18 11:17:27,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:27" (1/1) ... [2020-08-18 11:17:27,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:27" (1/1) ... [2020-08-18 11:17:27,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:17:27,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:17:27,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:17:27,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:17:27,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:27" (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 11:17:27,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:17:27,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:17:27,540 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 11:17:27,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-18 11:17:27,541 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:17:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:17:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 11:17:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-18 11:17:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:17:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 11:17:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:17:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:17:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:17:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 11:17:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:17:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:17:27,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:17:27,912 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:17:27,912 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 11:17:27,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:17:27 BoogieIcfgContainer [2020-08-18 11:17:27,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:17:27,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:17:27,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:17:27,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:17:27,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:17:27" (1/3) ... [2020-08-18 11:17:27,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c540c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:17:27, skipping insertion in model container [2020-08-18 11:17:27,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:27" (2/3) ... [2020-08-18 11:17:27,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c540c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:17:27, skipping insertion in model container [2020-08-18 11:17:27,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:17:27" (3/3) ... [2020-08-18 11:17:27,925 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-08-18 11:17:27,937 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:17:27,945 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:17:27,960 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:17:27,994 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:17:27,995 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:17:27,995 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:17:27,995 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:17:27,996 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:17:27,996 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:17:27,996 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:17:27,996 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:17:28,015 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-18 11:17:28,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 11:17:28,022 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:17:28,023 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 11:17:28,024 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:17:28,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:17:28,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2020-08-18 11:17:28,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:17:28,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321592326] [2020-08-18 11:17:28,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:17:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:17:28,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:17:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:17:28,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:17:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:17:28,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:17:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:17:28,326 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 11:17:28,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321592326] [2020-08-18 11:17:28,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:17:28,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:17:28,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018842791] [2020-08-18 11:17:28,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:17:28,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:17:28,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:17:28,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:17:28,354 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-18 11:17:28,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:17:28,588 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-18 11:17:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 11:17:28,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-18 11:17:28,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:17:28,602 INFO L225 Difference]: With dead ends: 86 [2020-08-18 11:17:28,602 INFO L226 Difference]: Without dead ends: 43 [2020-08-18 11:17:28,606 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 11:17:28,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-18 11:17:28,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-18 11:17:28,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-18 11:17:28,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-18 11:17:28,655 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-18 11:17:28,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:17:28,655 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-18 11:17:28,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:17:28,656 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-18 11:17:28,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 11:17:28,657 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:17:28,657 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 11:17:28,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:17:28,658 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:17:28,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:17:28,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2020-08-18 11:17:28,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:17:28,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633605334] [2020-08-18 11:17:28,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:17:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 11:17:28,718 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 11:17:28,718 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 11:17:28,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:17:28,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:17:28 BoogieIcfgContainer [2020-08-18 11:17:28,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 11:17:28,747 INFO L168 Benchmark]: Toolchain (without parser) took 1692.48 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 103.5 MB in the beginning and 106.6 MB in the end (delta: -3.2 MB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. [2020-08-18 11:17:28,748 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 11:17:28,750 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.51 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 103.3 MB in the beginning and 178.8 MB in the end (delta: -75.5 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-08-18 11:17:28,751 INFO L168 Benchmark]: Boogie Preprocessor took 41.88 ms. Allocated memory is still 201.9 MB. Free memory was 178.8 MB in the beginning and 176.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-08-18 11:17:28,751 INFO L168 Benchmark]: RCFGBuilder took 440.73 ms. Allocated memory is still 201.9 MB. Free memory was 176.8 MB in the beginning and 154.4 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-18 11:17:28,752 INFO L168 Benchmark]: TraceAbstraction took 826.36 ms. Allocated memory is still 201.9 MB. Free memory was 153.8 MB in the beginning and 106.6 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. [2020-08-18 11:17:28,762 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 378.51 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 103.3 MB in the beginning and 178.8 MB in the end (delta: -75.5 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.88 ms. Allocated memory is still 201.9 MB. Free memory was 178.8 MB in the beginning and 176.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 440.73 ms. Allocated memory is still 201.9 MB. Free memory was 176.8 MB in the beginning and 154.4 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 826.36 ms. Allocated memory is still 201.9 MB. Free memory was 153.8 MB in the beginning and 106.6 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 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, 0.1s 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...