/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:47:06,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:47:07,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:47:07,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:47:07,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:47:07,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:47:07,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:47:07,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:47:07,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:47:07,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:47:07,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:47:07,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:47:07,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:47:07,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:47:07,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:47:07,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:47:07,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:47:07,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:47:07,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:47:07,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:47:07,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:47:07,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:47:07,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:47:07,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:47:07,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-27 21:47:07,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:47:07,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:47:07,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:47:07,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:47:07,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:47:07,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:47:07,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:47:07,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:47:07,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:47:07,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:47:07,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:47:07,072 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 [2020-08-27 21:47:07,108 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:47:07,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:47:07,110 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:47:07,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:47:07,110 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:47:07,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:47:07,111 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:47:07,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:47:07,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:47:07,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:47:07,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:47:07,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:47:07,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:47:07,112 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:47:07,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:47:07,113 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:47:07,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:47:07,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:47:07,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:47:07,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:47:07,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:47:07,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:47:07,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:47:07,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:47:07,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:47:07,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:47:07,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:47:07,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:47:07,115 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:47:07,115 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-27 21:47:07,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:47:07,662 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:47:07,668 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:47:07,670 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:47:07,670 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:47:07,672 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-27 21:47:07,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44bacb0dc/5817697c002c4013b04b8f033bf549e3/FLAGd6ed1af76 [2020-08-27 21:47:08,329 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:47:08,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-27 21:47:08,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44bacb0dc/5817697c002c4013b04b8f033bf549e3/FLAGd6ed1af76 [2020-08-27 21:47:08,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44bacb0dc/5817697c002c4013b04b8f033bf549e3 [2020-08-27 21:47:08,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:47:08,692 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:47:08,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:47:08,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:47:08,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:47:08,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:47:08" (1/1) ... [2020-08-27 21:47:08,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25814f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:08, skipping insertion in model container [2020-08-27 21:47:08,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:47:08" (1/1) ... [2020-08-27 21:47:08,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:47:08,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:47:09,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:47:09,015 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:47:09,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:47:09,178 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:47:09,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:09 WrapperNode [2020-08-27 21:47:09,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:47:09,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:47:09,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:47:09,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:47:09,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:09" (1/1) ... [2020-08-27 21:47:09,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:09" (1/1) ... [2020-08-27 21:47:09,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:09" (1/1) ... [2020-08-27 21:47:09,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:09" (1/1) ... [2020-08-27 21:47:09,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:09" (1/1) ... [2020-08-27 21:47:09,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:09" (1/1) ... [2020-08-27 21:47:09,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:09" (1/1) ... [2020-08-27 21:47:09,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:47:09,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:47:09,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:47:09,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:47:09,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:09" (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 [2020-08-27 21:47:09,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:47:09,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:47:09,308 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-27 21:47:09,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-27 21:47:09,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:47:09,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:47:09,309 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-27 21:47:09,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:47:09,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-27 21:47:09,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:47:09,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:47:09,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:47:09,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-27 21:47:09,310 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-27 21:47:09,310 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:47:09,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:47:09,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:47:09,734 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:47:09,734 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-27 21:47:09,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:47:09 BoogieIcfgContainer [2020-08-27 21:47:09,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:47:09,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:47:09,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:47:09,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:47:09,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:47:08" (1/3) ... [2020-08-27 21:47:09,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfcff11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:47:09, skipping insertion in model container [2020-08-27 21:47:09,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:09" (2/3) ... [2020-08-27 21:47:09,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfcff11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:47:09, skipping insertion in model container [2020-08-27 21:47:09,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:47:09" (3/3) ... [2020-08-27 21:47:09,748 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-08-27 21:47:09,758 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:47:09,767 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:47:09,789 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:47:09,817 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:47:09,817 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:47:09,817 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:47:09,817 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:47:09,818 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:47:09,818 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:47:09,818 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:47:09,818 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:47:09,841 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-08-27 21:47:09,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-27 21:47:09,849 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:47:09,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:47:09,851 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:47:09,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:47:09,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-08-27 21:47:09,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:47:09,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618494895] [2020-08-27 21:47:09,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:47:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:10,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:47:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:10,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:47:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:47:10,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618494895] [2020-08-27 21:47:10,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:47:10,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:47:10,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023712823] [2020-08-27 21:47:10,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:47:10,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:47:10,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:47:10,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:47:10,154 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-08-27 21:47:10,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:47:10,440 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-08-27 21:47:10,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-27 21:47:10,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-27 21:47:10,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:47:10,456 INFO L225 Difference]: With dead ends: 94 [2020-08-27 21:47:10,456 INFO L226 Difference]: Without dead ends: 47 [2020-08-27 21:47:10,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-27 21:47:10,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-27 21:47:10,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-08-27 21:47:10,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-27 21:47:10,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-08-27 21:47:10,522 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-08-27 21:47:10,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:47:10,523 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-08-27 21:47:10,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:47:10,523 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-08-27 21:47:10,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-27 21:47:10,525 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:47:10,525 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] [2020-08-27 21:47:10,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:47:10,526 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:47:10,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:47:10,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-08-27 21:47:10,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:47:10,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568180989] [2020-08-27 21:47:10,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:47:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-27 21:47:10,585 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-27 21:47:10,585 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-27 21:47:10,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:47:10,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:47:10 BoogieIcfgContainer [2020-08-27 21:47:10,616 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-27 21:47:10,620 INFO L168 Benchmark]: Toolchain (without parser) took 1926.92 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.4 MB in the beginning and 106.4 MB in the end (delta: -4.0 MB). Peak memory consumption was 58.9 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:10,621 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-27 21:47:10,623 INFO L168 Benchmark]: CACSL2BoogieTranslator took 486.17 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.2 MB in the beginning and 181.4 MB in the end (delta: -79.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:10,624 INFO L168 Benchmark]: Boogie Preprocessor took 57.47 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 178.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:10,625 INFO L168 Benchmark]: RCFGBuilder took 501.49 ms. Allocated memory is still 203.4 MB. Free memory was 178.9 MB in the beginning and 155.5 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:10,625 INFO L168 Benchmark]: TraceAbstraction took 876.70 ms. Allocated memory is still 203.4 MB. Free memory was 154.9 MB in the beginning and 106.4 MB in the end (delta: 48.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:10,630 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 486.17 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.2 MB in the beginning and 181.4 MB in the end (delta: -79.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.47 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 178.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 501.49 ms. Allocated memory is still 203.4 MB. Free memory was 178.9 MB in the beginning and 155.5 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 876.70 ms. Allocated memory is still 203.4 MB. Free memory was 154.9 MB in the beginning and 106.4 MB in the end (delta: 48.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 103]: 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 someUnaryDOUBLEoperation at line 98, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 102. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L98] double x = -0.0; [L99] 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; [L99] RET, EXPR floor_double(x) [L99] double res = floor_double(x); [L102] EXPR res == -0.0 && __signbit_double(res) == 1 [L102] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L103] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 55 SDslu, 5 SDs, 0 SdLazy, 65 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 756 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...