/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:17:30,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:17:30,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:17:30,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:17:30,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:17:30,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:17:30,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:17:30,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:17:30,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:17:30,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:17:30,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:17:30,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:17:30,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:17:30,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:17:30,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:17:30,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:17:30,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:17:30,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:17:30,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:17:30,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:17:30,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:17:30,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:17:30,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:17:30,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:17:30,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:17:30,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:17:30,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:17:30,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:17:30,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:17:30,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 17:17:30,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:17:30,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:17:30,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:17:30,139 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 [2020-08-21 17:17:30,175 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:17:30,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:17:30,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:17:30,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:17:30,178 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:17:30,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:17:30,178 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:17:30,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:17:30,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:17:30,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:17:30,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:17:30,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:17:30,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:17:30,181 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:17:30,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:17:30,181 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:17:30,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:17:30,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:17:30,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:17:30,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:17:30,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:17:30,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:17:30,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:17:30,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:17:30,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:17:30,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:17:30,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:17:30,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:17:30,184 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:17:30,184 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=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:17:30,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:17:30,516 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:17:30,522 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:17:30,524 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:17:30,524 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:17:30,525 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-21 17:17:30,582 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a649a875f/c1ced47a8e334a1d91b94c0f8e4d7f88/FLAG4791cdd21 [2020-08-21 17:17:31,044 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:17:31,045 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-21 17:17:31,054 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a649a875f/c1ced47a8e334a1d91b94c0f8e4d7f88/FLAG4791cdd21 [2020-08-21 17:17:31,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a649a875f/c1ced47a8e334a1d91b94c0f8e4d7f88 [2020-08-21 17:17:31,348 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:17:31,350 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:17:31,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:17:31,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:17:31,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:17:31,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:17:31" (1/1) ... [2020-08-21 17:17:31,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@352fd783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:31, skipping insertion in model container [2020-08-21 17:17:31,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:17:31" (1/1) ... [2020-08-21 17:17:31,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:17:31,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:17:31,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:17:31,572 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:17:31,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:17:31,627 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:17:31,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:31 WrapperNode [2020-08-21 17:17:31,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:17:31,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:17:31,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:17:31,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:17:31,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:31" (1/1) ... [2020-08-21 17:17:31,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:31" (1/1) ... [2020-08-21 17:17:31,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:31" (1/1) ... [2020-08-21 17:17:31,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:31" (1/1) ... [2020-08-21 17:17:31,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:31" (1/1) ... [2020-08-21 17:17:31,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:31" (1/1) ... [2020-08-21 17:17:31,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:31" (1/1) ... [2020-08-21 17:17:31,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:17:31,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:17:31,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:17:31,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:17:31,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:31" (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 [2020-08-21 17:17:31,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:17:31,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:17:31,858 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 17:17:31,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-21 17:17:31,859 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:17:31,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:17:31,859 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 17:17:31,859 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-21 17:17:31,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:17:31,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 17:17:31,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:17:31,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:17:31,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:17:31,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 17:17:31,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:17:31,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:17:31,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:17:32,240 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:17:32,240 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 17:17:32,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:17:32 BoogieIcfgContainer [2020-08-21 17:17:32,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:17:32,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:17:32,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:17:32,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:17:32,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:17:31" (1/3) ... [2020-08-21 17:17:32,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ac7b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:17:32, skipping insertion in model container [2020-08-21 17:17:32,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:31" (2/3) ... [2020-08-21 17:17:32,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ac7b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:17:32, skipping insertion in model container [2020-08-21 17:17:32,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:17:32" (3/3) ... [2020-08-21 17:17:32,253 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-08-21 17:17:32,263 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:17:32,269 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:17:32,282 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:17:32,308 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:17:32,308 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:17:32,308 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:17:32,308 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:17:32,308 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:17:32,309 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:17:32,309 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:17:32,309 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:17:32,330 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-08-21 17:17:32,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 17:17:32,336 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:17:32,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:17:32,338 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:17:32,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:17:32,343 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-08-21 17:17:32,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:17:32,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347841164] [2020-08-21 17:17:32,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:17:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:32,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:17:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:32,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:17:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:32,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:17:32,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347841164] [2020-08-21 17:17:32,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:17:32,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:17:32,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205041796] [2020-08-21 17:17:32,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:17:32,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:17:32,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:17:32,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:17:32,635 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-08-21 17:17:32,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:17:32,883 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-08-21 17:17:32,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 17:17:32,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-08-21 17:17:32,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:17:32,897 INFO L225 Difference]: With dead ends: 76 [2020-08-21 17:17:32,897 INFO L226 Difference]: Without dead ends: 38 [2020-08-21 17:17:32,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:17:32,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-21 17:17:32,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-21 17:17:32,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-21 17:17:32,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-08-21 17:17:32,943 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-08-21 17:17:32,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:17:32,943 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-08-21 17:17:32,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:17:32,944 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-08-21 17:17:32,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 17:17:32,945 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:17:32,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:17:32,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:17:32,946 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:17:32,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:17:32,946 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-08-21 17:17:32,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:17:32,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714822309] [2020-08-21 17:17:32,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:17:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 17:17:32,992 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 17:17:32,992 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 17:17:32,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:17:33,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:17:33 BoogieIcfgContainer [2020-08-21 17:17:33,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:17:33,020 INFO L168 Benchmark]: Toolchain (without parser) took 1666.18 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.4 MB in the beginning and 111.8 MB in the end (delta: -11.4 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:33,020 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 17:17:33,021 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.64 ms. Allocated memory is still 138.9 MB. Free memory was 100.0 MB in the beginning and 88.6 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:33,024 INFO L168 Benchmark]: Boogie Preprocessor took 163.57 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 88.6 MB in the beginning and 179.6 MB in the end (delta: -90.9 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:33,025 INFO L168 Benchmark]: RCFGBuilder took 451.86 ms. Allocated memory is still 202.4 MB. Free memory was 179.6 MB in the beginning and 157.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:33,026 INFO L168 Benchmark]: TraceAbstraction took 767.95 ms. Allocated memory is still 202.4 MB. Free memory was 156.9 MB in the beginning and 111.8 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:33,034 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.64 ms. Allocated memory is still 138.9 MB. Free memory was 100.0 MB in the beginning and 88.6 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 163.57 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 88.6 MB in the beginning and 179.6 MB in the end (delta: -90.9 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 451.86 ms. Allocated memory is still 202.4 MB. Free memory was 179.6 MB in the beginning and 157.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 767.95 ms. Allocated memory is still 202.4 MB. Free memory was 156.9 MB in the beginning and 111.8 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: 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 someUnaryDOUBLEoperation at line 91, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 95. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L91] double x = -0.0; [L92] 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; [L92] RET, EXPR ceil_double(x) [L92] double res = ceil_double(x); [L95] COND TRUE res != x [L96] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 47 SDslu, 5 SDs, 0 SdLazy, 55 SolverSat, 7 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 697 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...