/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:59:29,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:59:29,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:59:29,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:59:29,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:59:29,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:59:29,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:59:29,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:59:29,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:59:29,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:59:29,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:59:29,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:59:29,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:59:29,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:59:29,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:59:29,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:59:29,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:59:29,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:59:29,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:59:29,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:59:29,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:59:29,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:59:29,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:59:29,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:59:29,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:59:29,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:59:29,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:59:29,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:59:29,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:59:29,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-22 02:59:29,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:59:29,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:59:29,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:59:29,660 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 [2020-08-22 02:59:29,701 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:59:29,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:59:29,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:59:29,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:59:29,704 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:59:29,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:59:29,704 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:59:29,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:59:29,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:59:29,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:59:29,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:59:29,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:59:29,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:59:29,707 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:59:29,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:59:29,707 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:59:29,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:59:29,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:59:29,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:59:29,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:59:29,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:59:29,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:59:29,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:59:29,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:59:29,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:59:29,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:59:29,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:59:29,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:59:29,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:59:29,710 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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-08-22 02:59:30,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:59:30,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:59:30,027 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:59:30,028 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:59:30,029 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:59:30,029 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-22 02:59:30,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e2a6d2ff/4efe9311ab7845cab462058106c100db/FLAG43e9bafce [2020-08-22 02:59:30,601 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:59:30,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-22 02:59:30,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e2a6d2ff/4efe9311ab7845cab462058106c100db/FLAG43e9bafce [2020-08-22 02:59:30,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e2a6d2ff/4efe9311ab7845cab462058106c100db [2020-08-22 02:59:30,934 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:59:30,936 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:59:30,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:59:30,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:59:30,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:59:30,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:59:30" (1/1) ... [2020-08-22 02:59:30,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4700e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:30, skipping insertion in model container [2020-08-22 02:59:30,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:59:30" (1/1) ... [2020-08-22 02:59:30,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:59:30,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:59:31,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:59:31,168 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:59:31,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:59:31,314 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:59:31,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:31 WrapperNode [2020-08-22 02:59:31,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:59:31,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:59:31,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:59:31,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:59:31,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:31" (1/1) ... [2020-08-22 02:59:31,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:31" (1/1) ... [2020-08-22 02:59:31,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:31" (1/1) ... [2020-08-22 02:59:31,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:31" (1/1) ... [2020-08-22 02:59:31,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:31" (1/1) ... [2020-08-22 02:59:31,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:31" (1/1) ... [2020-08-22 02:59:31,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:31" (1/1) ... [2020-08-22 02:59:31,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:59:31,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:59:31,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:59:31,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:59:31,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:31" (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 [2020-08-22 02:59:31,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:59:31,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:59:31,432 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-22 02:59:31,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-22 02:59:31,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:59:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:59:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-22 02:59:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:59:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 02:59:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:59:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:59:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:59:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 02:59:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-22 02:59:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:59:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:59:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:59:31,825 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:59:31,826 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 02:59:31,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:59:31 BoogieIcfgContainer [2020-08-22 02:59:31,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:59:31,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:59:31,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:59:31,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:59:31,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:59:30" (1/3) ... [2020-08-22 02:59:31,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f63213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:59:31, skipping insertion in model container [2020-08-22 02:59:31,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:31" (2/3) ... [2020-08-22 02:59:31,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f63213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:59:31, skipping insertion in model container [2020-08-22 02:59:31,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:59:31" (3/3) ... [2020-08-22 02:59:31,863 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-08-22 02:59:31,872 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:59:31,879 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:59:31,893 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:59:31,917 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:59:31,917 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:59:31,917 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:59:31,918 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:59:31,918 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:59:31,918 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:59:31,918 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:59:31,918 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:59:31,936 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-08-22 02:59:31,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 02:59:31,943 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:59:31,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:59:31,944 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:59:31,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:59:31,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-08-22 02:59:31,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:59:31,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81281906] [2020-08-22 02:59:31,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:59:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:59:32,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:59:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:59:32,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:59:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:59:32,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:59:32,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81281906] [2020-08-22 02:59:32,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:59:32,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:59:32,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888707740] [2020-08-22 02:59:32,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:59:32,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:59:32,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:59:32,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:59:32,220 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-08-22 02:59:32,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:59:32,470 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-08-22 02:59:32,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 02:59:32,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-22 02:59:32,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:59:32,483 INFO L225 Difference]: With dead ends: 94 [2020-08-22 02:59:32,483 INFO L226 Difference]: Without dead ends: 47 [2020-08-22 02:59:32,487 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 [2020-08-22 02:59:32,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-22 02:59:32,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-08-22 02:59:32,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-22 02:59:32,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-08-22 02:59:32,537 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-08-22 02:59:32,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:59:32,537 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-08-22 02:59:32,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:59:32,538 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-08-22 02:59:32,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 02:59:32,539 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:59:32,539 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] [2020-08-22 02:59:32,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:59:32,540 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:59:32,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:59:32,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-08-22 02:59:32,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:59:32,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260551050] [2020-08-22 02:59:32,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:59:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:59:32,620 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:59:32,621 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:59:32,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:59:32,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:59:32 BoogieIcfgContainer [2020-08-22 02:59:32,642 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:59:32,645 INFO L168 Benchmark]: Toolchain (without parser) took 1708.70 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.1 MB in the beginning and 107.5 MB in the end (delta: -5.4 MB). Peak memory consumption was 58.0 MB. Max. memory is 7.1 GB. [2020-08-22 02:59:32,646 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 02:59:32,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.31 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.9 MB in the beginning and 182.8 MB in the end (delta: -80.9 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-08-22 02:59:32,648 INFO L168 Benchmark]: Boogie Preprocessor took 46.82 ms. Allocated memory is still 203.9 MB. Free memory was 182.8 MB in the beginning and 179.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-08-22 02:59:32,649 INFO L168 Benchmark]: RCFGBuilder took 469.44 ms. Allocated memory is still 203.9 MB. Free memory was 179.9 MB in the beginning and 156.3 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-08-22 02:59:32,650 INFO L168 Benchmark]: TraceAbstraction took 807.83 ms. Allocated memory is still 203.9 MB. Free memory was 155.6 MB in the beginning and 107.5 MB in the end (delta: 48.1 MB). Peak memory consumption was 48.1 MB. Max. memory is 7.1 GB. [2020-08-22 02:59:32,654 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 378.31 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.9 MB in the beginning and 182.8 MB in the end (delta: -80.9 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.82 ms. Allocated memory is still 203.9 MB. Free memory was 182.8 MB in the beginning and 179.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 469.44 ms. Allocated memory is still 203.9 MB. Free memory was 179.9 MB in the beginning and 156.3 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 807.83 ms. Allocated memory is still 203.9 MB. Free memory was 155.6 MB in the beginning and 107.5 MB in the end (delta: 48.1 MB). Peak memory consumption was 48.1 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: 0.2s, 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...