/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:22:05,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:22:05,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:22:05,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:22:05,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:22:05,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:22:05,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:22:05,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:22:05,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:22:05,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:22:05,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:22:05,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:22:05,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:22:05,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:22:05,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:22:05,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:22:05,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:22:05,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:22:05,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:22:05,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:22:05,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:22:05,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:22:05,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:22:05,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:22:05,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:22:05,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:22:05,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:22:05,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:22:05,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:22:05,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-22 01:22:05,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:22:05,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:22:05,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:22:05,471 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 01:22:05,511 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:22:05,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:22:05,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:22:05,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:22:05,514 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:22:05,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:22:05,514 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:22:05,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:22:05,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:22:05,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:22:05,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:22:05,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:22:05,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:22:05,517 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:22:05,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:22:05,517 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:22:05,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:22:05,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:22:05,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:22:05,518 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:22:05,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:22:05,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:22:05,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:22:05,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:22:05,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:22:05,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:22:05,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:22:05,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:22:05,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:22:05,520 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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:22:05,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:22:05,862 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:22:05,867 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:22:05,868 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:22:05,869 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:22:05,870 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-22 01:22:05,954 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90ea1167a/59c664b911684bf7a0a43dde82ef56bd/FLAG0e1463fc2 [2020-08-22 01:22:06,452 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:22:06,453 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-22 01:22:06,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90ea1167a/59c664b911684bf7a0a43dde82ef56bd/FLAG0e1463fc2 [2020-08-22 01:22:06,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90ea1167a/59c664b911684bf7a0a43dde82ef56bd [2020-08-22 01:22:06,812 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:22:06,814 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:22:06,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:22:06,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:22:06,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:22:06,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:22:06" (1/1) ... [2020-08-22 01:22:06,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21b0fd4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:06, skipping insertion in model container [2020-08-22 01:22:06,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:22:06" (1/1) ... [2020-08-22 01:22:06,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:22:06,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:22:07,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:22:07,119 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:22:07,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:22:07,283 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:22:07,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:07 WrapperNode [2020-08-22 01:22:07,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:22:07,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:22:07,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:22:07,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:22:07,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:07" (1/1) ... [2020-08-22 01:22:07,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:07" (1/1) ... [2020-08-22 01:22:07,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:07" (1/1) ... [2020-08-22 01:22:07,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:07" (1/1) ... [2020-08-22 01:22:07,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:07" (1/1) ... [2020-08-22 01:22:07,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:07" (1/1) ... [2020-08-22 01:22:07,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:07" (1/1) ... [2020-08-22 01:22:07,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:22:07,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:22:07,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:22:07,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:22:07,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:07" (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 01:22:07,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:22:07,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:22:07,411 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-22 01:22:07,411 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 01:22:07,411 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:22:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:22:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-22 01:22:07,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:22:07,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 01:22:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:22:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:22:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:22:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 01:22:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 01:22:07,414 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:22:07,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:22:07,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:22:07,781 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:22:07,782 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 01:22:07,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:22:07 BoogieIcfgContainer [2020-08-22 01:22:07,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:22:07,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:22:07,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:22:07,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:22:07,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:22:06" (1/3) ... [2020-08-22 01:22:07,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f04c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:22:07, skipping insertion in model container [2020-08-22 01:22:07,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:07" (2/3) ... [2020-08-22 01:22:07,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f04c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:22:07, skipping insertion in model container [2020-08-22 01:22:07,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:22:07" (3/3) ... [2020-08-22 01:22:07,796 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-08-22 01:22:07,809 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:22:07,817 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:22:07,834 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:22:07,864 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:22:07,864 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:22:07,865 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:22:07,865 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:22:07,865 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:22:07,865 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:22:07,866 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:22:07,866 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:22:07,887 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-22 01:22:07,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 01:22:07,895 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:22:07,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:22:07,897 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:22:07,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:22:07,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2020-08-22 01:22:07,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:22:07,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496714226] [2020-08-22 01:22:07,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:22:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:08,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:22:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:08,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:22:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:08,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:22:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:08,144 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 01:22:08,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496714226] [2020-08-22 01:22:08,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:22:08,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 01:22:08,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705876549] [2020-08-22 01:22:08,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:22:08,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:22:08,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:22:08,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:22:08,175 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-22 01:22:08,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:22:08,500 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-22 01:22:08,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 01:22:08,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-22 01:22:08,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:22:08,523 INFO L225 Difference]: With dead ends: 86 [2020-08-22 01:22:08,524 INFO L226 Difference]: Without dead ends: 43 [2020-08-22 01:22:08,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 01:22:08,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-22 01:22:08,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-22 01:22:08,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-22 01:22:08,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-22 01:22:08,574 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-22 01:22:08,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:22:08,575 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-22 01:22:08,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:22:08,575 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-22 01:22:08,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 01:22:08,577 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:22:08,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:22:08,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:22:08,577 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:22:08,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:22:08,578 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2020-08-22 01:22:08,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:22:08,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943560994] [2020-08-22 01:22:08,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:22:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 01:22:08,657 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 01:22:08,658 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 01:22:08,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:22:08,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 01:22:08 BoogieIcfgContainer [2020-08-22 01:22:08,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 01:22:08,686 INFO L168 Benchmark]: Toolchain (without parser) took 1871.18 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 99.4 MB in the beginning and 105.8 MB in the end (delta: -6.4 MB). Peak memory consumption was 57.5 MB. Max. memory is 7.1 GB. [2020-08-22 01:22:08,687 INFO L168 Benchmark]: CDTParser took 0.63 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 01:22:08,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 471.29 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 99.2 MB in the beginning and 179.5 MB in the end (delta: -80.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-08-22 01:22:08,689 INFO L168 Benchmark]: Boogie Preprocessor took 54.85 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 176.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-08-22 01:22:08,690 INFO L168 Benchmark]: RCFGBuilder took 446.65 ms. Allocated memory is still 200.8 MB. Free memory was 176.3 MB in the beginning and 154.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-08-22 01:22:08,691 INFO L168 Benchmark]: TraceAbstraction took 893.42 ms. Allocated memory is still 200.8 MB. Free memory was 154.1 MB in the beginning and 105.8 MB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. [2020-08-22 01:22:08,695 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 471.29 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 99.2 MB in the beginning and 179.5 MB in the end (delta: -80.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.85 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 176.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 446.65 ms. Allocated memory is still 200.8 MB. Free memory was 176.3 MB in the beginning and 154.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 893.42 ms. Allocated memory is still 200.8 MB. Free memory was 154.1 MB in the beginning and 105.8 MB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 80. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L88] double x = 0.0 / 0.0; [L89] CALL, EXPR floor_double(x) [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L26] COND TRUE j0 < 20 [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; [L89] RET, EXPR floor_double(x) [L89] double res = floor_double(x); [L92] CALL, EXPR isnan_double(res) [L80] return x != x; [L92] RET, EXPR isnan_double(res) [L92] COND TRUE !isnan_double(res) [L93] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 52 SDslu, 5 SDs, 0 SdLazy, 58 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...