/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=0.2 --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 03:47:57,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:47:57,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:47:57,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:47:57,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:47:57,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:47:57,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:47:57,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:47:57,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:47:57,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:47:57,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:47:57,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:47:57,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:47:57,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:47:57,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:47:57,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:47:57,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:47:57,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:47:57,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:47:57,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:47:57,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:47:57,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:47:57,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:47:57,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:47:57,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:47:57,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:47:57,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:47:57,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:47:57,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:47:57,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:47:57,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:47:57,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:47:57,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:47:57,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:47:57,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:47:57,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:47:57,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:47:57,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:47:57,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:47:57,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:47:57,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:47:57,167 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 03:47:57,197 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:47:57,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:47:57,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:47:57,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:47:57,202 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:47:57,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:47:57,202 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:47:57,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:47:57,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:47:57,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:47:57,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:47:57,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:47:57,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:47:57,205 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:47:57,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:47:57,206 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:47:57,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:47:57,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:47:57,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:47:57,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:47:57,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:47:57,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:47:57,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:47:57,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:47:57,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:47:57,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:47:57,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:47:57,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:47:57,208 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:47:57,208 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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-08-22 03:47:57,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:47:57,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:47:57,547 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:47:57,548 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:47:57,549 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:47:57,550 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-22 03:47:57,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69fa4e863/2bb885ba193346fe9d68ab5943f5604d/FLAG7a4d91230 [2020-08-22 03:47:58,119 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:47:58,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-22 03:47:58,127 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69fa4e863/2bb885ba193346fe9d68ab5943f5604d/FLAG7a4d91230 [2020-08-22 03:47:58,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69fa4e863/2bb885ba193346fe9d68ab5943f5604d [2020-08-22 03:47:58,487 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:47:58,489 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:47:58,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:47:58,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:47:58,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:47:58,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:47:58" (1/1) ... [2020-08-22 03:47:58,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f726e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:47:58, skipping insertion in model container [2020-08-22 03:47:58,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:47:58" (1/1) ... [2020-08-22 03:47:58,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:47:58,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:47:58,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:47:58,773 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:47:58,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:47:58,918 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:47:58,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:47:58 WrapperNode [2020-08-22 03:47:58,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:47:58,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:47:58,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:47:58,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:47:58,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:47:58" (1/1) ... [2020-08-22 03:47:58,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:47:58" (1/1) ... [2020-08-22 03:47:58,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:47:58" (1/1) ... [2020-08-22 03:47:58,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:47:58" (1/1) ... [2020-08-22 03:47:58,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:47:58" (1/1) ... [2020-08-22 03:47:58,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:47:58" (1/1) ... [2020-08-22 03:47:58,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:47:58" (1/1) ... [2020-08-22 03:47:58,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:47:58,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:47:58,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:47:58,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:47:58,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:47:58" (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 03:47:59,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:47:59,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:47:59,040 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-22 03:47:59,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 03:47:59,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:47:59,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:47:59,040 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-22 03:47:59,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:47:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 03:47:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:47:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:47:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:47:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 03:47:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 03:47:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:47:59,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:47:59,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:47:59,420 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:47:59,420 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 03:47:59,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:47:59 BoogieIcfgContainer [2020-08-22 03:47:59,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:47:59,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:47:59,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:47:59,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:47:59,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:47:58" (1/3) ... [2020-08-22 03:47:59,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24512075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:47:59, skipping insertion in model container [2020-08-22 03:47:59,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:47:58" (2/3) ... [2020-08-22 03:47:59,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24512075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:47:59, skipping insertion in model container [2020-08-22 03:47:59,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:47:59" (3/3) ... [2020-08-22 03:47:59,432 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-08-22 03:47:59,443 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:47:59,450 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:47:59,464 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:47:59,489 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:47:59,489 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:47:59,489 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:47:59,489 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:47:59,489 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:47:59,490 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:47:59,490 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:47:59,490 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:47:59,505 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-22 03:47:59,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 03:47:59,512 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:47:59,513 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 03:47:59,514 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:47:59,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:47:59,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2020-08-22 03:47:59,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:47:59,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667812844] [2020-08-22 03:47:59,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:47:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:59,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:59,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:47:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:59,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:47:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:59,790 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 03:47:59,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667812844] [2020-08-22 03:47:59,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:47:59,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:47:59,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280617823] [2020-08-22 03:47:59,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:47:59,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:47:59,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:47:59,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:47:59,816 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-22 03:48:00,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:48:00,106 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-22 03:48:00,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 03:48:00,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-22 03:48:00,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:48:00,130 INFO L225 Difference]: With dead ends: 86 [2020-08-22 03:48:00,130 INFO L226 Difference]: Without dead ends: 43 [2020-08-22 03:48:00,135 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 03:48:00,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-22 03:48:00,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-22 03:48:00,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-22 03:48:00,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-22 03:48:00,185 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-22 03:48:00,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:48:00,185 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-22 03:48:00,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:48:00,186 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-22 03:48:00,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 03:48:00,188 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:48:00,188 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 03:48:00,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:48:00,189 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:48:00,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:48:00,189 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2020-08-22 03:48:00,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:48:00,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076650709] [2020-08-22 03:48:00,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:48:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 03:48:00,240 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 03:48:00,241 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 03:48:00,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:48:00,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 03:48:00 BoogieIcfgContainer [2020-08-22 03:48:00,265 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 03:48:00,269 INFO L168 Benchmark]: Toolchain (without parser) took 1778.51 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 102.1 MB in the beginning and 106.5 MB in the end (delta: -4.4 MB). Peak memory consumption was 57.5 MB. Max. memory is 7.1 GB. [2020-08-22 03:48:00,270 INFO L168 Benchmark]: CDTParser took 0.73 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-22 03:48:00,271 INFO L168 Benchmark]: CACSL2BoogieTranslator took 429.55 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 101.6 MB in the beginning and 179.9 MB in the end (delta: -78.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-08-22 03:48:00,272 INFO L168 Benchmark]: Boogie Preprocessor took 53.55 ms. Allocated memory is still 201.3 MB. Free memory was 179.9 MB in the beginning and 177.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-22 03:48:00,273 INFO L168 Benchmark]: RCFGBuilder took 450.71 ms. Allocated memory is still 201.3 MB. Free memory was 176.6 MB in the beginning and 154.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-08-22 03:48:00,274 INFO L168 Benchmark]: TraceAbstraction took 839.53 ms. Allocated memory is still 201.3 MB. Free memory was 154.8 MB in the beginning and 106.5 MB in the end (delta: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2020-08-22 03:48:00,279 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 429.55 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 101.6 MB in the beginning and 179.9 MB in the end (delta: -78.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.55 ms. Allocated memory is still 201.3 MB. Free memory was 179.9 MB in the beginning and 177.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 450.71 ms. Allocated memory is still 201.3 MB. Free memory was 176.6 MB in the beginning and 154.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 839.53 ms. Allocated memory is still 201.3 MB. Free memory was 154.8 MB in the beginning and 106.5 MB in the end (delta: 48.4 MB). Peak memory consumption was 48.4 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: 0.7s, 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, 0.1s 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...