/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:13:47,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:13:47,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:13:47,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:13:47,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:13:47,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:13:47,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:13:47,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:13:47,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:13:47,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:13:47,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:13:47,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:13:47,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:13:47,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:13:47,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:13:47,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:13:47,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:13:47,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:13:47,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:13:47,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:13:47,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:13:47,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:13:47,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:13:47,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:13:47,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:13:47,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:13:47,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:13:47,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:13:47,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:13:47,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:13:47,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:13:47,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:13:47,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:13:47,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:13:47,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:13:47,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:13:47,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:13:47,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:13:47,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:13:47,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:13:47,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:13:47,868 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 [2020-08-18 16:13:47,890 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:13:47,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:13:47,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:13:47,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:13:47,892 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:13:47,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:13:47,892 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:13:47,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:13:47,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:13:47,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:13:47,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:13:47,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:13:47,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:13:47,894 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:13:47,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:13:47,894 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:13:47,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:13:47,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:13:47,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:13:47,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:13:47,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:13:47,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:13:47,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:13:47,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:13:47,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:13:47,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:13:47,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:13:47,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:13:47,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:13:47,897 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 [2020-08-18 16:13:48,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:13:48,229 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:13:48,235 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:13:48,236 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:13:48,237 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:13:48,238 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-18 16:13:48,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30e5b3ad2/72e19cf9ccb644b58d0f7e73e18fb5cd/FLAG3646a2210 [2020-08-18 16:13:48,764 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:13:48,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-18 16:13:48,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30e5b3ad2/72e19cf9ccb644b58d0f7e73e18fb5cd/FLAG3646a2210 [2020-08-18 16:13:49,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30e5b3ad2/72e19cf9ccb644b58d0f7e73e18fb5cd [2020-08-18 16:13:49,144 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:13:49,145 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:13:49,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:13:49,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:13:49,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:13:49,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:13:49" (1/1) ... [2020-08-18 16:13:49,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48c39f7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:49, skipping insertion in model container [2020-08-18 16:13:49,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:13:49" (1/1) ... [2020-08-18 16:13:49,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:13:49,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:13:49,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:13:49,371 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:13:49,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:13:49,424 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:13:49,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:49 WrapperNode [2020-08-18 16:13:49,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:13:49,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:13:49,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:13:49,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:13:49,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:49" (1/1) ... [2020-08-18 16:13:49,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:49" (1/1) ... [2020-08-18 16:13:49,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:49" (1/1) ... [2020-08-18 16:13:49,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:49" (1/1) ... [2020-08-18 16:13:49,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:49" (1/1) ... [2020-08-18 16:13:49,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:49" (1/1) ... [2020-08-18 16:13:49,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:49" (1/1) ... [2020-08-18 16:13:49,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:13:49,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:13:49,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:13:49,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:13:49,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:49" (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 [2020-08-18 16:13:49,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:13:49,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:13:49,628 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 16:13:49,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-18 16:13:49,629 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:13:49,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:13:49,629 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 16:13:49,629 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-18 16:13:49,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:13:49,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 16:13:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:13:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:13:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:13:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 16:13:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:13:49,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:13:49,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:13:50,031 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:13:50,031 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 16:13:50,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:13:50 BoogieIcfgContainer [2020-08-18 16:13:50,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:13:50,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:13:50,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:13:50,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:13:50,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:13:49" (1/3) ... [2020-08-18 16:13:50,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d29ed86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:13:50, skipping insertion in model container [2020-08-18 16:13:50,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:49" (2/3) ... [2020-08-18 16:13:50,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d29ed86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:13:50, skipping insertion in model container [2020-08-18 16:13:50,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:13:50" (3/3) ... [2020-08-18 16:13:50,043 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-08-18 16:13:50,052 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:13:50,059 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:13:50,072 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:13:50,094 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:13:50,095 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:13:50,095 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:13:50,095 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:13:50,095 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:13:50,095 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:13:50,095 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:13:50,096 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:13:50,123 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-18 16:13:50,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 16:13:50,129 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:13:50,129 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] [2020-08-18 16:13:50,130 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:13:50,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:13:50,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2020-08-18 16:13:50,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:13:50,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623407289] [2020-08-18 16:13:50,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:13:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:50,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:50,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:13:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:50,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:13:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:50,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:13:50,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623407289] [2020-08-18 16:13:50,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:13:50,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:13:50,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64812123] [2020-08-18 16:13:50,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:13:50,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:13:50,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:13:50,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:13:50,418 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-18 16:13:50,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:13:50,667 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-18 16:13:50,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:13:50,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-18 16:13:50,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:13:50,686 INFO L225 Difference]: With dead ends: 86 [2020-08-18 16:13:50,686 INFO L226 Difference]: Without dead ends: 43 [2020-08-18 16:13:50,691 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 [2020-08-18 16:13:50,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-18 16:13:50,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-18 16:13:50,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-18 16:13:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-18 16:13:50,740 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-18 16:13:50,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:13:50,742 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-18 16:13:50,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:13:50,742 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-18 16:13:50,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 16:13:50,744 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:13:50,744 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] [2020-08-18 16:13:50,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:13:50,745 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:13:50,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:13:50,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2020-08-18 16:13:50,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:13:50,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567137576] [2020-08-18 16:13:50,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:13:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:13:50,800 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:13:50,801 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:13:50,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:13:50,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:13:50 BoogieIcfgContainer [2020-08-18 16:13:50,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:13:50,849 INFO L168 Benchmark]: Toolchain (without parser) took 1701.92 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 100.6 MB in the beginning and 108.6 MB in the end (delta: -8.0 MB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. [2020-08-18 16:13:50,852 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 118.8 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-18 16:13:50,853 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.50 ms. Allocated memory is still 138.9 MB. Free memory was 100.2 MB in the beginning and 88.9 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-08-18 16:13:50,854 INFO L168 Benchmark]: Boogie Preprocessor took 130.03 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 88.9 MB in the beginning and 178.5 MB in the end (delta: -89.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-18 16:13:50,855 INFO L168 Benchmark]: RCFGBuilder took 478.77 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 156.1 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-18 16:13:50,856 INFO L168 Benchmark]: TraceAbstraction took 808.85 ms. Allocated memory is still 201.3 MB. Free memory was 156.1 MB in the beginning and 108.6 MB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. [2020-08-18 16:13:50,860 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 118.8 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 279.50 ms. Allocated memory is still 138.9 MB. Free memory was 100.2 MB in the beginning and 88.9 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.03 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 88.9 MB in the beginning and 178.5 MB in the end (delta: -89.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 478.77 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 156.1 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 808.85 ms. Allocated memory is still 201.3 MB. Free memory was 156.1 MB in the beginning and 108.6 MB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 95]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 41, overapproximation of bitwiseOr at line 42, overapproximation of someBinaryArithmeticDOUBLEoperation at line 90, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L90] double x = 0.0 / 0.0; [L91] CALL, EXPR ceil_double(x) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; [L91] RET, EXPR ceil_double(x) [L91] double res = ceil_double(x); [L94] CALL, EXPR isnan_double(res) [L15] return x != x; [L94] RET, EXPR isnan_double(res) [L94] COND TRUE !isnan_double(res) [L95] __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: 0.2s, 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...