/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:16:45,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:16:45,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:16:45,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:16:45,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:16:45,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:16:45,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:16:45,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:16:45,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:16:45,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:16:45,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:16:45,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:16:45,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:16:45,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:16:45,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:16:45,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:16:45,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:16:45,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:16:45,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:16:45,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:16:45,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:16:45,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:16:45,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:16:45,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:16:45,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:16:45,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:16:45,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:16:45,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:16:45,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:16:45,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:16:45,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:16:45,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:16:45,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:16:45,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:16:45,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:16:45,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:16:45,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:16:45,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:16:45,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:16:45,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:16:45,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:16:45,790 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 [2020-09-21 10:16:45,818 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:16:45,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:16:45,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:16:45,820 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:16:45,821 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:16:45,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:16:45,821 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:16:45,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:16:45,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:16:45,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:16:45,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:16:45,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:16:45,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:16:45,822 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:16:45,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:16:45,823 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:16:45,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:16:45,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:16:45,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:16:45,824 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:16:45,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:16:45,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:16:45,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:16:45,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:16:45,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:16:45,825 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:16:45,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:16:45,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:16:45,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:16:45,826 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 -> false [2020-09-21 10:16:46,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:16:46,401 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:16:46,405 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:16:46,407 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:16:46,408 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:16:46,409 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-09-21 10:16:46,502 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a912d455/2d2fdc71082b4711ae0148cd4ec90501/FLAG6d29d9e1a [2020-09-21 10:16:47,100 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:16:47,103 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-09-21 10:16:47,116 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a912d455/2d2fdc71082b4711ae0148cd4ec90501/FLAG6d29d9e1a [2020-09-21 10:16:47,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a912d455/2d2fdc71082b4711ae0148cd4ec90501 [2020-09-21 10:16:47,418 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:16:47,423 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:16:47,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:16:47,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:16:47,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:16:47,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:16:47" (1/1) ... [2020-09-21 10:16:47,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25989b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:47, skipping insertion in model container [2020-09-21 10:16:47,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:16:47" (1/1) ... [2020-09-21 10:16:47,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:16:47,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:16:47,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:16:47,788 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:16:47,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:16:47,951 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:16:47,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:47 WrapperNode [2020-09-21 10:16:47,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:16:47,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:16:47,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:16:47,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:16:47,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:47" (1/1) ... [2020-09-21 10:16:47,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:47" (1/1) ... [2020-09-21 10:16:47,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:47" (1/1) ... [2020-09-21 10:16:47,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:47" (1/1) ... [2020-09-21 10:16:48,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:47" (1/1) ... [2020-09-21 10:16:48,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:47" (1/1) ... [2020-09-21 10:16:48,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:47" (1/1) ... [2020-09-21 10:16:48,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:16:48,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:16:48,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:16:48,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:16:48,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:47" (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 [2020-09-21 10:16:48,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:16:48,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:16:48,116 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-21 10:16:48,117 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-21 10:16:48,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-21 10:16:48,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:16:48,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:16:48,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-21 10:16:48,118 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-21 10:16:48,118 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-21 10:16:48,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:16:48,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 10:16:48,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:16:48,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:16:48,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 10:16:48,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:16:48,119 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-21 10:16:48,119 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:16:48,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:16:48,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-21 10:16:48,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:16:48,803 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:16:48,804 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-21 10:16:48,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:16:48 BoogieIcfgContainer [2020-09-21 10:16:48,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:16:48,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:16:48,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:16:48,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:16:48,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:16:47" (1/3) ... [2020-09-21 10:16:48,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5640b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:16:48, skipping insertion in model container [2020-09-21 10:16:48,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:47" (2/3) ... [2020-09-21 10:16:48,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5640b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:16:48, skipping insertion in model container [2020-09-21 10:16:48,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:16:48" (3/3) ... [2020-09-21 10:16:48,827 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-09-21 10:16:48,840 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:16:48,855 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:16:48,879 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:16:48,907 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:16:48,908 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:16:48,908 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:16:48,908 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:16:48,908 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:16:48,908 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:16:48,908 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:16:48,909 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:16:48,932 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-21 10:16:48,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 10:16:48,941 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:16:48,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:16:48,943 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:16:48,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:16:48,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-09-21 10:16:48,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:16:48,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63072102] [2020-09-21 10:16:48,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:16:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:49,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:16:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:49,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:16:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:16:49,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63072102] [2020-09-21 10:16:49,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:16:49,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:16:49,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460611756] [2020-09-21 10:16:49,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:16:49,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:16:49,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:16:49,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:16:49,295 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-09-21 10:16:49,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:16:49,711 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-09-21 10:16:49,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:16:49,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-09-21 10:16:49,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:16:49,728 INFO L225 Difference]: With dead ends: 142 [2020-09-21 10:16:49,729 INFO L226 Difference]: Without dead ends: 69 [2020-09-21 10:16:49,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:16:49,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-21 10:16:49,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-09-21 10:16:49,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-21 10:16:49,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-09-21 10:16:49,811 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-09-21 10:16:49,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:16:49,811 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-09-21 10:16:49,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:16:49,812 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-09-21 10:16:49,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 10:16:49,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:16:49,813 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] [2020-09-21 10:16:49,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:16:49,814 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:16:49,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:16:49,815 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-09-21 10:16:49,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:16:49,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57590601] [2020-09-21 10:16:49,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:16:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:16:49,892 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:16:49,892 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:16:49,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:16:49,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:16:49 BoogieIcfgContainer [2020-09-21 10:16:49,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:16:49,923 INFO L168 Benchmark]: Toolchain (without parser) took 2501.94 ms. Allocated memory was 137.9 MB in the beginning and 231.2 MB in the end (delta: 93.3 MB). Free memory was 101.0 MB in the beginning and 192.8 MB in the end (delta: -91.8 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:49,925 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 10:16:49,926 INFO L168 Benchmark]: CACSL2BoogieTranslator took 528.28 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 100.6 MB in the beginning and 175.9 MB in the end (delta: -75.3 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:49,927 INFO L168 Benchmark]: Boogie Preprocessor took 85.21 ms. Allocated memory is still 200.8 MB. Free memory was 175.9 MB in the beginning and 172.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:49,927 INFO L168 Benchmark]: RCFGBuilder took 775.65 ms. Allocated memory is still 200.8 MB. Free memory was 172.7 MB in the beginning and 137.1 MB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:49,929 INFO L168 Benchmark]: TraceAbstraction took 1103.57 ms. Allocated memory was 200.8 MB in the beginning and 231.2 MB in the end (delta: 30.4 MB). Free memory was 136.4 MB in the beginning and 192.8 MB in the end (delta: -56.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 10:16:49,933 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 528.28 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 100.6 MB in the beginning and 175.9 MB in the end (delta: -75.3 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.21 ms. Allocated memory is still 200.8 MB. Free memory was 175.9 MB in the beginning and 172.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 775.65 ms. Allocated memory is still 200.8 MB. Free memory was 172.7 MB in the beginning and 137.1 MB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1103.57 ms. Allocated memory was 200.8 MB in the beginning and 231.2 MB in the end (delta: 30.4 MB). Free memory was 136.4 MB in the beginning and 192.8 MB in the end (delta: -56.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L187] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L187] RET, EXPR fmod_double(x, y) [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 14 SDslu, 85 SDs, 0 SdLazy, 104 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 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...