/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:53:44,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:53:44,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:53:44,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:53:44,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:53:44,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:53:44,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:53:44,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:53:44,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:53:44,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:53:44,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:53:44,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:53:44,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:53:44,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:53:44,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:53:44,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:53:44,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:53:44,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:53:44,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:53:44,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:53:44,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:53:44,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:53:44,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:53:44,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:53:44,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 14:53:44,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 14:53:44,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 14:53:44,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 14:53:44,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 14:53:44,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 14:53:44,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 14:53:44,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 14:53:44,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 14:53:44,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:53:44,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:53:44,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:53:44,651 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 [2020-09-24 14:53:44,696 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:53:44,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:53:44,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:53:44,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:53:44,699 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:53:44,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:53:44,700 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:53:44,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:53:44,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:53:44,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:53:44,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:53:44,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:53:44,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:53:44,702 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:53:44,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:53:44,703 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:53:44,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:53:44,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:53:44,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:53:44,704 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:53:44,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:53:44,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:53:44,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:53:44,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:53:44,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:53:44,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:53:44,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:53:44,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:53:44,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:53:44,706 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:53:45,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:53:45,439 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:53:45,444 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:53:45,446 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:53:45,448 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:53:45,450 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-09-24 14:53:45,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6af998044/390555e86e1b4043b9591a2ea2abf2c6/FLAG9c20b3fc1 [2020-09-24 14:53:46,126 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:53:46,127 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-09-24 14:53:46,137 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6af998044/390555e86e1b4043b9591a2ea2abf2c6/FLAG9c20b3fc1 [2020-09-24 14:53:46,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6af998044/390555e86e1b4043b9591a2ea2abf2c6 [2020-09-24 14:53:46,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:53:46,482 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:53:46,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:53:46,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:53:46,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:53:46,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:53:46" (1/1) ... [2020-09-24 14:53:46,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f17c274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:46, skipping insertion in model container [2020-09-24 14:53:46,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:53:46" (1/1) ... [2020-09-24 14:53:46,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:53:46,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:53:46,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:53:46,787 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:53:46,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:53:46,963 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:53:46,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:46 WrapperNode [2020-09-24 14:53:46,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:53:46,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:53:46,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:53:46,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:53:46,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:46" (1/1) ... [2020-09-24 14:53:46,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:46" (1/1) ... [2020-09-24 14:53:46,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:46" (1/1) ... [2020-09-24 14:53:46,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:46" (1/1) ... [2020-09-24 14:53:47,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:46" (1/1) ... [2020-09-24 14:53:47,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:46" (1/1) ... [2020-09-24 14:53:47,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:46" (1/1) ... [2020-09-24 14:53:47,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:53:47,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:53:47,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:53:47,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:53:47,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:46" (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 [2020-09-24 14:53:47,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:53:47,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:53:47,098 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-09-24 14:53:47,098 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-24 14:53:47,098 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:53:47,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:53:47,098 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-09-24 14:53:47,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:53:47,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 14:53:47,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:53:47,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:53:47,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:53:47,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 14:53:47,100 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-24 14:53:47,100 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:53:47,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:53:47,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:53:47,613 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:53:47,613 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 14:53:47,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:53:47 BoogieIcfgContainer [2020-09-24 14:53:47,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:53:47,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:53:47,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:53:47,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:53:47,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:53:46" (1/3) ... [2020-09-24 14:53:47,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c37df9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:53:47, skipping insertion in model container [2020-09-24 14:53:47,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:46" (2/3) ... [2020-09-24 14:53:47,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c37df9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:53:47, skipping insertion in model container [2020-09-24 14:53:47,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:53:47" (3/3) ... [2020-09-24 14:53:47,638 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-09-24 14:53:47,650 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:53:47,661 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:53:47,683 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:53:47,712 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:53:47,713 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:53:47,713 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:53:47,713 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:53:47,713 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:53:47,713 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:53:47,713 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:53:47,713 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:53:47,738 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-09-24 14:53:47,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 14:53:47,747 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:53:47,749 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:53:47,749 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:53:47,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:53:47,756 INFO L82 PathProgramCache]: Analyzing trace with hash -911557548, now seen corresponding path program 1 times [2020-09-24 14:53:47,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:53:47,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314901549] [2020-09-24 14:53:47,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:53:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:47,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:53:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:48,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 14:53:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:48,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:53:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:53:48,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314901549] [2020-09-24 14:53:48,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:53:48,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:53:48,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629658406] [2020-09-24 14:53:48,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:53:48,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:53:48,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:53:48,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:53:48,097 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 4 states. [2020-09-24 14:53:48,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:53:48,403 INFO L93 Difference]: Finished difference Result 181 states and 219 transitions. [2020-09-24 14:53:48,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 14:53:48,406 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-09-24 14:53:48,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:53:48,424 INFO L225 Difference]: With dead ends: 181 [2020-09-24 14:53:48,424 INFO L226 Difference]: Without dead ends: 92 [2020-09-24 14:53:48,429 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 [2020-09-24 14:53:48,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-24 14:53:48,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-09-24 14:53:48,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-24 14:53:48,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions. [2020-09-24 14:53:48,495 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 35 [2020-09-24 14:53:48,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:53:48,496 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions. [2020-09-24 14:53:48,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:53:48,497 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions. [2020-09-24 14:53:48,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 14:53:48,503 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:53:48,503 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:53:48,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:53:48,504 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:53:48,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:53:48,505 INFO L82 PathProgramCache]: Analyzing trace with hash 2058435850, now seen corresponding path program 1 times [2020-09-24 14:53:48,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:53:48,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329155682] [2020-09-24 14:53:48,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:53:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 14:53:48,606 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 14:53:48,607 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 14:53:48,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:53:48,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:53:48 BoogieIcfgContainer [2020-09-24 14:53:48,640 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:53:48,644 INFO L168 Benchmark]: Toolchain (without parser) took 2163.18 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 103.3 MB in the beginning and 95.5 MB in the end (delta: 7.8 MB). Peak memory consumption was 63.9 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:48,645 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 14:53:48,646 INFO L168 Benchmark]: CACSL2BoogieTranslator took 481.34 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 102.6 MB in the beginning and 181.3 MB in the end (delta: -78.6 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:48,648 INFO L168 Benchmark]: Boogie Preprocessor took 55.77 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 179.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:48,649 INFO L168 Benchmark]: RCFGBuilder took 604.37 ms. Allocated memory is still 203.9 MB. Free memory was 179.3 MB in the beginning and 153.2 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:48,650 INFO L168 Benchmark]: TraceAbstraction took 1012.98 ms. Allocated memory is still 203.9 MB. Free memory was 152.5 MB in the beginning and 95.5 MB in the end (delta: 57.0 MB). Peak memory consumption was 57.0 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:48,654 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 481.34 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 102.6 MB in the beginning and 181.3 MB in the end (delta: -78.6 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.77 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 179.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 604.37 ms. Allocated memory is still 203.9 MB. Free memory was 179.3 MB in the beginning and 153.2 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1012.98 ms. Allocated memory is still 203.9 MB. Free memory was 152.5 MB in the beginning and 95.5 MB in the end (delta: 57.0 MB). Peak memory consumption was 57.0 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 someBinaryDOUBLEComparisonOperation at line 80, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 25. 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 FALSE !(j0 < 20) [L47] COND TRUE j0 > 51 [L48] COND TRUE j0 == 0x400 [L49] return x + 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, 99 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 110 SDtfs, 21 SDslu, 82 SDs, 0 SdLazy, 115 SolverSat, 6 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=99occurred 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, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 1972 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...