java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:30:20,750 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:30:20,752 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:30:20,766 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:30:20,766 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:30:20,767 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:30:20,768 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:30:20,770 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:30:20,772 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:30:20,773 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:30:20,773 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:30:20,774 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:30:20,775 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:30:20,776 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:30:20,777 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:30:20,778 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:30:20,778 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:30:20,780 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:30:20,782 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:30:20,784 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:30:20,785 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:30:20,786 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:30:20,789 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:30:20,797 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:30:20,823 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:30:20,824 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:30:20,827 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:30:20,828 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:30:20,828 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:30:20,828 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:30:20,828 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:30:20,828 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:30:20,829 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:30:20,829 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:30:20,829 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:30:20,829 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:30:20,830 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:30:20,830 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:30:20,831 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:30:20,831 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:30:20,831 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:30:20,831 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:30:20,832 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:30:20,833 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:30:20,833 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:30:20,833 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:30:20,833 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:30:20,833 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:30:20,834 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:30:20,834 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:30:20,834 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:30:20,834 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:30:20,834 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:30:20,835 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:30:20,835 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:30:20,835 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:30:20,836 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:30:20,836 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:30:20,907 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:30:20,919 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:30:20,923 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:30:20,925 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:30:20,925 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:30:20,926 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label18_true-unreach-call.c [2018-10-24 21:30:20,988 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/728fe993b/0fba9acd19fe4e728e3c1a4796a9be48/FLAG3c9414a52 [2018-10-24 21:30:21,781 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:30:21,783 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label18_true-unreach-call.c [2018-10-24 21:30:21,828 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/728fe993b/0fba9acd19fe4e728e3c1a4796a9be48/FLAG3c9414a52 [2018-10-24 21:30:21,849 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/728fe993b/0fba9acd19fe4e728e3c1a4796a9be48 [2018-10-24 21:30:21,862 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:30:21,864 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:30:21,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:30:21,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:30:21,870 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:30:21,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:30:21" (1/1) ... [2018-10-24 21:30:21,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d7077a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:21, skipping insertion in model container [2018-10-24 21:30:21,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:30:21" (1/1) ... [2018-10-24 21:30:21,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:30:22,066 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:30:23,521 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:30:23,532 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:30:24,274 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:30:24,313 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:30:24,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:24 WrapperNode [2018-10-24 21:30:24,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:30:24,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:30:24,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:30:24,315 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:30:24,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:24" (1/1) ... [2018-10-24 21:30:24,422 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:24" (1/1) ... [2018-10-24 21:30:24,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:30:24,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:30:24,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:30:24,900 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:30:24,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:24" (1/1) ... [2018-10-24 21:30:24,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:24" (1/1) ... [2018-10-24 21:30:24,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:24" (1/1) ... [2018-10-24 21:30:24,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:24" (1/1) ... [2018-10-24 21:30:25,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:24" (1/1) ... [2018-10-24 21:30:25,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:24" (1/1) ... [2018-10-24 21:30:25,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:24" (1/1) ... [2018-10-24 21:30:25,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:30:25,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:30:25,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:30:25,172 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:30:25,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 21:30:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:30:25,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:30:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:30:25,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:30:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:30:25,247 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:30:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:30:25,247 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:30:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:30:25,247 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:30:25,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:30:25,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:30:25,248 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:30:25,249 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:30:36,761 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:30:36,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:30:36 BoogieIcfgContainer [2018-10-24 21:30:36,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:30:36,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:30:36,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:30:36,767 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:30:36,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:30:21" (1/3) ... [2018-10-24 21:30:36,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6935a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:30:36, skipping insertion in model container [2018-10-24 21:30:36,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:24" (2/3) ... [2018-10-24 21:30:36,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6935a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:30:36, skipping insertion in model container [2018-10-24 21:30:36,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:30:36" (3/3) ... [2018-10-24 21:30:36,771 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label18_true-unreach-call.c [2018-10-24 21:30:36,782 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:30:36,793 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:30:36,812 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:30:36,864 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:30:36,864 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:30:36,864 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:30:36,864 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:30:36,864 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:30:36,865 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:30:36,865 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:30:36,865 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:30:36,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 21:30:36,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-24 21:30:36,943 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:30:36,944 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:30:36,947 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:30:36,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:30:36,955 INFO L82 PathProgramCache]: Analyzing trace with hash -856257052, now seen corresponding path program 1 times [2018-10-24 21:30:36,958 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:30:37,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:30:37,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:30:37,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:30:37,018 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:30:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:30:37,480 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:30:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:30:37,600 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:30:37,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:30:37,601 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:30:37,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:30:37,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:30:37,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:30:37,627 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-24 21:30:46,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:30:46,603 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-10-24 21:30:46,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:30:46,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2018-10-24 21:30:46,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:30:46,642 INFO L225 Difference]: With dead ends: 3097 [2018-10-24 21:30:46,642 INFO L226 Difference]: Without dead ends: 1975 [2018-10-24 21:30:46,657 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:30:46,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-10-24 21:30:46,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-10-24 21:30:46,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-10-24 21:30:46,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-10-24 21:30:46,833 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 70 [2018-10-24 21:30:46,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:30:46,834 INFO L481 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-10-24 21:30:46,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:30:46,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-10-24 21:30:46,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-24 21:30:46,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:30:46,847 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:30:46,847 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:30:46,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:30:46,847 INFO L82 PathProgramCache]: Analyzing trace with hash -410471564, now seen corresponding path program 1 times [2018-10-24 21:30:46,848 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:30:46,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:30:46,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:30:46,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:30:46,851 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:30:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:30:47,146 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:30:47,147 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:30:47,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:30:47,147 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:30:47,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:30:47,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:30:47,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:30:47,151 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-10-24 21:31:07,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:31:07,437 INFO L93 Difference]: Finished difference Result 5736 states and 9691 transitions. [2018-10-24 21:31:07,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:31:07,448 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-10-24 21:31:07,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:31:07,482 INFO L225 Difference]: With dead ends: 5736 [2018-10-24 21:31:07,482 INFO L226 Difference]: Without dead ends: 3768 [2018-10-24 21:31:07,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:31:07,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2018-10-24 21:31:07,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3686. [2018-10-24 21:31:07,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3686 states. [2018-10-24 21:31:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 5660 transitions. [2018-10-24 21:31:07,607 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 5660 transitions. Word has length 146 [2018-10-24 21:31:07,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:31:07,608 INFO L481 AbstractCegarLoop]: Abstraction has 3686 states and 5660 transitions. [2018-10-24 21:31:07,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:31:07,608 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 5660 transitions. [2018-10-24 21:31:07,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-24 21:31:07,614 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:31:07,615 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:31:07,615 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:31:07,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:31:07,615 INFO L82 PathProgramCache]: Analyzing trace with hash 586688088, now seen corresponding path program 1 times [2018-10-24 21:31:07,616 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:31:07,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:07,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:31:07,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:07,617 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:31:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:31:07,978 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:31:07,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:31:07,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:31:07,979 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:31:07,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:31:07,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:31:07,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:31:07,983 INFO L87 Difference]: Start difference. First operand 3686 states and 5660 transitions. Second operand 5 states. [2018-10-24 21:31:35,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:31:35,121 INFO L93 Difference]: Finished difference Result 13666 states and 21764 transitions. [2018-10-24 21:31:35,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:31:35,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2018-10-24 21:31:35,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:31:35,182 INFO L225 Difference]: With dead ends: 13666 [2018-10-24 21:31:35,182 INFO L226 Difference]: Without dead ends: 9986 [2018-10-24 21:31:35,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:31:35,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9986 states. [2018-10-24 21:31:35,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9986 to 9796. [2018-10-24 21:31:35,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9796 states. [2018-10-24 21:31:35,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9796 states to 9796 states and 14504 transitions. [2018-10-24 21:31:35,482 INFO L78 Accepts]: Start accepts. Automaton has 9796 states and 14504 transitions. Word has length 160 [2018-10-24 21:31:35,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:31:35,483 INFO L481 AbstractCegarLoop]: Abstraction has 9796 states and 14504 transitions. [2018-10-24 21:31:35,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:31:35,483 INFO L276 IsEmpty]: Start isEmpty. Operand 9796 states and 14504 transitions. [2018-10-24 21:31:35,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-24 21:31:35,493 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:31:35,493 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2018-10-24 21:31:35,494 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:31:35,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:31:35,494 INFO L82 PathProgramCache]: Analyzing trace with hash 154081844, now seen corresponding path program 1 times [2018-10-24 21:31:35,494 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:31:35,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:35,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:31:35,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:35,496 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:31:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:31:35,809 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:31:35,890 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:31:35,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:31:35,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:31:35,891 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:31:35,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:31:35,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:31:35,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:31:35,893 INFO L87 Difference]: Start difference. First operand 9796 states and 14504 transitions. Second operand 6 states. [2018-10-24 21:31:50,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:31:50,939 INFO L93 Difference]: Finished difference Result 34193 states and 53815 transitions. [2018-10-24 21:31:50,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:31:50,951 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2018-10-24 21:31:50,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:31:51,064 INFO L225 Difference]: With dead ends: 34193 [2018-10-24 21:31:51,064 INFO L226 Difference]: Without dead ends: 24403 [2018-10-24 21:31:51,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:31:51,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24403 states. [2018-10-24 21:31:51,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24403 to 24170. [2018-10-24 21:31:51,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24170 states. [2018-10-24 21:31:51,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24170 states to 24170 states and 34075 transitions. [2018-10-24 21:31:51,708 INFO L78 Accepts]: Start accepts. Automaton has 24170 states and 34075 transitions. Word has length 178 [2018-10-24 21:31:51,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:31:51,708 INFO L481 AbstractCegarLoop]: Abstraction has 24170 states and 34075 transitions. [2018-10-24 21:31:51,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:31:51,709 INFO L276 IsEmpty]: Start isEmpty. Operand 24170 states and 34075 transitions. [2018-10-24 21:31:51,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-24 21:31:51,717 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:31:51,718 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:31:51,718 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:31:51,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:31:51,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1234851793, now seen corresponding path program 1 times [2018-10-24 21:31:51,719 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:31:51,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:51,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:31:51,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:51,720 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:31:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:31:51,995 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:31:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:31:52,322 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:31:52,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:31:52,323 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:31:52,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:31:52,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:31:52,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:31:52,324 INFO L87 Difference]: Start difference. First operand 24170 states and 34075 transitions. Second operand 6 states. [2018-10-24 21:32:03,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:32:03,933 INFO L93 Difference]: Finished difference Result 62339 states and 97863 transitions. [2018-10-24 21:32:03,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:32:03,941 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2018-10-24 21:32:03,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:32:04,120 INFO L225 Difference]: With dead ends: 62339 [2018-10-24 21:32:04,120 INFO L226 Difference]: Without dead ends: 38175 [2018-10-24 21:32:04,174 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:32:04,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38175 states. [2018-10-24 21:32:04,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38175 to 37978. [2018-10-24 21:32:04,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37978 states. [2018-10-24 21:32:05,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37978 states to 37978 states and 54437 transitions. [2018-10-24 21:32:05,036 INFO L78 Accepts]: Start accepts. Automaton has 37978 states and 54437 transitions. Word has length 189 [2018-10-24 21:32:05,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:32:05,037 INFO L481 AbstractCegarLoop]: Abstraction has 37978 states and 54437 transitions. [2018-10-24 21:32:05,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:32:05,037 INFO L276 IsEmpty]: Start isEmpty. Operand 37978 states and 54437 transitions. [2018-10-24 21:32:05,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-24 21:32:05,045 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:32:05,046 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2018-10-24 21:32:05,046 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:32:05,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:32:05,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1204068448, now seen corresponding path program 1 times [2018-10-24 21:32:05,047 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:32:05,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:05,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:32:05,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:05,048 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:32:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:32:05,351 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:32:05,755 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:32:05,755 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:32:05,756 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:32:05,756 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:32:05,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:32:05,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:32:05,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:32:05,757 INFO L87 Difference]: Start difference. First operand 37978 states and 54437 transitions. Second operand 6 states. [2018-10-24 21:32:14,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:32:14,273 INFO L93 Difference]: Finished difference Result 83934 states and 123833 transitions. [2018-10-24 21:32:14,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:32:14,273 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 217 [2018-10-24 21:32:14,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:32:14,437 INFO L225 Difference]: With dead ends: 83934 [2018-10-24 21:32:14,437 INFO L226 Difference]: Without dead ends: 45962 [2018-10-24 21:32:14,520 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:32:14,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45962 states. [2018-10-24 21:32:15,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45962 to 45860. [2018-10-24 21:32:15,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45860 states. [2018-10-24 21:32:15,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45860 states to 45860 states and 62659 transitions. [2018-10-24 21:32:15,360 INFO L78 Accepts]: Start accepts. Automaton has 45860 states and 62659 transitions. Word has length 217 [2018-10-24 21:32:15,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:32:15,361 INFO L481 AbstractCegarLoop]: Abstraction has 45860 states and 62659 transitions. [2018-10-24 21:32:15,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:32:15,361 INFO L276 IsEmpty]: Start isEmpty. Operand 45860 states and 62659 transitions. [2018-10-24 21:32:15,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-10-24 21:32:15,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:32:15,377 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2018-10-24 21:32:15,378 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:32:15,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:32:15,378 INFO L82 PathProgramCache]: Analyzing trace with hash 171861938, now seen corresponding path program 1 times [2018-10-24 21:32:15,378 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:32:15,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:15,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:32:15,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:15,380 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:32:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:32:15,711 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:32:15,711 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:32:15,711 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:32:15,712 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 268 with the following transitions: [2018-10-24 21:32:15,714 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3059], [3067], [3075], [3083], [3087], [3089], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 21:32:15,791 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:32:15,792 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:32:22,676 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:32:22,677 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 21:32:22,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:32:22,691 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:32:26,965 INFO L232 lantSequenceWeakener]: Weakened 244 states. On average, predicates are now at 71.93% of their original sizes. [2018-10-24 21:32:26,965 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:32:28,431 INFO L413 sIntCurrentIteration]: We have 266 unified AI predicates [2018-10-24 21:32:28,432 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:32:28,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:32:28,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-10-24 21:32:28,433 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:32:28,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 21:32:28,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 21:32:28,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 21:32:28,434 INFO L87 Difference]: Start difference. First operand 45860 states and 62659 transitions. Second operand 11 states. [2018-10-24 21:33:01,978 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 21:34:12,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 21:34:12,459 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:34:12,464 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:34:12,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:34:12 BoogieIcfgContainer [2018-10-24 21:34:12,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:34:12,468 INFO L168 Benchmark]: Toolchain (without parser) took 230602.84 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 900.5 MB. Max. memory is 7.1 GB. [2018-10-24 21:34:12,469 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:34:12,470 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2448.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:34:12,476 INFO L168 Benchmark]: Boogie Procedure Inliner took 585.18 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 832.6 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:34:12,477 INFO L168 Benchmark]: Boogie Preprocessor took 271.63 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:34:12,478 INFO L168 Benchmark]: RCFGBuilder took 11590.32 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 185.1 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 18.3 MB). Peak memory consumption was 668.5 MB. Max. memory is 7.1 GB. [2018-10-24 21:34:12,480 INFO L168 Benchmark]: TraceAbstraction took 215701.57 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 685.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:34:12,489 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 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2448.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 585.18 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 832.6 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 271.63 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11590.32 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 185.1 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 18.3 MB). Peak memory consumption was 668.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215701.57 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 685.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 201]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 201). Cancelled while BasicCegarLoop was constructing difference of abstraction (45860states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (2386 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 215.6s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 196.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2992 SDtfs, 21399 SDslu, 3295 SDs, 0 SdLazy, 34493 SolverSat, 8106 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 147.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 323 GetRequests, 271 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45860occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9965066512434932 AbsIntWeakeningRatio, 0.11278195488721804 AbsIntAvgWeakeningVarsNumRemoved, 23.394736842105264 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 6 MinimizatonAttempts, 805 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1227 NumberOfCodeBlocks, 1227 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1220 ConstructedInterpolants, 0 QuantifiedInterpolants, 757932 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 515/517 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown