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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:54:47,376 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:54:47,379 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:54:47,398 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:54:47,398 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:54:47,399 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:54:47,401 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:54:47,403 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:54:47,405 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:54:47,407 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:54:47,410 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:54:47,410 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:54:47,411 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:54:47,414 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:54:47,421 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:54:47,422 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:54:47,423 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:54:47,428 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:54:47,431 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:54:47,433 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:54:47,435 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:54:47,437 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:54:47,440 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 01:54:47,453 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 01:54:47,470 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:54:47,471 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:54:47,472 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:54:47,473 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:54:47,473 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:54:47,473 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:54:47,473 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:54:47,474 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:54:47,474 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:54:47,474 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:54:47,474 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:54:47,474 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:54:47,475 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:54:47,475 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:54:47,475 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:54:47,476 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:54:47,476 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:54:47,476 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:54:47,476 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:54:47,476 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:54:47,476 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:54:47,478 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:54:47,478 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:54:47,478 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:54:47,478 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:54:47,478 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:54:47,479 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:54:47,479 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:54:47,479 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:54:47,479 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:54:47,479 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:54:47,479 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:54:47,480 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:54:47,480 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:54:47,480 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:54:47,480 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:54:47,536 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:54:47,550 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:54:47,554 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:54:47,555 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:54:47,556 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:54:47,557 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label01_true-unreach-call.c [2018-10-25 01:54:47,622 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/90a1e5d72/640c5ee26edf49e8bb9de4ccb8d496e8/FLAG98bcaff7e [2018-10-25 01:54:48,389 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:54:48,390 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label01_true-unreach-call.c [2018-10-25 01:54:48,417 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/90a1e5d72/640c5ee26edf49e8bb9de4ccb8d496e8/FLAG98bcaff7e [2018-10-25 01:54:48,440 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/90a1e5d72/640c5ee26edf49e8bb9de4ccb8d496e8 [2018-10-25 01:54:48,453 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:54:48,455 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:54:48,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:54:48,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:54:48,462 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:54:48,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:54:48" (1/1) ... [2018-10-25 01:54:48,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26998074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:48, skipping insertion in model container [2018-10-25 01:54:48,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:54:48" (1/1) ... [2018-10-25 01:54:48,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:54:48,607 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:54:49,660 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:54:49,665 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:54:50,042 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:54:50,064 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:54:50,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50 WrapperNode [2018-10-25 01:54:50,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:54:50,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:54:50,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:54:50,067 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:54:50,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50" (1/1) ... [2018-10-25 01:54:50,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50" (1/1) ... [2018-10-25 01:54:50,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:54:50,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:54:50,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:54:50,554 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:54:50,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50" (1/1) ... [2018-10-25 01:54:50,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50" (1/1) ... [2018-10-25 01:54:50,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50" (1/1) ... [2018-10-25 01:54:50,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50" (1/1) ... [2018-10-25 01:54:50,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50" (1/1) ... [2018-10-25 01:54:50,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50" (1/1) ... [2018-10-25 01:54:50,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50" (1/1) ... [2018-10-25 01:54:50,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:54:50,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:54:50,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:54:50,785 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:54:50,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50" (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 [2018-10-25 01:54:50,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:54:50,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:54:50,860 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 01:54:50,860 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 01:54:50,860 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:54:50,861 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:54:50,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:54:50,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:54:50,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:54:50,862 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:55:02,671 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:55:02,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:55:02 BoogieIcfgContainer [2018-10-25 01:55:02,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:55:02,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:55:02,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:55:02,677 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:55:02,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:54:48" (1/3) ... [2018-10-25 01:55:02,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dbf061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:55:02, skipping insertion in model container [2018-10-25 01:55:02,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50" (2/3) ... [2018-10-25 01:55:02,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dbf061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:55:02, skipping insertion in model container [2018-10-25 01:55:02,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:55:02" (3/3) ... [2018-10-25 01:55:02,681 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label01_true-unreach-call.c [2018-10-25 01:55:02,692 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:55:02,702 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:55:02,720 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:55:02,765 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:55:02,765 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:55:02,765 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:55:02,766 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:55:02,766 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:55:02,766 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:55:02,766 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:55:02,766 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:55:02,812 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-25 01:55:02,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-25 01:55:02,822 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:55:02,823 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] [2018-10-25 01:55:02,826 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:55:02,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:55:02,833 INFO L82 PathProgramCache]: Analyzing trace with hash -412274706, now seen corresponding path program 1 times [2018-10-25 01:55:02,836 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:55:02,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:02,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:55:02,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:02,893 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:55:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:55:03,369 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 5 [2018-10-25 01:55:03,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:55:03,397 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:55:03,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:55:03,397 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:55:03,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:55:03,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:55:03,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:55:03,425 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-25 01:55:15,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:55:15,430 INFO L93 Difference]: Finished difference Result 2139 states and 3961 transitions. [2018-10-25 01:55:15,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:55:15,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-10-25 01:55:15,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:55:15,471 INFO L225 Difference]: With dead ends: 2139 [2018-10-25 01:55:15,471 INFO L226 Difference]: Without dead ends: 1529 [2018-10-25 01:55:15,481 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:55:15,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2018-10-25 01:55:15,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1527. [2018-10-25 01:55:15,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1527 states. [2018-10-25 01:55:15,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2413 transitions. [2018-10-25 01:55:15,641 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2413 transitions. Word has length 53 [2018-10-25 01:55:15,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:55:15,642 INFO L481 AbstractCegarLoop]: Abstraction has 1527 states and 2413 transitions. [2018-10-25 01:55:15,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:55:15,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2413 transitions. [2018-10-25 01:55:15,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-25 01:55:15,650 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:55:15,650 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:55:15,651 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:55:15,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:55:15,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1326175065, now seen corresponding path program 1 times [2018-10-25 01:55:15,651 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:55:15,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:15,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:55:15,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:15,654 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:55:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:55:16,030 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:55:16,030 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:55:16,030 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:55:16,031 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 129 with the following transitions: [2018-10-25 01:55:16,033 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1034], [1036], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:55:16,080 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:55:16,080 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:55:17,924 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:55:17,926 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 01:55:17,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:55:17,970 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:55:17,970 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:55:17,970 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:55:17,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:55:17,983 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:55:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:55:18,083 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:55:42,944 WARN L179 SmtUtils]: Spent 24.31 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-25 01:55:43,132 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:55:43,132 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:55:43,287 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-10-25 01:55:49,502 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-10-25 01:55:49,577 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-10-25 01:55:50,451 WARN L179 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-10-25 01:55:50,848 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:55:50,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 01:55:50,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-10-25 01:55:50,882 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:55:50,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:55:50,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:55:50,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=105, Unknown=2, NotChecked=0, Total=156 [2018-10-25 01:55:50,886 INFO L87 Difference]: Start difference. First operand 1527 states and 2413 transitions. Second operand 6 states. [2018-10-25 01:57:02,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:57:02,946 INFO L93 Difference]: Finished difference Result 5785 states and 9500 transitions. [2018-10-25 01:57:02,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:57:02,947 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-10-25 01:57:02,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:57:02,990 INFO L225 Difference]: With dead ends: 5785 [2018-10-25 01:57:02,991 INFO L226 Difference]: Without dead ends: 4264 [2018-10-25 01:57:03,006 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 251 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 32.0s TimeCoverageRelationStatistics Valid=49, Invalid=105, Unknown=2, NotChecked=0, Total=156 [2018-10-25 01:57:03,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2018-10-25 01:57:03,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4199. [2018-10-25 01:57:03,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4199 states. [2018-10-25 01:57:03,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4199 states to 4199 states and 6648 transitions. [2018-10-25 01:57:03,167 INFO L78 Accepts]: Start accepts. Automaton has 4199 states and 6648 transitions. Word has length 128 [2018-10-25 01:57:03,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:57:03,168 INFO L481 AbstractCegarLoop]: Abstraction has 4199 states and 6648 transitions. [2018-10-25 01:57:03,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:57:03,168 INFO L276 IsEmpty]: Start isEmpty. Operand 4199 states and 6648 transitions. [2018-10-25 01:57:03,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-25 01:57:03,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:57:03,189 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, 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] [2018-10-25 01:57:03,189 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:57:03,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:03,191 INFO L82 PathProgramCache]: Analyzing trace with hash -385017723, now seen corresponding path program 1 times [2018-10-25 01:57:03,191 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:57:03,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:03,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:03,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:03,193 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:57:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:03,563 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:57:03,634 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 93 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-25 01:57:03,634 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:03,634 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:57:03,635 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 212 with the following transitions: [2018-10-25 01:57:03,635 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1034], [1036], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1262], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:57:03,641 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:57:03,642 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:57:04,905 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:57:04,906 INFO L272 AbstractInterpreter]: Visited 92 different actions 262 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 01:57:04,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:04,942 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:57:04,942 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:04,943 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:57:04,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:04,962 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:57:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:05,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:57:05,353 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:57:05,353 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:57:05,698 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:57:05,719 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:57:05,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-25 01:57:05,720 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:57:05,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 01:57:05,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 01:57:05,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-25 01:57:05,721 INFO L87 Difference]: Start difference. First operand 4199 states and 6648 transitions. Second operand 9 states. [2018-10-25 01:57:15,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:57:15,828 INFO L93 Difference]: Finished difference Result 15978 states and 26592 transitions. [2018-10-25 01:57:15,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 01:57:15,828 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 211 [2018-10-25 01:57:15,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:57:15,893 INFO L225 Difference]: With dead ends: 15978 [2018-10-25 01:57:15,893 INFO L226 Difference]: Without dead ends: 11785 [2018-10-25 01:57:15,918 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 420 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-10-25 01:57:15,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11785 states. [2018-10-25 01:57:16,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11785 to 11765. [2018-10-25 01:57:16,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11765 states. [2018-10-25 01:57:16,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11765 states to 11765 states and 16748 transitions. [2018-10-25 01:57:16,248 INFO L78 Accepts]: Start accepts. Automaton has 11765 states and 16748 transitions. Word has length 211 [2018-10-25 01:57:16,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:57:16,249 INFO L481 AbstractCegarLoop]: Abstraction has 11765 states and 16748 transitions. [2018-10-25 01:57:16,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 01:57:16,249 INFO L276 IsEmpty]: Start isEmpty. Operand 11765 states and 16748 transitions. [2018-10-25 01:57:16,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-25 01:57:16,255 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:57:16,256 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, 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] [2018-10-25 01:57:16,256 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:57:16,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:16,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1931953849, now seen corresponding path program 1 times [2018-10-25 01:57:16,257 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:57:16,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:16,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:16,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:16,258 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:57:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:16,665 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:57:16,784 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 118 proven. 54 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-25 01:57:16,785 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:16,785 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:57:16,785 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 229 with the following transitions: [2018-10-25 01:57:16,786 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1034], [1036], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:57:16,790 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:57:16,790 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:57:17,100 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:57:17,100 INFO L272 AbstractInterpreter]: Visited 97 different actions 190 times. Merged at 7 different actions 8 times. Never widened. Found 2 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 01:57:17,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:17,128 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:57:17,128 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:17,128 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:57:17,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:17,144 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:57:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:17,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:57:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-25 01:57:17,283 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:57:17,390 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-25 01:57:17,411 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:57:17,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-25 01:57:17,411 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:57:17,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:57:17,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:57:17,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:57:17,413 INFO L87 Difference]: Start difference. First operand 11765 states and 16748 transitions. Second operand 3 states. [2018-10-25 01:57:21,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:57:21,435 INFO L93 Difference]: Finished difference Result 23524 states and 33490 transitions. [2018-10-25 01:57:21,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:57:21,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 228 [2018-10-25 01:57:21,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:57:21,488 INFO L225 Difference]: With dead ends: 23524 [2018-10-25 01:57:21,489 INFO L226 Difference]: Without dead ends: 11765 [2018-10-25 01:57:21,540 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 456 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:57:21,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11765 states. [2018-10-25 01:57:21,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11765 to 11765. [2018-10-25 01:57:21,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11765 states. [2018-10-25 01:57:21,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11765 states to 11765 states and 15905 transitions. [2018-10-25 01:57:21,994 INFO L78 Accepts]: Start accepts. Automaton has 11765 states and 15905 transitions. Word has length 228 [2018-10-25 01:57:21,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:57:21,995 INFO L481 AbstractCegarLoop]: Abstraction has 11765 states and 15905 transitions. [2018-10-25 01:57:21,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:57:21,995 INFO L276 IsEmpty]: Start isEmpty. Operand 11765 states and 15905 transitions. [2018-10-25 01:57:22,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-10-25 01:57:22,004 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:57:22,004 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:57:22,005 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:57:22,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:22,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1967517566, now seen corresponding path program 1 times [2018-10-25 01:57:22,006 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:57:22,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:22,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:22,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:22,007 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:57:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:22,350 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-25 01:57:22,351 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:22,351 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:57:22,351 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 328 with the following transitions: [2018-10-25 01:57:22,351 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1034], [1036], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1333], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:57:22,355 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:57:22,356 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:57:22,687 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:57:22,687 INFO L272 AbstractInterpreter]: Visited 109 different actions 220 times. Merged at 8 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-25 01:57:22,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:22,722 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:57:22,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:22,723 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:57:22,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:22,741 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:57:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:22,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:57:23,028 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-25 01:57:23,028 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:57:23,348 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-25 01:57:23,380 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:57:23,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-10-25 01:57:23,381 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:57:23,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-25 01:57:23,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-25 01:57:23,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:57:23,382 INFO L87 Difference]: Start difference. First operand 11765 states and 15905 transitions. Second operand 7 states. [2018-10-25 01:57:40,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:57:40,789 INFO L93 Difference]: Finished difference Result 30483 states and 42778 transitions. [2018-10-25 01:57:40,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-25 01:57:40,789 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 327 [2018-10-25 01:57:40,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:57:40,860 INFO L225 Difference]: With dead ends: 30483 [2018-10-25 01:57:40,860 INFO L226 Difference]: Without dead ends: 18251 [2018-10-25 01:57:40,887 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 655 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-10-25 01:57:40,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18251 states. [2018-10-25 01:57:41,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18251 to 17245. [2018-10-25 01:57:41,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17245 states. [2018-10-25 01:57:41,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17245 states to 17245 states and 21836 transitions. [2018-10-25 01:57:41,267 INFO L78 Accepts]: Start accepts. Automaton has 17245 states and 21836 transitions. Word has length 327 [2018-10-25 01:57:41,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:57:41,268 INFO L481 AbstractCegarLoop]: Abstraction has 17245 states and 21836 transitions. [2018-10-25 01:57:41,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-25 01:57:41,268 INFO L276 IsEmpty]: Start isEmpty. Operand 17245 states and 21836 transitions. [2018-10-25 01:57:41,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-10-25 01:57:41,283 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:57:41,284 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:57:41,284 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:57:41,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:41,284 INFO L82 PathProgramCache]: Analyzing trace with hash 670201538, now seen corresponding path program 1 times [2018-10-25 01:57:41,285 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:57:41,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:41,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:41,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:41,286 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:57:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:42,453 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-25 01:57:43,141 WARN L179 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-10-25 01:57:43,329 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 150 proven. 258 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 01:57:43,330 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:43,330 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:57:43,330 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 351 with the following transitions: [2018-10-25 01:57:43,330 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1034], [1036], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1333], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:57:43,335 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:57:43,335 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:57:43,800 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:57:43,801 INFO L272 AbstractInterpreter]: Visited 120 different actions 241 times. Merged at 8 different actions 13 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 01:57:43,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:43,841 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:57:43,841 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:43,841 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:57:43,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:43,857 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:57:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:43,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:57:44,321 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-10-25 01:57:44,321 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:57:44,538 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2018-10-25 01:57:44,825 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-25 01:57:45,570 WARN L179 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-25 01:57:45,701 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-25 01:57:45,927 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-25 01:57:46,074 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-25 01:57:46,454 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 15 [2018-10-25 01:57:46,545 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:57:47,314 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 144 proven. 264 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 01:57:47,335 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:57:47,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2018-10-25 01:57:47,335 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:57:47,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-25 01:57:47,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-25 01:57:47,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2018-10-25 01:57:47,339 INFO L87 Difference]: Start difference. First operand 17245 states and 21836 transitions. Second operand 15 states. [2018-10-25 01:58:29,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:58:29,623 INFO L93 Difference]: Finished difference Result 48996 states and 64576 transitions. [2018-10-25 01:58:29,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-25 01:58:29,624 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 350 [2018-10-25 01:58:29,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:58:29,753 INFO L225 Difference]: With dead ends: 48996 [2018-10-25 01:58:29,753 INFO L226 Difference]: Without dead ends: 31288 [2018-10-25 01:58:29,796 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 739 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1727 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1157, Invalid=4393, Unknown=0, NotChecked=0, Total=5550 [2018-10-25 01:58:29,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31288 states. [2018-10-25 01:58:30,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31288 to 27867. [2018-10-25 01:58:30,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27867 states. [2018-10-25 01:58:30,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27867 states to 27867 states and 35598 transitions. [2018-10-25 01:58:30,838 INFO L78 Accepts]: Start accepts. Automaton has 27867 states and 35598 transitions. Word has length 350 [2018-10-25 01:58:30,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:58:30,840 INFO L481 AbstractCegarLoop]: Abstraction has 27867 states and 35598 transitions. [2018-10-25 01:58:30,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-25 01:58:30,840 INFO L276 IsEmpty]: Start isEmpty. Operand 27867 states and 35598 transitions. [2018-10-25 01:58:30,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-10-25 01:58:30,857 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:58:30,858 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:58:30,858 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:58:30,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:30,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1021803679, now seen corresponding path program 1 times [2018-10-25 01:58:30,859 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:58:30,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:30,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:30,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:30,863 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:58:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:31,823 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-10-25 01:58:32,015 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-25 01:58:32,951 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 146 proven. 262 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 01:58:32,952 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:58:32,952 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:58:32,952 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 416 with the following transitions: [2018-10-25 01:58:32,952 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1034], [1036], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1333], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1720], [1725], [1727], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:58:32,958 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:58:32,959 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:58:33,385 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:58:33,385 INFO L272 AbstractInterpreter]: Visited 185 different actions 369 times. Merged at 8 different actions 13 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 01:58:33,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:33,426 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:58:33,426 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:58:33,426 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:58:33,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:33,442 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:58:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:33,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:58:34,319 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-25 01:58:40,822 WARN L179 SmtUtils]: Spent 6.18 s on a formula simplification. DAG size of input: 80 DAG size of output: 21 [2018-10-25 01:58:41,279 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 311 proven. 55 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-10-25 01:58:41,279 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:58:42,123 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-10-25 01:58:44,778 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-25 01:58:44,780 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-10-25 01:58:44,943 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 108 [2018-10-25 01:58:46,749 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 148 proven. 260 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 01:58:46,772 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:58:46,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 30 [2018-10-25 01:58:46,773 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:58:46,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-25 01:58:46,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-25 01:58:46,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2018-10-25 01:58:46,775 INFO L87 Difference]: Start difference. First operand 27867 states and 35598 transitions. Second operand 22 states. [2018-10-25 01:58:50,848 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 Received shutdown request... [2018-10-25 01:58:56,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-25 01:58:56,930 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 01:58:56,937 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 01:58:56,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 01:58:56 BoogieIcfgContainer [2018-10-25 01:58:56,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 01:58:56,939 INFO L168 Benchmark]: Toolchain (without parser) took 248484.72 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -540.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-25 01:58:56,940 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. [2018-10-25 01:58:56,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1609.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-10-25 01:58:56,941 INFO L168 Benchmark]: Boogie Procedure Inliner took 486.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -950.1 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-25 01:58:56,942 INFO L168 Benchmark]: Boogie Preprocessor took 230.88 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2018-10-25 01:58:56,943 INFO L168 Benchmark]: RCFGBuilder took 11887.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 469.0 MB). Peak memory consumption was 469.0 MB. Max. memory is 7.1 GB. [2018-10-25 01:58:56,943 INFO L168 Benchmark]: TraceAbstraction took 234264.22 ms. Allocated memory was 2.3 GB in the beginning and 3.5 GB in the end (delta: 1.1 GB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -213.7 MB). Peak memory consumption was 925.6 MB. Max. memory is 7.1 GB. [2018-10-25 01:58:56,948 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 1609.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 486.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -950.1 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 230.88 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11887.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 469.0 MB). Peak memory consumption was 469.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234264.22 ms. Allocated memory was 2.3 GB in the beginning and 3.5 GB in the end (delta: 1.1 GB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -213.7 MB). Peak memory consumption was 925.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 146). Cancelled while BasicCegarLoop was constructing difference of abstraction (27867states) and FLOYD_HOARE automaton (currently 11 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (323 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 234.1s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 168.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2044 SDtfs, 18036 SDslu, 2346 SDs, 0 SdLazy, 27020 SolverSat, 9167 SolverUnsat, 34 SolverUnknown, 0 SolverNotchecked, 155.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3514 GetRequests, 3344 SyntacticMatches, 17 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2110 ImplicationChecksByTransitivity, 51.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27867occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.9s AbstIntTime, 6 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 4514 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 55.4s InterpolantComputationTime, 3371 NumberOfCodeBlocks, 3371 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 5011 ConstructedInterpolants, 276 QuantifiedInterpolants, 13206142 SizeOfPredicates, 25 NumberOfNonLiveVariables, 2894 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 19 InterpolantComputations, 4 PerfectInterpolantSequences, 3594/4854 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown