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_label06_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:54:50,671 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:54:50,677 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:54:50,689 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:54:50,690 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:54:50,691 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:54:50,692 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:54:50,694 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:54:50,696 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:54:50,697 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:54:50,698 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:54:50,698 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:54:50,699 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:54:50,700 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:54:50,701 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:54:50,702 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:54:50,702 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:54:50,704 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:54:50,706 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:54:50,707 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:54:50,708 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:54:50,710 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:54:50,712 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 01:54:50,720 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 01:54:50,734 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:54:50,734 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:54:50,735 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:54:50,735 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:54:50,735 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:54:50,736 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:54:50,736 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:54:50,736 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:54:50,736 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:54:50,736 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:54:50,737 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:54:50,737 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:54:50,737 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:54:50,737 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:54:50,738 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:54:50,738 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:54:50,738 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:54:50,738 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:54:50,739 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:54:50,739 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:54:50,739 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:54:50,739 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:54:50,740 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:54:50,740 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:54:50,740 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:54:50,740 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:54:50,740 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:54:50,741 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:54:50,741 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:54:50,741 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:54:50,741 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:54:50,741 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:54:50,741 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:54:50,742 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:54:50,742 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:54:50,742 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:54:50,805 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:54:50,818 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:54:50,821 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:54:50,823 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:54:50,823 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:54:50,824 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label06_true-unreach-call.c [2018-10-25 01:54:50,882 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0e22fcb9e/24291f5f107247af9498a2f047003049/FLAGe8168b353 [2018-10-25 01:54:51,676 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:54:51,677 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label06_true-unreach-call.c [2018-10-25 01:54:51,710 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0e22fcb9e/24291f5f107247af9498a2f047003049/FLAGe8168b353 [2018-10-25 01:54:51,727 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0e22fcb9e/24291f5f107247af9498a2f047003049 [2018-10-25 01:54:51,738 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:54:51,739 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:54:51,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:54:51,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:54:51,744 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:54:51,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:54:51" (1/1) ... [2018-10-25 01:54:51,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f32220e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:51, skipping insertion in model container [2018-10-25 01:54:51,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:54:51" (1/1) ... [2018-10-25 01:54:51,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:54:51,869 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:54:53,018 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:54:53,028 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:54:53,397 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:54:53,422 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:54:53,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:53 WrapperNode [2018-10-25 01:54:53,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:54:53,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:54:53,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:54:53,424 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:54:53,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:53" (1/1) ... [2018-10-25 01:54:53,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:53" (1/1) ... [2018-10-25 01:54:53,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:54:53,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:54:53,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:54:53,891 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:54:53,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:53" (1/1) ... [2018-10-25 01:54:53,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:53" (1/1) ... [2018-10-25 01:54:53,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:53" (1/1) ... [2018-10-25 01:54:53,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:53" (1/1) ... [2018-10-25 01:54:54,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:53" (1/1) ... [2018-10-25 01:54:54,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:53" (1/1) ... [2018-10-25 01:54:54,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:53" (1/1) ... [2018-10-25 01:54:54,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:54:54,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:54:54,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:54:54,160 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:54:54,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:53" (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 01:54:54,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:54:54,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:54:54,226 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 01:54:54,226 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 01:54:54,226 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:54:54,226 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:54:54,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:54:54,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:54:54,227 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:54:54,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:55:07,267 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:55:07,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:55:07 BoogieIcfgContainer [2018-10-25 01:55:07,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:55:07,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:55:07,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:55:07,273 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:55:07,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:54:51" (1/3) ... [2018-10-25 01:55:07,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444506a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:55:07, skipping insertion in model container [2018-10-25 01:55:07,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:53" (2/3) ... [2018-10-25 01:55:07,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444506a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:55:07, skipping insertion in model container [2018-10-25 01:55:07,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:55:07" (3/3) ... [2018-10-25 01:55:07,277 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label06_true-unreach-call.c [2018-10-25 01:55:07,287 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:55:07,296 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:55:07,314 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:55:07,368 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:55:07,368 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:55:07,368 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:55:07,368 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:55:07,368 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:55:07,369 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:55:07,369 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:55:07,369 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:55:07,409 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-25 01:55:07,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-25 01:55:07,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:55:07,419 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] [2018-10-25 01:55:07,422 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:55:07,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:55:07,429 INFO L82 PathProgramCache]: Analyzing trace with hash 2116554596, now seen corresponding path program 1 times [2018-10-25 01:55:07,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:55:07,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:07,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:55:07,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:07,492 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:55:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:55:07,977 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 01:55:07,981 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:55:07,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:55:07,982 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:55:07,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:55:08,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:55:08,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:55:08,010 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-25 01:55:21,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:55:21,499 INFO L93 Difference]: Finished difference Result 2137 states and 3966 transitions. [2018-10-25 01:55:21,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:55:21,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-10-25 01:55:21,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:55:21,538 INFO L225 Difference]: With dead ends: 2137 [2018-10-25 01:55:21,538 INFO L226 Difference]: Without dead ends: 1527 [2018-10-25 01:55:21,552 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:55:21,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2018-10-25 01:55:21,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1513. [2018-10-25 01:55:21,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1513 states. [2018-10-25 01:55:21,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2344 transitions. [2018-10-25 01:55:21,711 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2344 transitions. Word has length 38 [2018-10-25 01:55:21,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:55:21,712 INFO L481 AbstractCegarLoop]: Abstraction has 1513 states and 2344 transitions. [2018-10-25 01:55:21,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:55:21,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2344 transitions. [2018-10-25 01:55:21,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-25 01:55:21,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:55:21,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:21,719 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:55:21,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:55:21,720 INFO L82 PathProgramCache]: Analyzing trace with hash 2036710450, now seen corresponding path program 1 times [2018-10-25 01:55:21,720 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:55:21,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:21,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:55:21,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:21,721 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:55:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:55:22,082 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:55:22,221 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:55:22,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:55:22,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 01:55:22,222 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:55:22,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 01:55:22,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 01:55:22,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 01:55:22,224 INFO L87 Difference]: Start difference. First operand 1513 states and 2344 transitions. Second operand 5 states. [2018-10-25 01:55:31,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:55:31,564 INFO L93 Difference]: Finished difference Result 4413 states and 7007 transitions. [2018-10-25 01:55:31,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:55:31,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2018-10-25 01:55:31,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:55:31,594 INFO L225 Difference]: With dead ends: 4413 [2018-10-25 01:55:31,595 INFO L226 Difference]: Without dead ends: 2906 [2018-10-25 01:55:31,601 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:55:31,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2018-10-25 01:55:31,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2873. [2018-10-25 01:55:31,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2873 states. [2018-10-25 01:55:31,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 4204 transitions. [2018-10-25 01:55:31,714 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 4204 transitions. Word has length 110 [2018-10-25 01:55:31,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:55:31,716 INFO L481 AbstractCegarLoop]: Abstraction has 2873 states and 4204 transitions. [2018-10-25 01:55:31,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 01:55:31,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 4204 transitions. [2018-10-25 01:55:31,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-25 01:55:31,726 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:55:31,727 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:31,727 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:55:31,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:55:31,727 INFO L82 PathProgramCache]: Analyzing trace with hash -493194566, now seen corresponding path program 1 times [2018-10-25 01:55:31,728 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:55:31,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:31,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:55:31,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:31,730 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:55:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:55:32,014 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:55:32,014 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:55:32,015 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:55:32,016 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 114 with the following transitions: [2018-10-25 01:55:32,018 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], [914], [916], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [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 01:55:32,068 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:55:32,068 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:55:33,733 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:55:33,735 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 01:55:33,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:55:33,783 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:55:33,783 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:55:33,783 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 01:55:33,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:55:33,804 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:55:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:55:33,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:56:00,810 WARN L179 SmtUtils]: Spent 24.24 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-25 01:56:21,033 WARN L179 SmtUtils]: Spent 16.09 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-10-25 01:56:21,576 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:56:21,576 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:56:22,160 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-10-25 01:56:26,332 WARN L179 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-10-25 01:56:26,414 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-10-25 01:56:29,041 WARN L179 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-10-25 01:56:29,339 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:56:29,374 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 01:56:29,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-25 01:56:29,375 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:56:29,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:56:29,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:56:29,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=160, Unknown=4, NotChecked=0, Total=210 [2018-10-25 01:56:29,377 INFO L87 Difference]: Start difference. First operand 2873 states and 4204 transitions. Second operand 6 states. [2018-10-25 01:57:01,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:57:01,840 INFO L93 Difference]: Finished difference Result 11131 states and 16947 transitions. [2018-10-25 01:57:01,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:57:01,841 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-10-25 01:57:01,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:57:01,898 INFO L225 Difference]: With dead ends: 11131 [2018-10-25 01:57:01,899 INFO L226 Difference]: Without dead ends: 8264 [2018-10-25 01:57:01,920 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 54.3s TimeCoverageRelationStatistics Valid=46, Invalid=160, Unknown=4, NotChecked=0, Total=210 [2018-10-25 01:57:01,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8264 states. [2018-10-25 01:57:02,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8264 to 8227. [2018-10-25 01:57:02,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8227 states. [2018-10-25 01:57:02,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8227 states to 8227 states and 12362 transitions. [2018-10-25 01:57:02,172 INFO L78 Accepts]: Start accepts. Automaton has 8227 states and 12362 transitions. Word has length 113 [2018-10-25 01:57:02,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:57:02,173 INFO L481 AbstractCegarLoop]: Abstraction has 8227 states and 12362 transitions. [2018-10-25 01:57:02,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:57:02,173 INFO L276 IsEmpty]: Start isEmpty. Operand 8227 states and 12362 transitions. [2018-10-25 01:57:02,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-25 01:57:02,183 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:57:02,187 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:57:02,187 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:57:02,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:02,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1553350869, now seen corresponding path program 1 times [2018-10-25 01:57:02,188 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:57:02,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:02,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:02,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:02,189 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:57:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:02,787 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:57:02,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:57:02,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:57:02,787 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:57:02,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:57:02,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:57:02,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:57:02,789 INFO L87 Difference]: Start difference. First operand 8227 states and 12362 transitions. Second operand 6 states. [2018-10-25 01:57:14,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:57:14,828 INFO L93 Difference]: Finished difference Result 26612 states and 41325 transitions. [2018-10-25 01:57:14,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 01:57:14,834 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2018-10-25 01:57:14,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:57:14,944 INFO L225 Difference]: With dead ends: 26612 [2018-10-25 01:57:14,944 INFO L226 Difference]: Without dead ends: 18391 [2018-10-25 01:57:15,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:57:15,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18391 states. [2018-10-25 01:57:15,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18391 to 18303. [2018-10-25 01:57:15,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18303 states. [2018-10-25 01:57:15,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18303 states to 18303 states and 24950 transitions. [2018-10-25 01:57:15,524 INFO L78 Accepts]: Start accepts. Automaton has 18303 states and 24950 transitions. Word has length 183 [2018-10-25 01:57:15,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:57:15,526 INFO L481 AbstractCegarLoop]: Abstraction has 18303 states and 24950 transitions. [2018-10-25 01:57:15,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:57:15,527 INFO L276 IsEmpty]: Start isEmpty. Operand 18303 states and 24950 transitions. [2018-10-25 01:57:15,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-25 01:57:15,536 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:57:15,536 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, 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] [2018-10-25 01:57:15,537 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:57:15,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:15,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1998525290, now seen corresponding path program 1 times [2018-10-25 01:57:15,537 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:57:15,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:15,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:15,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:15,539 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:57:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:15,858 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:57:16,280 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 63 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-25 01:57:16,281 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:16,281 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:57:16,281 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 197 with the following transitions: [2018-10-25 01:57:16,282 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], [914], [916], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [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], [1247], [1252], [1254], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:57:16,293 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:57:16,293 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:57:17,484 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:57:17,490 INFO L272 AbstractInterpreter]: Visited 90 different actions 256 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 01:57:17,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:17,523 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:57:17,523 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:17,523 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 01:57:17,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:17,539 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:57:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:17,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:57:17,752 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:57:17,752 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:57:18,060 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:57:18,081 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:57:18,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-25 01:57:18,082 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:57:18,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 01:57:18,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 01:57:18,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-25 01:57:18,084 INFO L87 Difference]: Start difference. First operand 18303 states and 24950 transitions. Second operand 9 states. [2018-10-25 01:57:28,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:57:28,340 INFO L93 Difference]: Finished difference Result 40645 states and 56464 transitions. [2018-10-25 01:57:28,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 01:57:28,341 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 196 [2018-10-25 01:57:28,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:57:28,421 INFO L225 Difference]: With dead ends: 40645 [2018-10-25 01:57:28,422 INFO L226 Difference]: Without dead ends: 22348 [2018-10-25 01:57:28,471 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 390 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-10-25 01:57:28,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22348 states. [2018-10-25 01:57:28,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22348 to 22274. [2018-10-25 01:57:28,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22274 states. [2018-10-25 01:57:29,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22274 states to 22274 states and 27149 transitions. [2018-10-25 01:57:29,022 INFO L78 Accepts]: Start accepts. Automaton has 22274 states and 27149 transitions. Word has length 196 [2018-10-25 01:57:29,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:57:29,023 INFO L481 AbstractCegarLoop]: Abstraction has 22274 states and 27149 transitions. [2018-10-25 01:57:29,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 01:57:29,023 INFO L276 IsEmpty]: Start isEmpty. Operand 22274 states and 27149 transitions. [2018-10-25 01:57:29,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-25 01:57:29,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:57:29,029 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, 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] [2018-10-25 01:57:29,029 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:57:29,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:29,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1973343696, now seen corresponding path program 1 times [2018-10-25 01:57:29,030 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:57:29,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:29,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:29,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:29,031 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:57:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:29,325 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:57:30,082 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 89 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-25 01:57:30,082 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:30,082 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:57:30,083 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 200 with the following transitions: [2018-10-25 01:57:30,083 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], [914], [916], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1215], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:57:30,090 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:57:30,090 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:57:30,596 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:57:30,597 INFO L272 AbstractInterpreter]: Visited 97 different actions 293 times. Merged at 7 different actions 25 times. Widened at 1 different actions 1 times. Found 3 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 01:57:30,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:30,635 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:57:30,635 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:30,636 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 01:57:30,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:30,646 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:57:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:30,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:57:30,910 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-25 01:57:30,911 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:57:31,075 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-25 01:57:31,096 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:57:31,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-25 01:57:31,097 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:57:31,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:57:31,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:57:31,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:57:31,098 INFO L87 Difference]: Start difference. First operand 22274 states and 27149 transitions. Second operand 3 states. [2018-10-25 01:57:34,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:57:34,588 INFO L93 Difference]: Finished difference Result 44542 states and 54292 transitions. [2018-10-25 01:57:34,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:57:34,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 199 [2018-10-25 01:57:34,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:57:34,675 INFO L225 Difference]: With dead ends: 44542 [2018-10-25 01:57:34,675 INFO L226 Difference]: Without dead ends: 22274 [2018-10-25 01:57:34,733 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 398 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:57:34,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22274 states. [2018-10-25 01:57:35,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22274 to 21404. [2018-10-25 01:57:35,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21404 states. [2018-10-25 01:57:35,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21404 states to 21404 states and 25238 transitions. [2018-10-25 01:57:35,136 INFO L78 Accepts]: Start accepts. Automaton has 21404 states and 25238 transitions. Word has length 199 [2018-10-25 01:57:35,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:57:35,137 INFO L481 AbstractCegarLoop]: Abstraction has 21404 states and 25238 transitions. [2018-10-25 01:57:35,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:57:35,137 INFO L276 IsEmpty]: Start isEmpty. Operand 21404 states and 25238 transitions. [2018-10-25 01:57:35,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-10-25 01:57:35,149 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:57:35,150 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, 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, 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 01:57:35,150 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:57:35,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:35,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1689262736, now seen corresponding path program 1 times [2018-10-25 01:57:35,151 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:57:35,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:35,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:35,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:35,152 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:57:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:35,748 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 255 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-25 01:57:35,749 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:35,749 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:57:35,749 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 299 with the following transitions: [2018-10-25 01:57:35,750 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], [914], [916], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1215], [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], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:57:35,754 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:57:35,755 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:57:36,261 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:57:36,261 INFO L272 AbstractInterpreter]: Visited 109 different actions 334 times. Merged at 8 different actions 30 times. Widened at 1 different actions 2 times. Found 5 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 01:57:36,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:36,288 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:57:36,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:36,289 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 01:57:36,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:36,302 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:57:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:36,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:57:36,647 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 255 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-25 01:57:36,647 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:57:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 255 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-25 01:57:37,240 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:57:37,240 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-10-25 01:57:37,240 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:57:37,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-25 01:57:37,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-25 01:57:37,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:57:37,242 INFO L87 Difference]: Start difference. First operand 21404 states and 25238 transitions. Second operand 7 states. [2018-10-25 01:57:53,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:57:53,939 INFO L93 Difference]: Finished difference Result 51715 states and 62392 transitions. [2018-10-25 01:57:53,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-25 01:57:53,939 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 298 [2018-10-25 01:57:53,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:57:54,016 INFO L225 Difference]: With dead ends: 51715 [2018-10-25 01:57:54,016 INFO L226 Difference]: Without dead ends: 30317 [2018-10-25 01:57:54,061 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 597 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-10-25 01:57:54,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30317 states. [2018-10-25 01:57:54,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30317 to 29375. [2018-10-25 01:57:54,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29375 states. [2018-10-25 01:57:54,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29375 states to 29375 states and 34636 transitions. [2018-10-25 01:57:54,576 INFO L78 Accepts]: Start accepts. Automaton has 29375 states and 34636 transitions. Word has length 298 [2018-10-25 01:57:54,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:57:54,577 INFO L481 AbstractCegarLoop]: Abstraction has 29375 states and 34636 transitions. [2018-10-25 01:57:54,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-25 01:57:54,577 INFO L276 IsEmpty]: Start isEmpty. Operand 29375 states and 34636 transitions. [2018-10-25 01:57:54,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-25 01:57:54,599 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:57:54,600 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:57:54,600 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:57:54,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:54,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1848184147, now seen corresponding path program 1 times [2018-10-25 01:57:54,601 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:57:54,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:54,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:54,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:54,602 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:57:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:55,086 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-25 01:57:55,086 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:55,086 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:57:55,087 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 363 with the following transitions: [2018-10-25 01:57:55,087 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], [914], [916], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [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], [1274], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [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], [1600], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:57:55,093 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:57:55,093 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:57:56,319 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:57:56,319 INFO L272 AbstractInterpreter]: Visited 160 different actions 486 times. Merged at 8 different actions 29 times. Widened at 1 different actions 1 times. Found 5 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 01:57:56,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:56,357 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:57:56,357 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:56,357 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 01:57:56,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:56,374 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:57:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:56,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:57:56,766 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-25 01:57:56,767 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:57:56,942 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-25 01:57:56,964 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:57:56,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-25 01:57:56,964 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:57:56,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-25 01:57:56,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-25 01:57:56,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-10-25 01:57:56,965 INFO L87 Difference]: Start difference. First operand 29375 states and 34636 transitions. Second operand 8 states. [2018-10-25 01:58:24,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:58:24,236 INFO L93 Difference]: Finished difference Result 72343 states and 87052 transitions. [2018-10-25 01:58:24,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 01:58:24,238 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 362 [2018-10-25 01:58:24,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:58:24,363 INFO L225 Difference]: With dead ends: 72343 [2018-10-25 01:58:24,363 INFO L226 Difference]: Without dead ends: 42974 [2018-10-25 01:58:24,426 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 721 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-25 01:58:24,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42974 states. [2018-10-25 01:58:25,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42974 to 42902. [2018-10-25 01:58:25,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42902 states. [2018-10-25 01:58:25,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42902 states to 42902 states and 51085 transitions. [2018-10-25 01:58:25,195 INFO L78 Accepts]: Start accepts. Automaton has 42902 states and 51085 transitions. Word has length 362 [2018-10-25 01:58:25,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:58:25,196 INFO L481 AbstractCegarLoop]: Abstraction has 42902 states and 51085 transitions. [2018-10-25 01:58:25,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-25 01:58:25,196 INFO L276 IsEmpty]: Start isEmpty. Operand 42902 states and 51085 transitions. [2018-10-25 01:58:25,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2018-10-25 01:58:25,229 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:58:25,229 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:25,230 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:58:25,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:25,230 INFO L82 PathProgramCache]: Analyzing trace with hash 917551413, now seen corresponding path program 1 times [2018-10-25 01:58:25,230 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:58:25,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:25,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:25,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:25,231 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:58:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:25,534 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-10-25 01:58:25,535 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:58:25,535 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:58:25,535 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 380 with the following transitions: [2018-10-25 01:58:25,535 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], [914], [916], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [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], [1274], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [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], [1681], [1684], [1688], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:58:25,540 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:58:25,541 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:58:26,219 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:58:26,219 INFO L272 AbstractInterpreter]: Visited 177 different actions 535 times. Merged at 8 different actions 29 times. Widened at 1 different actions 1 times. Found 5 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 01:58:26,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:26,255 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:58:26,255 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:58:26,255 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 01:58:26,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:26,266 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:58:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:26,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:58:26,455 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-10-25 01:58:26,456 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:58:26,792 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-10-25 01:58:26,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 01:58:26,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 3 [2018-10-25 01:58:26,814 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:58:26,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:58:26,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:58:26,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:58:26,816 INFO L87 Difference]: Start difference. First operand 42902 states and 51085 transitions. Second operand 3 states. [2018-10-25 01:58:31,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:58:31,676 INFO L93 Difference]: Finished difference Result 94427 states and 112335 transitions. [2018-10-25 01:58:31,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:58:31,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 379 [2018-10-25 01:58:31,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:58:31,806 INFO L225 Difference]: With dead ends: 94427 [2018-10-25 01:58:31,806 INFO L226 Difference]: Without dead ends: 51531 [2018-10-25 01:58:31,884 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:58:31,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51531 states. [2018-10-25 01:58:32,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51531 to 50657. [2018-10-25 01:58:32,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50657 states. [2018-10-25 01:58:32,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50657 states to 50657 states and 59490 transitions. [2018-10-25 01:58:32,722 INFO L78 Accepts]: Start accepts. Automaton has 50657 states and 59490 transitions. Word has length 379 [2018-10-25 01:58:32,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:58:32,723 INFO L481 AbstractCegarLoop]: Abstraction has 50657 states and 59490 transitions. [2018-10-25 01:58:32,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:58:32,723 INFO L276 IsEmpty]: Start isEmpty. Operand 50657 states and 59490 transitions. [2018-10-25 01:58:32,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-10-25 01:58:32,758 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:58:32,758 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:32,758 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:58:32,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:32,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1308911778, now seen corresponding path program 1 times [2018-10-25 01:58:32,759 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:58:32,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:32,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:32,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:32,760 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:58:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:33,436 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-25 01:58:33,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:58:33,437 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:58:33,437 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 388 with the following transitions: [2018-10-25 01:58:33,437 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], [914], [916], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [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], [1274], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [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], [1723], [1727], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:58:33,442 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:58:33,442 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:58:34,127 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:58:34,128 INFO L272 AbstractInterpreter]: Visited 185 different actions 560 times. Merged at 8 different actions 30 times. Widened at 1 different actions 2 times. Found 5 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 01:58:34,155 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:34,156 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:58:34,156 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:58:34,156 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:58:34,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:34,164 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:58:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:34,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:58:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-25 01:58:34,703 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:58:34,864 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-25 01:58:34,886 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:58:34,886 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-10-25 01:58:34,886 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:58:34,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-25 01:58:34,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-25 01:58:34,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:58:34,888 INFO L87 Difference]: Start difference. First operand 50657 states and 59490 transitions. Second operand 7 states. Received shutdown request... [2018-10-25 01:58:53,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-25 01:58:53,909 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 01:58:53,915 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 01:58:53,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 01:58:53 BoogieIcfgContainer [2018-10-25 01:58:53,915 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 01:58:53,916 INFO L168 Benchmark]: Toolchain (without parser) took 242177.83 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -692.1 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-25 01:58:53,917 INFO L168 Benchmark]: CDTParser took 0.19 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 01:58:53,918 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1682.87 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-25 01:58:53,919 INFO L168 Benchmark]: Boogie Procedure Inliner took 466.81 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -949.0 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-25 01:58:53,920 INFO L168 Benchmark]: Boogie Preprocessor took 268.39 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: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2018-10-25 01:58:53,920 INFO L168 Benchmark]: RCFGBuilder took 13109.41 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: 465.5 MB). Peak memory consumption was 465.5 MB. Max. memory is 7.1 GB. [2018-10-25 01:58:53,922 INFO L168 Benchmark]: TraceAbstraction took 226645.32 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 1.7 GB in the beginning and 2.1 GB in the end (delta: -373.3 MB). Peak memory consumption was 982.5 MB. Max. memory is 7.1 GB. [2018-10-25 01:58:53,928 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1682.87 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 466.81 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -949.0 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 268.39 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: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13109.41 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: 465.5 MB). Peak memory consumption was 465.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226645.32 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 1.7 GB in the beginning and 2.1 GB in the end (delta: -373.3 MB). Peak memory consumption was 982.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 101). Cancelled while BasicCegarLoop was constructing difference of abstraction (50657states) and FLOYD_HOARE automaton (currently 13 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (127073 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 226.5s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 150.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3183 SDtfs, 19403 SDslu, 2783 SDs, 0 SdLazy, 32657 SolverSat, 8618 SolverUnsat, 16 SolverUnknown, 0 SolverNotchecked, 135.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3971 GetRequests, 3871 SyntacticMatches, 16 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 58.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50657occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.8s AbstIntTime, 7 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 3004 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 63.1s InterpolantComputationTime, 4199 NumberOfCodeBlocks, 4199 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 6109 ConstructedInterpolants, 112 QuantifiedInterpolants, 4784909 SizeOfPredicates, 11 NumberOfNonLiveVariables, 3408 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 24 InterpolantComputations, 7 PerfectInterpolantSequences, 4999/5129 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown