java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label29_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:35:55,628 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:35:55,630 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:35:55,643 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:35:55,643 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:35:55,644 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:35:55,646 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:35:55,648 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:35:55,649 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:35:55,650 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:35:55,651 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:35:55,651 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:35:55,652 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:35:55,654 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:35:55,655 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:35:55,656 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:35:55,657 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:35:55,660 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:35:55,667 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:35:55,672 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:35:55,673 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:35:55,677 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:35:55,685 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 23:35:55,700 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-26 23:35:55,729 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:35:55,729 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:35:55,734 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:35:55,734 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:35:55,734 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:35:55,735 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:35:55,735 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:35:55,737 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:35:55,737 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 23:35:55,737 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:35:55,737 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:35:55,738 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:35:55,738 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:35:55,739 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:35:55,739 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:35:55,739 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:35:55,739 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:35:55,740 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:35:55,740 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:35:55,740 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:35:55,740 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:35:55,740 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:35:55,741 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:35:55,741 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:35:55,741 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:35:55,741 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:35:55,742 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:35:55,742 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:35:55,742 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:35:55,742 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:35:55,742 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:35:55,742 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:35:55,743 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 23:35:55,743 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 23:35:55,787 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:35:55,800 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:35:55,804 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:35:55,805 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:35:55,806 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:35:55,806 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label29_false-unreach-call.c [2018-10-26 23:35:55,872 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2753694c7/cefb386d59bf43f8be8f36dc25345a06/FLAGe4a8afce9 [2018-10-26 23:35:56,504 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:35:56,505 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label29_false-unreach-call.c [2018-10-26 23:35:56,522 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2753694c7/cefb386d59bf43f8be8f36dc25345a06/FLAGe4a8afce9 [2018-10-26 23:35:56,546 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2753694c7/cefb386d59bf43f8be8f36dc25345a06 [2018-10-26 23:35:56,559 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:35:56,561 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:35:56,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:35:56,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:35:56,567 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:35:56,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:35:56" (1/1) ... [2018-10-26 23:35:56,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b8c9ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:56, skipping insertion in model container [2018-10-26 23:35:56,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:35:56" (1/1) ... [2018-10-26 23:35:56,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:35:56,650 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:35:57,201 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:35:57,208 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:35:57,479 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:35:57,501 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:35:57,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:57 WrapperNode [2018-10-26 23:35:57,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:35:57,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:35:57,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:35:57,503 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:35:57,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:57" (1/1) ... [2018-10-26 23:35:57,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:57" (1/1) ... [2018-10-26 23:35:57,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:35:57,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:35:57,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:35:57,811 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:35:57,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:57" (1/1) ... [2018-10-26 23:35:57,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:57" (1/1) ... [2018-10-26 23:35:57,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:57" (1/1) ... [2018-10-26 23:35:57,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:57" (1/1) ... [2018-10-26 23:35:57,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:57" (1/1) ... [2018-10-26 23:35:57,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:57" (1/1) ... [2018-10-26 23:35:57,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:57" (1/1) ... [2018-10-26 23:35:57,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:35:57,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:35:57,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:35:57,986 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:35:57,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:57" (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 [2018-10-26 23:35:58,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:35:58,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:35:58,068 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 23:35:58,069 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 23:35:58,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:35:58,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:35:58,070 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:35:58,070 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:36:02,801 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:36:02,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:36:02 BoogieIcfgContainer [2018-10-26 23:36:02,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:36:02,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:36:02,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:36:02,813 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:36:02,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:35:56" (1/3) ... [2018-10-26 23:36:02,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73478407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:36:02, skipping insertion in model container [2018-10-26 23:36:02,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:57" (2/3) ... [2018-10-26 23:36:02,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73478407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:36:02, skipping insertion in model container [2018-10-26 23:36:02,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:36:02" (3/3) ... [2018-10-26 23:36:02,818 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label29_false-unreach-call.c [2018-10-26 23:36:02,830 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:36:02,843 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:36:02,864 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:36:02,920 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:36:02,921 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:36:02,921 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:36:02,921 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:36:02,922 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:36:02,922 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:36:02,922 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:36:02,922 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:36:02,967 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-26 23:36:02,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-26 23:36:02,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:36:02,982 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] [2018-10-26 23:36:02,984 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:36:02,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:36:02,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1657837633, now seen corresponding path program 1 times [2018-10-26 23:36:02,995 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:36:03,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:36:03,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:36:03,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:36:03,057 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:36:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:36:03,439 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:36:03,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:36:03,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:36:03,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:36:03,556 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:36:03,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:36:03,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:36:03,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:36:03,585 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-10-26 23:36:05,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:36:05,712 INFO L93 Difference]: Finished difference Result 785 states and 1378 transitions. [2018-10-26 23:36:05,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:36:05,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2018-10-26 23:36:05,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:36:05,735 INFO L225 Difference]: With dead ends: 785 [2018-10-26 23:36:05,736 INFO L226 Difference]: Without dead ends: 490 [2018-10-26 23:36:05,744 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:36:05,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2018-10-26 23:36:05,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 482. [2018-10-26 23:36:05,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-10-26 23:36:05,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 841 transitions. [2018-10-26 23:36:05,863 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 841 transitions. Word has length 27 [2018-10-26 23:36:05,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:36:05,864 INFO L481 AbstractCegarLoop]: Abstraction has 482 states and 841 transitions. [2018-10-26 23:36:05,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:36:05,864 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 841 transitions. [2018-10-26 23:36:05,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-26 23:36:05,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:36:05,874 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:36:05,875 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:36:05,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:36:05,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1966736396, now seen corresponding path program 1 times [2018-10-26 23:36:05,876 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:36:05,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:36:05,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:36:05,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:36:05,879 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:36:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:36:06,246 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:36:06,247 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:36:06,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:36:06,247 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:36:06,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:36:06,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:36:06,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:36:06,251 INFO L87 Difference]: Start difference. First operand 482 states and 841 transitions. Second operand 6 states. [2018-10-26 23:36:12,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:36:12,691 INFO L93 Difference]: Finished difference Result 1761 states and 3209 transitions. [2018-10-26 23:36:12,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 23:36:12,692 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2018-10-26 23:36:12,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:36:12,704 INFO L225 Difference]: With dead ends: 1761 [2018-10-26 23:36:12,704 INFO L226 Difference]: Without dead ends: 1285 [2018-10-26 23:36:12,711 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-26 23:36:12,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2018-10-26 23:36:12,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1253. [2018-10-26 23:36:12,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1253 states. [2018-10-26 23:36:12,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1989 transitions. [2018-10-26 23:36:12,793 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1989 transitions. Word has length 97 [2018-10-26 23:36:12,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:36:12,793 INFO L481 AbstractCegarLoop]: Abstraction has 1253 states and 1989 transitions. [2018-10-26 23:36:12,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:36:12,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1989 transitions. [2018-10-26 23:36:12,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-26 23:36:12,798 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:36:12,798 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:36:12,798 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:36:12,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:36:12,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1683891539, now seen corresponding path program 1 times [2018-10-26 23:36:12,799 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:36:12,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:36:12,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:36:12,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:36:12,801 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:36:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:36:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:36:13,082 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:36:13,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:36:13,082 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:36:13,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:36:13,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:36:13,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:36:13,084 INFO L87 Difference]: Start difference. First operand 1253 states and 1989 transitions. Second operand 6 states. [2018-10-26 23:36:15,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:36:15,974 INFO L93 Difference]: Finished difference Result 3468 states and 5572 transitions. [2018-10-26 23:36:15,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:36:15,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2018-10-26 23:36:15,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:36:15,989 INFO L225 Difference]: With dead ends: 3468 [2018-10-26 23:36:15,989 INFO L226 Difference]: Without dead ends: 2221 [2018-10-26 23:36:15,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:36:15,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2018-10-26 23:36:16,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 2196. [2018-10-26 23:36:16,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2196 states. [2018-10-26 23:36:16,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 3228 transitions. [2018-10-26 23:36:16,066 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 3228 transitions. Word has length 100 [2018-10-26 23:36:16,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:36:16,067 INFO L481 AbstractCegarLoop]: Abstraction has 2196 states and 3228 transitions. [2018-10-26 23:36:16,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:36:16,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 3228 transitions. [2018-10-26 23:36:16,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-26 23:36:16,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:36:16,073 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:36:16,073 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:36:16,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:36:16,074 INFO L82 PathProgramCache]: Analyzing trace with hash 353905340, now seen corresponding path program 1 times [2018-10-26 23:36:16,074 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:36:16,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:36:16,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:36:16,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:36:16,075 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:36:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:36:16,685 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-10-26 23:36:16,735 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:36:16,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:36:16,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-26 23:36:16,736 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:36:16,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 23:36:16,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 23:36:16,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-26 23:36:16,738 INFO L87 Difference]: Start difference. First operand 2196 states and 3228 transitions. Second operand 7 states. [2018-10-26 23:36:24,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:36:24,532 INFO L93 Difference]: Finished difference Result 5928 states and 8995 transitions. [2018-10-26 23:36:24,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 23:36:24,539 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2018-10-26 23:36:24,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:36:24,563 INFO L225 Difference]: With dead ends: 5928 [2018-10-26 23:36:24,563 INFO L226 Difference]: Without dead ends: 3738 [2018-10-26 23:36:24,578 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-26 23:36:24,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2018-10-26 23:36:24,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 3564. [2018-10-26 23:36:24,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3564 states. [2018-10-26 23:36:24,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 4994 transitions. [2018-10-26 23:36:24,710 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 4994 transitions. Word has length 101 [2018-10-26 23:36:24,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:36:24,710 INFO L481 AbstractCegarLoop]: Abstraction has 3564 states and 4994 transitions. [2018-10-26 23:36:24,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 23:36:24,710 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 4994 transitions. [2018-10-26 23:36:24,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-26 23:36:24,713 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:36:24,713 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:36:24,713 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:36:24,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:36:24,718 INFO L82 PathProgramCache]: Analyzing trace with hash 400123299, now seen corresponding path program 1 times [2018-10-26 23:36:24,718 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:36:24,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:36:24,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:36:24,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:36:24,720 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:36:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:36:24,897 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:36:24,898 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:36:24,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:36:24,898 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:36:24,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:36:24,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:36:24,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:36:24,899 INFO L87 Difference]: Start difference. First operand 3564 states and 4994 transitions. Second operand 3 states. [2018-10-26 23:36:27,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:36:27,832 INFO L93 Difference]: Finished difference Result 8045 states and 11702 transitions. [2018-10-26 23:36:27,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:36:27,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2018-10-26 23:36:27,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:36:27,856 INFO L225 Difference]: With dead ends: 8045 [2018-10-26 23:36:27,856 INFO L226 Difference]: Without dead ends: 4487 [2018-10-26 23:36:27,870 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:36:27,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4487 states. [2018-10-26 23:36:27,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4487 to 4426. [2018-10-26 23:36:27,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4426 states. [2018-10-26 23:36:27,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4426 states to 4426 states and 5874 transitions. [2018-10-26 23:36:27,977 INFO L78 Accepts]: Start accepts. Automaton has 4426 states and 5874 transitions. Word has length 159 [2018-10-26 23:36:27,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:36:27,978 INFO L481 AbstractCegarLoop]: Abstraction has 4426 states and 5874 transitions. [2018-10-26 23:36:27,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:36:27,978 INFO L276 IsEmpty]: Start isEmpty. Operand 4426 states and 5874 transitions. [2018-10-26 23:36:27,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-10-26 23:36:27,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:36:27,984 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:36:27,984 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:36:27,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:36:27,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1875107130, now seen corresponding path program 1 times [2018-10-26 23:36:27,985 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:36:27,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:36:27,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:36:27,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:36:27,986 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:36:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:36:28,344 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 23:36:28,344 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:36:28,344 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:36:28,345 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 176 with the following transitions: [2018-10-26 23:36:28,348 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [117], [119], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [869], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-26 23:36:28,434 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:36:28,434 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:36:33,265 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:36:55,510 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:36:55,512 INFO L272 AbstractInterpreter]: Visited 155 different actions 452 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-26 23:36:55,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:36:55,545 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:36:59,640 INFO L227 lantSequenceWeakener]: Weakened 30 states. On average, predicates are now at 76.22% of their original sizes. [2018-10-26 23:36:59,641 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:38:15,902 INFO L415 sIntCurrentIteration]: We unified 174 AI predicates to 174 [2018-10-26 23:38:15,903 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:38:15,903 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:38:15,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [5] total 23 [2018-10-26 23:38:15,904 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:38:15,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-26 23:38:15,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-26 23:38:15,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2018-10-26 23:38:15,905 INFO L87 Difference]: Start difference. First operand 4426 states and 5874 transitions. Second operand 20 states. Received shutdown request... [2018-10-26 23:40:06,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-26 23:40:06,977 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 23:40:06,982 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 23:40:06,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:40:06 BoogieIcfgContainer [2018-10-26 23:40:06,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:40:06,984 INFO L168 Benchmark]: Toolchain (without parser) took 250423.63 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 211.6 MB. Max. memory is 7.1 GB. [2018-10-26 23:40:06,985 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-26 23:40:06,986 INFO L168 Benchmark]: CACSL2BoogieTranslator took 939.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. [2018-10-26 23:40:06,986 INFO L168 Benchmark]: Boogie Procedure Inliner took 306.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -829.9 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-26 23:40:06,987 INFO L168 Benchmark]: Boogie Preprocessor took 174.78 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 23:40:06,988 INFO L168 Benchmark]: RCFGBuilder took 4818.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 190.7 MB). Peak memory consumption was 190.7 MB. Max. memory is 7.1 GB. [2018-10-26 23:40:06,989 INFO L168 Benchmark]: TraceAbstraction took 244175.39 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.0 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -996.8 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2018-10-26 23:40:06,994 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 939.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 306.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -829.9 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 174.78 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4818.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 190.7 MB). Peak memory consumption was 190.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 244175.39 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.0 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -996.8 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 66). Cancelled while BasicCegarLoop was constructing difference of abstraction (4426states) and FLOYD_HOARE automaton (currently 15 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (356 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 244.0s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 133.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 779 SDtfs, 4601 SDslu, 781 SDs, 0 SdLazy, 8184 SolverSat, 1590 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 226 GetRequests, 123 SyntacticMatches, 48 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 83.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4426occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 27.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9950434835492308 AbsIntWeakeningRatio, 0.12643678160919541 AbsIntAvgWeakeningVarsNumRemoved, 25.528735632183906 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 300 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 659 NumberOfCodeBlocks, 659 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 653 ConstructedInterpolants, 0 QuantifiedInterpolants, 359767 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 84/100 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown