java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 19:13:20,737 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 19:13:20,743 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 19:13:20,759 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 19:13:20,759 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 19:13:20,761 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 19:13:20,762 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 19:13:20,764 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 19:13:20,766 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 19:13:20,767 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 19:13:20,768 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-12-03 19:13:20,818 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf [2018-12-03 19:13:20,841 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 19:13:20,841 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 19:13:20,842 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 19:13:20,842 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 19:13:20,842 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 19:13:20,845 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 19:13:20,845 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 19:13:20,846 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 19:13:20,846 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 19:13:20,846 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2018-12-03 19:13:20,846 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 19:13:20,846 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 19:13:20,847 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 19:13:20,847 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 19:13:20,848 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 19:13:20,848 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 19:13:20,849 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 19:13:20,849 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 19:13:20,849 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 19:13:20,849 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 19:13:20,849 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 19:13:20,850 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 19:13:20,850 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 19:13:20,850 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 19:13:20,850 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 19:13:20,850 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 19:13:20,852 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 19:13:20,852 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 19:13:20,853 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 19:13:20,853 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 19:13:20,853 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 19:13:20,853 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 19:13:20,853 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 19:13:20,854 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 19:13:20,854 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 19:13:20,854 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 19:13:20,854 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 19:13:20,854 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 19:13:20,855 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 19:13:20,855 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 19:13:20,909 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 19:13:20,924 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 19:13:20,931 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 19:13:20,933 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 19:13:20,933 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 19:13:20,934 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl [2018-12-03 19:13:20,935 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl' [2018-12-03 19:13:21,027 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 19:13:21,029 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 19:13:21,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 19:13:21,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 19:13:21,030 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 19:13:21,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:13:21" (1/1) ... [2018-12-03 19:13:21,062 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:13:21" (1/1) ... [2018-12-03 19:13:21,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 19:13:21,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 19:13:21,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 19:13:21,076 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 19:13:21,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:13:21" (1/1) ... [2018-12-03 19:13:21,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:13:21" (1/1) ... [2018-12-03 19:13:21,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:13:21" (1/1) ... [2018-12-03 19:13:21,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:13:21" (1/1) ... [2018-12-03 19:13:21,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:13:21" (1/1) ... [2018-12-03 19:13:21,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:13:21" (1/1) ... [2018-12-03 19:13:21,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:13:21" (1/1) ... [2018-12-03 19:13:21,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 19:13:21,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 19:13:21,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 19:13:21,138 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 19:13:21,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:13:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 19:13:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 19:13:21,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 19:13:21,825 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 19:13:21,826 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 19:13:21,826 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:13:21 BoogieIcfgContainer [2018-12-03 19:13:21,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 19:13:21,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 19:13:21,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 19:13:21,831 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 19:13:21,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:13:21" (1/2) ... [2018-12-03 19:13:21,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b2a85b and model type pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 07:13:21, skipping insertion in model container [2018-12-03 19:13:21,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:13:21" (2/2) ... [2018-12-03 19:13:21,834 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl [2018-12-03 19:13:21,845 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 19:13:21,853 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 19:13:21,871 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 19:13:21,905 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 19:13:21,906 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 19:13:21,906 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 19:13:21,906 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 19:13:21,906 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 19:13:21,906 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 19:13:21,907 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 19:13:21,907 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 19:13:21,923 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-12-03 19:13:21,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-03 19:13:21,929 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:13:21,930 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 19:13:21,933 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 19:13:21,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:13:21,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1823027031, now seen corresponding path program 1 times [2018-12-03 19:13:21,942 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:13:22,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:13:22,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:13:22,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:13:22,002 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:13:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:13:22,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 19:13:22,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 19:13:22,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 19:13:22,211 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 19:13:22,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 19:13:22,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 19:13:22,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:13:22,232 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2018-12-03 19:13:22,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:13:22,280 INFO L93 Difference]: Finished difference Result 45 states and 62 transitions. [2018-12-03 19:13:22,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 19:13:22,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-12-03 19:13:22,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:13:22,293 INFO L225 Difference]: With dead ends: 45 [2018-12-03 19:13:22,294 INFO L226 Difference]: Without dead ends: 29 [2018-12-03 19:13:22,298 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:13:22,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-12-03 19:13:22,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2018-12-03 19:13:22,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-03 19:13:22,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2018-12-03 19:13:22,341 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2018-12-03 19:13:22,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:13:22,341 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2018-12-03 19:13:22,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 19:13:22,343 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2018-12-03 19:13:22,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-03 19:13:22,344 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:13:22,344 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 19:13:22,344 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 19:13:22,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:13:22,345 INFO L82 PathProgramCache]: Analyzing trace with hash 2081192469, now seen corresponding path program 1 times [2018-12-03 19:13:22,345 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:13:22,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:13:22,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:13:22,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:13:22,349 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:13:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:13:22,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 19:13:22,448 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 19:13:22,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 19:13:22,449 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 19:13:22,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 19:13:22,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 19:13:22,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:13:22,452 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 3 states. [2018-12-03 19:13:22,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:13:22,508 INFO L93 Difference]: Finished difference Result 79 states and 109 transitions. [2018-12-03 19:13:22,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 19:13:22,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-12-03 19:13:22,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:13:22,513 INFO L225 Difference]: With dead ends: 79 [2018-12-03 19:13:22,514 INFO L226 Difference]: Without dead ends: 53 [2018-12-03 19:13:22,515 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:13:22,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-12-03 19:13:22,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2018-12-03 19:13:22,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-12-03 19:13:22,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 70 transitions. [2018-12-03 19:13:22,531 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 70 transitions. Word has length 14 [2018-12-03 19:13:22,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:13:22,531 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 70 transitions. [2018-12-03 19:13:22,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 19:13:22,532 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 70 transitions. [2018-12-03 19:13:22,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-03 19:13:22,532 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:13:22,533 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 19:13:22,533 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 19:13:22,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:13:22,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1271845843, now seen corresponding path program 1 times [2018-12-03 19:13:22,534 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:13:22,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:13:22,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:13:22,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:13:22,537 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:13:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:13:22,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 19:13:22,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 19:13:22,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 19:13:22,780 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 19:13:22,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 19:13:22,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 19:13:22,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 19:13:22,789 INFO L87 Difference]: Start difference. First operand 51 states and 70 transitions. Second operand 4 states. [2018-12-03 19:13:22,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:13:22,946 INFO L93 Difference]: Finished difference Result 109 states and 147 transitions. [2018-12-03 19:13:22,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 19:13:22,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-12-03 19:13:22,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:13:22,958 INFO L225 Difference]: With dead ends: 109 [2018-12-03 19:13:22,958 INFO L226 Difference]: Without dead ends: 107 [2018-12-03 19:13:22,959 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-03 19:13:22,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-12-03 19:13:22,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 59. [2018-12-03 19:13:22,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-12-03 19:13:22,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 78 transitions. [2018-12-03 19:13:22,983 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 78 transitions. Word has length 14 [2018-12-03 19:13:22,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:13:22,984 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 78 transitions. [2018-12-03 19:13:22,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 19:13:22,984 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 78 transitions. [2018-12-03 19:13:22,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-03 19:13:22,985 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:13:22,985 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 19:13:22,985 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 19:13:22,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:13:22,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1271905425, now seen corresponding path program 1 times [2018-12-03 19:13:22,986 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:13:22,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:13:22,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:13:22,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:13:22,989 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:13:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:13:23,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 19:13:23,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 19:13:23,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 19:13:23,101 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 19:13:23,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 19:13:23,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 19:13:23,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:13:23,103 INFO L87 Difference]: Start difference. First operand 59 states and 78 transitions. Second operand 3 states. [2018-12-03 19:13:23,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:13:23,201 INFO L93 Difference]: Finished difference Result 143 states and 190 transitions. [2018-12-03 19:13:23,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 19:13:23,202 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-12-03 19:13:23,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:13:23,203 INFO L225 Difference]: With dead ends: 143 [2018-12-03 19:13:23,204 INFO L226 Difference]: Without dead ends: 85 [2018-12-03 19:13:23,204 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:13:23,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-12-03 19:13:23,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-12-03 19:13:23,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-12-03 19:13:23,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 111 transitions. [2018-12-03 19:13:23,245 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 111 transitions. Word has length 14 [2018-12-03 19:13:23,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:13:23,246 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 111 transitions. [2018-12-03 19:13:23,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 19:13:23,246 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 111 transitions. [2018-12-03 19:13:23,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-03 19:13:23,247 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:13:23,247 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 19:13:23,249 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 19:13:23,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:13:23,249 INFO L82 PathProgramCache]: Analyzing trace with hash -602166477, now seen corresponding path program 1 times [2018-12-03 19:13:23,250 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:13:23,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:13:23,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:13:23,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:13:23,252 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:13:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:13:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 19:13:23,406 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 19:13:23,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 19:13:23,406 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 19:13:23,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 19:13:23,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 19:13:23,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:13:23,407 INFO L87 Difference]: Start difference. First operand 85 states and 111 transitions. Second operand 3 states. [2018-12-03 19:13:23,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:13:23,490 INFO L93 Difference]: Finished difference Result 249 states and 327 transitions. [2018-12-03 19:13:23,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 19:13:23,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2018-12-03 19:13:23,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:13:23,493 INFO L225 Difference]: With dead ends: 249 [2018-12-03 19:13:23,493 INFO L226 Difference]: Without dead ends: 167 [2018-12-03 19:13:23,494 INFO L631 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 [2018-12-03 19:13:23,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-12-03 19:13:23,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 165. [2018-12-03 19:13:23,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-12-03 19:13:23,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 212 transitions. [2018-12-03 19:13:23,547 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 212 transitions. Word has length 26 [2018-12-03 19:13:23,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:13:23,547 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 212 transitions. [2018-12-03 19:13:23,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 19:13:23,547 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 212 transitions. [2018-12-03 19:13:23,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-03 19:13:23,549 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:13:23,549 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 19:13:23,550 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 19:13:23,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:13:23,550 INFO L82 PathProgramCache]: Analyzing trace with hash -209139467, now seen corresponding path program 1 times [2018-12-03 19:13:23,550 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:13:23,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:13:23,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:13:23,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:13:23,553 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:13:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:13:23,667 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 19:13:23,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 19:13:23,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 19:13:23,668 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 19:13:23,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 19:13:23,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 19:13:23,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:13:23,669 INFO L87 Difference]: Start difference. First operand 165 states and 212 transitions. Second operand 3 states. [2018-12-03 19:13:23,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:13:23,785 INFO L93 Difference]: Finished difference Result 489 states and 630 transitions. [2018-12-03 19:13:23,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 19:13:23,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2018-12-03 19:13:23,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:13:23,789 INFO L225 Difference]: With dead ends: 489 [2018-12-03 19:13:23,789 INFO L226 Difference]: Without dead ends: 327 [2018-12-03 19:13:23,790 INFO L631 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 [2018-12-03 19:13:23,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-12-03 19:13:23,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 325. [2018-12-03 19:13:23,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-12-03 19:13:23,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 408 transitions. [2018-12-03 19:13:23,883 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 408 transitions. Word has length 26 [2018-12-03 19:13:23,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:13:23,883 INFO L480 AbstractCegarLoop]: Abstraction has 325 states and 408 transitions. [2018-12-03 19:13:23,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 19:13:23,884 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 408 transitions. [2018-12-03 19:13:23,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-03 19:13:23,888 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:13:23,888 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 19:13:23,889 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 19:13:23,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:13:23,889 INFO L82 PathProgramCache]: Analyzing trace with hash -266397769, now seen corresponding path program 1 times [2018-12-03 19:13:23,889 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:13:23,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:13:23,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:13:23,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:13:23,892 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:13:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:13:24,092 WARN L180 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 13 [2018-12-03 19:13:24,222 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 19:13:24,223 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 19:13:24,223 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 19:13:24,224 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 27 with the following transitions: [2018-12-03 19:13:24,230 INFO L205 CegarAbsIntRunner]: [0], [2], [6], [8], [10], [14], [16], [18], [22], [24], [26], [30], [32], [34], [38], [40], [42], [46], [48], [50] [2018-12-03 19:13:24,294 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 19:13:24,295 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 19:13:25,268 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-12-03 19:13:54,152 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 19:13:54,154 INFO L272 AbstractInterpreter]: Visited 20 different actions 355 times. Merged at 19 different actions 244 times. Widened at 15 different actions 137 times. Found 74 fixpoints after 12 different actions. Largest state had 0 variables. [2018-12-03 19:13:54,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:13:54,169 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 19:13:54,169 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 19:13:54,169 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-12-03 19:13:54,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:13:54,189 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 19:13:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:13:54,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 19:13:54,674 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-03 19:13:54,674 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 19:13:55,139 WARN L180 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2018-12-03 19:13:55,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-03 19:13:55,178 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 19:13:55,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2018-12-03 19:13:55,178 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 19:13:55,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-03 19:13:55,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-03 19:13:55,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-12-03 19:13:55,180 INFO L87 Difference]: Start difference. First operand 325 states and 408 transitions. Second operand 8 states. [2018-12-03 19:13:55,419 WARN L180 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-12-03 19:13:55,890 WARN L180 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-12-03 19:13:56,281 WARN L180 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-12-03 19:13:56,496 WARN L180 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-12-03 19:13:57,080 WARN L180 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-12-03 19:13:57,326 WARN L180 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-12-03 19:13:57,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:13:57,840 INFO L93 Difference]: Finished difference Result 723 states and 911 transitions. [2018-12-03 19:13:57,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-03 19:13:57,841 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-12-03 19:13:57,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:13:57,844 INFO L225 Difference]: With dead ends: 723 [2018-12-03 19:13:57,844 INFO L226 Difference]: Without dead ends: 497 [2018-12-03 19:13:57,851 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2018-12-03 19:13:57,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2018-12-03 19:13:57,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 413. [2018-12-03 19:13:57,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-12-03 19:13:57,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 500 transitions. [2018-12-03 19:13:57,931 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 500 transitions. Word has length 26 [2018-12-03 19:13:57,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:13:57,931 INFO L480 AbstractCegarLoop]: Abstraction has 413 states and 500 transitions. [2018-12-03 19:13:57,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-03 19:13:57,932 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 500 transitions. [2018-12-03 19:13:57,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-12-03 19:13:57,935 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:13:57,935 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2018-12-03 19:13:57,935 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 19:13:57,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:13:57,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1932160773, now seen corresponding path program 2 times [2018-12-03 19:13:57,936 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:13:57,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:13:57,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:13:57,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:13:57,938 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:13:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:13:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-12-03 19:13:58,007 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 19:13:58,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 19:13:58,007 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 19:13:58,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 19:13:58,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 19:13:58,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:13:58,008 INFO L87 Difference]: Start difference. First operand 413 states and 500 transitions. Second operand 3 states. [2018-12-03 19:13:58,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:13:58,108 INFO L93 Difference]: Finished difference Result 769 states and 934 transitions. [2018-12-03 19:13:58,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 19:13:58,109 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-12-03 19:13:58,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:13:58,111 INFO L225 Difference]: With dead ends: 769 [2018-12-03 19:13:58,111 INFO L226 Difference]: Without dead ends: 359 [2018-12-03 19:13:58,112 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:13:58,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-12-03 19:13:58,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 309. [2018-12-03 19:13:58,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-12-03 19:13:58,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 360 transitions. [2018-12-03 19:13:58,164 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 360 transitions. Word has length 50 [2018-12-03 19:13:58,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:13:58,165 INFO L480 AbstractCegarLoop]: Abstraction has 309 states and 360 transitions. [2018-12-03 19:13:58,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 19:13:58,165 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 360 transitions. [2018-12-03 19:13:58,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-12-03 19:13:58,169 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:13:58,170 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2018-12-03 19:13:58,170 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 19:13:58,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:13:58,170 INFO L82 PathProgramCache]: Analyzing trace with hash -238903015, now seen corresponding path program 3 times [2018-12-03 19:13:58,170 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:13:58,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:13:58,175 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-03 19:13:58,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:13:58,175 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:13:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:13:58,337 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-12-03 19:13:58,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 19:13:58,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 19:13:58,338 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 19:13:58,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 19:13:58,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 19:13:58,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:13:58,339 INFO L87 Difference]: Start difference. First operand 309 states and 360 transitions. Second operand 3 states. [2018-12-03 19:13:58,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:13:58,354 INFO L93 Difference]: Finished difference Result 331 states and 383 transitions. [2018-12-03 19:13:58,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 19:13:58,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2018-12-03 19:13:58,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:13:58,356 INFO L225 Difference]: With dead ends: 331 [2018-12-03 19:13:58,356 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 19:13:58,357 INFO L631 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 [2018-12-03 19:13:58,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 19:13:58,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 19:13:58,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 19:13:58,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 19:13:58,358 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2018-12-03 19:13:58,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:13:58,358 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 19:13:58,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 19:13:58,358 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 19:13:58,358 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 19:13:58,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 19:13:58,394 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-03 19:13:58,408 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-03 19:13:58,423 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-03 19:13:58,429 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-03 19:13:58,617 WARN L180 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2018-12-03 19:13:58,750 WARN L180 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2018-12-03 19:13:58,985 WARN L180 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2018-12-03 19:13:59,283 INFO L444 ceAbstractionStarter]: At program point L353(lines 353 360) the Hoare annotation is: (and (<= (div ~mode4 256) 0) (= ~r1 0) (<= 1 ~mode4) (<= (div ~mode1 256) 0) (<= 1 ~mode1) (<= ~send4 127) (= 0 (+ ~nomsg 1)) (not (= ~p4_old ~nomsg)) (< 0 (+ (div ~send4 256) 1))) [2018-12-03 19:13:59,284 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 74 389) no Hoare annotation was computed. [2018-12-03 19:13:59,284 INFO L444 ceAbstractionStarter]: At program point L316(lines 310 317) the Hoare annotation is: (and (= ~r1 0) (<= (div ~mode1 256) 0) (<= 1 ~mode1) (<= ~send4 127) (= 0 (+ ~nomsg 1)) (< 0 (+ (div ~send4 256) 1)) (= ~mode4 (* 256 (div ~mode4 256)))) [2018-12-03 19:13:59,284 INFO L444 ceAbstractionStarter]: At program point L380(lines 380 387) the Hoare annotation is: false [2018-12-03 19:13:59,284 INFO L444 ceAbstractionStarter]: At program point L281(lines 281 291) the Hoare annotation is: (and (= ~r1 0) (= ~mode3 (* 256 (div ~mode3 256))) (<= (div ~mode1 256) 0) (<= 1 ~mode1) (<= ~send4 127) (= 0 (+ ~nomsg 1)) (< 0 (+ (div ~send4 256) 1)) (= ~mode4 (* 256 (div ~mode4 256)))) [2018-12-03 19:13:59,285 INFO L444 ceAbstractionStarter]: At program point L374(lines 374 381) the Hoare annotation is: (and (<= ULTIMATE.start_assert_~arg 1) (<= ULTIMATE.start_check_~tmp~100 1) (<= 1 ~mode4) (= 0 (+ ~nomsg 1)) (not (= ~p4_old ~nomsg)) (< 0 (+ (div ~send4 256) 1)) (<= (div ~mode4 256) 0) (= ~r1 0) (<= (div ~mode1 256) 0) (<= 1 ~mode1) (<= ~send4 127) (<= 1 ULTIMATE.start_assert_~arg) (<= 1 ULTIMATE.start_check_~tmp~100)) [2018-12-03 19:13:59,285 INFO L444 ceAbstractionStarter]: At program point L339(lines 330 340) the Hoare annotation is: (and (<= (div ~mode4 256) 0) (= ~r1 0) (<= (div ~mode1 256) 0) (<= 1 ~mode4) (<= 1 ~mode1) (not (= ~p4_new ~nomsg)) (<= ~send4 127) (= 0 (+ ~nomsg 1)) (< 0 (+ (div ~send4 256) 1))) [2018-12-03 19:13:59,285 INFO L444 ceAbstractionStarter]: At program point L364(lines 359 365) the Hoare annotation is: (and (<= (div ~mode4 256) 0) (= ~r1 0) (<= ULTIMATE.start_check_~tmp~100 1) (<= 1 ~mode4) (<= (div ~mode1 256) 0) (<= 1 ~mode1) (<= ~send4 127) (= 0 (+ ~nomsg 1)) (<= 1 ULTIMATE.start_check_~tmp~100) (not (= ~p4_old ~nomsg)) (< 0 (+ (div ~send4 256) 1))) [2018-12-03 19:13:59,285 INFO L444 ceAbstractionStarter]: At program point L296(lines 290 297) the Hoare annotation is: (and (= ~r1 0) (= ~mode3 (* 256 (div ~mode3 256))) (<= (div ~mode1 256) 0) (<= 1 ~mode1) (<= ~send4 127) (= 0 (+ ~nomsg 1)) (< 0 (+ (div ~send4 256) 1)) (= ~mode4 (* 256 (div ~mode4 256)))) [2018-12-03 19:13:59,286 INFO L444 ceAbstractionStarter]: At program point L261(lines 261 272) the Hoare annotation is: (let ((.cse4 (div ~mode4 256)) (.cse0 (= ~r1 0)) (.cse1 (div ~mode1 256)) (.cse2 (<= ~send4 127)) (.cse3 (= 0 (+ ~nomsg 1))) (.cse5 (< 0 (+ (div ~send4 256) 1)))) (or (and .cse0 (= ~mode3 (* 256 (div ~mode3 256))) (= ~mode1 (* 256 .cse1)) .cse2 .cse3 (= ~mode4 (* 256 .cse4)) .cse5) (and (<= .cse4 0) .cse0 (<= 1 ~mode4) (<= .cse1 0) (<= 1 ~mode1) .cse2 .cse3 (<= 1 ULTIMATE.start_check_~tmp~100) (not (= ~p4_old ~nomsg)) .cse5))) [2018-12-03 19:13:59,286 INFO L444 ceAbstractionStarter]: At program point L321(lines 321 331) the Hoare annotation is: (and (= ~r1 0) (<= (div ~mode1 256) 0) (<= 1 ~mode1) (<= ~send4 127) (= 0 (+ ~nomsg 1)) (< 0 (+ (div ~send4 256) 1)) (= ~mode4 (* 256 (div ~mode4 256)))) [2018-12-03 19:13:59,286 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 388) no Hoare annotation was computed. [2018-12-03 19:13:59,286 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 74 389) no Hoare annotation was computed. [2018-12-03 19:13:59,286 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 74 389) no Hoare annotation was computed. [2018-12-03 19:13:59,287 INFO L444 ceAbstractionStarter]: At program point L276(lines 271 277) the Hoare annotation is: (and (= ~r1 0) (= ~mode3 (* 256 (div ~mode3 256))) (<= (div ~mode1 256) 0) (<= 1 ~mode1) (<= ~send4 127) (= 0 (+ ~nomsg 1)) (< 0 (+ (div ~send4 256) 1)) (= ~mode4 (* 256 (div ~mode4 256)))) [2018-12-03 19:13:59,287 INFO L444 ceAbstractionStarter]: At program point L301(lines 301 311) the Hoare annotation is: (and (= ~r1 0) (= ~mode3 (* 256 (div ~mode3 256))) (<= (div ~mode1 256) 0) (<= 1 ~mode1) (<= ~send4 127) (= 0 (+ ~nomsg 1)) (< 0 (+ (div ~send4 256) 1)) (= ~mode4 (* 256 (div ~mode4 256)))) [2018-12-03 19:13:59,287 INFO L444 ceAbstractionStarter]: At program point L386(lines 254 386) the Hoare annotation is: (let ((.cse4 (div ~mode4 256)) (.cse0 (= ~r1 0)) (.cse1 (div ~mode1 256)) (.cse2 (<= ~send4 127)) (.cse3 (= 0 (+ ~nomsg 1))) (.cse5 (< 0 (+ (div ~send4 256) 1)))) (or (and .cse0 (= ~mode3 (* 256 (div ~mode3 256))) (= ~mode1 (* 256 .cse1)) .cse2 .cse3 (= ~mode4 (* 256 .cse4)) .cse5) (and (<= .cse4 0) .cse0 (<= 1 ~mode4) (<= .cse1 0) (<= 1 ~mode1) .cse2 .cse3 (<= 1 ULTIMATE.start_check_~tmp~100) (not (= ~p4_old ~nomsg)) .cse5))) [2018-12-03 19:13:59,304 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 07:13:59 BoogieIcfgContainer [2018-12-03 19:13:59,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 19:13:59,306 INFO L168 Benchmark]: Toolchain (without parser) took 38277.87 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: -1.9 GB). Peak memory consumption was 459.0 MB. Max. memory is 7.1 GB. [2018-12-03 19:13:59,307 INFO L168 Benchmark]: Boogie PL CUP Parser 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. [2018-12-03 19:13:59,307 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.25 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. [2018-12-03 19:13:59,308 INFO L168 Benchmark]: Boogie Preprocessor took 61.90 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. [2018-12-03 19:13:59,308 INFO L168 Benchmark]: RCFGBuilder took 689.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-12-03 19:13:59,309 INFO L168 Benchmark]: TraceAbstraction took 37477.26 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 416.7 MB. Max. memory is 7.1 GB. [2018-12-03 19:13:59,313 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser 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. * Boogie Procedure Inliner took 45.25 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. * Boogie Preprocessor took 61.90 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. * RCFGBuilder took 689.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 37477.26 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 416.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 388]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 261]: Loop Invariant Derived loop invariant: ((((((~r1 == 0 && ~mode3 == 256 * (~mode3 / 256)) && ~mode1 == 256 * (~mode1 / 256)) && ~send4 <= 127) && 0 == ~nomsg + 1) && ~mode4 == 256 * (~mode4 / 256)) && 0 < ~send4 / 256 + 1) || (((((((((~mode4 / 256 <= 0 && ~r1 == 0) && 1 <= ~mode4) && ~mode1 / 256 <= 0) && 1 <= ~mode1) && ~send4 <= 127) && 0 == ~nomsg + 1) && 1 <= check_~tmp~100) && !(~p4_old == ~nomsg)) && 0 < ~send4 / 256 + 1) - InvariantResult [Line: 254]: Loop Invariant Derived loop invariant: ((((((~r1 == 0 && ~mode3 == 256 * (~mode3 / 256)) && ~mode1 == 256 * (~mode1 / 256)) && ~send4 <= 127) && 0 == ~nomsg + 1) && ~mode4 == 256 * (~mode4 / 256)) && 0 < ~send4 / 256 + 1) || (((((((((~mode4 / 256 <= 0 && ~r1 == 0) && 1 <= ~mode4) && ~mode1 / 256 <= 0) && 1 <= ~mode1) && ~send4 <= 127) && 0 == ~nomsg + 1) && 1 <= check_~tmp~100) && !(~p4_old == ~nomsg)) && 0 < ~send4 / 256 + 1) - InvariantResult [Line: 359]: Loop Invariant Derived loop invariant: (((((((((~mode4 / 256 <= 0 && ~r1 == 0) && check_~tmp~100 <= 1) && 1 <= ~mode4) && ~mode1 / 256 <= 0) && 1 <= ~mode1) && ~send4 <= 127) && 0 == ~nomsg + 1) && 1 <= check_~tmp~100) && !(~p4_old == ~nomsg)) && 0 < ~send4 / 256 + 1 - InvariantResult [Line: 321]: Loop Invariant Derived loop invariant: (((((~r1 == 0 && ~mode1 / 256 <= 0) && 1 <= ~mode1) && ~send4 <= 127) && 0 == ~nomsg + 1) && 0 < ~send4 / 256 + 1) && ~mode4 == 256 * (~mode4 / 256) - InvariantResult [Line: 353]: Loop Invariant Derived loop invariant: (((((((~mode4 / 256 <= 0 && ~r1 == 0) && 1 <= ~mode4) && ~mode1 / 256 <= 0) && 1 <= ~mode1) && ~send4 <= 127) && 0 == ~nomsg + 1) && !(~p4_old == ~nomsg)) && 0 < ~send4 / 256 + 1 - InvariantResult [Line: 374]: Loop Invariant Derived loop invariant: (((((((((((assert_~arg <= 1 && check_~tmp~100 <= 1) && 1 <= ~mode4) && 0 == ~nomsg + 1) && !(~p4_old == ~nomsg)) && 0 < ~send4 / 256 + 1) && ~mode4 / 256 <= 0) && ~r1 == 0) && ~mode1 / 256 <= 0) && 1 <= ~mode1) && ~send4 <= 127) && 1 <= assert_~arg) && 1 <= check_~tmp~100 - InvariantResult [Line: 290]: Loop Invariant Derived loop invariant: ((((((~r1 == 0 && ~mode3 == 256 * (~mode3 / 256)) && ~mode1 / 256 <= 0) && 1 <= ~mode1) && ~send4 <= 127) && 0 == ~nomsg + 1) && 0 < ~send4 / 256 + 1) && ~mode4 == 256 * (~mode4 / 256) - InvariantResult [Line: 271]: Loop Invariant Derived loop invariant: ((((((~r1 == 0 && ~mode3 == 256 * (~mode3 / 256)) && ~mode1 / 256 <= 0) && 1 <= ~mode1) && ~send4 <= 127) && 0 == ~nomsg + 1) && 0 < ~send4 / 256 + 1) && ~mode4 == 256 * (~mode4 / 256) - InvariantResult [Line: 330]: Loop Invariant Derived loop invariant: (((((((~mode4 / 256 <= 0 && ~r1 == 0) && ~mode1 / 256 <= 0) && 1 <= ~mode4) && 1 <= ~mode1) && !(~p4_new == ~nomsg)) && ~send4 <= 127) && 0 == ~nomsg + 1) && 0 < ~send4 / 256 + 1 - InvariantResult [Line: 310]: Loop Invariant Derived loop invariant: (((((~r1 == 0 && ~mode1 / 256 <= 0) && 1 <= ~mode1) && ~send4 <= 127) && 0 == ~nomsg + 1) && 0 < ~send4 / 256 + 1) && ~mode4 == 256 * (~mode4 / 256) - InvariantResult [Line: 380]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 301]: Loop Invariant Derived loop invariant: ((((((~r1 == 0 && ~mode3 == 256 * (~mode3 / 256)) && ~mode1 / 256 <= 0) && 1 <= ~mode1) && ~send4 <= 127) && 0 == ~nomsg + 1) && 0 < ~send4 / 256 + 1) && ~mode4 == 256 * (~mode4 / 256) - InvariantResult [Line: 281]: Loop Invariant Derived loop invariant: ((((((~r1 == 0 && ~mode3 == 256 * (~mode3 / 256)) && ~mode1 / 256 <= 0) && 1 <= ~mode1) && ~send4 <= 127) && 0 == ~nomsg + 1) && 0 < ~send4 / 256 + 1) && ~mode4 == 256 * (~mode4 / 256) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. SAFE Result, 37.3s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 3.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.9s HoareAnnotationTime, HoareTripleCheckerStatistics: 226 SDtfs, 204 SDslu, 181 SDs, 0 SdLazy, 157 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=413occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 29.9s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 190 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 13 PreInvPairs, 37 NumberOfFragments, 573 HoareAnnotationTreeSize, 13 FomulaSimplifications, 1293 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 272 NumberOfCodeBlocks, 272 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 33921 SizeOfPredicates, 7 NumberOfNonLiveVariables, 249 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 234/252 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...