java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/cggmp2005.c.i_3.bplTransformedIcfg_BEv2_2.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d19836b [2018-09-26 21:12:46,842 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 21:12:46,844 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 21:12:46,857 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 21:12:46,857 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 21:12:46,859 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 21:12:46,860 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 21:12:46,862 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 21:12:46,863 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 21:12:46,864 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 21:12:46,865 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-26 21:12:46,866 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-26 21:12:46,866 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-26 21:12:46,867 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-26 21:12:46,869 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-26 21:12:46,870 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-26 21:12:46,871 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-26 21:12:46,874 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-26 21:12:46,877 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-26 21:12:46,880 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-26 21:12:46,882 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-26 21:12:46,883 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-26 21:12:46,889 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-26 21:12:46,889 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-26 21:12:46,890 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-26 21:12:46,891 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-26 21:12:46,892 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-26 21:12:46,894 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-26 21:12:46,895 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-26 21:12:46,896 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-26 21:12:46,896 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-26 21:12:46,897 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-26 21:12:46,899 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-26 21:12:46,899 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-26 21:12:46,900 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-26 21:12:46,902 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-26 21:12:46,902 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-26 21:12:46,930 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 21:12:46,930 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 21:12:46,931 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-26 21:12:46,931 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-26 21:12:46,932 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-26 21:12:46,932 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-26 21:12:46,932 INFO L133 SettingsManager]: * Use SBE=true [2018-09-26 21:12:46,932 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-26 21:12:46,933 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-26 21:12:46,933 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-26 21:12:46,933 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-26 21:12:46,933 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-26 21:12:46,933 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-26 21:12:46,933 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-26 21:12:46,934 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-26 21:12:46,934 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-26 21:12:46,934 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-26 21:12:46,934 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-26 21:12:46,934 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-26 21:12:46,935 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-26 21:12:46,935 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-26 21:12:46,935 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-26 21:12:46,935 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-26 21:12:46,936 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 21:12:46,936 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-26 21:12:46,936 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-26 21:12:46,936 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-26 21:12:46,936 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-26 21:12:46,936 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-26 21:12:46,937 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 21:12:47,002 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 21:12:47,017 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 21:12:47,022 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 21:12:47,023 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 21:12:47,024 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 21:12:47,025 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/cggmp2005.c.i_3.bplTransformedIcfg_BEv2_2.bpl [2018-09-26 21:12:47,026 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/cggmp2005.c.i_3.bplTransformedIcfg_BEv2_2.bpl' [2018-09-26 21:12:47,085 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 21:12:47,088 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 21:12:47,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 21:12:47,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 21:12:47,089 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 21:12:47,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "cggmp2005.c.i_3.bplTransformedIcfg_BEv2_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:12:47" (1/1) ... [2018-09-26 21:12:47,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "cggmp2005.c.i_3.bplTransformedIcfg_BEv2_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:12:47" (1/1) ... [2018-09-26 21:12:47,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 21:12:47,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 21:12:47,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 21:12:47,133 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 21:12:47,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "cggmp2005.c.i_3.bplTransformedIcfg_BEv2_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:12:47" (1/1) ... [2018-09-26 21:12:47,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "cggmp2005.c.i_3.bplTransformedIcfg_BEv2_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:12:47" (1/1) ... [2018-09-26 21:12:47,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "cggmp2005.c.i_3.bplTransformedIcfg_BEv2_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:12:47" (1/1) ... [2018-09-26 21:12:47,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "cggmp2005.c.i_3.bplTransformedIcfg_BEv2_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:12:47" (1/1) ... [2018-09-26 21:12:47,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "cggmp2005.c.i_3.bplTransformedIcfg_BEv2_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:12:47" (1/1) ... [2018-09-26 21:12:47,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "cggmp2005.c.i_3.bplTransformedIcfg_BEv2_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:12:47" (1/1) ... [2018-09-26 21:12:47,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "cggmp2005.c.i_3.bplTransformedIcfg_BEv2_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:12:47" (1/1) ... [2018-09-26 21:12:47,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 21:12:47,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 21:12:47,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 21:12:47,157 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 21:12:47,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "cggmp2005.c.i_3.bplTransformedIcfg_BEv2_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:12:47" (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 [2018-09-26 21:12:47,241 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-09-26 21:12:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-26 21:12:47,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-26 21:12:47,433 INFO L346 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-26 21:12:47,434 INFO L202 PluginConnector]: Adding new model cggmp2005.c.i_3.bplTransformedIcfg_BEv2_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:12:47 BoogieIcfgContainer [2018-09-26 21:12:47,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 21:12:47,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 21:12:47,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 21:12:47,438 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 21:12:47,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cggmp2005.c.i_3.bplTransformedIcfg_BEv2_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:12:47" (1/2) ... [2018-09-26 21:12:47,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e18f72b and model type cggmp2005.c.i_3.bplTransformedIcfg_BEv2_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 09:12:47, skipping insertion in model container [2018-09-26 21:12:47,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cggmp2005.c.i_3.bplTransformedIcfg_BEv2_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:12:47" (2/2) ... [2018-09-26 21:12:47,442 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005.c.i_3.bplTransformedIcfg_BEv2_2.bpl [2018-09-26 21:12:47,451 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-26 21:12:47,459 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 21:12:47,513 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 21:12:47,514 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 21:12:47,515 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 21:12:47,515 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-26 21:12:47,515 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 21:12:47,515 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 21:12:47,515 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 21:12:47,515 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 21:12:47,516 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 21:12:47,530 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-09-26 21:12:47,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-26 21:12:47,537 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:12:47,538 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-26 21:12:47,539 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:12:47,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 21:12:47,546 INFO L82 PathProgramCache]: Analyzing trace with hash 30017, now seen corresponding path program 1 times [2018-09-26 21:12:47,548 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:12:47,549 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:12:47,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:12:47,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:12:47,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:12:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:12:47,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:12:47,695 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:12:47,696 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 21:12:47,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 21:12:47,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 21:12:47,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-26 21:12:47,714 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-09-26 21:12:47,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:12:47,746 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-09-26 21:12:47,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 21:12:47,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-09-26 21:12:47,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:12:47,762 INFO L225 Difference]: With dead ends: 9 [2018-09-26 21:12:47,762 INFO L226 Difference]: Without dead ends: 5 [2018-09-26 21:12:47,766 INFO L605 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 [2018-09-26 21:12:47,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-09-26 21:12:47,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-09-26 21:12:47,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-09-26 21:12:47,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-09-26 21:12:47,805 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-09-26 21:12:47,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:12:47,806 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-09-26 21:12:47,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 21:12:47,806 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-09-26 21:12:47,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-26 21:12:47,807 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:12:47,807 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-26 21:12:47,807 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:12:47,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 21:12:47,808 INFO L82 PathProgramCache]: Analyzing trace with hash 928552, now seen corresponding path program 1 times [2018-09-26 21:12:47,808 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:12:47,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:12:47,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:12:47,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:12:47,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:12:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:12:47,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:12:47,974 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:12:47,974 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2018-09-26 21:12:47,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:12:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:12:48,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:12:48,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:12:48,400 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:12:48,400 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2018-09-26 21:12:48,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-26 21:12:48,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-26 21:12:48,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-26 21:12:48,404 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 6 states. [2018-09-26 21:12:48,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:12:48,443 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-09-26 21:12:48,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-26 21:12:48,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2018-09-26 21:12:48,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:12:48,447 INFO L225 Difference]: With dead ends: 8 [2018-09-26 21:12:48,447 INFO L226 Difference]: Without dead ends: 6 [2018-09-26 21:12:48,449 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-26 21:12:48,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-09-26 21:12:48,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-09-26 21:12:48,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-09-26 21:12:48,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-09-26 21:12:48,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-09-26 21:12:48,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:12:48,453 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-09-26 21:12:48,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-26 21:12:48,453 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-09-26 21:12:48,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-09-26 21:12:48,455 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:12:48,455 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-09-26 21:12:48,455 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:12:48,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 21:12:48,456 INFO L82 PathProgramCache]: Analyzing trace with hash 28783137, now seen corresponding path program 2 times [2018-09-26 21:12:48,456 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:12:48,456 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:12:48,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:12:48,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:12:48,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:12:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:12:48,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:12:48,554 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:12:48,554 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:12:48,570 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:12:48,593 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:12:48,593 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:12:48,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:12:48,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:12:48,761 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:12:48,762 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-09-26 21:12:48,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-26 21:12:48,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-26 21:12:48,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-09-26 21:12:48,763 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 8 states. [2018-09-26 21:12:48,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:12:48,806 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-09-26 21:12:48,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-26 21:12:48,808 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 5 [2018-09-26 21:12:48,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:12:48,809 INFO L225 Difference]: With dead ends: 9 [2018-09-26 21:12:48,809 INFO L226 Difference]: Without dead ends: 7 [2018-09-26 21:12:48,810 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-09-26 21:12:48,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-26 21:12:48,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-26 21:12:48,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-26 21:12:48,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-26 21:12:48,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-09-26 21:12:48,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:12:48,814 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-26 21:12:48,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-26 21:12:48,814 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-26 21:12:48,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-26 21:12:48,815 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:12:48,815 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-09-26 21:12:48,815 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:12:48,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 21:12:48,816 INFO L82 PathProgramCache]: Analyzing trace with hash 892275272, now seen corresponding path program 3 times [2018-09-26 21:12:48,816 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:12:48,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:12:48,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:12:48,818 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:12:48,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:12:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:12:48,990 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:12:48,991 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:12:48,991 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:12:49,007 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:12:49,058 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-09-26 21:12:49,059 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:12:49,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:12:49,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:12:49,304 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:12:49,304 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2018-09-26 21:12:49,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-26 21:12:49,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-26 21:12:49,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-09-26 21:12:49,307 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 10 states. [2018-09-26 21:12:49,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:12:49,355 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-09-26 21:12:49,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-26 21:12:49,356 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 6 [2018-09-26 21:12:49,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:12:49,357 INFO L225 Difference]: With dead ends: 10 [2018-09-26 21:12:49,357 INFO L226 Difference]: Without dead ends: 8 [2018-09-26 21:12:49,358 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-09-26 21:12:49,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-09-26 21:12:49,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-09-26 21:12:49,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-09-26 21:12:49,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-09-26 21:12:49,361 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-09-26 21:12:49,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:12:49,361 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-09-26 21:12:49,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-26 21:12:49,362 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-09-26 21:12:49,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-26 21:12:49,362 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:12:49,362 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-09-26 21:12:49,363 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:12:49,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 21:12:49,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1890727681, now seen corresponding path program 4 times [2018-09-26 21:12:49,363 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:12:49,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:12:49,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:12:49,364 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:12:49,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:12:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:12:49,572 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:12:49,572 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:12:49,573 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:12:49,581 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:12:49,592 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:12:49,593 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:12:49,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:12:49,607 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:12:49,627 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:12:49,628 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-26 21:12:49,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-26 21:12:49,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-26 21:12:49,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-26 21:12:49,629 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-09-26 21:12:49,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:12:49,688 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-09-26 21:12:49,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-26 21:12:49,689 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-09-26 21:12:49,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:12:49,689 INFO L225 Difference]: With dead ends: 11 [2018-09-26 21:12:49,689 INFO L226 Difference]: Without dead ends: 9 [2018-09-26 21:12:49,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-26 21:12:49,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-09-26 21:12:49,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-09-26 21:12:49,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-26 21:12:49,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-09-26 21:12:49,693 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-09-26 21:12:49,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:12:49,694 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-09-26 21:12:49,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-26 21:12:49,694 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-09-26 21:12:49,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-26 21:12:49,694 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:12:49,695 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-09-26 21:12:49,695 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:12:49,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 21:12:49,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1516986008, now seen corresponding path program 5 times [2018-09-26 21:12:49,696 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:12:49,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:12:49,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:12:49,697 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:12:49,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:12:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:12:49,839 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:12:49,839 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:12:49,839 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-26 21:12:49,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-26 21:12:49,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-26 21:12:49,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-09-26 21:12:49,840 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 7 states. [2018-09-26 21:12:49,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:12:49,864 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-09-26 21:12:49,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-26 21:12:49,864 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2018-09-26 21:12:49,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:12:49,865 INFO L225 Difference]: With dead ends: 9 [2018-09-26 21:12:49,865 INFO L226 Difference]: Without dead ends: 0 [2018-09-26 21:12:49,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-09-26 21:12:49,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-26 21:12:49,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-26 21:12:49,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-26 21:12:49,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-26 21:12:49,867 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-09-26 21:12:49,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:12:49,867 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-26 21:12:49,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-26 21:12:49,867 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-26 21:12:49,867 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-26 21:12:49,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-26 21:12:50,116 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2018-09-26 21:12:50,121 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 37) no Hoare annotation was computed. [2018-09-26 21:12:50,121 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 37) no Hoare annotation was computed. [2018-09-26 21:12:50,121 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 36) no Hoare annotation was computed. [2018-09-26 21:12:50,121 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 37) no Hoare annotation was computed. [2018-09-26 21:12:50,122 INFO L422 ceAbstractionStarter]: At program point L26(lines 17 27) the Hoare annotation is: (or (and (<= ULTIMATE.start_main_~j~4 (+ ULTIMATE.start_main_~i~4 3)) (<= ULTIMATE.start_main_~i~4 5) (<= 8 ULTIMATE.start_main_~j~4)) (and (<= 10 ULTIMATE.start_main_~j~4) (<= ULTIMATE.start_main_~j~4 (+ ULTIMATE.start_main_~i~4 9)) (<= ULTIMATE.start_main_~i~4 1)) (and (<= ULTIMATE.start_main_~j~4 6) (<= 6 ULTIMATE.start_main_~j~4) (<= (+ ULTIMATE.start_main_~j~4 3) ULTIMATE.start_main_~i~4)) (and (<= ULTIMATE.start_main_~i~4 3) (<= ULTIMATE.start_main_~j~4 (+ ULTIMATE.start_main_~i~4 6)) (<= 9 ULTIMATE.start_main_~j~4)) (and (<= 7 ULTIMATE.start_main_~j~4) (<= ULTIMATE.start_main_~i~4 7) (<= ULTIMATE.start_main_~j~4 ULTIMATE.start_main_~i~4))) [2018-09-26 21:12:50,122 INFO L422 ceAbstractionStarter]: At program point L34(lines 34 35) the Hoare annotation is: false [2018-09-26 21:12:50,134 INFO L202 PluginConnector]: Adding new model cggmp2005.c.i_3.bplTransformedIcfg_BEv2_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.09 09:12:50 BoogieIcfgContainer [2018-09-26 21:12:50,134 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-26 21:12:50,135 INFO L168 Benchmark]: Toolchain (without parser) took 3050.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 161.3 MB). Peak memory consumption was 161.3 MB. Max. memory is 7.1 GB. [2018-09-26 21:12:50,137 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 21:12:50,138 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.97 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 21:12:50,138 INFO L168 Benchmark]: Boogie Preprocessor took 24.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 21:12:50,139 INFO L168 Benchmark]: RCFGBuilder took 277.59 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-26 21:12:50,140 INFO L168 Benchmark]: TraceAbstraction took 2699.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 7.1 GB. [2018-09-26 21:12:50,144 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 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 42.97 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 277.59 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2699.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: 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: 17]: Loop Invariant Derived loop invariant: (((((main_~j~4 <= main_~i~4 + 3 && main_~i~4 <= 5) && 8 <= main_~j~4) || ((10 <= main_~j~4 && main_~j~4 <= main_~i~4 + 9) && main_~i~4 <= 1)) || ((main_~j~4 <= 6 && 6 <= main_~j~4) && main_~j~4 + 3 <= main_~i~4)) || ((main_~i~4 <= 3 && main_~j~4 <= main_~i~4 + 6) && 9 <= main_~j~4)) || ((7 <= main_~j~4 && main_~i~4 <= 7) && main_~j~4 <= main_~i~4) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: false - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 2.6s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 16 SDtfs, 0 SDslu, 19 SDs, 0 SdLazy, 78 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 60 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 1089 SizeOfPredicates, 7 NumberOfNonLiveVariables, 110 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 15/55 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/cggmp2005.c.i_3.bplTransformedIcfg_BEv2_2.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-26_21-12-50-157.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/cggmp2005.c.i_3.bplTransformedIcfg_BEv2_2.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-26_21-12-50-157.csv Received shutdown request...