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_PUPT.epf -i ../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/const1.i_3.bplTransformedIcfg_BEv2_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-9f4048f [2018-10-04 12:42:29,837 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 12:42:29,840 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 12:42:29,853 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 12:42:29,853 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 12:42:29,854 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 12:42:29,855 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 12:42:29,857 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 12:42:29,858 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 12:42:29,859 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 12:42:29,860 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-04 12:42:29,860 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-04 12:42:29,861 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-04 12:42:29,862 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-04 12:42:29,863 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-04 12:42:29,864 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-04 12:42:29,865 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-04 12:42:29,867 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-04 12:42:29,869 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-04 12:42:29,870 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-04 12:42:29,872 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-04 12:42:29,873 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-04 12:42:29,875 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-04 12:42:29,884 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-04 12:42:29,898 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 12:42:29,899 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 12:42:29,899 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 12:42:29,900 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 12:42:29,900 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 12:42:29,900 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 12:42:29,901 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 12:42:29,901 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 12:42:29,901 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 12:42:29,901 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 12:42:29,902 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 12:42:29,902 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 12:42:29,902 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 12:42:29,902 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 12:42:29,902 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 12:42:29,902 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 12:42:29,903 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 12:42:29,903 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 12:42:29,903 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 12:42:29,903 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 12:42:29,903 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 12:42:29,904 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 12:42:29,904 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 12:42:29,904 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 12:42:29,904 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 12:42:29,904 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 12:42:29,905 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 12:42:29,905 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 12:42:29,905 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 12:42:29,905 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 12:42:29,905 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-04 12:42:29,965 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 12:42:29,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 12:42:29,982 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 12:42:29,984 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 12:42:29,984 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 12:42:29,985 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/const1.i_3.bplTransformedIcfg_BEv2_6.bpl [2018-10-04 12:42:29,985 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/const1.i_3.bplTransformedIcfg_BEv2_6.bpl' [2018-10-04 12:42:30,036 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 12:42:30,038 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 12:42:30,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 12:42:30,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 12:42:30,042 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 12:42:30,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:42:30" (1/1) ... [2018-10-04 12:42:30,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:42:30" (1/1) ... [2018-10-04 12:42:30,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 12:42:30,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 12:42:30,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 12:42:30,085 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 12:42:30,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:42:30" (1/1) ... [2018-10-04 12:42:30,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:42:30" (1/1) ... [2018-10-04 12:42:30,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:42:30" (1/1) ... [2018-10-04 12:42:30,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:42:30" (1/1) ... [2018-10-04 12:42:30,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:42:30" (1/1) ... [2018-10-04 12:42:30,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:42:30" (1/1) ... [2018-10-04 12:42:30,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:42:30" (1/1) ... [2018-10-04 12:42:30,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 12:42:30,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 12:42:30,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 12:42:30,109 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 12:42:30,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:42:30" (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 [2018-10-04 12:42:30,190 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-04 12:42:30,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-04 12:42:30,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-04 12:42:30,379 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-04 12:42:30,380 INFO L202 PluginConnector]: Adding new model const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:42:30 BoogieIcfgContainer [2018-10-04 12:42:30,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 12:42:30,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 12:42:30,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 12:42:30,385 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 12:42:30,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:42:30" (1/2) ... [2018-10-04 12:42:30,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dca5d50 and model type const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 12:42:30, skipping insertion in model container [2018-10-04 12:42:30,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:42:30" (2/2) ... [2018-10-04 12:42:30,389 INFO L112 eAbstractionObserver]: Analyzing ICFG const1.i_3.bplTransformedIcfg_BEv2_6.bpl [2018-10-04 12:42:30,399 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 12:42:30,407 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 12:42:30,459 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 12:42:30,460 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 12:42:30,460 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 12:42:30,460 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 12:42:30,461 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 12:42:30,461 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 12:42:30,461 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 12:42:30,461 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 12:42:30,461 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 12:42:30,477 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-04 12:42:30,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-04 12:42:30,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:30,485 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-04 12:42:30,487 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:30,494 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:30,494 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2018-10-04 12:42:30,497 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:30,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:30,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:30,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:30,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:30,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:30,670 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 12:42:30,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 12:42:30,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 12:42:30,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 12:42:30,687 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:30,689 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-04 12:42:30,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:30,737 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-10-04 12:42:30,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 12:42:30,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-04 12:42:30,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:30,751 INFO L225 Difference]: With dead ends: 9 [2018-10-04 12:42:30,752 INFO L226 Difference]: Without dead ends: 5 [2018-10-04 12:42:30,755 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-04 12:42:30,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-04 12:42:30,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-04 12:42:30,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-04 12:42:30,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-04 12:42:30,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-04 12:42:30,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:30,789 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-04 12:42:30,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 12:42:30,789 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-04 12:42:30,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-04 12:42:30,790 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:30,790 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-04 12:42:30,790 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:30,791 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:30,791 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2018-10-04 12:42:30,791 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:30,791 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:30,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:30,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:30,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:30,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:30,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:30,917 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 [2018-10-04 12:42:30,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:30,972 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:31,047 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:31,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-04 12:42:31,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 12:42:31,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 12:42:31,048 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:31,048 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-10-04 12:42:31,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:31,103 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-04 12:42:31,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 12:42:31,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-10-04 12:42:31,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:31,105 INFO L225 Difference]: With dead ends: 8 [2018-10-04 12:42:31,105 INFO L226 Difference]: Without dead ends: 6 [2018-10-04 12:42:31,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 2 [2018-10-04 12:42:31,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-04 12:42:31,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-04 12:42:31,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-04 12:42:31,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-04 12:42:31,108 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-04 12:42:31,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:31,109 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-04 12:42:31,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 12:42:31,109 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-04 12:42:31,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-04 12:42:31,110 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:31,110 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-04 12:42:31,110 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:31,110 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:31,111 INFO L82 PathProgramCache]: Analyzing trace with hash 28844579, now seen corresponding path program 2 times [2018-10-04 12:42:31,111 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:31,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:31,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:31,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:31,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:31,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:31,214 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:31,214 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 [2018-10-04 12:42:31,226 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:42:31,245 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:42:31,245 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:31,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:31,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:31,301 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:31,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-04 12:42:31,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 12:42:31,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 12:42:31,303 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:31,303 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-10-04 12:42:31,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:31,335 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-04 12:42:31,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 12:42:31,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-10-04 12:42:31,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:31,336 INFO L225 Difference]: With dead ends: 9 [2018-10-04 12:42:31,336 INFO L226 Difference]: Without dead ends: 7 [2018-10-04 12:42:31,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 3 [2018-10-04 12:42:31,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-04 12:42:31,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-04 12:42:31,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-04 12:42:31,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-04 12:42:31,340 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-04 12:42:31,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:31,340 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-04 12:42:31,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 12:42:31,340 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-04 12:42:31,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-04 12:42:31,341 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:31,341 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-10-04 12:42:31,341 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:31,342 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:31,342 INFO L82 PathProgramCache]: Analyzing trace with hash 894183756, now seen corresponding path program 3 times [2018-10-04 12:42:31,342 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:31,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:31,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:31,344 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:31,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:31,434 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:31,434 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 [2018-10-04 12:42:31,444 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:42:31,490 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-04 12:42:31,490 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:31,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:31,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:31,598 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:31,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-04 12:42:31,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-04 12:42:31,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-04 12:42:31,599 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:31,599 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-10-04 12:42:31,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:31,633 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-04 12:42:31,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-04 12:42:31,633 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-10-04 12:42:31,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:31,634 INFO L225 Difference]: With dead ends: 10 [2018-10-04 12:42:31,634 INFO L226 Difference]: Without dead ends: 8 [2018-10-04 12:42:31,635 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 4 [2018-10-04 12:42:31,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-04 12:42:31,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-04 12:42:31,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-04 12:42:31,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-04 12:42:31,638 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-04 12:42:31,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:31,638 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-04 12:42:31,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-04 12:42:31,638 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-04 12:42:31,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-04 12:42:31,638 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:31,639 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-10-04 12:42:31,639 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:31,639 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:31,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1949894467, now seen corresponding path program 4 times [2018-10-04 12:42:31,639 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:31,639 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:31,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:31,641 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:31,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:31,951 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:31,951 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:31,951 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 [2018-10-04 12:42:31,959 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:42:31,977 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:42:31,977 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:31,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:32,028 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:32,049 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:32,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-04 12:42:32,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 12:42:32,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 12:42:32,051 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:32,051 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-10-04 12:42:32,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:32,101 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-04 12:42:32,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 12:42:32,102 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-10-04 12:42:32,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:32,103 INFO L225 Difference]: With dead ends: 11 [2018-10-04 12:42:32,103 INFO L226 Difference]: Without dead ends: 9 [2018-10-04 12:42:32,104 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 5 [2018-10-04 12:42:32,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-04 12:42:32,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-04 12:42:32,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-04 12:42:32,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-04 12:42:32,107 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-04 12:42:32,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:32,107 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-04 12:42:32,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 12:42:32,108 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-04 12:42:32,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-04 12:42:32,108 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:32,108 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-10-04 12:42:32,109 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:32,109 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:32,109 INFO L82 PathProgramCache]: Analyzing trace with hash 317188140, now seen corresponding path program 5 times [2018-10-04 12:42:32,109 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:32,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:32,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:32,111 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:32,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:32,250 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:32,250 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:32,250 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:32,261 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:42:32,328 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-04 12:42:32,328 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:32,330 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:32,438 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:32,463 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:32,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-04 12:42:32,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 12:42:32,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 12:42:32,464 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:32,464 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-10-04 12:42:32,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:32,491 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-04 12:42:32,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 12:42:32,492 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-04 12:42:32,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:32,493 INFO L225 Difference]: With dead ends: 12 [2018-10-04 12:42:32,494 INFO L226 Difference]: Without dead ends: 10 [2018-10-04 12:42:32,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 6 [2018-10-04 12:42:32,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-04 12:42:32,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-04 12:42:32,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-04 12:42:32,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-04 12:42:32,497 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-04 12:42:32,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:32,498 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-04 12:42:32,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 12:42:32,498 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-04 12:42:32,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-04 12:42:32,499 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:32,499 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-10-04 12:42:32,499 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:32,499 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:32,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1242899555, now seen corresponding path program 6 times [2018-10-04 12:42:32,500 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:32,500 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:32,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:32,501 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:32,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:32,622 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:32,623 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:32,623 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:32,633 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:42:32,657 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-04 12:42:32,657 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:32,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:32,697 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:32,719 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:32,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-04 12:42:32,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-04 12:42:32,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-04 12:42:32,720 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:32,720 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-10-04 12:42:32,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:32,774 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-04 12:42:32,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 12:42:32,774 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-10-04 12:42:32,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:32,775 INFO L225 Difference]: With dead ends: 13 [2018-10-04 12:42:32,775 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 12:42:32,775 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7 [2018-10-04 12:42:32,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 12:42:32,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-04 12:42:32,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-04 12:42:32,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-04 12:42:32,778 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-04 12:42:32,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:32,779 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-04 12:42:32,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-04 12:42:32,779 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-04 12:42:32,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 12:42:32,780 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:32,780 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-10-04 12:42:32,780 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:32,780 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:32,781 INFO L82 PathProgramCache]: Analyzing trace with hash -124817652, now seen corresponding path program 7 times [2018-10-04 12:42:32,781 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:32,781 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:32,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:32,782 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:32,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:33,347 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:33,347 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:33,347 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:33,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:33,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:33,439 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:33,462 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:33,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-04 12:42:33,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-04 12:42:33,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-04 12:42:33,463 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:33,463 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-10-04 12:42:33,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:33,490 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-04 12:42:33,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-04 12:42:33,491 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-10-04 12:42:33,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:33,491 INFO L225 Difference]: With dead ends: 14 [2018-10-04 12:42:33,492 INFO L226 Difference]: Without dead ends: 12 [2018-10-04 12:42:33,492 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.4s impTime 8 [2018-10-04 12:42:33,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-04 12:42:33,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-04 12:42:33,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-04 12:42:33,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-04 12:42:33,496 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-04 12:42:33,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:33,496 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-04 12:42:33,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-04 12:42:33,497 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-04 12:42:33,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-04 12:42:33,497 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:33,497 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-10-04 12:42:33,497 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:33,497 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:33,498 INFO L82 PathProgramCache]: Analyzing trace with hash 425621891, now seen corresponding path program 8 times [2018-10-04 12:42:33,498 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:33,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:33,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:33,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:33,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:33,787 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:33,787 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:33,788 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:33,796 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:42:33,821 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:42:33,821 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:33,823 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:33,884 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:33,904 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:33,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-04 12:42:33,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-04 12:42:33,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-04 12:42:33,906 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:33,906 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-10-04 12:42:33,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:33,949 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-04 12:42:33,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 12:42:33,950 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-10-04 12:42:33,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:33,951 INFO L225 Difference]: With dead ends: 15 [2018-10-04 12:42:33,952 INFO L226 Difference]: Without dead ends: 13 [2018-10-04 12:42:33,952 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 9 [2018-10-04 12:42:33,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-04 12:42:33,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-04 12:42:33,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-04 12:42:33,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-04 12:42:33,956 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-04 12:42:33,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:33,956 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-04 12:42:33,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-04 12:42:33,957 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-04 12:42:33,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-04 12:42:33,957 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:33,957 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-10-04 12:42:33,958 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:33,958 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:33,958 INFO L82 PathProgramCache]: Analyzing trace with hash 309378540, now seen corresponding path program 9 times [2018-10-04 12:42:33,958 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:33,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:33,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:33,959 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:33,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:34,181 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:34,181 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:34,193 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:42:34,234 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-04 12:42:34,234 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:34,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:34,311 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:34,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-04 12:42:34,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 12:42:34,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 12:42:34,312 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:34,313 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-10-04 12:42:34,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:34,367 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-04 12:42:34,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-04 12:42:34,367 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-10-04 12:42:34,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:34,368 INFO L225 Difference]: With dead ends: 16 [2018-10-04 12:42:34,368 INFO L226 Difference]: Without dead ends: 14 [2018-10-04 12:42:34,368 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 10 [2018-10-04 12:42:34,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-04 12:42:34,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-04 12:42:34,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-04 12:42:34,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-04 12:42:34,372 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-04 12:42:34,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:34,373 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-04 12:42:34,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 12:42:34,373 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-04 12:42:34,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-04 12:42:34,373 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:34,373 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-10-04 12:42:34,374 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:34,374 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:34,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1000801955, now seen corresponding path program 10 times [2018-10-04 12:42:34,374 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:34,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:34,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:34,375 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:34,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:34,531 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:34,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:34,531 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:34,543 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:42:34,566 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:42:34,566 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:34,568 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:34,668 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:34,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-04 12:42:34,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-04 12:42:34,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-04 12:42:34,669 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:34,669 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-10-04 12:42:34,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:34,730 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-04 12:42:34,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 12:42:34,731 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-10-04 12:42:34,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:34,732 INFO L225 Difference]: With dead ends: 17 [2018-10-04 12:42:34,733 INFO L226 Difference]: Without dead ends: 15 [2018-10-04 12:42:34,733 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 11 [2018-10-04 12:42:34,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-04 12:42:34,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-04 12:42:34,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-04 12:42:34,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-04 12:42:34,736 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-04 12:42:34,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:34,736 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-04 12:42:34,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-04 12:42:34,737 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-04 12:42:34,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-04 12:42:34,737 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:34,737 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-10-04 12:42:34,738 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:34,738 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:34,738 INFO L82 PathProgramCache]: Analyzing trace with hash 960091340, now seen corresponding path program 11 times [2018-10-04 12:42:34,738 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:34,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:34,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:34,739 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:34,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:34,933 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:34,933 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:34,933 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:34,942 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:42:34,970 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-04 12:42:34,970 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:34,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:35,017 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:35,039 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:35,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-04 12:42:35,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 12:42:35,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 12:42:35,040 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:35,040 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-10-04 12:42:35,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:35,094 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-04 12:42:35,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-04 12:42:35,094 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-10-04 12:42:35,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:35,095 INFO L225 Difference]: With dead ends: 18 [2018-10-04 12:42:35,095 INFO L226 Difference]: Without dead ends: 16 [2018-10-04 12:42:35,096 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.1s impTime 12 [2018-10-04 12:42:35,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-04 12:42:35,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-04 12:42:35,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-04 12:42:35,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-04 12:42:35,099 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-04 12:42:35,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:35,099 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-04 12:42:35,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 12:42:35,099 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-04 12:42:35,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-04 12:42:35,100 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:35,100 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-10-04 12:42:35,100 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:35,100 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:35,101 INFO L82 PathProgramCache]: Analyzing trace with hash -301937725, now seen corresponding path program 12 times [2018-10-04 12:42:35,101 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:35,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:35,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:35,102 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:35,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:35,358 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:35,359 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:35,359 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:35,366 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:42:35,390 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-04 12:42:35,391 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:35,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:35,465 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:35,491 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:35,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-04 12:42:35,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-04 12:42:35,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-04 12:42:35,492 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:35,493 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-10-04 12:42:35,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:35,530 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-04 12:42:35,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 12:42:35,530 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-10-04 12:42:35,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:35,531 INFO L225 Difference]: With dead ends: 19 [2018-10-04 12:42:35,532 INFO L226 Difference]: Without dead ends: 17 [2018-10-04 12:42:35,532 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 13 [2018-10-04 12:42:35,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-04 12:42:35,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-04 12:42:35,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-04 12:42:35,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-04 12:42:35,537 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-04 12:42:35,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:35,538 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-04 12:42:35,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-04 12:42:35,538 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-04 12:42:35,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-04 12:42:35,539 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:35,539 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-10-04 12:42:35,539 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:35,539 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:35,540 INFO L82 PathProgramCache]: Analyzing trace with hash -770133076, now seen corresponding path program 13 times [2018-10-04 12:42:35,540 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:35,540 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:35,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:35,541 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:35,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:35,735 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:35,736 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:35,736 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:35,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:35,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:35,855 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:35,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-04 12:42:35,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 12:42:35,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 12:42:35,856 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:35,856 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-10-04 12:42:36,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:36,041 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-04 12:42:36,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-04 12:42:36,042 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-10-04 12:42:36,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:36,042 INFO L225 Difference]: With dead ends: 20 [2018-10-04 12:42:36,042 INFO L226 Difference]: Without dead ends: 18 [2018-10-04 12:42:36,043 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 14 [2018-10-04 12:42:36,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-04 12:42:36,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-04 12:42:36,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-04 12:42:36,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-04 12:42:36,046 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-04 12:42:36,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:36,046 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-04 12:42:36,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 12:42:36,046 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-04 12:42:36,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-04 12:42:36,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:36,047 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-10-04 12:42:36,047 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:36,047 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:36,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1895680227, now seen corresponding path program 14 times [2018-10-04 12:42:36,048 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:36,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:36,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:36,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:36,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:36,375 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:36,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:36,375 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:36,383 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:42:36,425 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:42:36,425 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:36,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:36,693 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:36,713 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:36,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-04 12:42:36,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-04 12:42:36,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-04 12:42:36,715 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:36,715 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-10-04 12:42:36,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:36,772 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-04 12:42:36,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-04 12:42:36,773 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-10-04 12:42:36,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:36,774 INFO L225 Difference]: With dead ends: 21 [2018-10-04 12:42:36,774 INFO L226 Difference]: Without dead ends: 19 [2018-10-04 12:42:36,775 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 15 [2018-10-04 12:42:36,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-04 12:42:36,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-04 12:42:36,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-04 12:42:36,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-04 12:42:36,779 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-04 12:42:36,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:36,780 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-04 12:42:36,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-04 12:42:36,780 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-04 12:42:36,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-04 12:42:36,781 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:36,781 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-10-04 12:42:36,781 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:36,781 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:36,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1363453300, now seen corresponding path program 15 times [2018-10-04 12:42:36,782 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:36,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:36,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:36,783 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:36,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:37,094 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:37,095 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:37,095 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:37,106 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:42:37,208 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-04 12:42:37,208 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:37,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:37,385 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:37,405 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:37,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-04 12:42:37,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-04 12:42:37,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-04 12:42:37,406 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:37,406 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-10-04 12:42:37,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:37,455 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-04 12:42:37,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-04 12:42:37,455 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-10-04 12:42:37,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:37,456 INFO L225 Difference]: With dead ends: 22 [2018-10-04 12:42:37,456 INFO L226 Difference]: Without dead ends: 20 [2018-10-04 12:42:37,457 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 16 [2018-10-04 12:42:37,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-04 12:42:37,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-04 12:42:37,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-04 12:42:37,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-04 12:42:37,461 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-04 12:42:37,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:37,462 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-04 12:42:37,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-04 12:42:37,463 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-04 12:42:37,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-04 12:42:37,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:37,464 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-10-04 12:42:37,464 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:37,464 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:37,464 INFO L82 PathProgramCache]: Analyzing trace with hash 682622467, now seen corresponding path program 16 times [2018-10-04 12:42:37,464 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:37,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:37,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:37,465 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:37,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:37,901 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:37,902 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:37,902 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:37,910 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:42:37,951 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:42:37,951 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:37,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:38,099 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:38,120 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:38,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-04 12:42:38,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-04 12:42:38,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-04 12:42:38,121 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:38,121 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-10-04 12:42:38,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:38,212 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-04 12:42:38,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-04 12:42:38,214 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-10-04 12:42:38,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:38,214 INFO L225 Difference]: With dead ends: 23 [2018-10-04 12:42:38,215 INFO L226 Difference]: Without dead ends: 21 [2018-10-04 12:42:38,215 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 17 [2018-10-04 12:42:38,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-04 12:42:38,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-04 12:42:38,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-04 12:42:38,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-04 12:42:38,222 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-10-04 12:42:38,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:38,222 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-04 12:42:38,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-04 12:42:38,224 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-04 12:42:38,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-04 12:42:38,224 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:38,224 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-10-04 12:42:38,225 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:38,225 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:38,225 INFO L82 PathProgramCache]: Analyzing trace with hash -313538196, now seen corresponding path program 17 times [2018-10-04 12:42:38,225 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:38,225 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:38,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:38,227 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:38,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:38,516 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:38,517 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:38,517 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:38,526 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:42:38,544 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-04 12:42:38,544 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:38,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:38,620 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:38,640 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:38,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-04 12:42:38,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-04 12:42:38,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-04 12:42:38,641 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:38,641 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-10-04 12:42:38,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:38,677 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-04 12:42:38,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-04 12:42:38,677 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-10-04 12:42:38,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:38,678 INFO L225 Difference]: With dead ends: 24 [2018-10-04 12:42:38,678 INFO L226 Difference]: Without dead ends: 22 [2018-10-04 12:42:38,679 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 18 [2018-10-04 12:42:38,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-04 12:42:38,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-04 12:42:38,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-04 12:42:38,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-04 12:42:38,683 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-10-04 12:42:38,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:38,683 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-04 12:42:38,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-04 12:42:38,683 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-04 12:42:38,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-04 12:42:38,684 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:38,684 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-10-04 12:42:38,684 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:38,685 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:38,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1129747677, now seen corresponding path program 18 times [2018-10-04 12:42:38,685 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:38,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:38,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:38,686 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:38,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:38,995 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:38,997 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:38,998 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:38,998 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:39,014 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:42:39,060 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-04 12:42:39,060 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:39,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:39,213 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:39,245 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:39,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-04 12:42:39,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-04 12:42:39,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-04 12:42:39,246 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:39,246 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-10-04 12:42:39,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:39,334 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-04 12:42:39,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-04 12:42:39,335 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-10-04 12:42:39,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:39,336 INFO L225 Difference]: With dead ends: 25 [2018-10-04 12:42:39,336 INFO L226 Difference]: Without dead ends: 23 [2018-10-04 12:42:39,336 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 6 [2018-10-04 12:42:39,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-04 12:42:39,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-04 12:42:39,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-04 12:42:39,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-04 12:42:39,340 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-10-04 12:42:39,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:39,340 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-04 12:42:39,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-04 12:42:39,341 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-04 12:42:39,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-04 12:42:39,341 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:39,341 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-10-04 12:42:39,342 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:39,342 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:39,342 INFO L82 PathProgramCache]: Analyzing trace with hash -662437812, now seen corresponding path program 19 times [2018-10-04 12:42:39,342 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:39,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:39,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:39,343 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:39,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:39,643 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:39,664 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:39,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:39,665 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:39,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:39,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:39,873 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:39,894 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:39,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-04 12:42:39,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-04 12:42:39,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-04 12:42:39,895 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:39,895 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-10-04 12:42:39,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:39,938 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-04 12:42:39,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-04 12:42:39,939 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-10-04 12:42:39,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:39,940 INFO L225 Difference]: With dead ends: 26 [2018-10-04 12:42:39,940 INFO L226 Difference]: Without dead ends: 24 [2018-10-04 12:42:39,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 7 [2018-10-04 12:42:39,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-04 12:42:39,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-04 12:42:39,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-04 12:42:39,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-04 12:42:39,943 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-10-04 12:42:39,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:39,943 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-04 12:42:39,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-04 12:42:39,943 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-04 12:42:39,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-04 12:42:39,944 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:39,944 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-10-04 12:42:39,944 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:39,945 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:39,945 INFO L82 PathProgramCache]: Analyzing trace with hash 939266115, now seen corresponding path program 20 times [2018-10-04 12:42:39,945 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:39,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:39,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:39,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:39,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:40,440 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:40,475 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:40,476 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:40,476 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:40,489 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:42:40,508 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:42:40,509 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:40,511 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:40,697 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:40,718 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:40,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-04 12:42:40,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-04 12:42:40,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-04 12:42:40,719 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:40,719 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-10-04 12:42:40,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:40,764 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-04 12:42:40,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-04 12:42:40,765 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-10-04 12:42:40,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:40,766 INFO L225 Difference]: With dead ends: 27 [2018-10-04 12:42:40,766 INFO L226 Difference]: Without dead ends: 25 [2018-10-04 12:42:40,766 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 8 [2018-10-04 12:42:40,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-04 12:42:40,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-04 12:42:40,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-04 12:42:40,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-04 12:42:40,770 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-10-04 12:42:40,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:40,770 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-04 12:42:40,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-04 12:42:40,771 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-04 12:42:40,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-04 12:42:40,771 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:40,772 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-10-04 12:42:40,772 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:40,772 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:40,772 INFO L82 PathProgramCache]: Analyzing trace with hash -947519700, now seen corresponding path program 21 times [2018-10-04 12:42:40,772 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:40,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:40,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:40,773 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:40,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:41,176 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:41,240 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:41,240 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:41,241 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:41,249 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:42:41,298 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-04 12:42:41,298 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:41,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:41,373 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:41,395 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:41,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-04 12:42:41,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-04 12:42:41,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-04 12:42:41,396 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:41,396 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-10-04 12:42:41,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:41,439 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-04 12:42:41,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-04 12:42:41,444 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-10-04 12:42:41,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:41,444 INFO L225 Difference]: With dead ends: 28 [2018-10-04 12:42:41,444 INFO L226 Difference]: Without dead ends: 26 [2018-10-04 12:42:41,444 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 9 [2018-10-04 12:42:41,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-04 12:42:41,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-04 12:42:41,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-04 12:42:41,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-04 12:42:41,448 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-10-04 12:42:41,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:41,449 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-04 12:42:41,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-04 12:42:41,449 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-04 12:42:41,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-04 12:42:41,450 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:41,450 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-10-04 12:42:41,450 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:41,450 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:41,450 INFO L82 PathProgramCache]: Analyzing trace with hash 691662179, now seen corresponding path program 22 times [2018-10-04 12:42:41,450 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:41,450 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:41,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:41,451 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:41,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:41,677 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:41,719 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:41,719 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:41,719 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:41,727 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:42:41,746 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:42:41,746 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:41,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:42,025 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:42,063 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:42,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-04 12:42:42,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-04 12:42:42,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-04 12:42:42,064 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:42,064 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-10-04 12:42:42,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:42,405 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-04 12:42:42,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-04 12:42:42,406 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-10-04 12:42:42,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:42,406 INFO L225 Difference]: With dead ends: 29 [2018-10-04 12:42:42,406 INFO L226 Difference]: Without dead ends: 27 [2018-10-04 12:42:42,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime 10 [2018-10-04 12:42:42,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-04 12:42:42,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-04 12:42:42,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-04 12:42:42,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-04 12:42:42,409 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-10-04 12:42:42,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:42,410 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-04 12:42:42,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-04 12:42:42,410 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-04 12:42:42,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-04 12:42:42,410 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:42,411 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-10-04 12:42:42,411 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:42,411 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:42,411 INFO L82 PathProgramCache]: Analyzing trace with hash -33307124, now seen corresponding path program 23 times [2018-10-04 12:42:42,411 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:42,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:42,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:42,412 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:42,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:42,649 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:42,689 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:42,690 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:42,690 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:42,699 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:42:42,731 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-04 12:42:42,732 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:42,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:42,830 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:42,850 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:42,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-04 12:42:42,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-04 12:42:42,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-04 12:42:42,851 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:42,851 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-10-04 12:42:42,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:42,885 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-04 12:42:42,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-04 12:42:42,892 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-10-04 12:42:42,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:42,893 INFO L225 Difference]: With dead ends: 30 [2018-10-04 12:42:42,893 INFO L226 Difference]: Without dead ends: 28 [2018-10-04 12:42:42,893 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 11 [2018-10-04 12:42:42,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-04 12:42:42,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-04 12:42:42,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-04 12:42:42,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-04 12:42:42,901 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-10-04 12:42:42,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:42,902 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-04 12:42:42,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-04 12:42:42,902 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-04 12:42:42,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-04 12:42:42,902 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:42,903 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-10-04 12:42:42,904 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:42,905 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:42,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1032519037, now seen corresponding path program 24 times [2018-10-04 12:42:42,905 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:42,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:42,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:42,906 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:42,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:43,131 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:43,227 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:43,227 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:43,227 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:43,247 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:42:43,278 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-04 12:42:43,278 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:43,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:43,507 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:43,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-04 12:42:43,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-04 12:42:43,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-04 12:42:43,507 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:43,508 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-10-04 12:42:43,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:43,606 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-04 12:42:43,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-04 12:42:43,607 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-10-04 12:42:43,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:43,607 INFO L225 Difference]: With dead ends: 31 [2018-10-04 12:42:43,608 INFO L226 Difference]: Without dead ends: 29 [2018-10-04 12:42:43,608 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 12 [2018-10-04 12:42:43,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-04 12:42:43,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-04 12:42:43,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-04 12:42:43,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-04 12:42:43,610 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-10-04 12:42:43,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:43,610 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-04 12:42:43,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-04 12:42:43,611 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-04 12:42:43,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-04 12:42:43,611 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:43,611 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-10-04 12:42:43,611 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:43,612 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:43,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1943317268, now seen corresponding path program 25 times [2018-10-04 12:42:43,612 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:43,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:43,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:43,613 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:43,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:44,493 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:44,656 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:44,657 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:44,657 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:44,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:44,688 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:44,759 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:44,779 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:44,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-04 12:42:44,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-04 12:42:44,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-04 12:42:44,780 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:44,781 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-10-04 12:42:44,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:44,832 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-04 12:42:44,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-04 12:42:44,833 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-10-04 12:42:44,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:44,833 INFO L225 Difference]: With dead ends: 32 [2018-10-04 12:42:44,833 INFO L226 Difference]: Without dead ends: 30 [2018-10-04 12:42:44,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 13 [2018-10-04 12:42:44,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-04 12:42:44,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-04 12:42:44,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-04 12:42:44,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-04 12:42:44,838 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-04 12:42:44,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:44,838 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-04 12:42:44,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-04 12:42:44,838 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-04 12:42:44,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-04 12:42:44,839 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:44,839 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-10-04 12:42:44,839 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:44,839 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:44,840 INFO L82 PathProgramCache]: Analyzing trace with hash -113291357, now seen corresponding path program 26 times [2018-10-04 12:42:44,840 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:44,840 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:44,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:44,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:44,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:45,485 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:45,730 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:45,731 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:45,731 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:45,740 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:42:45,806 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:42:45,806 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:45,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:45,967 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:45,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-04 12:42:45,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-04 12:42:45,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-04 12:42:45,968 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:45,969 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-10-04 12:42:46,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:46,051 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-04 12:42:46,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-04 12:42:46,052 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-10-04 12:42:46,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:46,052 INFO L225 Difference]: With dead ends: 33 [2018-10-04 12:42:46,053 INFO L226 Difference]: Without dead ends: 31 [2018-10-04 12:42:46,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 14 [2018-10-04 12:42:46,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-04 12:42:46,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-04 12:42:46,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-04 12:42:46,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-04 12:42:46,057 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-10-04 12:42:46,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:46,057 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-04 12:42:46,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-04 12:42:46,057 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-04 12:42:46,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-04 12:42:46,058 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:46,058 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-10-04 12:42:46,058 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:46,058 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:46,058 INFO L82 PathProgramCache]: Analyzing trace with hash 782937036, now seen corresponding path program 27 times [2018-10-04 12:42:46,058 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:46,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:46,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:46,060 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:46,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:46,386 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:46,586 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:46,586 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:46,594 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:42:46,631 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-04 12:42:46,632 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:46,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:46,721 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:46,742 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:46,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-04 12:42:46,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-04 12:42:46,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-04 12:42:46,743 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:46,743 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-10-04 12:42:46,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:46,791 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-04 12:42:46,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-04 12:42:46,791 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-10-04 12:42:46,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:46,792 INFO L225 Difference]: With dead ends: 34 [2018-10-04 12:42:46,792 INFO L226 Difference]: Without dead ends: 32 [2018-10-04 12:42:46,793 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.4s impTime 15 [2018-10-04 12:42:46,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-04 12:42:46,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-04 12:42:46,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-04 12:42:46,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-04 12:42:46,798 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-10-04 12:42:46,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:46,799 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-04 12:42:46,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-04 12:42:46,799 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-04 12:42:46,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-04 12:42:46,799 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:46,799 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-10-04 12:42:46,800 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:46,800 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:46,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1498753853, now seen corresponding path program 28 times [2018-10-04 12:42:46,800 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:46,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:46,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:46,801 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:46,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:47,092 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:47,171 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:47,172 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:47,172 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:47,187 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:42:47,214 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:42:47,214 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:47,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:47,299 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:47,321 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:47,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-04 12:42:47,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-04 12:42:47,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-04 12:42:47,321 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:47,322 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-10-04 12:42:47,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:47,369 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-04 12:42:47,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-04 12:42:47,370 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-10-04 12:42:47,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:47,371 INFO L225 Difference]: With dead ends: 35 [2018-10-04 12:42:47,371 INFO L226 Difference]: Without dead ends: 33 [2018-10-04 12:42:47,371 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 16 [2018-10-04 12:42:47,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-04 12:42:47,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-04 12:42:47,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-04 12:42:47,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-04 12:42:47,375 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-10-04 12:42:47,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:47,375 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-04 12:42:47,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-04 12:42:47,375 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-04 12:42:47,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-04 12:42:47,376 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:47,376 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-10-04 12:42:47,376 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:47,377 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:47,377 INFO L82 PathProgramCache]: Analyzing trace with hash 783272620, now seen corresponding path program 29 times [2018-10-04 12:42:47,377 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:47,377 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:47,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:47,378 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:47,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:48,381 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:48,612 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:48,613 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:48,613 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:48,620 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:42:48,653 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-04 12:42:48,653 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:48,655 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:48,722 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:48,744 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:48,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-04 12:42:48,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-04 12:42:48,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-04 12:42:48,745 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:48,746 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-10-04 12:42:48,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:48,784 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-04 12:42:48,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-04 12:42:48,785 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-10-04 12:42:48,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:48,786 INFO L225 Difference]: With dead ends: 36 [2018-10-04 12:42:48,786 INFO L226 Difference]: Without dead ends: 34 [2018-10-04 12:42:48,786 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 17 [2018-10-04 12:42:48,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-04 12:42:48,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-04 12:42:48,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-04 12:42:48,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-04 12:42:48,790 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-10-04 12:42:48,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:48,790 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-04 12:42:48,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-04 12:42:48,790 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-04 12:42:48,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-04 12:42:48,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:48,791 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-10-04 12:42:48,791 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:48,791 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:48,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1488350749, now seen corresponding path program 30 times [2018-10-04 12:42:48,791 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:48,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:48,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:48,792 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:48,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:49,231 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:49,587 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:49,587 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:49,596 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:42:49,692 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-04 12:42:49,692 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:49,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:49,875 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:49,895 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:49,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-04 12:42:49,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-04 12:42:49,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-04 12:42:49,896 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:49,896 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-10-04 12:42:49,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:49,942 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-04 12:42:49,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-04 12:42:49,943 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-10-04 12:42:49,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:49,944 INFO L225 Difference]: With dead ends: 37 [2018-10-04 12:42:49,944 INFO L226 Difference]: Without dead ends: 35 [2018-10-04 12:42:49,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.4s impTime 18 [2018-10-04 12:42:49,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-04 12:42:49,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-04 12:42:49,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-04 12:42:49,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-04 12:42:49,948 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-10-04 12:42:49,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:49,948 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-04 12:42:49,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-04 12:42:49,948 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-04 12:42:49,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-04 12:42:49,949 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:49,949 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-10-04 12:42:49,949 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:49,949 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:49,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1105768844, now seen corresponding path program 31 times [2018-10-04 12:42:49,950 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:49,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:49,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:49,951 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:49,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:50,188 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:50,409 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:50,409 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:50,410 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:50,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:50,458 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:50,576 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:50,596 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:50,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-04 12:42:50,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-04 12:42:50,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-04 12:42:50,597 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:50,597 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-10-04 12:42:50,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:50,680 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-04 12:42:50,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-04 12:42:50,680 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-10-04 12:42:50,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:50,680 INFO L225 Difference]: With dead ends: 38 [2018-10-04 12:42:50,680 INFO L226 Difference]: Without dead ends: 36 [2018-10-04 12:42:50,681 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 19 [2018-10-04 12:42:50,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-04 12:42:50,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-04 12:42:50,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-04 12:42:50,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-04 12:42:50,684 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-10-04 12:42:50,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:50,684 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-04 12:42:50,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-04 12:42:50,685 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-04 12:42:50,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-04 12:42:50,685 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:50,686 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-10-04 12:42:50,686 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:50,686 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:50,686 INFO L82 PathProgramCache]: Analyzing trace with hash -80902397, now seen corresponding path program 32 times [2018-10-04 12:42:50,686 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:50,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:50,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:50,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:50,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:51,092 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:51,438 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:51,438 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:51,438 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:51,445 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:42:51,491 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:42:51,491 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:51,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:51,582 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:51,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-04 12:42:51,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-04 12:42:51,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-04 12:42:51,583 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:51,583 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-10-04 12:42:51,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:51,641 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-04 12:42:51,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-04 12:42:51,641 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-10-04 12:42:51,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:51,642 INFO L225 Difference]: With dead ends: 39 [2018-10-04 12:42:51,642 INFO L226 Difference]: Without dead ends: 37 [2018-10-04 12:42:51,642 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 20 [2018-10-04 12:42:51,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-04 12:42:51,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-04 12:42:51,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-04 12:42:51,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-04 12:42:51,646 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-10-04 12:42:51,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:51,646 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-04 12:42:51,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-04 12:42:51,646 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-04 12:42:51,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-04 12:42:51,647 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:51,647 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-10-04 12:42:51,647 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:51,647 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:51,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1786994796, now seen corresponding path program 33 times [2018-10-04 12:42:51,647 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:51,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:51,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:51,648 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:51,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:52,095 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:52,347 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:52,348 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:52,348 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:52,356 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:42:52,399 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-04 12:42:52,399 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:52,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:52,491 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:52,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-04 12:42:52,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-04 12:42:52,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-04 12:42:52,492 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:52,492 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-10-04 12:42:52,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:52,564 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-04 12:42:52,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-04 12:42:52,564 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-10-04 12:42:52,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:52,565 INFO L225 Difference]: With dead ends: 40 [2018-10-04 12:42:52,565 INFO L226 Difference]: Without dead ends: 38 [2018-10-04 12:42:52,565 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 21 [2018-10-04 12:42:52,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-04 12:42:52,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-04 12:42:52,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-04 12:42:52,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-04 12:42:52,568 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-10-04 12:42:52,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:52,569 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-04 12:42:52,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-04 12:42:52,569 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-04 12:42:52,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-04 12:42:52,569 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:52,570 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-10-04 12:42:52,570 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:52,570 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:52,570 INFO L82 PathProgramCache]: Analyzing trace with hash -437734365, now seen corresponding path program 34 times [2018-10-04 12:42:52,570 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:52,570 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:52,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:52,571 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:52,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:52,870 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:53,251 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:42:53,254 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:53,254 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:53,254 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:53,262 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:42:53,293 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:42:53,293 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:53,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:53,366 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:53,386 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:53,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-04 12:42:53,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-04 12:42:53,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-04 12:42:53,387 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:53,387 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-10-04 12:42:53,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:53,448 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-04 12:42:53,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-04 12:42:53,449 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-10-04 12:42:53,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:53,449 INFO L225 Difference]: With dead ends: 41 [2018-10-04 12:42:53,449 INFO L226 Difference]: Without dead ends: 39 [2018-10-04 12:42:53,450 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 7 [2018-10-04 12:42:53,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-04 12:42:53,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-04 12:42:53,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-04 12:42:53,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-04 12:42:53,453 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-10-04 12:42:53,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:53,454 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-04 12:42:53,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-04 12:42:53,454 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-04 12:42:53,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-04 12:42:53,454 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:53,454 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-10-04 12:42:53,456 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:53,456 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:53,456 INFO L82 PathProgramCache]: Analyzing trace with hash -684861620, now seen corresponding path program 35 times [2018-10-04 12:42:53,456 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:53,456 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:53,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:53,457 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:53,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:53,771 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:54,186 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:42:54,222 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:54,222 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:54,222 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:54,230 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:42:54,270 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-04 12:42:54,270 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:54,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:54,369 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:54,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-04 12:42:54,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-04 12:42:54,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-04 12:42:54,370 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:54,370 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-10-04 12:42:54,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:54,455 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-04 12:42:54,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-04 12:42:54,455 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-10-04 12:42:54,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:54,456 INFO L225 Difference]: With dead ends: 42 [2018-10-04 12:42:54,456 INFO L226 Difference]: Without dead ends: 40 [2018-10-04 12:42:54,456 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 8 [2018-10-04 12:42:54,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-04 12:42:54,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-04 12:42:54,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-04 12:42:54,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-04 12:42:54,458 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-10-04 12:42:54,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:54,459 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-04 12:42:54,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-04 12:42:54,459 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-04 12:42:54,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-04 12:42:54,459 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:54,459 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-10-04 12:42:54,459 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:54,460 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:54,460 INFO L82 PathProgramCache]: Analyzing trace with hash 244128067, now seen corresponding path program 36 times [2018-10-04 12:42:54,460 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:54,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:54,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:54,460 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:54,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:54,935 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:55,341 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:42:55,612 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:55,613 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:55,613 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:55,621 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:42:55,672 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-04 12:42:55,672 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:55,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:56,178 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:56,199 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:56,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-04 12:42:56,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-04 12:42:56,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-04 12:42:56,200 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:56,200 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-10-04 12:42:56,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:56,272 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-04 12:42:56,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-04 12:42:56,273 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-10-04 12:42:56,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:56,273 INFO L225 Difference]: With dead ends: 43 [2018-10-04 12:42:56,273 INFO L226 Difference]: Without dead ends: 41 [2018-10-04 12:42:56,274 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 0.8s impTime 9 [2018-10-04 12:42:56,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-04 12:42:56,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-04 12:42:56,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-04 12:42:56,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-04 12:42:56,276 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-10-04 12:42:56,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:56,277 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-04 12:42:56,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-04 12:42:56,277 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-04 12:42:56,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-04 12:42:56,278 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:56,278 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-10-04 12:42:56,278 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:56,278 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:56,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1021962708, now seen corresponding path program 37 times [2018-10-04 12:42:56,279 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:56,279 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:56,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:56,279 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:56,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:56,581 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:57,036 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:42:57,138 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:57,138 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:57,138 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:57,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:57,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:57,331 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:57,351 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:57,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-04 12:42:57,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-04 12:42:57,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-04 12:42:57,352 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:57,352 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-10-04 12:42:57,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:57,474 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-04 12:42:57,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-04 12:42:57,482 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-10-04 12:42:57,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:57,483 INFO L225 Difference]: With dead ends: 44 [2018-10-04 12:42:57,483 INFO L226 Difference]: Without dead ends: 42 [2018-10-04 12:42:57,483 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 10 [2018-10-04 12:42:57,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-04 12:42:57,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-04 12:42:57,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-04 12:42:57,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-04 12:42:57,485 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-10-04 12:42:57,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:57,485 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-04 12:42:57,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-04 12:42:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-04 12:42:57,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-04 12:42:57,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:57,489 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-10-04 12:42:57,489 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:57,489 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:57,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1616071069, now seen corresponding path program 38 times [2018-10-04 12:42:57,490 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:57,491 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:57,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:57,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:57,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:57,794 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:58,193 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:42:58,329 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:58,330 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:58,330 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:58,338 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:42:58,371 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:42:58,371 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:58,373 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:58,455 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:58,475 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:58,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-04 12:42:58,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-04 12:42:58,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-04 12:42:58,476 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:58,476 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-10-04 12:42:58,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:58,545 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-04 12:42:58,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-04 12:42:58,546 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-10-04 12:42:58,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:58,546 INFO L225 Difference]: With dead ends: 45 [2018-10-04 12:42:58,546 INFO L226 Difference]: Without dead ends: 43 [2018-10-04 12:42:58,546 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 11 [2018-10-04 12:42:58,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-04 12:42:58,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-04 12:42:58,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-04 12:42:58,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-04 12:42:58,549 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-10-04 12:42:58,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:58,550 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-04 12:42:58,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-04 12:42:58,550 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-04 12:42:58,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-04 12:42:58,550 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:58,550 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-10-04 12:42:58,551 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:58,551 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:58,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1441406220, now seen corresponding path program 39 times [2018-10-04 12:42:58,551 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:58,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:58,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:58,552 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:58,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:58,770 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:58,958 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:42:59,061 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:59,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:59,061 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:42:59,068 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:42:59,110 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-04 12:42:59,110 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:59,112 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:59,199 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:59,219 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:59,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-04 12:42:59,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-04 12:42:59,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-04 12:42:59,220 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:59,220 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-10-04 12:42:59,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:59,317 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-04 12:42:59,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-04 12:42:59,317 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-10-04 12:42:59,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:59,318 INFO L225 Difference]: With dead ends: 46 [2018-10-04 12:42:59,318 INFO L226 Difference]: Without dead ends: 44 [2018-10-04 12:42:59,318 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 12 [2018-10-04 12:42:59,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-04 12:42:59,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-04 12:42:59,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-04 12:42:59,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-04 12:42:59,321 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-10-04 12:42:59,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:59,321 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-04 12:42:59,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-04 12:42:59,321 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-04 12:42:59,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-04 12:42:59,322 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:59,322 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-10-04 12:42:59,322 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:59,322 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:59,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1733921667, now seen corresponding path program 40 times [2018-10-04 12:42:59,322 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:59,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:59,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:59,323 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:59,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:00,200 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:00,917 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:01,173 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:01,173 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:01,181 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:43:01,236 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:43:01,236 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:01,238 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:01,719 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:01,739 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:01,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-04 12:43:01,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-04 12:43:01,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-04 12:43:01,739 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:01,740 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-10-04 12:43:01,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:01,839 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-04 12:43:01,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-04 12:43:01,840 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-10-04 12:43:01,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:01,840 INFO L225 Difference]: With dead ends: 47 [2018-10-04 12:43:01,840 INFO L226 Difference]: Without dead ends: 45 [2018-10-04 12:43:01,841 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.3s impTime 13 [2018-10-04 12:43:01,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-04 12:43:01,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-04 12:43:01,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-04 12:43:01,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-04 12:43:01,843 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-10-04 12:43:01,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:01,843 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-04 12:43:01,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-04 12:43:01,844 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-04 12:43:01,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-04 12:43:01,844 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:01,845 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-10-04 12:43:01,845 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:01,845 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:01,845 INFO L82 PathProgramCache]: Analyzing trace with hash -2083001364, now seen corresponding path program 41 times [2018-10-04 12:43:01,845 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:01,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:01,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:01,846 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:01,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:02,231 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:02,651 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:02,925 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:02,926 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:02,926 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:02,933 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:43:02,975 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-04 12:43:02,975 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:02,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:03,060 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:03,086 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:03,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-04 12:43:03,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-04 12:43:03,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-04 12:43:03,087 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:03,087 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-10-04 12:43:03,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:03,342 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-10-04 12:43:03,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-04 12:43:03,343 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-10-04 12:43:03,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:03,344 INFO L225 Difference]: With dead ends: 48 [2018-10-04 12:43:03,344 INFO L226 Difference]: Without dead ends: 46 [2018-10-04 12:43:03,344 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 14 [2018-10-04 12:43:03,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-04 12:43:03,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-04 12:43:03,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-04 12:43:03,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-04 12:43:03,346 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-10-04 12:43:03,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:03,346 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-04 12:43:03,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-04 12:43:03,346 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-04 12:43:03,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-04 12:43:03,347 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:03,347 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-10-04 12:43:03,347 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:03,347 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:03,347 INFO L82 PathProgramCache]: Analyzing trace with hash -148531037, now seen corresponding path program 42 times [2018-10-04 12:43:03,348 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:03,348 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:03,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:03,348 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:03,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:04,571 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:04,975 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:05,225 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:05,225 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:05,225 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:05,232 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:43:05,271 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-04 12:43:05,272 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:05,274 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:05,372 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:05,392 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:05,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-04 12:43:05,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-04 12:43:05,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-04 12:43:05,393 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:05,393 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-10-04 12:43:05,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:05,466 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-04 12:43:05,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-04 12:43:05,466 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-10-04 12:43:05,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:05,467 INFO L225 Difference]: With dead ends: 49 [2018-10-04 12:43:05,467 INFO L226 Difference]: Without dead ends: 47 [2018-10-04 12:43:05,467 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 15 [2018-10-04 12:43:05,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-04 12:43:05,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-04 12:43:05,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-04 12:43:05,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-04 12:43:05,470 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-10-04 12:43:05,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:05,470 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-04 12:43:05,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-04 12:43:05,471 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-04 12:43:05,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-04 12:43:05,471 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:05,471 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-10-04 12:43:05,472 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:05,472 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:05,472 INFO L82 PathProgramCache]: Analyzing trace with hash -309493044, now seen corresponding path program 43 times [2018-10-04 12:43:05,472 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:05,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:05,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:05,473 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:05,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:05,986 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:06,777 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:07,147 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:07,148 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:07,148 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:07,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:07,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:07,297 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:07,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-04 12:43:07,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-04 12:43:07,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-04 12:43:07,298 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:07,298 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-10-04 12:43:07,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:07,458 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-04 12:43:07,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-04 12:43:07,459 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-10-04 12:43:07,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:07,459 INFO L225 Difference]: With dead ends: 50 [2018-10-04 12:43:07,459 INFO L226 Difference]: Without dead ends: 48 [2018-10-04 12:43:07,460 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.0s impTime 16 [2018-10-04 12:43:07,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-04 12:43:07,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-04 12:43:07,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-04 12:43:07,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-04 12:43:07,462 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-10-04 12:43:07,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:07,462 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-04 12:43:07,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-04 12:43:07,463 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-04 12:43:07,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-04 12:43:07,463 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:07,463 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-10-04 12:43:07,463 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:07,464 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:07,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1004347965, now seen corresponding path program 44 times [2018-10-04 12:43:07,464 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:07,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:07,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:07,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:07,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:07,717 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:08,090 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:08,453 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:08,453 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:08,461 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:43:08,498 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:43:08,498 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:08,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:08,602 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:08,622 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:08,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-04 12:43:08,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-04 12:43:08,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-04 12:43:08,623 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:08,623 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-10-04 12:43:08,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:08,704 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-04 12:43:08,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-04 12:43:08,705 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-10-04 12:43:08,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:08,706 INFO L225 Difference]: With dead ends: 51 [2018-10-04 12:43:08,706 INFO L226 Difference]: Without dead ends: 49 [2018-10-04 12:43:08,706 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime 17 [2018-10-04 12:43:08,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-04 12:43:08,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-04 12:43:08,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-04 12:43:08,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-04 12:43:08,708 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-10-04 12:43:08,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:08,708 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-04 12:43:08,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-04 12:43:08,709 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-04 12:43:08,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-04 12:43:08,709 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:08,709 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-10-04 12:43:08,710 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:08,710 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:08,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1070014036, now seen corresponding path program 45 times [2018-10-04 12:43:08,710 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:08,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:08,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:08,711 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:08,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:09,125 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:09,747 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:09,882 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:09,882 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:09,892 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:43:09,935 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-04 12:43:09,935 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:09,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:10,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:10,106 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:10,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-04 12:43:10,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-04 12:43:10,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-04 12:43:10,107 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:10,107 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-10-04 12:43:10,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:10,523 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-04 12:43:10,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-04 12:43:10,523 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-10-04 12:43:10,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:10,523 INFO L225 Difference]: With dead ends: 52 [2018-10-04 12:43:10,523 INFO L226 Difference]: Without dead ends: 50 [2018-10-04 12:43:10,524 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.7s impTime 18 [2018-10-04 12:43:10,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-04 12:43:10,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-04 12:43:10,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-04 12:43:10,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-04 12:43:10,526 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-10-04 12:43:10,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:10,526 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-04 12:43:10,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-04 12:43:10,526 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-04 12:43:10,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-04 12:43:10,527 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:10,527 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-10-04 12:43:10,527 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:10,528 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:10,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1189305059, now seen corresponding path program 46 times [2018-10-04 12:43:10,528 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:10,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:10,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:10,529 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:10,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:11,100 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:11,590 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:12,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:12,073 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:12,073 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:12,080 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:43:12,127 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:43:12,127 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:12,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:12,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:12,297 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:12,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-04 12:43:12,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-04 12:43:12,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-04 12:43:12,297 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:12,298 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-10-04 12:43:12,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:12,398 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-04 12:43:12,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-04 12:43:12,399 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-10-04 12:43:12,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:12,399 INFO L225 Difference]: With dead ends: 53 [2018-10-04 12:43:12,399 INFO L226 Difference]: Without dead ends: 51 [2018-10-04 12:43:12,400 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.3s impTime 19 [2018-10-04 12:43:12,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-04 12:43:12,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-04 12:43:12,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-04 12:43:12,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-04 12:43:12,401 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-10-04 12:43:12,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:12,402 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-04 12:43:12,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-04 12:43:12,402 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-04 12:43:12,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-04 12:43:12,402 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:12,403 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-10-04 12:43:12,403 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:12,403 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:12,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1786247028, now seen corresponding path program 47 times [2018-10-04 12:43:12,403 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:12,403 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:12,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:12,404 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:12,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:12,975 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:13,176 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:13,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:13,487 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:13,495 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:43:13,547 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-04 12:43:13,547 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:13,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:13,665 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:13,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-04 12:43:13,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-04 12:43:13,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-04 12:43:13,666 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:13,666 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-10-04 12:43:13,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:13,743 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-04 12:43:13,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-04 12:43:13,744 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-10-04 12:43:13,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:13,745 INFO L225 Difference]: With dead ends: 54 [2018-10-04 12:43:13,745 INFO L226 Difference]: Without dead ends: 52 [2018-10-04 12:43:13,745 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 20 [2018-10-04 12:43:13,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-04 12:43:13,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-04 12:43:13,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-04 12:43:13,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-04 12:43:13,748 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-10-04 12:43:13,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:13,748 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-04 12:43:13,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-04 12:43:13,749 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-04 12:43:13,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-04 12:43:13,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:13,750 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-10-04 12:43:13,750 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:13,750 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:13,750 INFO L82 PathProgramCache]: Analyzing trace with hash 460918787, now seen corresponding path program 48 times [2018-10-04 12:43:13,750 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:13,750 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:13,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:13,751 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:13,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:14,162 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:14,425 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:14,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:14,636 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:14,636 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:14,643 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:43:14,693 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-04 12:43:14,694 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:14,696 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:14,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:14,806 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:14,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-04 12:43:14,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-04 12:43:14,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-04 12:43:14,807 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:14,807 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-10-04 12:43:14,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:14,882 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-04 12:43:14,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-04 12:43:14,882 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-10-04 12:43:14,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:14,883 INFO L225 Difference]: With dead ends: 55 [2018-10-04 12:43:14,883 INFO L226 Difference]: Without dead ends: 53 [2018-10-04 12:43:14,884 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 21 [2018-10-04 12:43:14,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-04 12:43:14,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-04 12:43:14,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-04 12:43:14,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-04 12:43:14,887 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-10-04 12:43:14,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:14,887 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-04 12:43:14,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-04 12:43:14,887 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-04 12:43:14,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-04 12:43:14,888 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:14,888 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-10-04 12:43:14,888 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:14,888 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:14,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1403582316, now seen corresponding path program 49 times [2018-10-04 12:43:14,889 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:14,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:14,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:14,889 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:14,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:15,393 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:15,680 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:15,945 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:15,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:15,950 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:15,950 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:15,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:16,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:16,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:16,214 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:16,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-04 12:43:16,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-04 12:43:16,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-04 12:43:16,215 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:16,215 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-10-04 12:43:16,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:16,341 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-10-04 12:43:16,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-04 12:43:16,341 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-10-04 12:43:16,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:16,341 INFO L225 Difference]: With dead ends: 56 [2018-10-04 12:43:16,341 INFO L226 Difference]: Without dead ends: 54 [2018-10-04 12:43:16,342 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.7s impTime 7 [2018-10-04 12:43:16,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-04 12:43:16,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-04 12:43:16,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-04 12:43:16,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-04 12:43:16,343 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-10-04 12:43:16,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:16,344 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-04 12:43:16,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-04 12:43:16,344 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-04 12:43:16,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-04 12:43:16,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:16,345 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-10-04 12:43:16,345 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:16,345 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:16,345 INFO L82 PathProgramCache]: Analyzing trace with hash 561380643, now seen corresponding path program 50 times [2018-10-04 12:43:16,345 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:16,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:16,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:16,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:16,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:16,621 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:16,792 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:17,148 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:17,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:17,220 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:17,220 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:17,228 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:43:17,270 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:43:17,270 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:17,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:17,399 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:17,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-04 12:43:17,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-04 12:43:17,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-04 12:43:17,400 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:17,400 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-10-04 12:43:17,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:17,483 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-04 12:43:17,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-04 12:43:17,484 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-10-04 12:43:17,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:17,484 INFO L225 Difference]: With dead ends: 57 [2018-10-04 12:43:17,484 INFO L226 Difference]: Without dead ends: 55 [2018-10-04 12:43:17,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 8 [2018-10-04 12:43:17,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-04 12:43:17,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-04 12:43:17,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-04 12:43:17,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-04 12:43:17,486 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-10-04 12:43:17,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:17,487 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-04 12:43:17,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-04 12:43:17,487 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-04 12:43:17,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-04 12:43:17,487 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:17,487 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-10-04 12:43:17,488 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:17,488 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:17,488 INFO L82 PathProgramCache]: Analyzing trace with hash 222932556, now seen corresponding path program 51 times [2018-10-04 12:43:17,488 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:17,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:17,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:17,489 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:17,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:17,866 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:18,260 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:18,895 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:19,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:19,015 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:19,015 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:19,022 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:43:19,074 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-04 12:43:19,074 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:19,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:19,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:19,416 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:19,416 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-04 12:43:19,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-04 12:43:19,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-04 12:43:19,417 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:19,417 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-10-04 12:43:19,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:19,512 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-04 12:43:19,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-04 12:43:19,512 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-10-04 12:43:19,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:19,513 INFO L225 Difference]: With dead ends: 58 [2018-10-04 12:43:19,513 INFO L226 Difference]: Without dead ends: 56 [2018-10-04 12:43:19,514 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime 9 [2018-10-04 12:43:19,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-04 12:43:19,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-04 12:43:19,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-04 12:43:19,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-04 12:43:19,516 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-10-04 12:43:19,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:19,516 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-04 12:43:19,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-04 12:43:19,516 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-04 12:43:19,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-04 12:43:19,517 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:19,517 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-10-04 12:43:19,517 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:19,517 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:19,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1679023549, now seen corresponding path program 52 times [2018-10-04 12:43:19,517 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:19,518 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:19,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:19,518 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:19,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:19,809 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:20,226 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:20,521 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:20,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:20,666 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:20,666 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:20,673 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:43:20,719 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:43:20,719 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:20,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:20,834 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:20,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-04 12:43:20,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-04 12:43:20,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-04 12:43:20,835 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:20,835 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-10-04 12:43:20,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:20,934 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-04 12:43:20,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-04 12:43:20,934 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-10-04 12:43:20,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:20,935 INFO L225 Difference]: With dead ends: 59 [2018-10-04 12:43:20,935 INFO L226 Difference]: Without dead ends: 57 [2018-10-04 12:43:20,935 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 10 [2018-10-04 12:43:20,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-04 12:43:20,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-04 12:43:20,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-04 12:43:20,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-04 12:43:20,938 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-10-04 12:43:20,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:20,938 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-04 12:43:20,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-04 12:43:20,938 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-04 12:43:20,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-04 12:43:20,939 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:20,939 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-10-04 12:43:20,939 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:20,939 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:20,939 INFO L82 PathProgramCache]: Analyzing trace with hash -510120660, now seen corresponding path program 53 times [2018-10-04 12:43:20,939 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:20,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:20,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:20,940 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:20,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:21,525 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:21,932 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:22,525 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:22,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:22,715 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:22,715 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:22,723 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:43:22,781 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-04 12:43:22,781 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:22,783 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:22,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:22,938 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:22,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-04 12:43:22,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-04 12:43:22,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-04 12:43:22,939 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:22,939 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-10-04 12:43:23,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:23,036 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-10-04 12:43:23,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-04 12:43:23,036 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-10-04 12:43:23,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:23,037 INFO L225 Difference]: With dead ends: 60 [2018-10-04 12:43:23,037 INFO L226 Difference]: Without dead ends: 58 [2018-10-04 12:43:23,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.5s impTime 11 [2018-10-04 12:43:23,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-04 12:43:23,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-04 12:43:23,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-04 12:43:23,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-04 12:43:23,040 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-10-04 12:43:23,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:23,040 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-04 12:43:23,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-04 12:43:23,041 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-04 12:43:23,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-04 12:43:23,041 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:23,041 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-10-04 12:43:23,041 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:23,041 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:23,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1366130531, now seen corresponding path program 54 times [2018-10-04 12:43:23,042 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:23,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:23,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:23,042 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:23,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:23,257 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:23,527 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:23,995 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:24,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:24,182 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:24,182 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:24,189 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:43:24,244 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-04 12:43:24,244 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:24,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:24,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:24,463 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:24,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-04 12:43:24,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-04 12:43:24,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-04 12:43:24,464 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:24,464 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-10-04 12:43:24,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:24,560 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-04 12:43:24,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-04 12:43:24,560 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-10-04 12:43:24,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:24,561 INFO L225 Difference]: With dead ends: 61 [2018-10-04 12:43:24,561 INFO L226 Difference]: Without dead ends: 59 [2018-10-04 12:43:24,561 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 12 [2018-10-04 12:43:24,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-04 12:43:24,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-04 12:43:24,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-04 12:43:24,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-04 12:43:24,563 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-10-04 12:43:24,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:24,563 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-04 12:43:24,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-04 12:43:24,563 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-04 12:43:24,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-04 12:43:24,564 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:24,564 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-10-04 12:43:24,564 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:24,564 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:24,564 INFO L82 PathProgramCache]: Analyzing trace with hash -599624692, now seen corresponding path program 55 times [2018-10-04 12:43:24,564 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:24,564 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:24,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:24,565 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:24,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:24,810 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:25,005 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:25,473 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:25,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:25,771 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:25,771 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:25,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:25,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:25,951 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:25,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-04 12:43:25,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-04 12:43:25,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-04 12:43:25,952 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:25,952 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-10-04 12:43:26,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:26,062 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-04 12:43:26,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-04 12:43:26,062 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-10-04 12:43:26,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:26,062 INFO L225 Difference]: With dead ends: 62 [2018-10-04 12:43:26,062 INFO L226 Difference]: Without dead ends: 60 [2018-10-04 12:43:26,063 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 13 [2018-10-04 12:43:26,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-04 12:43:26,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-04 12:43:26,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-04 12:43:26,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-04 12:43:26,065 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-10-04 12:43:26,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:26,066 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-04 12:43:26,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-04 12:43:26,066 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-04 12:43:26,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-04 12:43:26,066 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:26,066 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-10-04 12:43:26,067 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:26,067 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:26,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1408494461, now seen corresponding path program 56 times [2018-10-04 12:43:26,067 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:26,067 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:26,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:26,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:26,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:26,447 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:26,759 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:27,217 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:27,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:27,478 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:27,479 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:27,486 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:43:27,530 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:43:27,530 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:27,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:27,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:27,667 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:27,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-04 12:43:27,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-04 12:43:27,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-04 12:43:27,668 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:27,668 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-10-04 12:43:27,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:27,767 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-04 12:43:27,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-04 12:43:27,768 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-10-04 12:43:27,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:27,768 INFO L225 Difference]: With dead ends: 63 [2018-10-04 12:43:27,768 INFO L226 Difference]: Without dead ends: 61 [2018-10-04 12:43:27,769 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime 14 [2018-10-04 12:43:27,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-04 12:43:27,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-04 12:43:27,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-04 12:43:27,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-04 12:43:27,771 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-10-04 12:43:27,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:27,771 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-04 12:43:27,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-04 12:43:27,771 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-04 12:43:27,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-04 12:43:27,771 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:27,771 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-10-04 12:43:27,772 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:27,772 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:27,772 INFO L82 PathProgramCache]: Analyzing trace with hash -713653524, now seen corresponding path program 57 times [2018-10-04 12:43:27,772 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:27,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:27,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:27,773 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:27,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:28,005 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:28,420 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:29,037 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:29,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:29,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:29,437 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:29,445 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:43:29,503 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-04 12:43:29,504 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:29,506 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:29,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:29,642 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:29,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-04 12:43:29,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-04 12:43:29,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-04 12:43:29,643 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:29,643 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-10-04 12:43:29,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:29,757 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-10-04 12:43:29,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-04 12:43:29,757 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-10-04 12:43:29,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:29,758 INFO L225 Difference]: With dead ends: 64 [2018-10-04 12:43:29,758 INFO L226 Difference]: Without dead ends: 62 [2018-10-04 12:43:29,758 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.4s impTime 15 [2018-10-04 12:43:29,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-04 12:43:29,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-04 12:43:29,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-04 12:43:29,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-04 12:43:29,761 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-10-04 12:43:29,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:29,761 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-04 12:43:29,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-04 12:43:29,761 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-04 12:43:29,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-04 12:43:29,762 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:29,762 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-10-04 12:43:29,762 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:29,762 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:29,762 INFO L82 PathProgramCache]: Analyzing trace with hash -648420957, now seen corresponding path program 58 times [2018-10-04 12:43:29,762 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:29,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:29,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:29,763 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:29,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:30,631 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:31,052 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:31,434 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:31,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:31,977 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:31,977 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:31,986 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:43:32,033 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:43:32,033 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:32,036 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:32,189 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:32,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-04 12:43:32,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-04 12:43:32,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-04 12:43:32,190 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:32,190 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-10-04 12:43:32,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:32,301 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-04 12:43:32,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-04 12:43:32,302 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-10-04 12:43:32,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:32,302 INFO L225 Difference]: With dead ends: 65 [2018-10-04 12:43:32,302 INFO L226 Difference]: Without dead ends: 63 [2018-10-04 12:43:32,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime 16 [2018-10-04 12:43:32,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-04 12:43:32,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-04 12:43:32,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-04 12:43:32,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-04 12:43:32,306 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-10-04 12:43:32,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:32,306 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-04 12:43:32,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-04 12:43:32,306 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-04 12:43:32,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-04 12:43:32,307 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:32,307 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-10-04 12:43:32,307 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:32,307 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:32,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1373788620, now seen corresponding path program 59 times [2018-10-04 12:43:32,308 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:32,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:32,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:32,309 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:32,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:33,054 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:33,475 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:34,062 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:34,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:34,558 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:34,558 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:34,565 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:43:34,624 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-04 12:43:34,624 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:34,627 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:34,822 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:34,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-04 12:43:34,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-04 12:43:34,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-04 12:43:34,822 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:34,823 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-10-04 12:43:34,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:34,953 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-10-04 12:43:34,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-04 12:43:34,954 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-10-04 12:43:34,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:34,955 INFO L225 Difference]: With dead ends: 66 [2018-10-04 12:43:34,955 INFO L226 Difference]: Without dead ends: 64 [2018-10-04 12:43:34,955 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.8s impTime 17 [2018-10-04 12:43:34,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-04 12:43:34,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-04 12:43:34,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-04 12:43:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-04 12:43:34,957 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-10-04 12:43:34,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:34,957 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-04 12:43:34,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-04 12:43:34,957 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-04 12:43:34,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-04 12:43:34,957 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:34,957 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-10-04 12:43:34,958 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:34,958 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:34,958 INFO L82 PathProgramCache]: Analyzing trace with hash -362223933, now seen corresponding path program 60 times [2018-10-04 12:43:34,958 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:34,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:34,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:34,959 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:34,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:35,370 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:35,541 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:35,894 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:36,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:36,246 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:36,246 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:36,254 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:43:36,316 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-04 12:43:36,316 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:36,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:36,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:36,553 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:36,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-04 12:43:36,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-04 12:43:36,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-04 12:43:36,554 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:36,554 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-10-04 12:43:36,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:36,718 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-04 12:43:36,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-04 12:43:36,719 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-10-04 12:43:36,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:36,719 INFO L225 Difference]: With dead ends: 67 [2018-10-04 12:43:36,719 INFO L226 Difference]: Without dead ends: 65 [2018-10-04 12:43:36,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 18 [2018-10-04 12:43:36,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-04 12:43:36,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-04 12:43:36,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-04 12:43:36,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-04 12:43:36,722 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-10-04 12:43:36,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:36,722 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-04 12:43:36,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-04 12:43:36,722 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-04 12:43:36,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-04 12:43:36,723 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:36,723 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-10-04 12:43:36,723 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:36,723 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:36,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1655961772, now seen corresponding path program 61 times [2018-10-04 12:43:36,723 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:36,724 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:36,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:36,724 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:36,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:36,993 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:37,263 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:37,504 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:37,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:37,810 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:37,810 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:37,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:37,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:38,010 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:38,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-04 12:43:38,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-04 12:43:38,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-04 12:43:38,011 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:38,011 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-10-04 12:43:38,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:38,105 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-04 12:43:38,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-04 12:43:38,106 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-10-04 12:43:38,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:38,107 INFO L225 Difference]: With dead ends: 68 [2018-10-04 12:43:38,107 INFO L226 Difference]: Without dead ends: 66 [2018-10-04 12:43:38,107 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 19 [2018-10-04 12:43:38,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-04 12:43:38,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-04 12:43:38,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-04 12:43:38,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-04 12:43:38,109 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-10-04 12:43:38,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:38,109 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-04 12:43:38,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-04 12:43:38,109 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-04 12:43:38,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-04 12:43:38,109 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:38,109 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-10-04 12:43:38,110 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:38,110 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:38,110 INFO L82 PathProgramCache]: Analyzing trace with hash -204790813, now seen corresponding path program 62 times [2018-10-04 12:43:38,110 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:38,110 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:38,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:38,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:38,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:38,500 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:38,749 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:39,016 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:39,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:39,387 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:39,387 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:39,395 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:43:39,444 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:43:39,444 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:39,446 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:39,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:39,596 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:39,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-04 12:43:39,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-04 12:43:39,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-04 12:43:39,597 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:39,597 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-10-04 12:43:39,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:39,775 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-04 12:43:39,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-04 12:43:39,776 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-10-04 12:43:39,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:39,776 INFO L225 Difference]: With dead ends: 69 [2018-10-04 12:43:39,776 INFO L226 Difference]: Without dead ends: 67 [2018-10-04 12:43:39,777 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime 20 [2018-10-04 12:43:39,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-04 12:43:39,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-04 12:43:39,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-04 12:43:39,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-04 12:43:39,778 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-10-04 12:43:39,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:39,779 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-04 12:43:39,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-04 12:43:39,779 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-04 12:43:39,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-04 12:43:39,779 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:39,780 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-10-04 12:43:39,780 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:39,780 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:39,780 INFO L82 PathProgramCache]: Analyzing trace with hash -2053546100, now seen corresponding path program 63 times [2018-10-04 12:43:39,780 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:39,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:39,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:39,781 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:39,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:40,776 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:40,972 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:41,354 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:42,082 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:42,082 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:42,091 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:43:42,156 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-04 12:43:42,156 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:42,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:42,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:42,295 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:42,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-04 12:43:42,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-04 12:43:42,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-04 12:43:42,297 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:42,297 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-10-04 12:43:42,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:42,543 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-04 12:43:42,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-04 12:43:42,543 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-10-04 12:43:42,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:42,544 INFO L225 Difference]: With dead ends: 70 [2018-10-04 12:43:42,544 INFO L226 Difference]: Without dead ends: 68 [2018-10-04 12:43:42,544 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.8s impTime 21 [2018-10-04 12:43:42,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-04 12:43:42,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-04 12:43:42,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-04 12:43:42,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-04 12:43:42,547 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-10-04 12:43:42,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:42,547 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-04 12:43:42,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-04 12:43:42,548 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-04 12:43:42,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-04 12:43:42,548 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:42,548 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-10-04 12:43:42,548 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:42,548 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:42,548 INFO L82 PathProgramCache]: Analyzing trace with hash 764582147, now seen corresponding path program 64 times [2018-10-04 12:43:42,548 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:42,549 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:42,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:42,549 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:42,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:42,786 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:43,202 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:43,782 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:44,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:44,540 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:44,540 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:44,558 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:43:44,625 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:43:44,625 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:44,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:44,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:44,768 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:44,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-04 12:43:44,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-04 12:43:44,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-04 12:43:44,769 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:44,769 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-10-04 12:43:44,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:44,895 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-04 12:43:44,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-04 12:43:44,895 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-10-04 12:43:44,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:44,895 INFO L225 Difference]: With dead ends: 71 [2018-10-04 12:43:44,896 INFO L226 Difference]: Without dead ends: 69 [2018-10-04 12:43:44,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.7s impTime 22 [2018-10-04 12:43:44,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-04 12:43:44,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-04 12:43:44,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-04 12:43:44,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-04 12:43:44,898 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-10-04 12:43:44,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:44,898 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-04 12:43:44,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-04 12:43:44,898 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-04 12:43:44,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-04 12:43:44,899 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:44,899 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-10-04 12:43:44,899 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:44,900 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:44,900 INFO L82 PathProgramCache]: Analyzing trace with hash -2067755412, now seen corresponding path program 65 times [2018-10-04 12:43:44,900 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:44,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:44,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:44,900 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:44,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:45,127 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:45,427 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:45,747 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:46,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:46,622 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:46,622 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:46,629 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:43:46,701 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-04 12:43:46,701 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:46,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:46,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:47,010 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:47,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-04 12:43:47,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-04 12:43:47,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-04 12:43:47,011 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:47,012 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-10-04 12:43:47,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:47,134 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-10-04 12:43:47,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-04 12:43:47,135 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-10-04 12:43:47,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:47,135 INFO L225 Difference]: With dead ends: 72 [2018-10-04 12:43:47,135 INFO L226 Difference]: Without dead ends: 70 [2018-10-04 12:43:47,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 23 [2018-10-04 12:43:47,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-04 12:43:47,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-04 12:43:47,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-04 12:43:47,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-04 12:43:47,137 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-10-04 12:43:47,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:47,138 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-04 12:43:47,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-04 12:43:47,138 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-04 12:43:47,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-04 12:43:47,138 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:47,138 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-10-04 12:43:47,138 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:47,138 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:47,139 INFO L82 PathProgramCache]: Analyzing trace with hash 324093475, now seen corresponding path program 66 times [2018-10-04 12:43:47,139 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:47,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:47,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:47,139 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:47,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:47,342 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:47,729 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:48,331 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:48,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:48,556 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:48,556 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:48,563 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:43:48,634 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-04 12:43:48,634 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:48,637 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:48,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:48,964 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:48,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-04 12:43:48,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-04 12:43:48,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-04 12:43:48,965 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:48,965 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-10-04 12:43:49,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:49,051 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-04 12:43:49,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-04 12:43:49,052 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-10-04 12:43:49,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:49,052 INFO L225 Difference]: With dead ends: 73 [2018-10-04 12:43:49,052 INFO L226 Difference]: Without dead ends: 71 [2018-10-04 12:43:49,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime 24 [2018-10-04 12:43:49,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-04 12:43:49,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-04 12:43:49,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-04 12:43:49,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-04 12:43:49,054 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-10-04 12:43:49,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:49,055 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-04 12:43:49,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-04 12:43:49,055 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-04 12:43:49,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-04 12:43:49,055 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:49,055 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-10-04 12:43:49,056 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:49,056 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:49,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1456964940, now seen corresponding path program 67 times [2018-10-04 12:43:49,056 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:49,056 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:49,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:49,057 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:49,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:49,311 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:49,705 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:50,288 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:51,234 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:43:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:51,242 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:51,242 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:51,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:51,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:51,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:51,439 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:51,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-04 12:43:51,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-04 12:43:51,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-04 12:43:51,440 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:51,440 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-10-04 12:43:51,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:51,605 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-04 12:43:51,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-04 12:43:51,606 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-10-04 12:43:51,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:51,606 INFO L225 Difference]: With dead ends: 74 [2018-10-04 12:43:51,606 INFO L226 Difference]: Without dead ends: 72 [2018-10-04 12:43:51,607 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.8s impTime 8 [2018-10-04 12:43:51,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-04 12:43:51,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-04 12:43:51,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-04 12:43:51,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-04 12:43:51,608 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-10-04 12:43:51,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:51,609 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-04 12:43:51,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-04 12:43:51,609 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-04 12:43:51,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-04 12:43:51,609 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:51,609 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-10-04 12:43:51,609 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:51,609 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:51,610 INFO L82 PathProgramCache]: Analyzing trace with hash -2078725309, now seen corresponding path program 68 times [2018-10-04 12:43:51,610 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:51,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:51,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:51,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:51,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:52,102 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:52,484 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:53,064 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:54,020 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:43:54,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:54,030 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:54,030 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:54,036 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:43:54,091 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:43:54,091 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:54,093 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:54,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:54,234 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:54,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-04 12:43:54,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-04 12:43:54,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-04 12:43:54,235 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:54,235 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-10-04 12:43:54,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:54,400 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-04 12:43:54,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-04 12:43:54,401 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-10-04 12:43:54,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:54,401 INFO L225 Difference]: With dead ends: 75 [2018-10-04 12:43:54,401 INFO L226 Difference]: Without dead ends: 73 [2018-10-04 12:43:54,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.0s impTime 9 [2018-10-04 12:43:54,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-04 12:43:54,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-04 12:43:54,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-04 12:43:54,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-04 12:43:54,404 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-10-04 12:43:54,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:54,404 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-04 12:43:54,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-04 12:43:54,404 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-04 12:43:54,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-04 12:43:54,405 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:54,405 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-10-04 12:43:54,406 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:54,406 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:54,406 INFO L82 PathProgramCache]: Analyzing trace with hash -15973332, now seen corresponding path program 69 times [2018-10-04 12:43:54,406 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:54,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:54,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:54,407 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:54,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:54,635 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:55,040 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:55,621 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:56,592 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:43:56,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:56,718 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:56,718 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:56,725 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:43:56,826 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-04 12:43:56,827 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:56,830 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:58,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:58,367 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:58,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-04 12:43:58,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-04 12:43:58,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-04 12:43:58,368 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:58,368 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-10-04 12:43:58,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:58,537 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-04 12:43:58,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-04 12:43:58,538 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-10-04 12:43:58,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:58,538 INFO L225 Difference]: With dead ends: 76 [2018-10-04 12:43:58,539 INFO L226 Difference]: Without dead ends: 74 [2018-10-04 12:43:58,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time 2.0s impTime 10 [2018-10-04 12:43:58,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-04 12:43:58,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-04 12:43:58,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-04 12:43:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-04 12:43:58,541 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-10-04 12:43:58,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:58,542 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-04 12:43:58,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-04 12:43:58,542 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-04 12:43:58,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-04 12:43:58,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:58,542 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-10-04 12:43:58,543 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:58,543 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:58,543 INFO L82 PathProgramCache]: Analyzing trace with hash -495171485, now seen corresponding path program 70 times [2018-10-04 12:43:58,543 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:58,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:58,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:58,544 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:58,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:58,731 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:59,101 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:59,472 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:59,774 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:43:59,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:43:59,854 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:59,854 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:43:59,878 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:43:59,951 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:43:59,951 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:59,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:00,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:00,106 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:00,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-04 12:44:00,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-04 12:44:00,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-04 12:44:00,108 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:00,108 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-10-04 12:44:00,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:00,330 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-04 12:44:00,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-04 12:44:00,331 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-10-04 12:44:00,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:00,332 INFO L225 Difference]: With dead ends: 77 [2018-10-04 12:44:00,332 INFO L226 Difference]: Without dead ends: 75 [2018-10-04 12:44:00,332 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime 11 [2018-10-04 12:44:00,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-04 12:44:00,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-04 12:44:00,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-04 12:44:00,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-04 12:44:00,334 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-10-04 12:44:00,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:00,335 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-04 12:44:00,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-04 12:44:00,335 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-04 12:44:00,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-04 12:44:00,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:00,335 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-10-04 12:44:00,336 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:00,336 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:00,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1829554956, now seen corresponding path program 71 times [2018-10-04 12:44:00,336 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:00,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:00,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:00,337 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:00,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:00,551 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:00,744 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:01,171 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:02,406 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:02,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:02,653 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:02,653 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:44:02,661 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:44:02,774 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-04 12:44:02,774 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:02,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:03,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:03,167 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:03,168 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-04 12:44:03,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-04 12:44:03,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-04 12:44:03,169 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:03,169 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-10-04 12:44:03,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:03,322 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-10-04 12:44:03,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-04 12:44:03,322 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-10-04 12:44:03,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:03,323 INFO L225 Difference]: With dead ends: 78 [2018-10-04 12:44:03,323 INFO L226 Difference]: Without dead ends: 76 [2018-10-04 12:44:03,323 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.0s impTime 12 [2018-10-04 12:44:03,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-04 12:44:03,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-04 12:44:03,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-04 12:44:03,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-04 12:44:03,326 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-10-04 12:44:03,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:03,326 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-04 12:44:03,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-04 12:44:03,327 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-04 12:44:03,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-04 12:44:03,327 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:03,327 INFO L375 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-10-04 12:44:03,328 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:03,328 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:03,328 INFO L82 PathProgramCache]: Analyzing trace with hash 881630595, now seen corresponding path program 72 times [2018-10-04 12:44:03,328 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:03,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:03,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:03,329 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:03,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:03,594 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:03,962 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:04,441 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:05,403 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:05,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:05,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:05,717 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:44:05,724 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:44:05,798 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-04 12:44:05,799 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:05,802 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:06,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:06,053 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:06,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-04 12:44:06,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-04 12:44:06,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-04 12:44:06,054 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:06,054 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-10-04 12:44:06,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:06,231 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-04 12:44:06,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-04 12:44:06,231 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-10-04 12:44:06,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:06,232 INFO L225 Difference]: With dead ends: 79 [2018-10-04 12:44:06,232 INFO L226 Difference]: Without dead ends: 77 [2018-10-04 12:44:06,232 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.0s impTime 13 [2018-10-04 12:44:06,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-04 12:44:06,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-04 12:44:06,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-04 12:44:06,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-04 12:44:06,235 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-10-04 12:44:06,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:06,249 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-04 12:44:06,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-04 12:44:06,249 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-04 12:44:06,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-04 12:44:06,249 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:06,250 INFO L375 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-10-04 12:44:06,250 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:06,252 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:06,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1560746476, now seen corresponding path program 73 times [2018-10-04 12:44:06,252 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:06,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:06,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:06,253 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:06,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:06,481 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:06,882 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:07,729 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:08,677 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:09,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:09,059 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:09,059 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:44:09,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:44:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:09,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:09,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:09,280 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:09,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-04 12:44:09,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-04 12:44:09,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-04 12:44:09,281 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:09,281 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-10-04 12:44:09,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:09,453 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-10-04 12:44:09,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-04 12:44:09,453 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-10-04 12:44:09,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:09,454 INFO L225 Difference]: With dead ends: 80 [2018-10-04 12:44:09,454 INFO L226 Difference]: Without dead ends: 78 [2018-10-04 12:44:09,454 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.5s impTime 14 [2018-10-04 12:44:09,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-04 12:44:09,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-04 12:44:09,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-04 12:44:09,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-04 12:44:09,456 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-10-04 12:44:09,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:09,456 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-04 12:44:09,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-04 12:44:09,456 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-04 12:44:09,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-04 12:44:09,457 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:09,457 INFO L375 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-10-04 12:44:09,457 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:09,457 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:09,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1138502307, now seen corresponding path program 74 times [2018-10-04 12:44:09,457 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:09,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:09,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:09,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:44:09,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:09,654 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:10,020 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:10,554 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:11,485 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:11,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:11,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:11,901 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:44:11,911 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:44:11,964 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:44:11,965 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:11,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:12,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:12,137 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:12,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-04 12:44:12,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-04 12:44:12,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-04 12:44:12,138 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:12,138 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. [2018-10-04 12:44:12,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:12,341 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-04 12:44:12,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-04 12:44:12,341 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 77 [2018-10-04 12:44:12,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:12,342 INFO L225 Difference]: With dead ends: 81 [2018-10-04 12:44:12,342 INFO L226 Difference]: Without dead ends: 79 [2018-10-04 12:44:12,342 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.1s impTime 15 [2018-10-04 12:44:12,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-04 12:44:12,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-04 12:44:12,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-04 12:44:12,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-04 12:44:12,344 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-10-04 12:44:12,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:12,344 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-04 12:44:12,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-04 12:44:12,344 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-04 12:44:12,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-04 12:44:12,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:12,345 INFO L375 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-10-04 12:44:12,345 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:12,345 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:12,345 INFO L82 PathProgramCache]: Analyzing trace with hash 933834956, now seen corresponding path program 75 times [2018-10-04 12:44:12,345 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:12,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:12,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:12,346 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:12,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:12,696 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:13,093 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:13,673 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:14,712 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:15,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:15,205 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:15,205 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:44:15,212 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:44:15,292 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-10-04 12:44:15,292 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:15,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:15,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:15,885 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:15,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-04 12:44:15,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-04 12:44:15,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-04 12:44:15,888 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:15,888 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 78 states. [2018-10-04 12:44:17,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:17,389 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-10-04 12:44:17,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-04 12:44:17,389 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2018-10-04 12:44:17,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:17,389 INFO L225 Difference]: With dead ends: 82 [2018-10-04 12:44:17,389 INFO L226 Difference]: Without dead ends: 80 [2018-10-04 12:44:17,390 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 2.4s impTime 16 [2018-10-04 12:44:17,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-04 12:44:17,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-10-04 12:44:17,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-04 12:44:17,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-04 12:44:17,392 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-10-04 12:44:17,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:17,392 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-04 12:44:17,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-04 12:44:17,393 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-04 12:44:17,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-04 12:44:17,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:17,393 INFO L375 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-10-04 12:44:17,394 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:17,394 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:17,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1115885629, now seen corresponding path program 76 times [2018-10-04 12:44:17,394 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:17,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:17,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:17,395 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:17,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:17,718 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:18,081 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:18,670 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:19,636 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:20,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:20,219 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:20,219 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:44:20,226 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:44:20,299 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:44:20,299 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:20,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:20,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:20,461 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:20,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-04 12:44:20,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-04 12:44:20,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-04 12:44:20,462 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:20,462 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 79 states. [2018-10-04 12:44:20,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:20,632 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-04 12:44:20,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-04 12:44:20,633 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 79 [2018-10-04 12:44:20,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:20,633 INFO L225 Difference]: With dead ends: 83 [2018-10-04 12:44:20,633 INFO L226 Difference]: Without dead ends: 81 [2018-10-04 12:44:20,633 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.5s impTime 17 [2018-10-04 12:44:20,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-04 12:44:20,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-04 12:44:20,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-04 12:44:20,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-04 12:44:20,636 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-10-04 12:44:20,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:20,637 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-04 12:44:20,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-04 12:44:20,637 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-04 12:44:20,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-04 12:44:20,638 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:20,638 INFO L375 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-10-04 12:44:20,638 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:20,638 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:20,638 INFO L82 PathProgramCache]: Analyzing trace with hash -232714324, now seen corresponding path program 77 times [2018-10-04 12:44:20,638 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:20,638 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:20,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:20,639 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:20,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:21,216 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:21,480 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:21,782 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:23,003 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:23,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:23,644 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:23,644 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:44:23,651 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:44:23,734 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-10-04 12:44:23,734 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:23,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:23,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:23,894 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:23,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-04 12:44:23,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-04 12:44:23,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-04 12:44:23,895 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:23,895 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 80 states. [2018-10-04 12:44:24,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:24,068 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-10-04 12:44:24,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-04 12:44:24,069 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 80 [2018-10-04 12:44:24,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:24,069 INFO L225 Difference]: With dead ends: 84 [2018-10-04 12:44:24,069 INFO L226 Difference]: Without dead ends: 82 [2018-10-04 12:44:24,070 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.6s impTime 18 [2018-10-04 12:44:24,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-04 12:44:24,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-10-04 12:44:24,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-04 12:44:24,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-10-04 12:44:24,072 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-10-04 12:44:24,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:24,072 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-10-04 12:44:24,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-04 12:44:24,072 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-10-04 12:44:24,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-04 12:44:24,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:24,073 INFO L375 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-10-04 12:44:24,073 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:24,073 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:24,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1375792355, now seen corresponding path program 78 times [2018-10-04 12:44:24,073 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:24,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:24,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:24,074 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:24,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:24,448 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:24,851 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:25,438 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:26,020 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:26,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:26,179 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:26,179 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:44:26,185 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:44:26,503 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2018-10-04 12:44:26,503 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:26,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:26,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:26,796 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:26,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-04 12:44:26,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-04 12:44:26,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-04 12:44:26,797 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:26,798 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 81 states. [2018-10-04 12:44:26,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:26,908 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-04 12:44:26,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-04 12:44:26,909 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 81 [2018-10-04 12:44:26,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:26,909 INFO L225 Difference]: With dead ends: 85 [2018-10-04 12:44:26,910 INFO L226 Difference]: Without dead ends: 83 [2018-10-04 12:44:26,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.7s impTime 19 [2018-10-04 12:44:26,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-04 12:44:26,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-04 12:44:26,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-04 12:44:26,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-04 12:44:26,912 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-10-04 12:44:26,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:26,913 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-04 12:44:26,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-04 12:44:26,913 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-04 12:44:26,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-04 12:44:26,913 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:26,913 INFO L375 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-10-04 12:44:26,914 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:26,914 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:26,914 INFO L82 PathProgramCache]: Analyzing trace with hash -300108148, now seen corresponding path program 79 times [2018-10-04 12:44:26,914 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:26,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:26,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:26,915 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:26,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:27,473 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:27,885 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:28,356 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:29,063 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:29,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:29,669 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:29,669 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:44:29,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:44:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:29,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:29,894 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:29,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-04 12:44:29,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-04 12:44:29,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-04 12:44:29,896 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:29,896 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 82 states. [2018-10-04 12:44:30,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:30,057 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-10-04 12:44:30,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-04 12:44:30,057 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82 [2018-10-04 12:44:30,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:30,058 INFO L225 Difference]: With dead ends: 86 [2018-10-04 12:44:30,058 INFO L226 Difference]: Without dead ends: 84 [2018-10-04 12:44:30,058 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.2s impTime 20 [2018-10-04 12:44:30,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-04 12:44:30,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-10-04 12:44:30,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-04 12:44:30,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-10-04 12:44:30,060 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-10-04 12:44:30,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:30,061 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-10-04 12:44:30,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-04 12:44:30,061 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-10-04 12:44:30,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-04 12:44:30,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:30,061 INFO L375 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-10-04 12:44:30,062 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:30,062 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:30,062 INFO L82 PathProgramCache]: Analyzing trace with hash -713416189, now seen corresponding path program 80 times [2018-10-04 12:44:30,062 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:30,062 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:30,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:30,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:44:30,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:30,306 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:30,552 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:30,864 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:31,844 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:32,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:32,671 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:32,671 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:44:32,680 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:44:32,744 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:44:32,745 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:32,747 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:33,052 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:33,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-04 12:44:33,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-04 12:44:33,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-04 12:44:33,053 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:33,053 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 83 states. [2018-10-04 12:44:33,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:33,269 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-04 12:44:33,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-04 12:44:33,269 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 83 [2018-10-04 12:44:33,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:33,270 INFO L225 Difference]: With dead ends: 87 [2018-10-04 12:44:33,270 INFO L226 Difference]: Without dead ends: 85 [2018-10-04 12:44:33,270 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.3s impTime 21 [2018-10-04 12:44:33,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-04 12:44:33,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-04 12:44:33,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-04 12:44:33,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-04 12:44:33,273 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-10-04 12:44:33,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:33,273 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-04 12:44:33,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-04 12:44:33,273 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-04 12:44:33,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-04 12:44:33,274 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:33,274 INFO L375 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-10-04 12:44:33,274 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:33,274 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:33,274 INFO L82 PathProgramCache]: Analyzing trace with hash -641063572, now seen corresponding path program 81 times [2018-10-04 12:44:33,274 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:33,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:33,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:33,275 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:33,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:33,653 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:33,918 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:34,149 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:34,742 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:35,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:35,326 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:35,326 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:44:35,333 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:44:35,424 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-10-04 12:44:35,424 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:35,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:35,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:35,594 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:35,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-04 12:44:35,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-04 12:44:35,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-04 12:44:35,596 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:35,596 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 84 states. [2018-10-04 12:44:35,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:35,749 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-10-04 12:44:35,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-04 12:44:35,750 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 84 [2018-10-04 12:44:35,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:35,750 INFO L225 Difference]: With dead ends: 88 [2018-10-04 12:44:35,750 INFO L226 Difference]: Without dead ends: 86 [2018-10-04 12:44:35,751 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.6s impTime 22 [2018-10-04 12:44:35,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-04 12:44:35,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-04 12:44:35,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-04 12:44:35,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-10-04 12:44:35,753 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-10-04 12:44:35,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:35,753 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-10-04 12:44:35,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-04 12:44:35,753 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-10-04 12:44:35,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-04 12:44:35,754 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:35,754 INFO L375 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-10-04 12:44:35,754 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:35,754 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:35,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1601867555, now seen corresponding path program 82 times [2018-10-04 12:44:35,754 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:35,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:35,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:35,755 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:35,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:36,066 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:36,230 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:36,632 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:37,597 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:38,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:38,866 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:38,866 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:44:38,877 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:44:38,941 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:44:38,942 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:38,945 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:39,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:39,303 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:39,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-04 12:44:39,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-04 12:44:39,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-04 12:44:39,304 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:39,304 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 85 states. [2018-10-04 12:44:39,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:39,792 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-04 12:44:39,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-04 12:44:39,793 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 85 [2018-10-04 12:44:39,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:39,793 INFO L225 Difference]: With dead ends: 89 [2018-10-04 12:44:39,793 INFO L226 Difference]: Without dead ends: 87 [2018-10-04 12:44:39,793 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 2.7s impTime 23 [2018-10-04 12:44:39,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-04 12:44:39,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-04 12:44:39,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-04 12:44:39,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-04 12:44:39,795 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-10-04 12:44:39,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:39,796 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-04 12:44:39,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-04 12:44:39,796 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-04 12:44:39,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-04 12:44:39,796 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:39,796 INFO L375 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-10-04 12:44:39,797 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:39,797 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:39,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1881711540, now seen corresponding path program 83 times [2018-10-04 12:44:39,797 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:39,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:39,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:39,798 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:39,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:40,055 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:40,450 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:41,021 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:41,972 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:43,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:43,194 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:44:43,200 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:44:43,298 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-04 12:44:43,298 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:43,301 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:43,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:43,468 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:43,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-04 12:44:43,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-04 12:44:43,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-04 12:44:43,469 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:43,470 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 86 states. [2018-10-04 12:44:43,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:43,682 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-10-04 12:44:43,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-04 12:44:43,683 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86 [2018-10-04 12:44:43,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:43,683 INFO L225 Difference]: With dead ends: 90 [2018-10-04 12:44:43,683 INFO L226 Difference]: Without dead ends: 88 [2018-10-04 12:44:43,684 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 3.0s impTime 24 [2018-10-04 12:44:43,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-04 12:44:43,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-10-04 12:44:43,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-04 12:44:43,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-10-04 12:44:43,686 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-10-04 12:44:43,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:43,686 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-10-04 12:44:43,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-04 12:44:43,686 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-10-04 12:44:43,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-04 12:44:43,687 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:43,687 INFO L375 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-10-04 12:44:43,687 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:43,687 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:43,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1796486211, now seen corresponding path program 84 times [2018-10-04 12:44:43,688 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:43,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:43,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:43,689 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:43,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:43,882 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:44,282 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:44,458 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:44,895 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:45,553 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:45,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:45,565 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:45,565 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:44:45,573 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:44:45,664 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-04 12:44:45,664 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:45,668 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:45,840 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:45,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-04 12:44:45,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-04 12:44:45,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-04 12:44:45,842 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:45,842 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 87 states. [2018-10-04 12:44:45,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:45,990 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-04 12:44:45,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-04 12:44:45,990 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 87 [2018-10-04 12:44:45,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:45,991 INFO L225 Difference]: With dead ends: 91 [2018-10-04 12:44:45,991 INFO L226 Difference]: Without dead ends: 89 [2018-10-04 12:44:45,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime 8 [2018-10-04 12:44:45,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-04 12:44:45,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-04 12:44:45,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-04 12:44:45,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-04 12:44:45,994 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-10-04 12:44:45,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:45,994 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-04 12:44:45,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-04 12:44:45,994 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-04 12:44:45,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-04 12:44:45,995 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:45,995 INFO L375 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-10-04 12:44:45,995 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:45,995 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:45,996 INFO L82 PathProgramCache]: Analyzing trace with hash -143500500, now seen corresponding path program 85 times [2018-10-04 12:44:45,996 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:45,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:45,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:45,996 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:45,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:46,231 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:46,639 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:47,225 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:47,837 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:48,341 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:48,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:48,415 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:48,416 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:44:48,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:44:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:48,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:48,658 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:48,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-04 12:44:48,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-04 12:44:48,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-04 12:44:48,660 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:48,660 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 88 states. [2018-10-04 12:44:48,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:48,806 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-10-04 12:44:48,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-04 12:44:48,807 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 88 [2018-10-04 12:44:48,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:48,808 INFO L225 Difference]: With dead ends: 92 [2018-10-04 12:44:48,808 INFO L226 Difference]: Without dead ends: 90 [2018-10-04 12:44:48,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.9s impTime 9 [2018-10-04 12:44:48,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-04 12:44:48,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-10-04 12:44:48,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-04 12:44:48,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-10-04 12:44:48,811 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-10-04 12:44:48,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:48,811 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-10-04 12:44:48,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-04 12:44:48,811 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-10-04 12:44:48,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-04 12:44:48,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:48,812 INFO L375 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-10-04 12:44:48,812 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:48,812 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:48,812 INFO L82 PathProgramCache]: Analyzing trace with hash -153546397, now seen corresponding path program 86 times [2018-10-04 12:44:48,813 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:48,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:48,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:48,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:44:48,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:48,977 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:49,233 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:49,712 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:50,822 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:51,444 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:51,478 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:51,478 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:44:51,485 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:44:51,551 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:44:51,551 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:51,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:51,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:51,720 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:51,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-04 12:44:51,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-04 12:44:51,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-04 12:44:51,722 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:51,722 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 89 states. [2018-10-04 12:44:51,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:51,881 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-04 12:44:51,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-04 12:44:51,881 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 89 [2018-10-04 12:44:51,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:51,882 INFO L225 Difference]: With dead ends: 93 [2018-10-04 12:44:51,882 INFO L226 Difference]: Without dead ends: 91 [2018-10-04 12:44:51,882 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.1s impTime 10 [2018-10-04 12:44:51,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-04 12:44:51,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-04 12:44:51,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-04 12:44:51,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-04 12:44:51,884 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-10-04 12:44:51,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:51,884 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-04 12:44:51,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-04 12:44:51,885 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-04 12:44:51,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-04 12:44:51,885 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:51,885 INFO L375 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-10-04 12:44:51,885 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:51,886 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:51,886 INFO L82 PathProgramCache]: Analyzing trace with hash -464969204, now seen corresponding path program 87 times [2018-10-04 12:44:51,886 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:51,886 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:51,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:51,886 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:51,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:52,205 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:52,392 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:52,810 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:54,059 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:54,965 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:54,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:54,999 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:54,999 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:44:55,007 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:44:55,102 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2018-10-04 12:44:55,102 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:55,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:55,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:55,276 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:55,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-04 12:44:55,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-04 12:44:55,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-04 12:44:55,277 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:55,277 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 90 states. [2018-10-04 12:44:55,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:55,456 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-10-04 12:44:55,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-04 12:44:55,457 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90 [2018-10-04 12:44:55,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:55,457 INFO L225 Difference]: With dead ends: 94 [2018-10-04 12:44:55,457 INFO L226 Difference]: Without dead ends: 92 [2018-10-04 12:44:55,457 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.7s impTime 11 [2018-10-04 12:44:55,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-04 12:44:55,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-04 12:44:55,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-04 12:44:55,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-10-04 12:44:55,460 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-10-04 12:44:55,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:55,460 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-10-04 12:44:55,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-04 12:44:55,460 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-10-04 12:44:55,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-04 12:44:55,461 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:55,461 INFO L375 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-10-04 12:44:55,461 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:55,461 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:55,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1529141629, now seen corresponding path program 88 times [2018-10-04 12:44:55,461 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:55,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:55,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:55,462 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:55,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:55,626 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:55,877 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:56,348 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:57,314 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:57,928 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:57,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:57,985 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:57,985 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:44:57,991 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:44:58,058 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:44:58,059 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:58,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:58,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:44:58,234 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:58,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-04 12:44:58,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-04 12:44:58,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-04 12:44:58,235 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:58,235 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 91 states. [2018-10-04 12:44:58,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:58,411 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-04 12:44:58,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-04 12:44:58,411 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 91 [2018-10-04 12:44:58,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:58,411 INFO L225 Difference]: With dead ends: 95 [2018-10-04 12:44:58,411 INFO L226 Difference]: Without dead ends: 93 [2018-10-04 12:44:58,412 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.1s impTime 12 [2018-10-04 12:44:58,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-04 12:44:58,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-04 12:44:58,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-04 12:44:58,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-04 12:44:58,414 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-10-04 12:44:58,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:58,414 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-04 12:44:58,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-04 12:44:58,414 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-04 12:44:58,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-04 12:44:58,415 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:58,415 INFO L375 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-10-04 12:44:58,415 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:58,415 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:58,415 INFO L82 PathProgramCache]: Analyzing trace with hash -158748436, now seen corresponding path program 89 times [2018-10-04 12:44:58,415 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:58,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:58,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:58,416 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:58,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:58,815 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:59,219 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:59,806 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:00,409 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:00,715 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:00,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:00,850 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:00,851 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:45:00,857 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:45:00,958 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-10-04 12:45:00,958 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:00,962 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:01,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:01,146 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:01,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-04 12:45:01,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-04 12:45:01,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-04 12:45:01,147 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:01,148 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 92 states. [2018-10-04 12:45:01,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:01,314 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-10-04 12:45:01,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-04 12:45:01,314 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 92 [2018-10-04 12:45:01,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:01,315 INFO L225 Difference]: With dead ends: 96 [2018-10-04 12:45:01,315 INFO L226 Difference]: Without dead ends: 94 [2018-10-04 12:45:01,315 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.0s impTime 13 [2018-10-04 12:45:01,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-04 12:45:01,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-10-04 12:45:01,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-04 12:45:01,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-04 12:45:01,318 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-10-04 12:45:01,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:01,319 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-04 12:45:01,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-04 12:45:01,319 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-04 12:45:01,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-04 12:45:01,319 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:01,319 INFO L375 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-10-04 12:45:01,320 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:01,320 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:01,320 INFO L82 PathProgramCache]: Analyzing trace with hash -626232413, now seen corresponding path program 90 times [2018-10-04 12:45:01,320 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:01,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:01,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:01,321 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:01,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:01,592 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:01,985 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:02,157 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:02,582 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:03,261 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:03,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:03,802 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:03,802 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:45:03,812 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:45:03,909 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2018-10-04 12:45:03,909 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:03,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:04,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:04,139 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:04,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-04 12:45:04,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-04 12:45:04,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-04 12:45:04,140 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:04,140 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 93 states. [2018-10-04 12:45:04,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:04,347 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-04 12:45:04,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-04 12:45:04,347 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 93 [2018-10-04 12:45:04,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:04,348 INFO L225 Difference]: With dead ends: 97 [2018-10-04 12:45:04,348 INFO L226 Difference]: Without dead ends: 95 [2018-10-04 12:45:04,348 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.0s impTime 14 [2018-10-04 12:45:04,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-04 12:45:04,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-04 12:45:04,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-04 12:45:04,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-04 12:45:04,350 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-10-04 12:45:04,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:04,350 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-04 12:45:04,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-04 12:45:04,350 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-04 12:45:04,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-04 12:45:04,351 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:04,351 INFO L375 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-10-04 12:45:04,351 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:04,351 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:04,351 INFO L82 PathProgramCache]: Analyzing trace with hash 2061633484, now seen corresponding path program 91 times [2018-10-04 12:45:04,351 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:04,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:04,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:04,352 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:04,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:04,567 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:04,971 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:05,540 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:06,492 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:07,658 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:08,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:08,191 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:45:08,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:45:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:08,274 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:08,458 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:08,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-04 12:45:08,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-04 12:45:08,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-04 12:45:08,459 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:08,459 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2018-10-04 12:45:08,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:08,751 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-10-04 12:45:08,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-04 12:45:08,752 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94 [2018-10-04 12:45:08,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:08,752 INFO L225 Difference]: With dead ends: 98 [2018-10-04 12:45:08,752 INFO L226 Difference]: Without dead ends: 96 [2018-10-04 12:45:08,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s Time 3.4s impTime 15 [2018-10-04 12:45:08,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-04 12:45:08,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-04 12:45:08,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-04 12:45:08,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-04 12:45:08,754 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-10-04 12:45:08,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:08,755 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-04 12:45:08,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-04 12:45:08,755 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-04 12:45:08,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-04 12:45:08,755 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:08,755 INFO L375 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-10-04 12:45:08,755 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:08,756 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:08,756 INFO L82 PathProgramCache]: Analyzing trace with hash -513869629, now seen corresponding path program 92 times [2018-10-04 12:45:08,756 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:08,756 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:08,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:08,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:45:08,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:09,214 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:09,378 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:09,777 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:10,759 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:11,839 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:11,902 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:11,902 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:45:11,910 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:45:11,980 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:45:11,980 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:11,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:12,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:12,214 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:12,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-04 12:45:12,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-04 12:45:12,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-04 12:45:12,215 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:12,216 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 95 states. [2018-10-04 12:45:12,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:12,398 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-04 12:45:12,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-04 12:45:12,398 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 95 [2018-10-04 12:45:12,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:12,399 INFO L225 Difference]: With dead ends: 99 [2018-10-04 12:45:12,399 INFO L226 Difference]: Without dead ends: 97 [2018-10-04 12:45:12,399 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.6s impTime 16 [2018-10-04 12:45:12,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-04 12:45:12,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-04 12:45:12,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-04 12:45:12,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-04 12:45:12,401 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-10-04 12:45:12,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:12,401 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-04 12:45:12,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-04 12:45:12,402 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-04 12:45:12,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-04 12:45:12,402 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:12,402 INFO L375 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-10-04 12:45:12,403 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:12,403 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:12,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1249912492, now seen corresponding path program 93 times [2018-10-04 12:45:12,403 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:12,403 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:12,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:12,404 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:12,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:12,766 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:13,032 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:13,262 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:14,033 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:14,828 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:15,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:15,327 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:15,327 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:45:15,333 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:45:15,434 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2018-10-04 12:45:15,434 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:15,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:15,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:15,618 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:15,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-04 12:45:15,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-04 12:45:15,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-04 12:45:15,620 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:15,620 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 96 states. [2018-10-04 12:45:15,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:15,819 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-10-04 12:45:15,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-04 12:45:15,819 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 96 [2018-10-04 12:45:15,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:15,820 INFO L225 Difference]: With dead ends: 100 [2018-10-04 12:45:15,820 INFO L226 Difference]: Without dead ends: 98 [2018-10-04 12:45:15,820 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.4s impTime 17 [2018-10-04 12:45:15,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-04 12:45:15,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-10-04 12:45:15,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-10-04 12:45:15,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-10-04 12:45:15,822 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-10-04 12:45:15,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:15,822 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-10-04 12:45:15,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-04 12:45:15,823 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-10-04 12:45:15,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-04 12:45:15,823 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:15,823 INFO L375 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-10-04 12:45:15,823 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:15,824 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:15,824 INFO L82 PathProgramCache]: Analyzing trace with hash 92583395, now seen corresponding path program 94 times [2018-10-04 12:45:15,824 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:15,824 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:15,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:15,825 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:15,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:16,055 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:16,305 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:16,616 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:17,564 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:18,739 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:19,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:19,656 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:19,656 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:45:19,662 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:45:19,733 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:45:19,733 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:19,736 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:19,920 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:19,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-04 12:45:19,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-04 12:45:19,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-04 12:45:19,921 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:19,921 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 97 states. [2018-10-04 12:45:20,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:20,127 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-04 12:45:20,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-04 12:45:20,127 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 97 [2018-10-04 12:45:20,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:20,128 INFO L225 Difference]: With dead ends: 101 [2018-10-04 12:45:20,128 INFO L226 Difference]: Without dead ends: 99 [2018-10-04 12:45:20,128 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s Time 3.4s impTime 18 [2018-10-04 12:45:20,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-04 12:45:20,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-04 12:45:20,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-04 12:45:20,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-04 12:45:20,131 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-10-04 12:45:20,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:20,131 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-04 12:45:20,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-04 12:45:20,131 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-04 12:45:20,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-04 12:45:20,132 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:20,132 INFO L375 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-10-04 12:45:20,132 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:20,132 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:20,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1424880244, now seen corresponding path program 95 times [2018-10-04 12:45:20,132 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:20,132 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:20,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:20,133 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:20,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:20,325 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:20,513 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:20,894 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:21,601 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:22,542 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:23,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:23,246 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:23,246 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:45:23,266 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:45:23,378 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-04 12:45:23,378 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:23,381 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:23,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:23,566 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:23,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-04 12:45:23,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-04 12:45:23,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-04 12:45:23,567 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:23,567 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 98 states. [2018-10-04 12:45:23,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:23,823 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-10-04 12:45:23,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-04 12:45:23,823 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98 [2018-10-04 12:45:23,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:23,824 INFO L225 Difference]: With dead ends: 102 [2018-10-04 12:45:23,824 INFO L226 Difference]: Without dead ends: 100 [2018-10-04 12:45:23,824 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.7s impTime 19 [2018-10-04 12:45:23,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-04 12:45:23,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-04 12:45:23,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-04 12:45:23,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-10-04 12:45:23,826 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-10-04 12:45:23,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:23,826 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-10-04 12:45:23,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-04 12:45:23,827 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-10-04 12:45:23,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-04 12:45:23,827 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:23,827 INFO L375 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-10-04 12:45:23,828 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:23,828 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:23,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1221612797, now seen corresponding path program 96 times [2018-10-04 12:45:23,828 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:23,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:23,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:23,829 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:23,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:24,256 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:24,666 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:25,251 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:25,811 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:26,131 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:26,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:26,483 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:45:26,492 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:45:26,598 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-04 12:45:26,598 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:26,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:26,791 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:26,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-04 12:45:26,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-04 12:45:26,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-04 12:45:26,793 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:26,793 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 99 states. [2018-10-04 12:45:26,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:26,992 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-04 12:45:26,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-04 12:45:26,993 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 99 [2018-10-04 12:45:26,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:26,993 INFO L225 Difference]: With dead ends: 103 [2018-10-04 12:45:26,993 INFO L226 Difference]: Without dead ends: 101 [2018-10-04 12:45:26,994 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.2s impTime 20 [2018-10-04 12:45:26,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-04 12:45:26,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-04 12:45:26,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-04 12:45:26,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-04 12:45:26,997 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-10-04 12:45:26,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:26,997 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-04 12:45:26,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-04 12:45:26,997 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-04 12:45:26,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-04 12:45:26,998 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:26,998 INFO L375 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-10-04 12:45:26,998 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:26,998 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:26,998 INFO L82 PathProgramCache]: Analyzing trace with hash 784710764, now seen corresponding path program 97 times [2018-10-04 12:45:26,998 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:26,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:26,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:26,999 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:26,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:27,246 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:27,509 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:27,840 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:28,799 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:30,222 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:30,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:30,870 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:30,870 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:45:30,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:45:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:30,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:31,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:31,154 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:31,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-04 12:45:31,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-04 12:45:31,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-04 12:45:31,156 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:31,156 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 100 states. [2018-10-04 12:45:31,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:31,368 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-04 12:45:31,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-04 12:45:31,369 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 100 [2018-10-04 12:45:31,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:31,370 INFO L225 Difference]: With dead ends: 104 [2018-10-04 12:45:31,370 INFO L226 Difference]: Without dead ends: 102 [2018-10-04 12:45:31,370 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s Time 3.4s impTime 21 [2018-10-04 12:45:31,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-10-04 12:45:31,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-10-04 12:45:31,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-10-04 12:45:31,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-10-04 12:45:31,372 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-10-04 12:45:31,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:31,372 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-10-04 12:45:31,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-04 12:45:31,372 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-10-04 12:45:31,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-04 12:45:31,373 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:31,373 INFO L375 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-10-04 12:45:31,373 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:31,373 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:31,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1443768285, now seen corresponding path program 98 times [2018-10-04 12:45:31,373 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:31,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:31,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:31,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:45:31,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:31,603 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:31,961 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:32,546 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:33,510 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:34,868 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:35,981 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:35,982 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:35,982 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:45:35,989 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:45:36,068 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:45:36,068 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:36,071 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:36,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:36,264 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:36,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-04 12:45:36,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-04 12:45:36,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-04 12:45:36,265 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:36,265 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2018-10-04 12:45:36,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:36,576 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-04 12:45:36,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-04 12:45:36,576 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2018-10-04 12:45:36,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:36,577 INFO L225 Difference]: With dead ends: 105 [2018-10-04 12:45:36,577 INFO L226 Difference]: Without dead ends: 103 [2018-10-04 12:45:36,577 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s Time 4.2s impTime 22 [2018-10-04 12:45:36,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-04 12:45:36,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-04 12:45:36,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-04 12:45:36,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-04 12:45:36,579 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-10-04 12:45:36,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:36,580 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-04 12:45:36,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-04 12:45:36,580 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-04 12:45:36,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-04 12:45:36,580 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:36,580 INFO L375 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-10-04 12:45:36,581 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:36,581 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:36,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1807142068, now seen corresponding path program 99 times [2018-10-04 12:45:36,581 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:36,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:36,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:36,582 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:36,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:36,799 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:37,196 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:37,770 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:38,724 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:40,147 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:41,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:41,334 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:41,334 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:45:41,340 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:45:41,451 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2018-10-04 12:45:41,451 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:41,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:41,647 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:41,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-04 12:45:41,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-04 12:45:41,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-04 12:45:41,649 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:41,649 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 102 states. [2018-10-04 12:45:41,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:41,965 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-10-04 12:45:41,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-04 12:45:41,965 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102 [2018-10-04 12:45:41,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:41,966 INFO L225 Difference]: With dead ends: 106 [2018-10-04 12:45:41,966 INFO L226 Difference]: Without dead ends: 104 [2018-10-04 12:45:41,966 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s Time 4.3s impTime 23 [2018-10-04 12:45:41,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-04 12:45:41,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-10-04 12:45:41,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-04 12:45:41,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-10-04 12:45:41,969 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-10-04 12:45:41,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:41,969 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-10-04 12:45:41,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-04 12:45:41,969 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-10-04 12:45:41,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-04 12:45:41,970 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:41,970 INFO L375 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-10-04 12:45:41,970 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:41,970 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:41,970 INFO L82 PathProgramCache]: Analyzing trace with hash -186827453, now seen corresponding path program 100 times [2018-10-04 12:45:41,970 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:41,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:41,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:41,971 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:41,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:42,193 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:42,565 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:43,103 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:43,996 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:45,389 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:46,658 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:46,658 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:46,658 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:45:46,666 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:45:46,740 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:45:46,740 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:46,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:46,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:46,939 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:46,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-04 12:45:46,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-04 12:45:46,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-04 12:45:46,941 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:46,941 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 103 states. [2018-10-04 12:45:47,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:47,243 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-04 12:45:47,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-04 12:45:47,243 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 103 [2018-10-04 12:45:47,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:47,244 INFO L225 Difference]: With dead ends: 107 [2018-10-04 12:45:47,244 INFO L226 Difference]: Without dead ends: 105 [2018-10-04 12:45:47,244 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s Time 4.3s impTime 24 [2018-10-04 12:45:47,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-04 12:45:47,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-04 12:45:47,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-04 12:45:47,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-04 12:45:47,247 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-10-04 12:45:47,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:47,247 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-04 12:45:47,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-04 12:45:47,247 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-04 12:45:47,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-04 12:45:47,248 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:47,248 INFO L375 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-10-04 12:45:47,248 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:47,249 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:47,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1496681940, now seen corresponding path program 101 times [2018-10-04 12:45:47,249 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:47,249 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:47,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:47,250 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:47,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:47,511 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:47,922 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:48,511 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:49,464 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:50,858 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:52,282 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:52,299 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:52,299 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:52,299 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:45:52,308 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:45:52,440 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2018-10-04 12:45:52,440 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:52,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:52,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:52,644 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:52,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-04 12:45:52,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-04 12:45:52,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-04 12:45:52,645 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:52,645 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 104 states. [2018-10-04 12:45:52,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:52,977 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-10-04 12:45:52,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-04 12:45:52,977 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 104 [2018-10-04 12:45:52,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:52,978 INFO L225 Difference]: With dead ends: 108 [2018-10-04 12:45:52,978 INFO L226 Difference]: Without dead ends: 106 [2018-10-04 12:45:52,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1s Time 4.5s impTime 8 [2018-10-04 12:45:52,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-04 12:45:52,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-04 12:45:52,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-04 12:45:52,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-04 12:45:52,981 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-10-04 12:45:52,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:52,982 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-04 12:45:52,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-04 12:45:52,982 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-04 12:45:52,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-04 12:45:52,982 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:52,983 INFO L375 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-10-04 12:45:52,983 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:52,983 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:52,983 INFO L82 PathProgramCache]: Analyzing trace with hash 847501923, now seen corresponding path program 102 times [2018-10-04 12:45:52,983 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:52,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:52,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:52,984 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:52,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:53,187 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:53,606 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:54,082 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:55,334 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:56,504 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:57,958 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:58,062 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:58,062 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:58,062 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:45:58,071 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:45:58,189 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2018-10-04 12:45:58,189 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:58,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:45:58,398 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:58,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-04 12:45:58,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-04 12:45:58,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-04 12:45:58,400 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:58,400 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2018-10-04 12:45:58,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:58,719 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-04 12:45:58,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-04 12:45:58,719 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2018-10-04 12:45:58,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:58,720 INFO L225 Difference]: With dead ends: 109 [2018-10-04 12:45:58,720 INFO L226 Difference]: Without dead ends: 107 [2018-10-04 12:45:58,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1s Time 4.5s impTime 9 [2018-10-04 12:45:58,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-04 12:45:58,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-04 12:45:58,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-04 12:45:58,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-04 12:45:58,722 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-10-04 12:45:58,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:58,723 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-04 12:45:58,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-04 12:45:58,723 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-04 12:45:58,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-04 12:45:58,723 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:58,723 INFO L375 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-10-04 12:45:58,724 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:58,724 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:58,724 INFO L82 PathProgramCache]: Analyzing trace with hash 502757644, now seen corresponding path program 103 times [2018-10-04 12:45:58,724 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:58,724 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:58,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:58,725 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:58,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:58,992 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:59,190 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:59,610 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:00,879 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:01,764 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:02,041 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:02,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:02,099 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:02,099 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:46:02,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:46:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:02,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:02,440 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:02,460 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:02,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-04 12:46:02,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-04 12:46:02,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-04 12:46:02,462 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:02,462 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 106 states. [2018-10-04 12:46:02,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:02,686 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-10-04 12:46:02,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-04 12:46:02,687 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 106 [2018-10-04 12:46:02,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:02,688 INFO L225 Difference]: With dead ends: 110 [2018-10-04 12:46:02,688 INFO L226 Difference]: Without dead ends: 108 [2018-10-04 12:46:02,688 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 2.8s impTime 10 [2018-10-04 12:46:02,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-04 12:46:02,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-10-04 12:46:02,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-10-04 12:46:02,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-10-04 12:46:02,690 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-10-04 12:46:02,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:02,690 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-10-04 12:46:02,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-04 12:46:02,690 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-10-04 12:46:02,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-04 12:46:02,691 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:02,691 INFO L375 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-10-04 12:46:02,691 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:02,691 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:02,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1594380413, now seen corresponding path program 104 times [2018-10-04 12:46:02,691 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:02,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:02,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:02,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:46:02,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:02,866 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:46:03,233 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:03,612 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:03,915 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:04,467 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:05,548 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:05,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:05,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:05,722 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:46:05,730 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:46:05,811 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:46:05,812 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:05,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:06,105 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:06,126 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:06,126 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-04 12:46:06,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-04 12:46:06,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-04 12:46:06,127 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:06,127 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 107 states. [2018-10-04 12:46:06,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:06,343 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-04 12:46:06,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-04 12:46:06,343 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 107 [2018-10-04 12:46:06,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:06,343 INFO L225 Difference]: With dead ends: 111 [2018-10-04 12:46:06,343 INFO L226 Difference]: Without dead ends: 109 [2018-10-04 12:46:06,344 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.5s impTime 11 [2018-10-04 12:46:06,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-04 12:46:06,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-04 12:46:06,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-04 12:46:06,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-04 12:46:06,346 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-10-04 12:46:06,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:06,346 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-04 12:46:06,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-04 12:46:06,347 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-04 12:46:06,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-04 12:46:06,347 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:06,347 INFO L375 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-10-04 12:46:06,347 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:06,348 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:06,348 INFO L82 PathProgramCache]: Analyzing trace with hash 2113816556, now seen corresponding path program 105 times [2018-10-04 12:46:06,348 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:06,348 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:06,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:06,348 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:06,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:06,582 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:46:06,998 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:07,574 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:08,528 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:09,697 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:11,278 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:11,646 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:11,646 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:46:11,658 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:46:11,778 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-10-04 12:46:11,778 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:11,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:11,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:11,987 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:11,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-04 12:46:11,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-04 12:46:11,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-04 12:46:11,989 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:11,989 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 108 states. [2018-10-04 12:46:12,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:12,352 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-10-04 12:46:12,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-04 12:46:12,352 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 108 [2018-10-04 12:46:12,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:12,353 INFO L225 Difference]: With dead ends: 112 [2018-10-04 12:46:12,353 INFO L226 Difference]: Without dead ends: 110 [2018-10-04 12:46:12,353 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3s Time 4.8s impTime 12 [2018-10-04 12:46:12,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-04 12:46:12,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-10-04 12:46:12,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-04 12:46:12,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-10-04 12:46:12,355 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-10-04 12:46:12,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:12,355 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-10-04 12:46:12,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-04 12:46:12,355 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-10-04 12:46:12,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-04 12:46:12,355 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:12,356 INFO L375 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-10-04 12:46:12,356 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:12,356 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:12,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1103805603, now seen corresponding path program 106 times [2018-10-04 12:46:12,356 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:12,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:12,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:12,357 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:12,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:12,544 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:46:12,901 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:13,462 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:14,422 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:14,629 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:15,763 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:16,224 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:16,224 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:46:16,232 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:46:16,324 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:46:16,325 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:16,328 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:16,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:16,542 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:16,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-04 12:46:16,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-04 12:46:16,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-04 12:46:16,543 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:16,543 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 109 states. [2018-10-04 12:46:16,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:16,817 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-04 12:46:16,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-04 12:46:16,818 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 109 [2018-10-04 12:46:16,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:16,818 INFO L225 Difference]: With dead ends: 113 [2018-10-04 12:46:16,818 INFO L226 Difference]: Without dead ends: 111 [2018-10-04 12:46:16,818 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s Time 3.4s impTime 13 [2018-10-04 12:46:16,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-04 12:46:16,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-04 12:46:16,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-04 12:46:16,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-04 12:46:16,821 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-10-04 12:46:16,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:16,821 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-04 12:46:16,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-04 12:46:16,821 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-04 12:46:16,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-04 12:46:16,822 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:16,822 INFO L375 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-10-04 12:46:16,822 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:16,822 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:16,823 INFO L82 PathProgramCache]: Analyzing trace with hash -141762868, now seen corresponding path program 107 times [2018-10-04 12:46:16,823 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:16,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:16,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:16,824 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:16,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:17,065 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:46:17,461 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:18,034 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:18,980 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:20,134 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:21,844 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:22,418 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:22,418 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:22,418 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:46:22,426 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:46:22,565 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-04 12:46:22,565 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:22,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:22,773 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:22,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-04 12:46:22,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-04 12:46:22,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-04 12:46:22,774 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:22,774 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 110 states. [2018-10-04 12:46:23,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:23,135 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-10-04 12:46:23,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-04 12:46:23,135 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 110 [2018-10-04 12:46:23,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:23,136 INFO L225 Difference]: With dead ends: 114 [2018-10-04 12:46:23,136 INFO L226 Difference]: Without dead ends: 112 [2018-10-04 12:46:23,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6s Time 5.1s impTime 14 [2018-10-04 12:46:23,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-10-04 12:46:23,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-10-04 12:46:23,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-04 12:46:23,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-10-04 12:46:23,138 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2018-10-04 12:46:23,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:23,138 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-10-04 12:46:23,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-04 12:46:23,138 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-10-04 12:46:23,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-04 12:46:23,139 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:23,139 INFO L375 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2018-10-04 12:46:23,139 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:23,139 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:23,139 INFO L82 PathProgramCache]: Analyzing trace with hash -99679805, now seen corresponding path program 108 times [2018-10-04 12:46:23,139 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:23,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:23,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:23,140 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:23,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:23,352 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:46:23,709 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:24,287 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:24,570 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:25,021 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:25,998 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 Received shutdown request... [2018-10-04 12:46:26,194 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-04 12:46:26,198 WARN L205 ceAbstractionStarter]: Timeout [2018-10-04 12:46:26,198 INFO L202 PluginConnector]: Adding new model const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 12:46:26 BoogieIcfgContainer [2018-10-04 12:46:26,199 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 12:46:26,199 INFO L168 Benchmark]: Toolchain (without parser) took 236162.63 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -108.0 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 245.2 MB). Peak memory consumption was 137.2 MB. Max. memory is 7.1 GB. [2018-10-04 12:46:26,201 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 12:46:26,201 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.08 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 12:46:26,201 INFO L168 Benchmark]: Boogie Preprocessor took 22.94 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 12:46:26,202 INFO L168 Benchmark]: RCFGBuilder took 272.19 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-04 12:46:26,202 INFO L168 Benchmark]: TraceAbstraction took 235816.92 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -108.0 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 224.0 MB). Peak memory consumption was 116.0 MB. Max. memory is 7.1 GB. [2018-10-04 12:46:26,205 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 0.21 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 46.08 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 22.94 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 272.19 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235816.92 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -108.0 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 224.0 MB). Peak memory consumption was 116.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 37]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 37). Cancelled while BasicCegarLoop was analyzing trace of length 112 with TraceHistMax 108, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 110 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 235.7s OverallTime, 109 OverallIterations, 108 TraceHistogramMax, 16.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 325 SDtfs, 0 SDslu, 4290 SDs, 0 SdLazy, 10283 SolverSat, 154 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11986 GetRequests, 6100 SyntacticMatches, 0 SemanticMatches, 5886 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 198.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=108, 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: 0.2s AutomataMinimizationTime, 108 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.9s SsaConstructionTime, 6.3s SatisfiabilityAnalysisTime, 203.6s InterpolantComputationTime, 12201 NumberOfCodeBlocks, 12201 NumberOfCodeBlocksAsserted, 1718 NumberOfCheckSat, 11986 ConstructedInterpolants, 0 QuantifiedInterpolants, 2601820 SizeOfPredicates, 107 NumberOfNonLiveVariables, 36594 ConjunctsInSsa, 5992 ConjunctsInUnsatCore, 215 InterpolantComputations, 1 PerfectInterpolantSequences, 0/419868 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/const1.i_3.bplTransformedIcfg_BEv2_6.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_12-46-26-215.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/const1.i_3.bplTransformedIcfg_BEv2_6.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_12-46-26-215.csv Completed graceful shutdown