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 0.1.23-00a8621 [2018-09-30 10:43:23,231 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 10:43:23,233 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 10:43:23,246 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-30 10:43:23,247 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-30 10:43:23,250 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-30 10:43:23,251 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-30 10:43:23,253 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-30 10:43:23,255 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-30 10:43:23,256 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-30 10:43:23,257 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-30 10:43:23,287 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 [2018-09-30 10:43:23,301 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 10:43:23,302 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 10:43:23,303 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 10:43:23,303 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 10:43:23,303 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 10:43:23,304 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 10:43:23,304 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 10:43:23,304 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 10:43:23,304 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 10:43:23,304 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 10:43:23,305 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 10:43:23,305 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 10:43:23,305 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 10:43:23,305 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 10:43:23,305 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 10:43:23,305 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 10:43:23,306 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 10:43:23,306 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 10:43:23,306 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 10:43:23,306 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 10:43:23,306 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 10:43:23,307 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 10:43:23,307 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 10:43:23,307 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 10:43:23,307 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 10:43:23,307 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 10:43:23,308 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 10:43:23,308 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 10:43:23,308 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 10:43:23,308 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 10:43:23,308 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-30 10:43:23,351 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 10:43:23,364 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 10:43:23,367 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 10:43:23,369 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 10:43:23,369 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 10:43:23,370 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/const1.i_3.bplTransformedIcfg_BEv2_6.bpl [2018-09-30 10:43:23,371 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/const1.i_3.bplTransformedIcfg_BEv2_6.bpl' [2018-09-30 10:43:23,418 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 10:43:23,421 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 10:43:23,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 10:43:23,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 10:43:23,422 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 10:43:23,443 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 30.09 10:43:23" (1/1) ... [2018-09-30 10:43:23,454 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 30.09 10:43:23" (1/1) ... [2018-09-30 10:43:23,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 10:43:23,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 10:43:23,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 10:43:23,462 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 10:43:23,474 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 30.09 10:43:23" (1/1) ... [2018-09-30 10:43:23,474 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 30.09 10:43:23" (1/1) ... [2018-09-30 10:43:23,475 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 30.09 10:43:23" (1/1) ... [2018-09-30 10:43:23,475 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 30.09 10:43:23" (1/1) ... [2018-09-30 10:43:23,477 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 30.09 10:43:23" (1/1) ... [2018-09-30 10:43:23,479 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 30.09 10:43:23" (1/1) ... [2018-09-30 10:43:23,480 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 30.09 10:43:23" (1/1) ... [2018-09-30 10:43:23,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 10:43:23,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 10:43:23,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 10:43:23,482 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 10:43:23,483 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 30.09 10:43:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 10:43:23,563 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-09-30 10:43:23,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-30 10:43:23,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-30 10:43:23,781 INFO L348 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-30 10:43:23,782 INFO L202 PluginConnector]: Adding new model const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:43:23 BoogieIcfgContainer [2018-09-30 10:43:23,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 10:43:23,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 10:43:23,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 10:43:23,788 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 10:43:23,788 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 30.09 10:43:23" (1/2) ... [2018-09-30 10:43:23,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8b61a1 and model type const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 10:43:23, skipping insertion in model container [2018-09-30 10:43:23,790 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 30.09 10:43:23" (2/2) ... [2018-09-30 10:43:23,793 INFO L112 eAbstractionObserver]: Analyzing ICFG const1.i_3.bplTransformedIcfg_BEv2_6.bpl [2018-09-30 10:43:23,804 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 10:43:23,814 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-30 10:43:23,878 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 10:43:23,879 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 10:43:23,879 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 10:43:23,880 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 10:43:23,880 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 10:43:23,880 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 10:43:23,880 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 10:43:23,880 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 10:43:23,881 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 10:43:23,898 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-09-30 10:43:23,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-30 10:43:23,912 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:23,913 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-30 10:43:23,918 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:23,926 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:23,926 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2018-09-30 10:43:23,928 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:23,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:23,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:23,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:23,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:24,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:24,115 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 10:43:24,116 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 10:43:24,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 10:43:24,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 10:43:24,135 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:24,137 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-09-30 10:43:24,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:24,216 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-09-30 10:43:24,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 10:43:24,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-09-30 10:43:24,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:24,238 INFO L225 Difference]: With dead ends: 9 [2018-09-30 10:43:24,238 INFO L226 Difference]: Without dead ends: 5 [2018-09-30 10:43:24,251 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:24,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-09-30 10:43:24,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-09-30 10:43:24,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-09-30 10:43:24,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-09-30 10:43:24,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-09-30 10:43:24,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:24,338 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-09-30 10:43:24,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 10:43:24,338 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-09-30 10:43:24,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-30 10:43:24,338 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:24,339 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-30 10:43:24,339 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:24,339 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:24,340 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2018-09-30 10:43:24,340 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:24,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:24,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:24,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:24,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:24,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:24,446 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:24,447 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:43:24,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:24,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:24,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:24,604 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:24,604 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-09-30 10:43:24,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-30 10:43:24,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-30 10:43:24,605 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:24,606 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-09-30 10:43:24,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:24,715 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-09-30 10:43:24,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-30 10:43:24,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-09-30 10:43:24,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:24,717 INFO L225 Difference]: With dead ends: 8 [2018-09-30 10:43:24,718 INFO L226 Difference]: Without dead ends: 6 [2018-09-30 10:43:24,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:24,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-09-30 10:43:24,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-09-30 10:43:24,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-09-30 10:43:24,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-09-30 10:43:24,723 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-09-30 10:43:24,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:24,725 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-09-30 10:43:24,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-30 10:43:24,725 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-09-30 10:43:24,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-09-30 10:43:24,725 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:24,726 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-09-30 10:43:24,726 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:24,726 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:24,727 INFO L82 PathProgramCache]: Analyzing trace with hash 28844579, now seen corresponding path program 2 times [2018-09-30 10:43:24,727 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:24,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:24,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:24,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:24,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:24,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:24,783 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:24,784 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:43:24,797 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:43:24,823 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:43:24,824 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:24,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:24,871 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:24,871 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-09-30 10:43:24,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-30 10:43:24,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-30 10:43:24,872 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:24,872 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-09-30 10:43:25,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:25,017 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-09-30 10:43:25,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 10:43:25,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-09-30 10:43:25,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:25,019 INFO L225 Difference]: With dead ends: 9 [2018-09-30 10:43:25,019 INFO L226 Difference]: Without dead ends: 7 [2018-09-30 10:43:25,020 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:25,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-30 10:43:25,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-30 10:43:25,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-30 10:43:25,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-30 10:43:25,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-09-30 10:43:25,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:25,023 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-30 10:43:25,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-30 10:43:25,023 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-30 10:43:25,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-30 10:43:25,024 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:25,024 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-09-30 10:43:25,024 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:25,025 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:25,025 INFO L82 PathProgramCache]: Analyzing trace with hash 894183756, now seen corresponding path program 3 times [2018-09-30 10:43:25,025 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:25,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:25,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:25,026 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:25,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:25,287 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:25,288 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:25,288 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:43:25,300 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:43:25,327 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-09-30 10:43:25,327 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:25,329 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:25,354 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:25,375 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:25,375 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-09-30 10:43:25,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-30 10:43:25,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-30 10:43:25,376 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:25,376 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-09-30 10:43:25,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:25,513 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-09-30 10:43:25,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-30 10:43:25,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-09-30 10:43:25,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:25,515 INFO L225 Difference]: With dead ends: 10 [2018-09-30 10:43:25,517 INFO L226 Difference]: Without dead ends: 8 [2018-09-30 10:43:25,517 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:25,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-09-30 10:43:25,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-09-30 10:43:25,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-09-30 10:43:25,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-09-30 10:43:25,521 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-09-30 10:43:25,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:25,521 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-09-30 10:43:25,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-30 10:43:25,522 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-09-30 10:43:25,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-30 10:43:25,522 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:25,522 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-09-30 10:43:25,523 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:25,523 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:25,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1949894467, now seen corresponding path program 4 times [2018-09-30 10:43:25,523 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:25,523 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:25,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:25,524 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:25,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:25,609 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:25,609 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:25,610 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:43:25,618 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:43:25,647 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:43:25,648 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:25,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:25,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:25,769 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:25,769 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-30 10:43:25,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-30 10:43:25,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-30 10:43:25,770 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:25,770 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-09-30 10:43:25,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:25,831 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-09-30 10:43:25,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-30 10:43:25,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-09-30 10:43:25,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:25,834 INFO L225 Difference]: With dead ends: 11 [2018-09-30 10:43:25,834 INFO L226 Difference]: Without dead ends: 9 [2018-09-30 10:43:25,835 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:25,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-09-30 10:43:25,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-09-30 10:43:25,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-30 10:43:25,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-09-30 10:43:25,838 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-09-30 10:43:25,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:25,838 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-09-30 10:43:25,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-30 10:43:25,838 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-09-30 10:43:25,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 10:43:25,839 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:25,839 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-09-30 10:43:25,839 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:25,840 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:25,840 INFO L82 PathProgramCache]: Analyzing trace with hash 317188140, now seen corresponding path program 5 times [2018-09-30 10:43:25,840 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:25,840 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:25,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:25,841 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:25,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:25,956 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:25,956 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 [2018-09-30 10:43:25,964 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:43:25,976 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-09-30 10:43:25,977 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:25,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:26,011 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:26,032 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:26,032 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-09-30 10:43:26,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-30 10:43:26,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-30 10:43:26,033 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:26,033 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-09-30 10:43:26,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:26,247 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-09-30 10:43:26,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-30 10:43:26,248 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-09-30 10:43:26,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:26,249 INFO L225 Difference]: With dead ends: 12 [2018-09-30 10:43:26,249 INFO L226 Difference]: Without dead ends: 10 [2018-09-30 10:43:26,250 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:26,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-09-30 10:43:26,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-09-30 10:43:26,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-09-30 10:43:26,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-09-30 10:43:26,255 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-09-30 10:43:26,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:26,256 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-09-30 10:43:26,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-30 10:43:26,256 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-09-30 10:43:26,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-09-30 10:43:26,261 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:26,261 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-09-30 10:43:26,261 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:26,262 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:26,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1242899555, now seen corresponding path program 6 times [2018-09-30 10:43:26,262 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:26,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:26,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:26,263 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:26,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:26,649 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:26,650 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:26,650 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 [2018-09-30 10:43:26,659 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:43:26,670 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-09-30 10:43:26,671 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:26,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:26,754 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:26,775 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:26,776 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-09-30 10:43:26,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-30 10:43:26,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-30 10:43:26,776 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:26,777 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-09-30 10:43:26,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:26,859 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-09-30 10:43:26,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-30 10:43:26,860 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-09-30 10:43:26,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:26,861 INFO L225 Difference]: With dead ends: 13 [2018-09-30 10:43:26,861 INFO L226 Difference]: Without dead ends: 11 [2018-09-30 10:43:26,861 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:26,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-09-30 10:43:26,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-09-30 10:43:26,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-09-30 10:43:26,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-09-30 10:43:26,865 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-09-30 10:43:26,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:26,865 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-09-30 10:43:26,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-30 10:43:26,865 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-09-30 10:43:26,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-30 10:43:26,866 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:26,866 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-09-30 10:43:26,866 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:26,867 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:26,867 INFO L82 PathProgramCache]: Analyzing trace with hash -124817652, now seen corresponding path program 7 times [2018-09-30 10:43:26,867 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:26,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:26,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:26,868 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:26,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:26,951 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:26,952 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:26,952 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 [2018-09-30 10:43:26,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:26,986 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:27,032 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:27,057 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:27,057 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-09-30 10:43:27,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-30 10:43:27,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-30 10:43:27,058 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:27,058 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-09-30 10:43:27,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:27,174 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-09-30 10:43:27,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-30 10:43:27,179 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-09-30 10:43:27,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:27,180 INFO L225 Difference]: With dead ends: 14 [2018-09-30 10:43:27,180 INFO L226 Difference]: Without dead ends: 12 [2018-09-30 10:43:27,181 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:27,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-09-30 10:43:27,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-09-30 10:43:27,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-09-30 10:43:27,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-09-30 10:43:27,184 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-09-30 10:43:27,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:27,184 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-09-30 10:43:27,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-30 10:43:27,185 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-09-30 10:43:27,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-30 10:43:27,185 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:27,185 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-09-30 10:43:27,185 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:27,185 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:27,186 INFO L82 PathProgramCache]: Analyzing trace with hash 425621891, now seen corresponding path program 8 times [2018-09-30 10:43:27,186 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:27,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:27,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:27,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:27,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:27,430 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:27,431 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:27,431 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 [2018-09-30 10:43:27,444 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:43:27,476 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:43:27,477 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:27,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:27,514 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:27,535 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:27,535 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-09-30 10:43:27,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-30 10:43:27,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-30 10:43:27,536 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:27,539 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-09-30 10:43:27,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:27,697 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-09-30 10:43:27,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-30 10:43:27,698 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-09-30 10:43:27,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:27,699 INFO L225 Difference]: With dead ends: 15 [2018-09-30 10:43:27,699 INFO L226 Difference]: Without dead ends: 13 [2018-09-30 10:43:27,700 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:27,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-30 10:43:27,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-09-30 10:43:27,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-09-30 10:43:27,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-09-30 10:43:27,703 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-09-30 10:43:27,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:27,703 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-09-30 10:43:27,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-30 10:43:27,703 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-09-30 10:43:27,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-30 10:43:27,704 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:27,704 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-09-30 10:43:27,704 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:27,705 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:27,705 INFO L82 PathProgramCache]: Analyzing trace with hash 309378540, now seen corresponding path program 9 times [2018-09-30 10:43:27,705 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:27,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:27,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:27,706 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:27,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:27,836 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:27,837 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:27,837 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 [2018-09-30 10:43:27,846 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:43:27,870 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-09-30 10:43:27,871 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:27,872 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:27,965 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:27,986 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:27,986 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-09-30 10:43:27,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-30 10:43:27,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-30 10:43:27,987 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:27,987 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-09-30 10:43:28,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:28,082 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-09-30 10:43:28,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-30 10:43:28,083 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-09-30 10:43:28,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:28,084 INFO L225 Difference]: With dead ends: 16 [2018-09-30 10:43:28,084 INFO L226 Difference]: Without dead ends: 14 [2018-09-30 10:43:28,085 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:28,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-30 10:43:28,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-30 10:43:28,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-30 10:43:28,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-09-30 10:43:28,088 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-09-30 10:43:28,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:28,089 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-09-30 10:43:28,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-30 10:43:28,089 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-09-30 10:43:28,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-30 10:43:28,089 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:28,090 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-09-30 10:43:28,090 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:28,090 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:28,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1000801955, now seen corresponding path program 10 times [2018-09-30 10:43:28,090 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:28,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:28,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:28,091 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:28,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:28,225 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:28,225 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:28,225 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 10:43:28,233 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:43:28,259 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:43:28,259 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:28,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:28,319 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:28,340 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:28,341 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-09-30 10:43:28,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 10:43:28,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 10:43:28,341 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:28,342 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-09-30 10:43:28,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:28,498 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-09-30 10:43:28,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 10:43:28,499 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-09-30 10:43:28,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:28,499 INFO L225 Difference]: With dead ends: 17 [2018-09-30 10:43:28,499 INFO L226 Difference]: Without dead ends: 15 [2018-09-30 10:43:28,500 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:28,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-09-30 10:43:28,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-09-30 10:43:28,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-30 10:43:28,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-09-30 10:43:28,503 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-09-30 10:43:28,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:28,504 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-09-30 10:43:28,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 10:43:28,504 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-09-30 10:43:28,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-30 10:43:28,504 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:28,505 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-09-30 10:43:28,505 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:28,505 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:28,505 INFO L82 PathProgramCache]: Analyzing trace with hash 960091340, now seen corresponding path program 11 times [2018-09-30 10:43:28,505 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:28,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:28,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:28,506 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:28,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:28,691 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:28,691 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:28,691 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 [2018-09-30 10:43:28,699 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:43:28,718 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-09-30 10:43:28,719 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:28,722 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:28,773 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:28,794 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:28,795 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-09-30 10:43:28,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-30 10:43:28,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-30 10:43:28,795 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:28,795 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-09-30 10:43:28,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:28,905 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-09-30 10:43:28,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-30 10:43:28,905 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-09-30 10:43:28,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:28,906 INFO L225 Difference]: With dead ends: 18 [2018-09-30 10:43:28,907 INFO L226 Difference]: Without dead ends: 16 [2018-09-30 10:43:28,907 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:28,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-09-30 10:43:28,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-09-30 10:43:28,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-09-30 10:43:28,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-09-30 10:43:28,912 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-09-30 10:43:28,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:28,912 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-09-30 10:43:28,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-30 10:43:28,912 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-09-30 10:43:28,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-30 10:43:28,913 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:28,913 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-09-30 10:43:28,913 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:28,914 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:28,914 INFO L82 PathProgramCache]: Analyzing trace with hash -301937725, now seen corresponding path program 12 times [2018-09-30 10:43:28,914 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:28,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:28,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:28,915 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:28,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:29,036 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:29,037 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:29,037 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 [2018-09-30 10:43:29,045 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:43:29,064 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-30 10:43:29,065 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:29,067 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:29,123 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:29,150 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:29,150 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-09-30 10:43:29,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 10:43:29,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 10:43:29,151 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:29,151 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-09-30 10:43:29,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:29,287 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-09-30 10:43:29,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-30 10:43:29,288 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-09-30 10:43:29,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:29,288 INFO L225 Difference]: With dead ends: 19 [2018-09-30 10:43:29,288 INFO L226 Difference]: Without dead ends: 17 [2018-09-30 10:43:29,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:29,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-09-30 10:43:29,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-09-30 10:43:29,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-09-30 10:43:29,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-09-30 10:43:29,293 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-09-30 10:43:29,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:29,294 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-09-30 10:43:29,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 10:43:29,294 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-09-30 10:43:29,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-30 10:43:29,294 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:29,294 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-09-30 10:43:29,295 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:29,295 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:29,295 INFO L82 PathProgramCache]: Analyzing trace with hash -770133076, now seen corresponding path program 13 times [2018-09-30 10:43:29,295 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:29,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:29,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:29,296 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:29,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:29,431 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:29,432 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:29,432 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 [2018-09-30 10:43:29,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:29,464 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:29,519 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:29,541 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:29,542 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-09-30 10:43:29,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 10:43:29,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 10:43:29,543 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:29,543 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-09-30 10:43:29,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:29,815 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-09-30 10:43:29,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-30 10:43:29,816 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-09-30 10:43:29,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:29,817 INFO L225 Difference]: With dead ends: 20 [2018-09-30 10:43:29,817 INFO L226 Difference]: Without dead ends: 18 [2018-09-30 10:43:29,817 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:29,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-09-30 10:43:29,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-09-30 10:43:29,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-09-30 10:43:29,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-09-30 10:43:29,822 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-09-30 10:43:29,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:29,822 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-09-30 10:43:29,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 10:43:29,822 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-09-30 10:43:29,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-30 10:43:29,823 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:29,823 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-09-30 10:43:29,823 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:29,823 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:29,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1895680227, now seen corresponding path program 14 times [2018-09-30 10:43:29,824 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:29,824 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:29,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:29,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:29,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:30,040 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:30,040 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:30,040 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 [2018-09-30 10:43:30,066 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:43:30,098 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:43:30,098 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:30,099 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:30,161 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:30,182 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:30,182 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-09-30 10:43:30,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-30 10:43:30,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-30 10:43:30,183 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:30,183 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-09-30 10:43:30,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:30,304 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-30 10:43:30,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-30 10:43:30,305 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-09-30 10:43:30,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:30,306 INFO L225 Difference]: With dead ends: 21 [2018-09-30 10:43:30,306 INFO L226 Difference]: Without dead ends: 19 [2018-09-30 10:43:30,306 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:30,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-30 10:43:30,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-09-30 10:43:30,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-30 10:43:30,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-09-30 10:43:30,312 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-09-30 10:43:30,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:30,312 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-09-30 10:43:30,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-30 10:43:30,312 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-09-30 10:43:30,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 10:43:30,313 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:30,313 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-09-30 10:43:30,313 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:30,313 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:30,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1363453300, now seen corresponding path program 15 times [2018-09-30 10:43:30,313 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:30,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:30,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:30,315 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:30,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:30,526 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:30,526 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:30,527 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 [2018-09-30 10:43:30,535 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:43:30,554 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-09-30 10:43:30,554 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:30,556 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:30,623 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:30,644 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:30,644 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-09-30 10:43:30,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-30 10:43:30,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-30 10:43:30,645 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:30,645 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-09-30 10:43:31,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:31,009 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-09-30 10:43:31,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-30 10:43:31,009 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-09-30 10:43:31,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:31,010 INFO L225 Difference]: With dead ends: 22 [2018-09-30 10:43:31,010 INFO L226 Difference]: Without dead ends: 20 [2018-09-30 10:43:31,011 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:31,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-09-30 10:43:31,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-09-30 10:43:31,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-09-30 10:43:31,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-09-30 10:43:31,015 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-09-30 10:43:31,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:31,015 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-09-30 10:43:31,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-30 10:43:31,016 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-09-30 10:43:31,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-30 10:43:31,016 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:31,016 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-09-30 10:43:31,016 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:31,017 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:31,017 INFO L82 PathProgramCache]: Analyzing trace with hash 682622467, now seen corresponding path program 16 times [2018-09-30 10:43:31,017 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:31,017 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:31,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:31,018 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:31,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:31,439 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:31,440 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:31,440 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 [2018-09-30 10:43:31,449 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:43:31,479 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:43:31,480 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:31,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:31,816 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:31,836 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:31,837 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-09-30 10:43:31,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-30 10:43:31,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-30 10:43:31,837 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:31,837 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-09-30 10:43:31,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:31,993 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-09-30 10:43:31,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-30 10:43:31,995 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-09-30 10:43:31,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:31,996 INFO L225 Difference]: With dead ends: 23 [2018-09-30 10:43:31,996 INFO L226 Difference]: Without dead ends: 21 [2018-09-30 10:43:31,996 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:31,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-09-30 10:43:31,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-09-30 10:43:31,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-09-30 10:43:31,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-09-30 10:43:31,999 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-09-30 10:43:31,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:31,999 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-09-30 10:43:31,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-30 10:43:32,000 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-09-30 10:43:32,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-30 10:43:32,000 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:32,000 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-09-30 10:43:32,000 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:32,001 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:32,001 INFO L82 PathProgramCache]: Analyzing trace with hash -313538196, now seen corresponding path program 17 times [2018-09-30 10:43:32,001 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:32,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:32,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:32,002 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:32,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:32,198 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:32,198 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:32,199 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 [2018-09-30 10:43:32,206 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:43:32,228 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-09-30 10:43:32,229 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:32,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:32,321 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:32,344 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:32,344 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-09-30 10:43:32,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-30 10:43:32,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-30 10:43:32,345 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:32,345 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-09-30 10:43:32,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:32,508 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-09-30 10:43:32,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-30 10:43:32,508 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-09-30 10:43:32,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:32,509 INFO L225 Difference]: With dead ends: 24 [2018-09-30 10:43:32,509 INFO L226 Difference]: Without dead ends: 22 [2018-09-30 10:43:32,510 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:32,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-09-30 10:43:32,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-09-30 10:43:32,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-09-30 10:43:32,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-09-30 10:43:32,514 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-09-30 10:43:32,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:32,515 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-09-30 10:43:32,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-30 10:43:32,515 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-09-30 10:43:32,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-30 10:43:32,515 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:32,516 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-09-30 10:43:32,516 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:32,516 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:32,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1129747677, now seen corresponding path program 18 times [2018-09-30 10:43:32,516 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:32,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:32,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:32,517 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:32,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:32,659 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:32,659 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:32,660 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 [2018-09-30 10:43:32,671 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:43:32,711 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-09-30 10:43:32,711 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:32,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:32,867 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:32,898 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:32,898 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-09-30 10:43:32,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-30 10:43:32,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-30 10:43:32,899 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:32,899 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-09-30 10:43:33,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:33,059 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-09-30 10:43:33,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-30 10:43:33,060 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-09-30 10:43:33,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:33,061 INFO L225 Difference]: With dead ends: 25 [2018-09-30 10:43:33,061 INFO L226 Difference]: Without dead ends: 23 [2018-09-30 10:43:33,061 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:33,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-30 10:43:33,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-09-30 10:43:33,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-09-30 10:43:33,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-09-30 10:43:33,065 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-09-30 10:43:33,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:33,066 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-09-30 10:43:33,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-30 10:43:33,066 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-09-30 10:43:33,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-30 10:43:33,067 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:33,067 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-09-30 10:43:33,067 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:33,067 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:33,068 INFO L82 PathProgramCache]: Analyzing trace with hash -662437812, now seen corresponding path program 19 times [2018-09-30 10:43:33,068 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:33,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:33,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:33,069 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:33,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:33,204 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:33,204 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:33,204 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 [2018-09-30 10:43:33,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:33,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:33,408 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:33,439 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:33,439 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-09-30 10:43:33,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-30 10:43:33,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-30 10:43:33,440 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:33,440 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-09-30 10:43:33,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:33,760 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-09-30 10:43:33,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-30 10:43:33,761 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-09-30 10:43:33,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:33,761 INFO L225 Difference]: With dead ends: 26 [2018-09-30 10:43:33,762 INFO L226 Difference]: Without dead ends: 24 [2018-09-30 10:43:33,762 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:33,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-30 10:43:33,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-09-30 10:43:33,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-30 10:43:33,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-09-30 10:43:33,765 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-09-30 10:43:33,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:33,766 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-09-30 10:43:33,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-09-30 10:43:33,766 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-09-30 10:43:33,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-09-30 10:43:33,766 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:33,767 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-09-30 10:43:33,767 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:33,767 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:33,767 INFO L82 PathProgramCache]: Analyzing trace with hash 939266115, now seen corresponding path program 20 times [2018-09-30 10:43:33,767 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:33,767 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:33,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:33,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:33,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:34,115 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:34,116 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:34,116 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 [2018-09-30 10:43:34,124 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:43:34,141 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:43:34,142 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:34,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:34,242 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:34,243 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-09-30 10:43:34,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-30 10:43:34,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-30 10:43:34,243 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:34,244 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-09-30 10:43:34,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:34,384 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-09-30 10:43:34,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 10:43:34,385 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-09-30 10:43:34,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:34,386 INFO L225 Difference]: With dead ends: 27 [2018-09-30 10:43:34,386 INFO L226 Difference]: Without dead ends: 25 [2018-09-30 10:43:34,386 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:34,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-09-30 10:43:34,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-09-30 10:43:34,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-09-30 10:43:34,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-09-30 10:43:34,391 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-09-30 10:43:34,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:34,391 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-09-30 10:43:34,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-30 10:43:34,391 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-09-30 10:43:34,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-30 10:43:34,392 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:34,392 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-09-30 10:43:34,392 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:34,392 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:34,393 INFO L82 PathProgramCache]: Analyzing trace with hash -947519700, now seen corresponding path program 21 times [2018-09-30 10:43:34,393 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:34,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:34,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:34,394 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:34,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:34,546 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:34,546 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 [2018-09-30 10:43:34,555 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:43:34,578 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-09-30 10:43:34,579 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:34,582 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:34,902 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:34,941 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:34,941 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-09-30 10:43:34,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-30 10:43:34,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-30 10:43:34,942 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:34,942 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-09-30 10:43:35,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:35,354 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-09-30 10:43:35,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-30 10:43:35,357 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-09-30 10:43:35,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:35,358 INFO L225 Difference]: With dead ends: 28 [2018-09-30 10:43:35,358 INFO L226 Difference]: Without dead ends: 26 [2018-09-30 10:43:35,358 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:35,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-09-30 10:43:35,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-09-30 10:43:35,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-09-30 10:43:35,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-09-30 10:43:35,361 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-09-30 10:43:35,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:35,361 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-09-30 10:43:35,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-30 10:43:35,361 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-09-30 10:43:35,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-09-30 10:43:35,362 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:35,362 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-09-30 10:43:35,362 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:35,362 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:35,362 INFO L82 PathProgramCache]: Analyzing trace with hash 691662179, now seen corresponding path program 22 times [2018-09-30 10:43:35,362 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:35,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:35,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:35,363 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:35,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:35,544 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:35,545 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:35,545 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 [2018-09-30 10:43:35,557 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:43:35,576 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:43:35,576 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:35,578 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:35,787 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:35,788 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-09-30 10:43:35,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-09-30 10:43:35,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-09-30 10:43:35,788 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:35,789 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-09-30 10:43:36,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:36,061 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-09-30 10:43:36,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-30 10:43:36,062 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-09-30 10:43:36,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:36,062 INFO L225 Difference]: With dead ends: 29 [2018-09-30 10:43:36,062 INFO L226 Difference]: Without dead ends: 27 [2018-09-30 10:43:36,063 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:36,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-09-30 10:43:36,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-09-30 10:43:36,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-09-30 10:43:36,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-09-30 10:43:36,067 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-09-30 10:43:36,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:36,067 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-09-30 10:43:36,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-09-30 10:43:36,067 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-09-30 10:43:36,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-30 10:43:36,068 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:36,068 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-09-30 10:43:36,068 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:36,068 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:36,068 INFO L82 PathProgramCache]: Analyzing trace with hash -33307124, now seen corresponding path program 23 times [2018-09-30 10:43:36,068 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:36,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:36,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:36,069 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:36,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:36,438 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:36,438 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:36,438 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 10:43:36,445 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:43:36,475 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-09-30 10:43:36,475 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:36,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:36,571 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:36,592 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:36,593 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-09-30 10:43:36,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-09-30 10:43:36,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-09-30 10:43:36,593 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:36,593 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-09-30 10:43:36,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:36,865 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-09-30 10:43:36,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-30 10:43:36,866 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-09-30 10:43:36,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:36,866 INFO L225 Difference]: With dead ends: 30 [2018-09-30 10:43:36,867 INFO L226 Difference]: Without dead ends: 28 [2018-09-30 10:43:36,867 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:36,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-09-30 10:43:36,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-09-30 10:43:36,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-09-30 10:43:36,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-09-30 10:43:36,872 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-09-30 10:43:36,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:36,872 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-09-30 10:43:36,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-09-30 10:43:36,872 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-09-30 10:43:36,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-30 10:43:36,873 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:36,873 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-09-30 10:43:36,873 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:36,873 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:36,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1032519037, now seen corresponding path program 24 times [2018-09-30 10:43:36,874 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:36,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:36,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:36,875 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:36,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:37,012 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:37,013 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 [2018-09-30 10:43:37,034 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:43:37,059 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-09-30 10:43:37,060 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:37,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:37,224 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:37,245 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:37,246 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-09-30 10:43:37,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-09-30 10:43:37,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-09-30 10:43:37,246 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:37,246 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-09-30 10:43:37,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:37,415 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-09-30 10:43:37,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-30 10:43:37,415 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-09-30 10:43:37,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:37,416 INFO L225 Difference]: With dead ends: 31 [2018-09-30 10:43:37,416 INFO L226 Difference]: Without dead ends: 29 [2018-09-30 10:43:37,417 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:37,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-09-30 10:43:37,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-09-30 10:43:37,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-30 10:43:37,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-09-30 10:43:37,421 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-09-30 10:43:37,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:37,421 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-09-30 10:43:37,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-09-30 10:43:37,421 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-09-30 10:43:37,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-30 10:43:37,422 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:37,422 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-09-30 10:43:37,422 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:37,423 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:37,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1943317268, now seen corresponding path program 25 times [2018-09-30 10:43:37,423 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:37,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:37,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:37,424 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:37,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:37,630 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:37,630 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:37,630 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 [2018-09-30 10:43:37,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:37,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:37,719 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:37,740 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:37,741 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-09-30 10:43:37,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-30 10:43:37,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-30 10:43:37,741 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:37,742 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-09-30 10:43:37,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:37,935 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-09-30 10:43:37,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-30 10:43:37,935 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-09-30 10:43:37,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:37,936 INFO L225 Difference]: With dead ends: 32 [2018-09-30 10:43:37,936 INFO L226 Difference]: Without dead ends: 30 [2018-09-30 10:43:37,936 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:37,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-09-30 10:43:37,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-09-30 10:43:37,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-09-30 10:43:37,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-09-30 10:43:37,939 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-09-30 10:43:37,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:37,940 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-09-30 10:43:37,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-30 10:43:37,940 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-09-30 10:43:37,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-09-30 10:43:37,940 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:37,940 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-09-30 10:43:37,941 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:37,941 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:37,941 INFO L82 PathProgramCache]: Analyzing trace with hash -113291357, now seen corresponding path program 26 times [2018-09-30 10:43:37,941 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:37,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:37,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:37,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:37,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:38,285 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:38,286 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:38,286 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 [2018-09-30 10:43:38,294 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:43:38,318 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:43:38,318 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:38,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:38,420 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:38,441 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:38,441 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-09-30 10:43:38,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-09-30 10:43:38,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-09-30 10:43:38,442 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:38,442 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-09-30 10:43:38,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:38,831 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-09-30 10:43:38,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-30 10:43:38,832 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-09-30 10:43:38,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:38,832 INFO L225 Difference]: With dead ends: 33 [2018-09-30 10:43:38,832 INFO L226 Difference]: Without dead ends: 31 [2018-09-30 10:43:38,833 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:38,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-30 10:43:38,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-09-30 10:43:38,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-30 10:43:38,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-09-30 10:43:38,837 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-09-30 10:43:38,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:38,837 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-09-30 10:43:38,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-09-30 10:43:38,837 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-09-30 10:43:38,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-30 10:43:38,838 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:38,838 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-09-30 10:43:38,838 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:38,838 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:38,838 INFO L82 PathProgramCache]: Analyzing trace with hash 782937036, now seen corresponding path program 27 times [2018-09-30 10:43:38,838 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:38,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:38,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:38,839 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:38,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:39,451 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:39,451 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:39,451 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 [2018-09-30 10:43:39,460 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:43:39,493 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-09-30 10:43:39,493 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:39,495 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:39,592 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:39,615 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:39,615 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-09-30 10:43:39,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-09-30 10:43:39,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-09-30 10:43:39,615 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:39,616 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-09-30 10:43:39,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:39,800 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-09-30 10:43:39,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-30 10:43:39,800 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-09-30 10:43:39,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:39,801 INFO L225 Difference]: With dead ends: 34 [2018-09-30 10:43:39,801 INFO L226 Difference]: Without dead ends: 32 [2018-09-30 10:43:39,801 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:39,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-09-30 10:43:39,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-09-30 10:43:39,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-09-30 10:43:39,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-09-30 10:43:39,805 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-09-30 10:43:39,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:39,805 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-09-30 10:43:39,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-09-30 10:43:39,805 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-09-30 10:43:39,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-30 10:43:39,805 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:39,806 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-09-30 10:43:39,806 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:39,806 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:39,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1498753853, now seen corresponding path program 28 times [2018-09-30 10:43:39,806 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:39,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:39,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:39,807 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:39,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:40,897 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:40,897 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:40,898 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 [2018-09-30 10:43:40,912 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:43:40,951 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:43:40,952 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:40,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:41,056 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:41,056 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-09-30 10:43:41,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-09-30 10:43:41,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-09-30 10:43:41,057 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:41,057 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-09-30 10:43:41,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:41,205 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-09-30 10:43:41,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-30 10:43:41,205 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-09-30 10:43:41,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:41,206 INFO L225 Difference]: With dead ends: 35 [2018-09-30 10:43:41,206 INFO L226 Difference]: Without dead ends: 33 [2018-09-30 10:43:41,207 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:41,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-09-30 10:43:41,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-09-30 10:43:41,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-09-30 10:43:41,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-09-30 10:43:41,209 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-09-30 10:43:41,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:41,210 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-09-30 10:43:41,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-09-30 10:43:41,210 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-09-30 10:43:41,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-09-30 10:43:41,211 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:41,211 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-09-30 10:43:41,211 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:41,211 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:41,211 INFO L82 PathProgramCache]: Analyzing trace with hash 783272620, now seen corresponding path program 29 times [2018-09-30 10:43:41,211 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:41,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:41,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:41,212 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:41,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:41,411 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:41,412 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:41,412 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 [2018-09-30 10:43:41,420 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:43:41,451 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-09-30 10:43:41,451 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:41,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:41,544 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:41,544 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-09-30 10:43:41,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-30 10:43:41,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-30 10:43:41,545 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:41,545 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-09-30 10:43:41,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:41,758 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-09-30 10:43:41,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-30 10:43:41,758 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-09-30 10:43:41,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:41,759 INFO L225 Difference]: With dead ends: 36 [2018-09-30 10:43:41,759 INFO L226 Difference]: Without dead ends: 34 [2018-09-30 10:43:41,760 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:41,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-09-30 10:43:41,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-09-30 10:43:41,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-30 10:43:41,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-09-30 10:43:41,763 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-09-30 10:43:41,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:41,764 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-09-30 10:43:41,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-30 10:43:41,764 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-09-30 10:43:41,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-09-30 10:43:41,764 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:41,764 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-09-30 10:43:41,765 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:41,765 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:41,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1488350749, now seen corresponding path program 30 times [2018-09-30 10:43:41,765 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:41,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:41,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:41,766 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:41,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:41,968 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:41,968 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:41,968 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 [2018-09-30 10:43:41,978 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:43:42,012 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-09-30 10:43:42,012 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:42,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:42,114 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:42,136 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:42,137 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-09-30 10:43:42,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-09-30 10:43:42,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-09-30 10:43:42,137 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:42,137 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-09-30 10:43:42,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:42,397 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-09-30 10:43:42,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-30 10:43:42,397 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-09-30 10:43:42,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:42,398 INFO L225 Difference]: With dead ends: 37 [2018-09-30 10:43:42,398 INFO L226 Difference]: Without dead ends: 35 [2018-09-30 10:43:42,398 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:42,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-09-30 10:43:42,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-09-30 10:43:42,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-09-30 10:43:42,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-09-30 10:43:42,401 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-09-30 10:43:42,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:42,402 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-09-30 10:43:42,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-09-30 10:43:42,402 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-09-30 10:43:42,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-30 10:43:42,402 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:42,403 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-09-30 10:43:42,403 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:42,403 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:42,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1105768844, now seen corresponding path program 31 times [2018-09-30 10:43:42,403 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:42,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:42,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:42,404 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:42,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:42,566 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:42,566 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 [2018-09-30 10:43:42,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:42,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:42,684 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:42,685 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-09-30 10:43:42,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-09-30 10:43:42,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-09-30 10:43:42,685 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:42,685 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-09-30 10:43:42,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:42,920 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-09-30 10:43:42,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-30 10:43:42,920 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-09-30 10:43:42,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:42,921 INFO L225 Difference]: With dead ends: 38 [2018-09-30 10:43:42,921 INFO L226 Difference]: Without dead ends: 36 [2018-09-30 10:43:42,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:42,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-09-30 10:43:42,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-09-30 10:43:42,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-09-30 10:43:42,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-09-30 10:43:42,926 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-09-30 10:43:42,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:42,926 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-09-30 10:43:42,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-09-30 10:43:42,926 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-09-30 10:43:42,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-30 10:43:42,927 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:42,927 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-09-30 10:43:42,927 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:42,927 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:42,928 INFO L82 PathProgramCache]: Analyzing trace with hash -80902397, now seen corresponding path program 32 times [2018-09-30 10:43:42,928 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:42,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:42,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:42,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:42,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:43,142 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:43,142 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:43,142 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 [2018-09-30 10:43:43,149 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:43:43,180 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:43:43,180 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:43,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:43,262 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:43,282 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:43,283 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-09-30 10:43:43,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-09-30 10:43:43,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-09-30 10:43:43,283 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:43,283 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-09-30 10:43:43,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:43,503 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-09-30 10:43:43,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-30 10:43:43,504 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-09-30 10:43:43,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:43,504 INFO L225 Difference]: With dead ends: 39 [2018-09-30 10:43:43,504 INFO L226 Difference]: Without dead ends: 37 [2018-09-30 10:43:43,505 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:43,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-09-30 10:43:43,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-09-30 10:43:43,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-09-30 10:43:43,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-09-30 10:43:43,508 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-09-30 10:43:43,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:43,509 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-09-30 10:43:43,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-09-30 10:43:43,509 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-09-30 10:43:43,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-30 10:43:43,510 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:43,510 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-09-30 10:43:43,510 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:43,510 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:43,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1786994796, now seen corresponding path program 33 times [2018-09-30 10:43:43,511 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:43,511 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:43,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:43,511 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:43,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:44,223 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:44,223 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:44,223 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 [2018-09-30 10:43:44,235 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:43:44,267 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-09-30 10:43:44,267 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:44,269 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:44,388 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:44,410 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:44,410 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-09-30 10:43:44,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-30 10:43:44,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-30 10:43:44,411 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:44,411 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-09-30 10:43:44,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:44,592 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-09-30 10:43:44,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-30 10:43:44,592 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-09-30 10:43:44,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:44,593 INFO L225 Difference]: With dead ends: 40 [2018-09-30 10:43:44,593 INFO L226 Difference]: Without dead ends: 38 [2018-09-30 10:43:44,593 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:44,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-09-30 10:43:44,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-09-30 10:43:44,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-09-30 10:43:44,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-09-30 10:43:44,596 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-09-30 10:43:44,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:44,596 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-09-30 10:43:44,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-30 10:43:44,596 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-09-30 10:43:44,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-30 10:43:44,596 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:44,597 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-09-30 10:43:44,597 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:44,597 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:44,597 INFO L82 PathProgramCache]: Analyzing trace with hash -437734365, now seen corresponding path program 34 times [2018-09-30 10:43:44,597 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:44,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:44,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:44,598 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:44,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:45,091 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:45,091 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:45,091 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 [2018-09-30 10:43:45,100 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:43:45,133 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:43:45,133 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:45,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:45,313 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:45,333 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:45,333 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-09-30 10:43:45,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-09-30 10:43:45,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-09-30 10:43:45,334 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:45,334 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-09-30 10:43:45,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:45,562 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-09-30 10:43:45,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-30 10:43:45,563 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-09-30 10:43:45,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:45,563 INFO L225 Difference]: With dead ends: 41 [2018-09-30 10:43:45,564 INFO L226 Difference]: Without dead ends: 39 [2018-09-30 10:43:45,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:45,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-30 10:43:45,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-09-30 10:43:45,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-30 10:43:45,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-09-30 10:43:45,567 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-09-30 10:43:45,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:45,567 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-09-30 10:43:45,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-09-30 10:43:45,567 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-09-30 10:43:45,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-30 10:43:45,568 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:45,568 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-09-30 10:43:45,568 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:45,568 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:45,569 INFO L82 PathProgramCache]: Analyzing trace with hash -684861620, now seen corresponding path program 35 times [2018-09-30 10:43:45,569 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:45,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:45,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:45,569 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:45,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:45,924 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:45,924 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 [2018-09-30 10:43:45,932 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:43:45,971 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-09-30 10:43:45,971 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:45,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:46,049 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:46,070 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:46,070 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-09-30 10:43:46,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-09-30 10:43:46,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-09-30 10:43:46,071 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:46,071 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-09-30 10:43:46,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:46,327 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-09-30 10:43:46,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-30 10:43:46,327 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-09-30 10:43:46,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:46,328 INFO L225 Difference]: With dead ends: 42 [2018-09-30 10:43:46,328 INFO L226 Difference]: Without dead ends: 40 [2018-09-30 10:43:46,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:46,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-09-30 10:43:46,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-09-30 10:43:46,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-09-30 10:43:46,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-09-30 10:43:46,330 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-09-30 10:43:46,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:46,330 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-09-30 10:43:46,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-09-30 10:43:46,330 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-09-30 10:43:46,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-30 10:43:46,331 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:46,331 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-09-30 10:43:46,331 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:46,331 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:46,331 INFO L82 PathProgramCache]: Analyzing trace with hash 244128067, now seen corresponding path program 36 times [2018-09-30 10:43:46,331 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:46,331 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:46,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:46,332 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:46,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:46,544 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:46,545 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:46,545 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 [2018-09-30 10:43:46,553 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:43:46,593 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-09-30 10:43:46,594 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:46,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:47,554 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:47,592 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:47,593 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-09-30 10:43:47,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-09-30 10:43:47,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-09-30 10:43:47,594 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:47,594 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-09-30 10:43:47,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:47,981 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-09-30 10:43:47,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-30 10:43:47,981 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-09-30 10:43:47,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:47,982 INFO L225 Difference]: With dead ends: 43 [2018-09-30 10:43:47,982 INFO L226 Difference]: Without dead ends: 41 [2018-09-30 10:43:47,983 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:47,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-09-30 10:43:47,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-09-30 10:43:47,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-30 10:43:47,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-09-30 10:43:47,985 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-09-30 10:43:47,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:47,985 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-09-30 10:43:47,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-09-30 10:43:47,985 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-09-30 10:43:47,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-30 10:43:47,986 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:47,986 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-09-30 10:43:47,986 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:47,986 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:47,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1021962708, now seen corresponding path program 37 times [2018-09-30 10:43:47,986 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:47,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:47,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:47,987 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:47,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:49,075 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:49,075 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:49,076 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 [2018-09-30 10:43:49,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:49,114 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:49,210 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:49,230 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:49,231 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-09-30 10:43:49,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-30 10:43:49,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-30 10:43:49,231 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:49,231 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-09-30 10:43:49,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:49,484 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-09-30 10:43:49,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-30 10:43:49,484 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-09-30 10:43:49,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:49,485 INFO L225 Difference]: With dead ends: 44 [2018-09-30 10:43:49,485 INFO L226 Difference]: Without dead ends: 42 [2018-09-30 10:43:49,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:49,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-09-30 10:43:49,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-09-30 10:43:49,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-09-30 10:43:49,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-09-30 10:43:49,487 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-09-30 10:43:49,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:49,487 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-09-30 10:43:49,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-30 10:43:49,487 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-09-30 10:43:49,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-09-30 10:43:49,488 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:49,488 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-09-30 10:43:49,488 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:49,488 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:49,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1616071069, now seen corresponding path program 38 times [2018-09-30 10:43:49,488 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:49,489 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:49,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:49,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:49,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:49,812 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:49,812 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:49,812 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 [2018-09-30 10:43:49,819 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:43:49,852 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:43:49,852 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:49,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:49,945 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:49,964 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:49,965 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-09-30 10:43:49,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-09-30 10:43:49,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-09-30 10:43:49,965 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:49,965 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-09-30 10:43:50,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:50,232 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-09-30 10:43:50,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-30 10:43:50,233 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-09-30 10:43:50,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:50,233 INFO L225 Difference]: With dead ends: 45 [2018-09-30 10:43:50,233 INFO L226 Difference]: Without dead ends: 43 [2018-09-30 10:43:50,234 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:50,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-30 10:43:50,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-09-30 10:43:50,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-09-30 10:43:50,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-09-30 10:43:50,236 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-09-30 10:43:50,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:50,237 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-09-30 10:43:50,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-09-30 10:43:50,237 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-09-30 10:43:50,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-30 10:43:50,238 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:50,238 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-09-30 10:43:50,238 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:50,238 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:50,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1441406220, now seen corresponding path program 39 times [2018-09-30 10:43:50,239 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:50,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:50,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:50,240 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:50,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:50,649 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:50,649 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:50,650 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 [2018-09-30 10:43:50,669 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:43:50,707 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-09-30 10:43:50,707 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:50,709 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:50,793 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:50,815 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:50,815 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-09-30 10:43:50,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-09-30 10:43:50,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-09-30 10:43:50,816 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:50,816 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-09-30 10:43:51,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:51,036 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-09-30 10:43:51,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-30 10:43:51,036 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-09-30 10:43:51,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:51,037 INFO L225 Difference]: With dead ends: 46 [2018-09-30 10:43:51,037 INFO L226 Difference]: Without dead ends: 44 [2018-09-30 10:43:51,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:51,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-30 10:43:51,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-09-30 10:43:51,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-30 10:43:51,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-09-30 10:43:51,039 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-09-30 10:43:51,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:51,039 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-09-30 10:43:51,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-09-30 10:43:51,039 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-09-30 10:43:51,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-30 10:43:51,040 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:51,040 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-09-30 10:43:51,040 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:51,040 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:51,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1733921667, now seen corresponding path program 40 times [2018-09-30 10:43:51,040 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:51,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:51,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:51,041 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:51,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:51,673 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:51,673 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:51,673 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 [2018-09-30 10:43:51,681 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:43:51,736 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:43:51,737 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:51,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:52,096 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:52,117 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:52,117 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-09-30 10:43:52,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-09-30 10:43:52,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-09-30 10:43:52,118 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:52,118 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-09-30 10:43:52,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:52,441 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-09-30 10:43:52,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-30 10:43:52,441 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-09-30 10:43:52,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:52,442 INFO L225 Difference]: With dead ends: 47 [2018-09-30 10:43:52,442 INFO L226 Difference]: Without dead ends: 45 [2018-09-30 10:43:52,442 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:52,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-09-30 10:43:52,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-09-30 10:43:52,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-30 10:43:52,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-09-30 10:43:52,444 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-09-30 10:43:52,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:52,444 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-09-30 10:43:52,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-09-30 10:43:52,444 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-09-30 10:43:52,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-09-30 10:43:52,444 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:52,444 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-09-30 10:43:52,445 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:52,445 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:52,445 INFO L82 PathProgramCache]: Analyzing trace with hash -2083001364, now seen corresponding path program 41 times [2018-09-30 10:43:52,445 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:52,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:52,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:52,446 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:52,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:53,308 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:53,308 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:53,308 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 [2018-09-30 10:43:53,315 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:43:53,358 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-09-30 10:43:53,358 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:53,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:53,439 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:53,461 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:53,462 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-09-30 10:43:53,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-30 10:43:53,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-30 10:43:53,462 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:53,462 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-09-30 10:43:53,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:53,929 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-09-30 10:43:53,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-30 10:43:53,929 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-09-30 10:43:53,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:53,930 INFO L225 Difference]: With dead ends: 48 [2018-09-30 10:43:53,930 INFO L226 Difference]: Without dead ends: 46 [2018-09-30 10:43:53,930 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:53,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-09-30 10:43:53,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-09-30 10:43:53,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-09-30 10:43:53,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-09-30 10:43:53,931 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-09-30 10:43:53,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:53,932 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-09-30 10:43:53,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-30 10:43:53,932 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-09-30 10:43:53,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-09-30 10:43:53,932 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:53,933 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-09-30 10:43:53,933 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:53,933 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:53,933 INFO L82 PathProgramCache]: Analyzing trace with hash -148531037, now seen corresponding path program 42 times [2018-09-30 10:43:53,933 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:53,933 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:53,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:53,934 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:53,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:54,251 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:54,251 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:54,251 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 [2018-09-30 10:43:54,258 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:43:54,297 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-09-30 10:43:54,298 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:54,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:54,402 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:54,422 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:54,423 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-09-30 10:43:54,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-09-30 10:43:54,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-09-30 10:43:54,423 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:54,423 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-09-30 10:43:54,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:54,700 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-09-30 10:43:54,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-30 10:43:54,701 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-09-30 10:43:54,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:54,701 INFO L225 Difference]: With dead ends: 49 [2018-09-30 10:43:54,701 INFO L226 Difference]: Without dead ends: 47 [2018-09-30 10:43:54,702 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:54,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-30 10:43:54,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-09-30 10:43:54,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-09-30 10:43:54,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-09-30 10:43:54,704 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-09-30 10:43:54,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:54,704 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-09-30 10:43:54,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-09-30 10:43:54,704 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-09-30 10:43:54,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-30 10:43:54,705 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:54,705 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-09-30 10:43:54,705 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:54,706 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:54,706 INFO L82 PathProgramCache]: Analyzing trace with hash -309493044, now seen corresponding path program 43 times [2018-09-30 10:43:54,706 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:54,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:54,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:54,707 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:54,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:54,925 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:54,925 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:54,926 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 10:43:54,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:54,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:55,070 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:55,091 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:55,091 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-09-30 10:43:55,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-09-30 10:43:55,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-09-30 10:43:55,092 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:55,092 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-09-30 10:43:55,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:55,436 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-09-30 10:43:55,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-30 10:43:55,436 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-09-30 10:43:55,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:55,437 INFO L225 Difference]: With dead ends: 50 [2018-09-30 10:43:55,437 INFO L226 Difference]: Without dead ends: 48 [2018-09-30 10:43:55,437 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:55,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-30 10:43:55,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-30 10:43:55,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-30 10:43:55,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-09-30 10:43:55,439 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-09-30 10:43:55,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:55,439 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-09-30 10:43:55,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-09-30 10:43:55,440 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-09-30 10:43:55,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-09-30 10:43:55,440 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:55,440 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-09-30 10:43:55,441 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:55,441 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:55,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1004347965, now seen corresponding path program 44 times [2018-09-30 10:43:55,441 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:55,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:55,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:55,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:55,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:55,694 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:55,694 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:55,694 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 [2018-09-30 10:43:55,702 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:43:55,736 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:43:55,736 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:55,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:55,835 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:55,855 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:55,856 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-09-30 10:43:55,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-09-30 10:43:55,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-09-30 10:43:55,856 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:55,856 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-09-30 10:43:56,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:56,186 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-09-30 10:43:56,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-30 10:43:56,187 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-09-30 10:43:56,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:56,187 INFO L225 Difference]: With dead ends: 51 [2018-09-30 10:43:56,187 INFO L226 Difference]: Without dead ends: 49 [2018-09-30 10:43:56,188 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:56,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-09-30 10:43:56,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-09-30 10:43:56,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-30 10:43:56,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-09-30 10:43:56,190 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-09-30 10:43:56,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:56,190 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-09-30 10:43:56,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-09-30 10:43:56,191 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-09-30 10:43:56,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-30 10:43:56,191 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:56,191 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-09-30 10:43:56,192 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:56,192 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:56,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1070014036, now seen corresponding path program 45 times [2018-09-30 10:43:56,192 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:56,192 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:56,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:56,193 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:56,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:56,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:56,503 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:56,503 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 [2018-09-30 10:43:56,524 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:43:56,569 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-09-30 10:43:56,570 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:56,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:56,727 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:56,727 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-09-30 10:43:56,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-30 10:43:56,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-30 10:43:56,728 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:56,728 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-09-30 10:43:57,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:57,184 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-09-30 10:43:57,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-30 10:43:57,184 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-09-30 10:43:57,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:57,185 INFO L225 Difference]: With dead ends: 52 [2018-09-30 10:43:57,185 INFO L226 Difference]: Without dead ends: 50 [2018-09-30 10:43:57,185 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:57,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-09-30 10:43:57,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-09-30 10:43:57,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-09-30 10:43:57,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-09-30 10:43:57,187 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-09-30 10:43:57,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:57,187 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-09-30 10:43:57,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-30 10:43:57,187 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-09-30 10:43:57,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-09-30 10:43:57,188 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:57,188 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-09-30 10:43:57,188 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:57,188 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:57,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1189305059, now seen corresponding path program 46 times [2018-09-30 10:43:57,188 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:57,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:57,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:57,189 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:57,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:57,524 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:57,524 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 [2018-09-30 10:43:57,531 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:43:57,568 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:43:57,568 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:57,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:57,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:57,692 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:57,692 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-09-30 10:43:57,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-09-30 10:43:57,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-09-30 10:43:57,693 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:57,693 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-09-30 10:43:58,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:58,014 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-09-30 10:43:58,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-30 10:43:58,014 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-09-30 10:43:58,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:58,015 INFO L225 Difference]: With dead ends: 53 [2018-09-30 10:43:58,015 INFO L226 Difference]: Without dead ends: 51 [2018-09-30 10:43:58,015 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:58,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-30 10:43:58,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-30 10:43:58,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-30 10:43:58,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-09-30 10:43:58,017 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-09-30 10:43:58,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:58,017 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-09-30 10:43:58,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-09-30 10:43:58,017 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-09-30 10:43:58,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-30 10:43:58,018 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:58,018 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-09-30 10:43:58,018 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:58,018 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:58,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1786247028, now seen corresponding path program 47 times [2018-09-30 10:43:58,018 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:58,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:58,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:58,019 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:58,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:58,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:58,459 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:58,459 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 [2018-09-30 10:43:58,468 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:43:58,516 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-09-30 10:43:58,516 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:58,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:58,638 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:58,638 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-09-30 10:43:58,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-09-30 10:43:58,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-09-30 10:43:58,639 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:58,639 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-09-30 10:43:59,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:59,012 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-09-30 10:43:59,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-30 10:43:59,012 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-09-30 10:43:59,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:59,013 INFO L225 Difference]: With dead ends: 54 [2018-09-30 10:43:59,013 INFO L226 Difference]: Without dead ends: 52 [2018-09-30 10:43:59,013 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:59,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-30 10:43:59,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-09-30 10:43:59,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-09-30 10:43:59,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-09-30 10:43:59,015 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-09-30 10:43:59,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:59,015 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-09-30 10:43:59,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-09-30 10:43:59,016 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-09-30 10:43:59,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-30 10:43:59,016 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:59,016 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-09-30 10:43:59,016 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:59,017 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:59,017 INFO L82 PathProgramCache]: Analyzing trace with hash 460918787, now seen corresponding path program 48 times [2018-09-30 10:43:59,017 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:59,017 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:59,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:59,018 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:59,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:59,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:59,430 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:59,430 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 [2018-09-30 10:43:59,437 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:43:59,484 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-09-30 10:43:59,484 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:59,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:59,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:59,615 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:59,615 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-09-30 10:43:59,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-09-30 10:43:59,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-09-30 10:43:59,616 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:59,616 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-09-30 10:43:59,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:59,872 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-09-30 10:43:59,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-30 10:43:59,873 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-09-30 10:43:59,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:59,873 INFO L225 Difference]: With dead ends: 55 [2018-09-30 10:43:59,873 INFO L226 Difference]: Without dead ends: 53 [2018-09-30 10:43:59,873 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:59,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-09-30 10:43:59,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-09-30 10:43:59,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-09-30 10:43:59,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-09-30 10:43:59,876 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-09-30 10:43:59,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:59,877 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-09-30 10:43:59,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-09-30 10:43:59,877 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-09-30 10:43:59,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-30 10:43:59,877 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:59,877 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-09-30 10:43:59,878 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:59,878 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:59,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1403582316, now seen corresponding path program 49 times [2018-09-30 10:43:59,878 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:59,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:59,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:59,879 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:59,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:00,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:00,214 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:00,214 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 10:44:00,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:00,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:00,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:00,379 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:00,379 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-09-30 10:44:00,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-30 10:44:00,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-30 10:44:00,380 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:00,380 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-09-30 10:44:00,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:00,652 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-09-30 10:44:00,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-30 10:44:00,652 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-09-30 10:44:00,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:00,653 INFO L225 Difference]: With dead ends: 56 [2018-09-30 10:44:00,653 INFO L226 Difference]: Without dead ends: 54 [2018-09-30 10:44:00,653 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:00,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-30 10:44:00,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-09-30 10:44:00,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-30 10:44:00,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-09-30 10:44:00,655 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-09-30 10:44:00,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:00,655 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-09-30 10:44:00,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-30 10:44:00,655 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-09-30 10:44:00,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-30 10:44:00,655 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:00,655 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-09-30 10:44:00,656 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:00,656 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:00,656 INFO L82 PathProgramCache]: Analyzing trace with hash 561380643, now seen corresponding path program 50 times [2018-09-30 10:44:00,656 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:00,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:00,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:00,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:00,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:00,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:00,961 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:00,961 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 [2018-09-30 10:44:00,969 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:44:01,010 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:44:01,011 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:01,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:01,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:01,160 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:01,160 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-09-30 10:44:01,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-09-30 10:44:01,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-09-30 10:44:01,161 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:01,161 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-09-30 10:44:01,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:01,516 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-09-30 10:44:01,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-30 10:44:01,517 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-09-30 10:44:01,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:01,518 INFO L225 Difference]: With dead ends: 57 [2018-09-30 10:44:01,518 INFO L226 Difference]: Without dead ends: 55 [2018-09-30 10:44:01,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:01,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-09-30 10:44:01,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-09-30 10:44:01,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-09-30 10:44:01,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-09-30 10:44:01,520 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-09-30 10:44:01,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:01,520 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-09-30 10:44:01,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-09-30 10:44:01,521 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-09-30 10:44:01,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-30 10:44:01,521 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:01,521 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-09-30 10:44:01,521 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:01,521 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:01,522 INFO L82 PathProgramCache]: Analyzing trace with hash 222932556, now seen corresponding path program 51 times [2018-09-30 10:44:01,522 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:01,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:01,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:01,523 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:01,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:01,915 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:01,915 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 [2018-09-30 10:44:01,922 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:44:01,969 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-09-30 10:44:01,969 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:01,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:02,165 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:02,166 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-09-30 10:44:02,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-09-30 10:44:02,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-09-30 10:44:02,167 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:02,167 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-09-30 10:44:02,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:02,606 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-09-30 10:44:02,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-30 10:44:02,607 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-09-30 10:44:02,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:02,607 INFO L225 Difference]: With dead ends: 58 [2018-09-30 10:44:02,607 INFO L226 Difference]: Without dead ends: 56 [2018-09-30 10:44:02,608 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:02,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-30 10:44:02,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-30 10:44:02,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-30 10:44:02,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-09-30 10:44:02,609 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-09-30 10:44:02,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:02,610 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-09-30 10:44:02,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-09-30 10:44:02,610 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-09-30 10:44:02,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-09-30 10:44:02,610 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:02,610 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-09-30 10:44:02,611 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:02,611 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:02,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1679023549, now seen corresponding path program 52 times [2018-09-30 10:44:02,611 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:02,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:02,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:02,612 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:02,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:02,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:02,879 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:02,879 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 [2018-09-30 10:44:02,886 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:44:02,930 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:44:02,930 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:02,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:03,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:03,061 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:03,061 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-09-30 10:44:03,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-09-30 10:44:03,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-09-30 10:44:03,062 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:03,062 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-09-30 10:44:03,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:03,418 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-09-30 10:44:03,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-30 10:44:03,419 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-09-30 10:44:03,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:03,419 INFO L225 Difference]: With dead ends: 59 [2018-09-30 10:44:03,419 INFO L226 Difference]: Without dead ends: 57 [2018-09-30 10:44:03,420 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:03,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-30 10:44:03,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-30 10:44:03,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-30 10:44:03,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-09-30 10:44:03,422 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-09-30 10:44:03,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:03,422 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-09-30 10:44:03,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-09-30 10:44:03,423 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-09-30 10:44:03,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-30 10:44:03,423 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:03,423 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-09-30 10:44:03,424 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:03,424 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:03,424 INFO L82 PathProgramCache]: Analyzing trace with hash -510120660, now seen corresponding path program 53 times [2018-09-30 10:44:03,424 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:03,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:03,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:03,425 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:03,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:04,393 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:04,393 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 [2018-09-30 10:44:04,401 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:44:04,460 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-09-30 10:44:04,460 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:04,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:04,644 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:04,644 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-09-30 10:44:04,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-30 10:44:04,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-30 10:44:04,645 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:04,645 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-09-30 10:44:05,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:05,004 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-09-30 10:44:05,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-30 10:44:05,005 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-09-30 10:44:05,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:05,005 INFO L225 Difference]: With dead ends: 60 [2018-09-30 10:44:05,005 INFO L226 Difference]: Without dead ends: 58 [2018-09-30 10:44:05,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:05,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-30 10:44:05,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-09-30 10:44:05,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-09-30 10:44:05,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-09-30 10:44:05,007 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-09-30 10:44:05,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:05,007 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-09-30 10:44:05,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-30 10:44:05,008 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-09-30 10:44:05,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-09-30 10:44:05,008 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:05,008 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-09-30 10:44:05,008 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:05,008 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:05,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1366130531, now seen corresponding path program 54 times [2018-09-30 10:44:05,008 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:05,009 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:05,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:05,009 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:05,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:05,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:05,403 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:05,403 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 [2018-09-30 10:44:05,411 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:44:05,462 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-09-30 10:44:05,463 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:05,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:05,686 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:05,686 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-09-30 10:44:05,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-09-30 10:44:05,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-09-30 10:44:05,687 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:05,687 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-09-30 10:44:06,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:06,027 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-09-30 10:44:06,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-30 10:44:06,027 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-09-30 10:44:06,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:06,028 INFO L225 Difference]: With dead ends: 61 [2018-09-30 10:44:06,028 INFO L226 Difference]: Without dead ends: 59 [2018-09-30 10:44:06,028 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:06,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-09-30 10:44:06,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-09-30 10:44:06,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-30 10:44:06,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-09-30 10:44:06,030 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-09-30 10:44:06,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:06,030 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-09-30 10:44:06,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-09-30 10:44:06,030 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-09-30 10:44:06,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-30 10:44:06,031 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:06,031 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-09-30 10:44:06,031 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:06,031 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:06,031 INFO L82 PathProgramCache]: Analyzing trace with hash -599624692, now seen corresponding path program 55 times [2018-09-30 10:44:06,031 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:06,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:06,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:06,032 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:06,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:06,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:06,358 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:06,359 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 10:44:06,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:06,413 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:06,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:06,528 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:06,529 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-09-30 10:44:06,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-09-30 10:44:06,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-09-30 10:44:06,530 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:06,530 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-09-30 10:44:06,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:06,966 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-09-30 10:44:06,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-30 10:44:06,966 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-09-30 10:44:06,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:06,967 INFO L225 Difference]: With dead ends: 62 [2018-09-30 10:44:06,967 INFO L226 Difference]: Without dead ends: 60 [2018-09-30 10:44:06,967 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:06,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-09-30 10:44:06,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-09-30 10:44:06,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-30 10:44:06,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-09-30 10:44:06,969 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-09-30 10:44:06,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:06,969 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-09-30 10:44:06,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-09-30 10:44:06,969 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-09-30 10:44:06,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-30 10:44:06,970 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:06,970 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-09-30 10:44:06,970 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:06,970 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:06,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1408494461, now seen corresponding path program 56 times [2018-09-30 10:44:06,970 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:06,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:06,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:06,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:06,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:07,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:07,246 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:07,246 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 10:44:07,253 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:44:07,298 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:44:07,298 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:07,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:07,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:07,440 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:07,441 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-09-30 10:44:07,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-09-30 10:44:07,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-09-30 10:44:07,441 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:07,442 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-09-30 10:44:07,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:07,806 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-09-30 10:44:07,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-30 10:44:07,807 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-09-30 10:44:07,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:07,807 INFO L225 Difference]: With dead ends: 63 [2018-09-30 10:44:07,807 INFO L226 Difference]: Without dead ends: 61 [2018-09-30 10:44:07,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:07,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-09-30 10:44:07,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-09-30 10:44:07,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-09-30 10:44:07,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-09-30 10:44:07,810 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-09-30 10:44:07,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:07,810 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-09-30 10:44:07,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-09-30 10:44:07,810 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-09-30 10:44:07,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-30 10:44:07,811 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:07,811 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-09-30 10:44:07,811 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:07,811 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:07,811 INFO L82 PathProgramCache]: Analyzing trace with hash -713653524, now seen corresponding path program 57 times [2018-09-30 10:44:07,812 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:07,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:07,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:07,812 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:07,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:08,095 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:08,095 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 10:44:08,102 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:44:08,169 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-09-30 10:44:08,169 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:08,171 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:08,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:08,298 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:08,298 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-09-30 10:44:08,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-30 10:44:08,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-30 10:44:08,299 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:08,299 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-09-30 10:44:08,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:08,704 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-09-30 10:44:08,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-30 10:44:08,704 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-09-30 10:44:08,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:08,705 INFO L225 Difference]: With dead ends: 64 [2018-09-30 10:44:08,705 INFO L226 Difference]: Without dead ends: 62 [2018-09-30 10:44:08,705 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:08,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-09-30 10:44:08,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-09-30 10:44:08,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-09-30 10:44:08,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-09-30 10:44:08,707 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-09-30 10:44:08,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:08,707 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-09-30 10:44:08,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-30 10:44:08,708 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-09-30 10:44:08,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-09-30 10:44:08,708 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:08,708 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-09-30 10:44:08,708 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:08,708 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:08,709 INFO L82 PathProgramCache]: Analyzing trace with hash -648420957, now seen corresponding path program 58 times [2018-09-30 10:44:08,709 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:08,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:08,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:08,710 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:08,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:09,542 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:09,542 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 [2018-09-30 10:44:09,552 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:44:09,602 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:44:09,603 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:09,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:09,738 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:09,738 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-09-30 10:44:09,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-09-30 10:44:09,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-09-30 10:44:09,739 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:09,739 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-09-30 10:44:10,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:10,165 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-09-30 10:44:10,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-30 10:44:10,165 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-09-30 10:44:10,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:10,166 INFO L225 Difference]: With dead ends: 65 [2018-09-30 10:44:10,166 INFO L226 Difference]: Without dead ends: 63 [2018-09-30 10:44:10,166 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:10,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-30 10:44:10,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-30 10:44:10,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-30 10:44:10,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-09-30 10:44:10,168 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-09-30 10:44:10,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:10,169 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-09-30 10:44:10,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-09-30 10:44:10,169 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-09-30 10:44:10,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-30 10:44:10,169 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:10,169 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-09-30 10:44:10,169 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:10,169 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:10,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1373788620, now seen corresponding path program 59 times [2018-09-30 10:44:10,170 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:10,170 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:10,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:10,170 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:10,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:13,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:13,257 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:13,257 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 [2018-09-30 10:44:13,267 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:44:13,333 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-09-30 10:44:13,333 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:13,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:13,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:13,541 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:13,541 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-09-30 10:44:13,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-09-30 10:44:13,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-09-30 10:44:13,542 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:13,543 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-09-30 10:44:13,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:13,988 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-09-30 10:44:13,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-09-30 10:44:13,989 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-09-30 10:44:13,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:13,989 INFO L225 Difference]: With dead ends: 66 [2018-09-30 10:44:13,989 INFO L226 Difference]: Without dead ends: 64 [2018-09-30 10:44:13,989 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:13,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-09-30 10:44:13,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-09-30 10:44:13,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-30 10:44:13,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-09-30 10:44:13,991 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-09-30 10:44:13,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:13,991 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-09-30 10:44:13,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-09-30 10:44:13,991 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-09-30 10:44:13,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-09-30 10:44:13,992 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:13,992 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-09-30 10:44:13,992 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:13,992 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:13,992 INFO L82 PathProgramCache]: Analyzing trace with hash -362223933, now seen corresponding path program 60 times [2018-09-30 10:44:13,992 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:13,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:13,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:13,993 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:13,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:14,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:14,716 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:14,716 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 [2018-09-30 10:44:14,723 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:44:14,784 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-09-30 10:44:14,784 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:14,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:14,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:14,956 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:14,957 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-09-30 10:44:14,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-09-30 10:44:14,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-09-30 10:44:14,958 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:14,958 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-09-30 10:44:15,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:15,324 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-09-30 10:44:15,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-30 10:44:15,324 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-09-30 10:44:15,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:15,325 INFO L225 Difference]: With dead ends: 67 [2018-09-30 10:44:15,325 INFO L226 Difference]: Without dead ends: 65 [2018-09-30 10:44:15,325 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:15,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-09-30 10:44:15,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-09-30 10:44:15,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-30 10:44:15,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-09-30 10:44:15,327 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-09-30 10:44:15,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:15,327 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-09-30 10:44:15,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-09-30 10:44:15,327 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-09-30 10:44:15,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-30 10:44:15,328 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:15,328 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-09-30 10:44:15,328 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:15,328 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:15,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1655961772, now seen corresponding path program 61 times [2018-09-30 10:44:15,328 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:15,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:15,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:15,329 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:15,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:15,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:15,867 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:15,867 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 [2018-09-30 10:44:15,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:15,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:16,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:16,057 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:16,058 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-09-30 10:44:16,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-30 10:44:16,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-30 10:44:16,059 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:16,059 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-09-30 10:44:16,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:16,419 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-09-30 10:44:16,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-09-30 10:44:16,419 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-09-30 10:44:16,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:16,420 INFO L225 Difference]: With dead ends: 68 [2018-09-30 10:44:16,420 INFO L226 Difference]: Without dead ends: 66 [2018-09-30 10:44:16,420 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:16,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-09-30 10:44:16,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-09-30 10:44:16,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-09-30 10:44:16,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-09-30 10:44:16,422 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-09-30 10:44:16,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:16,422 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-09-30 10:44:16,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-30 10:44:16,422 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-09-30 10:44:16,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-09-30 10:44:16,422 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:16,422 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-09-30 10:44:16,423 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:16,423 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:16,423 INFO L82 PathProgramCache]: Analyzing trace with hash -204790813, now seen corresponding path program 62 times [2018-09-30 10:44:16,423 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:16,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:16,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:16,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:16,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:18,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:18,247 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:18,247 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 [2018-09-30 10:44:18,255 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:44:18,301 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:44:18,302 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:18,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:18,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:18,458 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:18,458 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-09-30 10:44:18,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-09-30 10:44:18,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-09-30 10:44:18,459 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:18,459 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-09-30 10:44:18,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:18,936 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-09-30 10:44:18,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-30 10:44:18,936 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-09-30 10:44:18,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:18,937 INFO L225 Difference]: With dead ends: 69 [2018-09-30 10:44:18,937 INFO L226 Difference]: Without dead ends: 67 [2018-09-30 10:44:18,937 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:18,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-30 10:44:18,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-09-30 10:44:18,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-30 10:44:18,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-09-30 10:44:18,939 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-09-30 10:44:18,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:18,940 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-09-30 10:44:18,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-09-30 10:44:18,940 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-09-30 10:44:18,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-09-30 10:44:18,940 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:18,940 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-09-30 10:44:18,940 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:18,940 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:18,941 INFO L82 PathProgramCache]: Analyzing trace with hash -2053546100, now seen corresponding path program 63 times [2018-09-30 10:44:18,941 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:18,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:18,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:18,942 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:18,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:20,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:20,072 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:20,072 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 [2018-09-30 10:44:20,083 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:44:20,147 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-09-30 10:44:20,148 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:20,150 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:20,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:20,314 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:20,314 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-09-30 10:44:20,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-09-30 10:44:20,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-09-30 10:44:20,315 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:20,315 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-09-30 10:44:20,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:20,820 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-09-30 10:44:20,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-09-30 10:44:20,821 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-09-30 10:44:20,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:20,821 INFO L225 Difference]: With dead ends: 70 [2018-09-30 10:44:20,821 INFO L226 Difference]: Without dead ends: 68 [2018-09-30 10:44:20,821 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:20,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-30 10:44:20,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-09-30 10:44:20,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-09-30 10:44:20,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-09-30 10:44:20,823 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-09-30 10:44:20,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:20,824 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-09-30 10:44:20,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-09-30 10:44:20,824 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-09-30 10:44:20,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-09-30 10:44:20,824 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:20,824 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-09-30 10:44:20,825 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:20,825 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:20,825 INFO L82 PathProgramCache]: Analyzing trace with hash 764582147, now seen corresponding path program 64 times [2018-09-30 10:44:20,825 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:20,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:20,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:20,826 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:20,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:21,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:21,169 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:21,169 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 [2018-09-30 10:44:21,185 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:44:21,248 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:44:21,248 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:21,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:21,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:21,399 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:21,399 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-09-30 10:44:21,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-09-30 10:44:21,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-09-30 10:44:21,400 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:21,400 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-09-30 10:44:21,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:21,872 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-09-30 10:44:21,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-30 10:44:21,872 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-09-30 10:44:21,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:21,872 INFO L225 Difference]: With dead ends: 71 [2018-09-30 10:44:21,873 INFO L226 Difference]: Without dead ends: 69 [2018-09-30 10:44:21,873 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:21,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-09-30 10:44:21,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-09-30 10:44:21,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-09-30 10:44:21,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-09-30 10:44:21,875 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-09-30 10:44:21,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:21,875 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-09-30 10:44:21,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-09-30 10:44:21,876 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-09-30 10:44:21,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-30 10:44:21,876 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:21,876 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-09-30 10:44:21,876 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:21,876 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:21,876 INFO L82 PathProgramCache]: Analyzing trace with hash -2067755412, now seen corresponding path program 65 times [2018-09-30 10:44:21,876 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:21,877 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:21,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:21,877 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:21,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:22,190 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:22,191 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 10:44:22,199 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:44:22,264 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-09-30 10:44:22,264 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:22,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:22,515 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:22,516 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-09-30 10:44:22,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-30 10:44:22,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-30 10:44:22,517 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:22,517 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-09-30 10:44:22,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:22,992 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-09-30 10:44:22,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-09-30 10:44:22,993 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-09-30 10:44:22,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:22,993 INFO L225 Difference]: With dead ends: 72 [2018-09-30 10:44:22,993 INFO L226 Difference]: Without dead ends: 70 [2018-09-30 10:44:22,993 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:22,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-09-30 10:44:22,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-09-30 10:44:22,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-09-30 10:44:22,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-09-30 10:44:22,996 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-09-30 10:44:22,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:22,996 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-09-30 10:44:22,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-30 10:44:22,996 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-09-30 10:44:22,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-09-30 10:44:22,997 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:22,997 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-09-30 10:44:22,997 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:22,997 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:22,997 INFO L82 PathProgramCache]: Analyzing trace with hash 324093475, now seen corresponding path program 66 times [2018-09-30 10:44:22,997 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:22,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:22,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:22,998 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:22,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:23,324 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:23,324 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 [2018-09-30 10:44:23,330 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:44:23,396 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-09-30 10:44:23,396 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:23,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:23,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:23,655 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:23,655 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-09-30 10:44:23,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-09-30 10:44:23,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-09-30 10:44:23,656 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:23,656 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-09-30 10:44:23,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:24,000 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-09-30 10:44:24,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-30 10:44:24,000 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-09-30 10:44:24,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:24,000 INFO L225 Difference]: With dead ends: 73 [2018-09-30 10:44:24,001 INFO L226 Difference]: Without dead ends: 71 [2018-09-30 10:44:24,001 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:24,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-09-30 10:44:24,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-09-30 10:44:24,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-09-30 10:44:24,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-09-30 10:44:24,003 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-09-30 10:44:24,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:24,003 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-09-30 10:44:24,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-09-30 10:44:24,003 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-09-30 10:44:24,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-30 10:44:24,003 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:24,004 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-09-30 10:44:24,004 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:24,004 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:24,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1456964940, now seen corresponding path program 67 times [2018-09-30 10:44:24,004 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:24,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:24,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:24,005 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:24,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:24,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:24,337 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:24,337 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 [2018-09-30 10:44:24,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:24,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:24,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:24,659 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:24,659 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-09-30 10:44:24,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-09-30 10:44:24,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-09-30 10:44:24,660 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:24,660 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-09-30 10:44:25,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:25,279 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-09-30 10:44:25,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-09-30 10:44:25,279 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-09-30 10:44:25,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:25,280 INFO L225 Difference]: With dead ends: 74 [2018-09-30 10:44:25,280 INFO L226 Difference]: Without dead ends: 72 [2018-09-30 10:44:25,280 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:25,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-09-30 10:44:25,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-09-30 10:44:25,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-09-30 10:44:25,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-09-30 10:44:25,283 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-09-30 10:44:25,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:25,283 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-09-30 10:44:25,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-09-30 10:44:25,283 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-09-30 10:44:25,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-09-30 10:44:25,283 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:25,284 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-09-30 10:44:25,284 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:25,284 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:25,284 INFO L82 PathProgramCache]: Analyzing trace with hash -2078725309, now seen corresponding path program 68 times [2018-09-30 10:44:25,284 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:25,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:25,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:25,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:25,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:25,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:25,664 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:25,664 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 [2018-09-30 10:44:25,672 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:44:25,732 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:44:25,733 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:25,736 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:25,979 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:25,980 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-09-30 10:44:25,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-09-30 10:44:25,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-09-30 10:44:25,980 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:25,981 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-09-30 10:44:26,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:26,367 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-09-30 10:44:26,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-30 10:44:26,368 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-09-30 10:44:26,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:26,368 INFO L225 Difference]: With dead ends: 75 [2018-09-30 10:44:26,368 INFO L226 Difference]: Without dead ends: 73 [2018-09-30 10:44:26,368 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:26,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-09-30 10:44:26,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-09-30 10:44:26,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-09-30 10:44:26,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-09-30 10:44:26,370 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-09-30 10:44:26,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:26,371 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-09-30 10:44:26,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-09-30 10:44:26,371 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-09-30 10:44:26,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-30 10:44:26,371 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:26,371 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-09-30 10:44:26,371 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:26,373 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:26,373 INFO L82 PathProgramCache]: Analyzing trace with hash -15973332, now seen corresponding path program 69 times [2018-09-30 10:44:26,373 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:26,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:26,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:26,374 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:26,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:26,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:26,759 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:26,759 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 [2018-09-30 10:44:26,766 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:44:26,853 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-09-30 10:44:26,853 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:26,856 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:28,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:28,602 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:28,602 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-09-30 10:44:28,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-30 10:44:28,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-30 10:44:28,603 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:28,603 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-09-30 10:44:29,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:29,194 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-09-30 10:44:29,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-09-30 10:44:29,195 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-09-30 10:44:29,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:29,195 INFO L225 Difference]: With dead ends: 76 [2018-09-30 10:44:29,195 INFO L226 Difference]: Without dead ends: 74 [2018-09-30 10:44:29,196 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:29,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-09-30 10:44:29,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-09-30 10:44:29,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-09-30 10:44:29,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-09-30 10:44:29,198 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-09-30 10:44:29,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:29,199 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-09-30 10:44:29,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-30 10:44:29,199 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-09-30 10:44:29,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-09-30 10:44:29,199 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:29,199 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-09-30 10:44:29,200 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:29,200 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:29,200 INFO L82 PathProgramCache]: Analyzing trace with hash -495171485, now seen corresponding path program 70 times [2018-09-30 10:44:29,200 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:29,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:29,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:29,201 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:29,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:29,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:29,556 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:29,557 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 [2018-09-30 10:44:29,565 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:44:29,631 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:44:29,631 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:29,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:29,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:29,946 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:29,946 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-09-30 10:44:29,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-09-30 10:44:29,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-09-30 10:44:29,947 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:29,948 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-09-30 10:44:30,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:30,440 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-09-30 10:44:30,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-09-30 10:44:30,441 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-09-30 10:44:30,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:30,441 INFO L225 Difference]: With dead ends: 77 [2018-09-30 10:44:30,441 INFO L226 Difference]: Without dead ends: 75 [2018-09-30 10:44:30,442 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:30,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-09-30 10:44:30,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-09-30 10:44:30,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-09-30 10:44:30,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-09-30 10:44:30,444 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-09-30 10:44:30,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:30,445 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-09-30 10:44:30,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-09-30 10:44:30,445 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-09-30 10:44:30,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-09-30 10:44:30,446 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:30,446 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-09-30 10:44:30,446 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:30,446 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:30,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1829554956, now seen corresponding path program 71 times [2018-09-30 10:44:30,447 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:30,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:30,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:30,447 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:30,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:30,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:30,816 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:30,816 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 [2018-09-30 10:44:30,823 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:44:30,910 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-09-30 10:44:30,911 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:30,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:31,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:31,353 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:31,353 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-09-30 10:44:31,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-09-30 10:44:31,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-09-30 10:44:31,354 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:31,354 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-09-30 10:44:31,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:31,909 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-09-30 10:44:31,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-09-30 10:44:31,909 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-09-30 10:44:31,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:31,910 INFO L225 Difference]: With dead ends: 78 [2018-09-30 10:44:31,910 INFO L226 Difference]: Without dead ends: 76 [2018-09-30 10:44:31,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:31,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-09-30 10:44:31,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-09-30 10:44:31,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-09-30 10:44:31,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-09-30 10:44:31,913 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-09-30 10:44:31,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:31,913 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-09-30 10:44:31,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-09-30 10:44:31,913 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-09-30 10:44:31,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-09-30 10:44:31,914 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:31,914 INFO L375 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-09-30 10:44:31,914 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:31,914 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:31,914 INFO L82 PathProgramCache]: Analyzing trace with hash 881630595, now seen corresponding path program 72 times [2018-09-30 10:44:31,914 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:31,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:31,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:31,915 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:31,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:32,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:32,311 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:32,311 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 [2018-09-30 10:44:32,318 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:44:32,386 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-09-30 10:44:32,387 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:32,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:32,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:32,568 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:32,569 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-09-30 10:44:32,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-09-30 10:44:32,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-09-30 10:44:32,570 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:32,570 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-09-30 10:44:33,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:33,147 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-09-30 10:44:33,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-09-30 10:44:33,147 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-09-30 10:44:33,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:33,148 INFO L225 Difference]: With dead ends: 79 [2018-09-30 10:44:33,148 INFO L226 Difference]: Without dead ends: 77 [2018-09-30 10:44:33,148 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:33,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-09-30 10:44:33,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-09-30 10:44:33,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-09-30 10:44:33,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-09-30 10:44:33,150 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-09-30 10:44:33,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:33,151 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-09-30 10:44:33,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-09-30 10:44:33,151 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-09-30 10:44:33,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-09-30 10:44:33,151 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:33,151 INFO L375 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-09-30 10:44:33,152 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:33,152 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:33,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1560746476, now seen corresponding path program 73 times [2018-09-30 10:44:33,152 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:33,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:33,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:33,153 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:33,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:33,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:33,909 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:33,909 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 [2018-09-30 10:44:33,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:33,975 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:34,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:34,141 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:34,141 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-09-30 10:44:34,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-09-30 10:44:34,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-09-30 10:44:34,142 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:34,142 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-09-30 10:44:34,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:34,770 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-09-30 10:44:34,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-09-30 10:44:34,770 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-09-30 10:44:34,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:34,771 INFO L225 Difference]: With dead ends: 80 [2018-09-30 10:44:34,771 INFO L226 Difference]: Without dead ends: 78 [2018-09-30 10:44:34,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:34,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-09-30 10:44:34,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-09-30 10:44:34,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-09-30 10:44:34,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-09-30 10:44:34,773 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-09-30 10:44:34,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:34,773 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-09-30 10:44:34,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-09-30 10:44:34,773 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-09-30 10:44:34,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-09-30 10:44:34,774 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:34,774 INFO L375 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-09-30 10:44:34,774 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:34,774 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:34,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1138502307, now seen corresponding path program 74 times [2018-09-30 10:44:34,774 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:34,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:34,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:34,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:34,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:35,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:35,287 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:35,288 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 [2018-09-30 10:44:35,294 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:44:35,350 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:44:35,351 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:35,353 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:35,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:35,507 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:35,507 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-09-30 10:44:35,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-09-30 10:44:35,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-09-30 10:44:35,509 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:35,509 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. [2018-09-30 10:44:36,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:36,148 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-09-30 10:44:36,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-09-30 10:44:36,149 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 77 [2018-09-30 10:44:36,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:36,149 INFO L225 Difference]: With dead ends: 81 [2018-09-30 10:44:36,149 INFO L226 Difference]: Without dead ends: 79 [2018-09-30 10:44:36,149 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:36,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-09-30 10:44:36,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-09-30 10:44:36,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-30 10:44:36,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-09-30 10:44:36,151 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-09-30 10:44:36,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:36,152 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-09-30 10:44:36,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-09-30 10:44:36,152 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-09-30 10:44:36,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-09-30 10:44:36,152 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:36,153 INFO L375 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-09-30 10:44:36,153 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:36,153 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:36,153 INFO L82 PathProgramCache]: Analyzing trace with hash 933834956, now seen corresponding path program 75 times [2018-09-30 10:44:36,153 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:36,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:36,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:36,154 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:36,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:36,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:36,570 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:36,570 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 [2018-09-30 10:44:36,576 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:44:36,661 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-09-30 10:44:36,661 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:36,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:37,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:37,275 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:37,276 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-09-30 10:44:37,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-09-30 10:44:37,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-09-30 10:44:37,277 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:37,277 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 78 states. [2018-09-30 10:44:38,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:38,333 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-09-30 10:44:38,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-09-30 10:44:38,333 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2018-09-30 10:44:38,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:38,334 INFO L225 Difference]: With dead ends: 82 [2018-09-30 10:44:38,334 INFO L226 Difference]: Without dead ends: 80 [2018-09-30 10:44:38,334 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:38,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-09-30 10:44:38,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-09-30 10:44:38,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-09-30 10:44:38,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-09-30 10:44:38,337 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-09-30 10:44:38,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:38,337 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-09-30 10:44:38,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-09-30 10:44:38,337 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-09-30 10:44:38,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-09-30 10:44:38,337 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:38,338 INFO L375 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-09-30 10:44:38,338 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:38,338 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:38,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1115885629, now seen corresponding path program 76 times [2018-09-30 10:44:38,338 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:38,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:38,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:38,339 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:38,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:38,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:38,741 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:38,741 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 [2018-09-30 10:44:38,748 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:44:38,806 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:44:38,807 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:38,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:38,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:38,970 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:38,971 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-09-30 10:44:38,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-09-30 10:44:38,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-09-30 10:44:38,972 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:38,972 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 79 states. [2018-09-30 10:44:40,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:40,186 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-09-30 10:44:40,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-09-30 10:44:40,187 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 79 [2018-09-30 10:44:40,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:40,187 INFO L225 Difference]: With dead ends: 83 [2018-09-30 10:44:40,187 INFO L226 Difference]: Without dead ends: 81 [2018-09-30 10:44:40,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:40,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-09-30 10:44:40,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-09-30 10:44:40,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-09-30 10:44:40,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-09-30 10:44:40,190 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-09-30 10:44:40,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:40,190 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-09-30 10:44:40,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-09-30 10:44:40,190 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-09-30 10:44:40,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-09-30 10:44:40,190 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:40,191 INFO L375 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-09-30 10:44:40,191 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:40,191 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:40,191 INFO L82 PathProgramCache]: Analyzing trace with hash -232714324, now seen corresponding path program 77 times [2018-09-30 10:44:40,191 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:40,191 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:40,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:40,192 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:40,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:40,620 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:40,620 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 [2018-09-30 10:44:40,627 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:44:40,710 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-09-30 10:44:40,710 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:40,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:40,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:40,879 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:40,880 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-09-30 10:44:40,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-09-30 10:44:40,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-09-30 10:44:40,881 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:40,881 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 80 states. [2018-09-30 10:44:41,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:41,521 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-09-30 10:44:41,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-09-30 10:44:41,522 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 80 [2018-09-30 10:44:41,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:41,522 INFO L225 Difference]: With dead ends: 84 [2018-09-30 10:44:41,522 INFO L226 Difference]: Without dead ends: 82 [2018-09-30 10:44:41,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:41,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-09-30 10:44:41,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-09-30 10:44:41,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-09-30 10:44:41,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-09-30 10:44:41,524 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-09-30 10:44:41,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:41,525 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-09-30 10:44:41,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-09-30 10:44:41,525 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-09-30 10:44:41,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-09-30 10:44:41,525 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:41,525 INFO L375 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-09-30 10:44:41,526 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:41,526 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:41,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1375792355, now seen corresponding path program 78 times [2018-09-30 10:44:41,526 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:41,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:41,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:41,527 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:41,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:41,931 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:41,931 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 [2018-09-30 10:44:41,939 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:44:42,189 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2018-09-30 10:44:42,189 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:42,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:42,435 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:42,435 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-09-30 10:44:42,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-09-30 10:44:42,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-09-30 10:44:42,436 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:42,436 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 81 states. [2018-09-30 10:44:42,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:42,894 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-09-30 10:44:42,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-09-30 10:44:42,894 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 81 [2018-09-30 10:44:42,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:42,894 INFO L225 Difference]: With dead ends: 85 [2018-09-30 10:44:42,895 INFO L226 Difference]: Without dead ends: 83 [2018-09-30 10:44:42,895 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:42,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-30 10:44:42,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-09-30 10:44:42,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-09-30 10:44:42,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-09-30 10:44:42,897 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-09-30 10:44:42,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:42,897 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-09-30 10:44:42,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-09-30 10:44:42,898 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-09-30 10:44:42,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-09-30 10:44:42,898 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:42,898 INFO L375 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-09-30 10:44:42,898 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:42,899 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:42,899 INFO L82 PathProgramCache]: Analyzing trace with hash -300108148, now seen corresponding path program 79 times [2018-09-30 10:44:42,899 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:42,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:42,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:42,900 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:42,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:43,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:43,387 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:43,387 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 10:44:43,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:43,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:43,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:43,630 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:43,630 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-09-30 10:44:43,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-09-30 10:44:43,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-09-30 10:44:43,631 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:43,631 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 82 states. [2018-09-30 10:44:44,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:44,260 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-09-30 10:44:44,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-09-30 10:44:44,260 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82 [2018-09-30 10:44:44,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:44,261 INFO L225 Difference]: With dead ends: 86 [2018-09-30 10:44:44,261 INFO L226 Difference]: Without dead ends: 84 [2018-09-30 10:44:44,261 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:44,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-09-30 10:44:44,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-09-30 10:44:44,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-09-30 10:44:44,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-09-30 10:44:44,264 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-09-30 10:44:44,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:44,264 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-09-30 10:44:44,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-09-30 10:44:44,264 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-09-30 10:44:44,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-09-30 10:44:44,265 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:44,265 INFO L375 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-09-30 10:44:44,265 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:44,265 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:44,265 INFO L82 PathProgramCache]: Analyzing trace with hash -713416189, now seen corresponding path program 80 times [2018-09-30 10:44:44,265 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:44,265 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:44,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:44,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:44,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:44,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:44,709 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:44,709 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 [2018-09-30 10:44:44,716 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:44:44,778 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:44:44,778 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:44,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:44,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:44,969 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:44,969 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-09-30 10:44:44,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-09-30 10:44:44,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-09-30 10:44:44,971 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:44,971 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 83 states. [2018-09-30 10:44:45,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:45,828 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-09-30 10:44:45,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-09-30 10:44:45,828 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 83 [2018-09-30 10:44:45,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:45,828 INFO L225 Difference]: With dead ends: 87 [2018-09-30 10:44:45,829 INFO L226 Difference]: Without dead ends: 85 [2018-09-30 10:44:45,829 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:45,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-09-30 10:44:45,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-09-30 10:44:45,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-09-30 10:44:45,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-09-30 10:44:45,831 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-09-30 10:44:45,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:45,831 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-09-30 10:44:45,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-09-30 10:44:45,831 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-09-30 10:44:45,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-09-30 10:44:45,832 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:45,832 INFO L375 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-09-30 10:44:45,832 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:45,832 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:45,832 INFO L82 PathProgramCache]: Analyzing trace with hash -641063572, now seen corresponding path program 81 times [2018-09-30 10:44:45,832 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:45,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:45,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:45,833 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:45,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:46,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:46,263 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:46,263 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 [2018-09-30 10:44:46,270 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:44:46,356 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-09-30 10:44:46,357 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:46,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:46,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:46,553 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:46,553 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-09-30 10:44:46,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-09-30 10:44:46,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-09-30 10:44:46,555 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:46,555 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 84 states. [2018-09-30 10:44:47,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:47,158 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-09-30 10:44:47,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-09-30 10:44:47,159 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 84 [2018-09-30 10:44:47,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:47,159 INFO L225 Difference]: With dead ends: 88 [2018-09-30 10:44:47,159 INFO L226 Difference]: Without dead ends: 86 [2018-09-30 10:44:47,159 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:47,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-09-30 10:44:47,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-09-30 10:44:47,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-09-30 10:44:47,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-09-30 10:44:47,162 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-09-30 10:44:47,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:47,162 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-09-30 10:44:47,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-09-30 10:44:47,162 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-09-30 10:44:47,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-09-30 10:44:47,162 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:47,162 INFO L375 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-09-30 10:44:47,162 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:47,163 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:47,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1601867555, now seen corresponding path program 82 times [2018-09-30 10:44:47,163 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:47,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:47,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:47,163 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:47,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:48,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:48,105 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:48,105 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 [2018-09-30 10:44:48,113 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:44:48,186 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:44:48,186 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:48,189 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:48,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:48,462 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:48,462 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-09-30 10:44:48,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-09-30 10:44:48,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-09-30 10:44:48,463 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:48,463 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 85 states. [2018-09-30 10:44:49,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:49,516 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-09-30 10:44:49,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-30 10:44:49,517 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 85 [2018-09-30 10:44:49,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:49,517 INFO L225 Difference]: With dead ends: 89 [2018-09-30 10:44:49,517 INFO L226 Difference]: Without dead ends: 87 [2018-09-30 10:44:49,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:49,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-09-30 10:44:49,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-09-30 10:44:49,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-09-30 10:44:49,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-09-30 10:44:49,520 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-09-30 10:44:49,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:49,520 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-09-30 10:44:49,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-09-30 10:44:49,520 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-09-30 10:44:49,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-09-30 10:44:49,521 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:49,521 INFO L375 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-09-30 10:44:49,521 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:49,521 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:49,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1881711540, now seen corresponding path program 83 times [2018-09-30 10:44:49,521 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:49,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:49,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:49,522 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:49,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:49,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:49,946 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:49,946 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 [2018-09-30 10:44:49,954 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:44:50,059 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-09-30 10:44:50,060 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:50,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:50,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:50,405 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:50,405 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-09-30 10:44:50,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-09-30 10:44:50,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-09-30 10:44:50,406 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:50,406 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 86 states. [2018-09-30 10:44:51,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:51,159 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-09-30 10:44:51,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-09-30 10:44:51,160 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86 [2018-09-30 10:44:51,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:51,160 INFO L225 Difference]: With dead ends: 90 [2018-09-30 10:44:51,160 INFO L226 Difference]: Without dead ends: 88 [2018-09-30 10:44:51,161 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:51,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-09-30 10:44:51,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-09-30 10:44:51,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-09-30 10:44:51,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-09-30 10:44:51,163 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-09-30 10:44:51,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:51,163 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-09-30 10:44:51,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-09-30 10:44:51,163 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-09-30 10:44:51,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-09-30 10:44:51,164 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:51,164 INFO L375 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-09-30 10:44:51,164 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:51,164 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:51,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1796486211, now seen corresponding path program 84 times [2018-09-30 10:44:51,165 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:51,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:51,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:51,165 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:51,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:51,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:51,626 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:51,626 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 [2018-09-30 10:44:51,636 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:44:51,726 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-09-30 10:44:51,727 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:51,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:51,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:51,903 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:51,903 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-09-30 10:44:51,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-09-30 10:44:51,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-09-30 10:44:51,904 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:51,904 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 87 states. [2018-09-30 10:44:52,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:52,527 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-09-30 10:44:52,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-09-30 10:44:52,528 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 87 [2018-09-30 10:44:52,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:52,528 INFO L225 Difference]: With dead ends: 91 [2018-09-30 10:44:52,528 INFO L226 Difference]: Without dead ends: 89 [2018-09-30 10:44:52,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:52,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-09-30 10:44:52,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-09-30 10:44:52,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-09-30 10:44:52,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-09-30 10:44:52,531 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-09-30 10:44:52,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:52,531 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-09-30 10:44:52,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-09-30 10:44:52,531 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-09-30 10:44:52,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-09-30 10:44:52,532 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:52,532 INFO L375 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-09-30 10:44:52,532 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:52,532 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:52,533 INFO L82 PathProgramCache]: Analyzing trace with hash -143500500, now seen corresponding path program 85 times [2018-09-30 10:44:52,533 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:52,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:52,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:52,533 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:52,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:52,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:52,994 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:52,994 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 [2018-09-30 10:44:53,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:53,073 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:53,257 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:53,257 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-09-30 10:44:53,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-09-30 10:44:53,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-09-30 10:44:53,259 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:53,259 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 88 states. [2018-09-30 10:44:53,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:53,815 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-09-30 10:44:53,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-09-30 10:44:53,815 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 88 [2018-09-30 10:44:53,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:53,816 INFO L225 Difference]: With dead ends: 92 [2018-09-30 10:44:53,816 INFO L226 Difference]: Without dead ends: 90 [2018-09-30 10:44:53,816 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:53,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-09-30 10:44:53,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-09-30 10:44:53,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-09-30 10:44:53,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-09-30 10:44:53,819 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-09-30 10:44:53,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:53,819 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-09-30 10:44:53,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-09-30 10:44:53,819 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-09-30 10:44:53,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-09-30 10:44:53,820 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:53,820 INFO L375 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-09-30 10:44:53,820 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:53,820 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:53,820 INFO L82 PathProgramCache]: Analyzing trace with hash -153546397, now seen corresponding path program 86 times [2018-09-30 10:44:53,820 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:53,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:53,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:53,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:53,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:54,326 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:54,326 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 10:44:54,333 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:44:54,398 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:44:54,398 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:54,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:54,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:54,573 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:54,573 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-09-30 10:44:54,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-09-30 10:44:54,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-09-30 10:44:54,575 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:54,575 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 89 states. [2018-09-30 10:44:55,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:55,104 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-09-30 10:44:55,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-09-30 10:44:55,104 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 89 [2018-09-30 10:44:55,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:55,104 INFO L225 Difference]: With dead ends: 93 [2018-09-30 10:44:55,105 INFO L226 Difference]: Without dead ends: 91 [2018-09-30 10:44:55,105 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:55,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-09-30 10:44:55,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-09-30 10:44:55,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-09-30 10:44:55,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-09-30 10:44:55,107 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-09-30 10:44:55,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:55,107 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-09-30 10:44:55,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-09-30 10:44:55,107 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-09-30 10:44:55,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-09-30 10:44:55,107 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:55,107 INFO L375 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-09-30 10:44:55,107 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:55,108 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:55,108 INFO L82 PathProgramCache]: Analyzing trace with hash -464969204, now seen corresponding path program 87 times [2018-09-30 10:44:55,108 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:55,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:55,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:55,108 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:55,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:55,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:55,877 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:55,877 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 [2018-09-30 10:44:55,887 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:44:55,981 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2018-09-30 10:44:55,982 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:55,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:56,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:56,162 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:56,163 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-09-30 10:44:56,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-09-30 10:44:56,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-09-30 10:44:56,164 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:56,164 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 90 states. [2018-09-30 10:44:56,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:56,752 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-09-30 10:44:56,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-09-30 10:44:56,753 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90 [2018-09-30 10:44:56,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:56,753 INFO L225 Difference]: With dead ends: 94 [2018-09-30 10:44:56,753 INFO L226 Difference]: Without dead ends: 92 [2018-09-30 10:44:56,754 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:56,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-09-30 10:44:56,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-09-30 10:44:56,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-09-30 10:44:56,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-09-30 10:44:56,755 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-09-30 10:44:56,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:56,756 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-09-30 10:44:56,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-09-30 10:44:56,756 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-09-30 10:44:56,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-09-30 10:44:56,756 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:56,756 INFO L375 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-09-30 10:44:56,756 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:56,756 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:56,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1529141629, now seen corresponding path program 88 times [2018-09-30 10:44:56,757 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:56,757 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:56,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:56,757 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:56,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:57,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:57,255 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:57,256 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 [2018-09-30 10:44:57,262 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:44:57,329 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:44:57,330 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:57,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:57,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:57,512 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:57,512 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-09-30 10:44:57,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-09-30 10:44:57,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-09-30 10:44:57,513 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:57,514 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 91 states. [2018-09-30 10:44:58,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:58,110 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-09-30 10:44:58,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-09-30 10:44:58,110 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 91 [2018-09-30 10:44:58,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:58,111 INFO L225 Difference]: With dead ends: 95 [2018-09-30 10:44:58,111 INFO L226 Difference]: Without dead ends: 93 [2018-09-30 10:44:58,111 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:58,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-09-30 10:44:58,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-09-30 10:44:58,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-09-30 10:44:58,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-09-30 10:44:58,113 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-09-30 10:44:58,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:58,113 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-09-30 10:44:58,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-09-30 10:44:58,113 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-09-30 10:44:58,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-09-30 10:44:58,113 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:58,113 INFO L375 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-09-30 10:44:58,114 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:58,114 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:58,114 INFO L82 PathProgramCache]: Analyzing trace with hash -158748436, now seen corresponding path program 89 times [2018-09-30 10:44:58,114 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:58,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:58,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:58,115 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:58,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:58,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:58,624 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:58,624 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 [2018-09-30 10:44:58,631 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:44:58,732 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-09-30 10:44:58,732 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:58,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:58,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:58,950 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:58,950 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-09-30 10:44:58,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-09-30 10:44:58,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-09-30 10:44:58,951 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:58,951 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 92 states. [2018-09-30 10:44:59,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:59,561 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-09-30 10:44:59,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-09-30 10:44:59,562 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 92 [2018-09-30 10:44:59,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:59,562 INFO L225 Difference]: With dead ends: 96 [2018-09-30 10:44:59,562 INFO L226 Difference]: Without dead ends: 94 [2018-09-30 10:44:59,562 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:59,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-09-30 10:44:59,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-09-30 10:44:59,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-09-30 10:44:59,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-09-30 10:44:59,564 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-09-30 10:44:59,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:59,565 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-09-30 10:44:59,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-09-30 10:44:59,565 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-09-30 10:44:59,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-09-30 10:44:59,565 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:59,565 INFO L375 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-09-30 10:44:59,565 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:59,565 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:59,566 INFO L82 PathProgramCache]: Analyzing trace with hash -626232413, now seen corresponding path program 90 times [2018-09-30 10:44:59,566 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:59,566 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:59,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:59,566 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:59,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:00,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:00,080 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:00,080 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 [2018-09-30 10:45:00,088 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:45:00,183 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2018-09-30 10:45:00,183 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:00,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:00,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:00,470 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:00,471 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-09-30 10:45:00,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-09-30 10:45:00,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-09-30 10:45:00,472 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:00,472 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 93 states. [2018-09-30 10:45:01,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:01,297 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-09-30 10:45:01,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-09-30 10:45:01,297 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 93 [2018-09-30 10:45:01,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:01,298 INFO L225 Difference]: With dead ends: 97 [2018-09-30 10:45:01,298 INFO L226 Difference]: Without dead ends: 95 [2018-09-30 10:45:01,298 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:01,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-09-30 10:45:01,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-09-30 10:45:01,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-09-30 10:45:01,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-09-30 10:45:01,301 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-09-30 10:45:01,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:01,301 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-09-30 10:45:01,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-09-30 10:45:01,301 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-09-30 10:45:01,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-09-30 10:45:01,301 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:01,302 INFO L375 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-09-30 10:45:01,302 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:01,302 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:01,302 INFO L82 PathProgramCache]: Analyzing trace with hash 2061633484, now seen corresponding path program 91 times [2018-09-30 10:45:01,302 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:01,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:01,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:01,303 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:01,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:01,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:01,824 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:01,824 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 [2018-09-30 10:45:01,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:01,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:02,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:02,096 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:02,097 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-09-30 10:45:02,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-09-30 10:45:02,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-09-30 10:45:02,098 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:02,098 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2018-09-30 10:45:02,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:02,955 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-09-30 10:45:02,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-09-30 10:45:02,955 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94 [2018-09-30 10:45:02,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:02,956 INFO L225 Difference]: With dead ends: 98 [2018-09-30 10:45:02,956 INFO L226 Difference]: Without dead ends: 96 [2018-09-30 10:45:02,956 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:02,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-09-30 10:45:02,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-09-30 10:45:02,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-09-30 10:45:02,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-09-30 10:45:02,958 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-09-30 10:45:02,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:02,958 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-09-30 10:45:02,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-09-30 10:45:02,959 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-09-30 10:45:02,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-09-30 10:45:02,959 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:02,959 INFO L375 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-09-30 10:45:02,960 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:02,960 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:02,960 INFO L82 PathProgramCache]: Analyzing trace with hash -513869629, now seen corresponding path program 92 times [2018-09-30 10:45:02,960 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:02,960 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:02,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:02,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:02,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:03,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:03,467 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:03,468 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 [2018-09-30 10:45:03,474 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:45:03,541 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:45:03,541 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:03,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:03,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:03,730 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:03,730 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-09-30 10:45:03,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-09-30 10:45:03,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-09-30 10:45:03,732 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:03,732 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 95 states. [2018-09-30 10:45:04,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:04,405 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-09-30 10:45:04,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-09-30 10:45:04,405 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 95 [2018-09-30 10:45:04,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:04,406 INFO L225 Difference]: With dead ends: 99 [2018-09-30 10:45:04,406 INFO L226 Difference]: Without dead ends: 97 [2018-09-30 10:45:04,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:04,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-09-30 10:45:04,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-09-30 10:45:04,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-09-30 10:45:04,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-09-30 10:45:04,408 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-09-30 10:45:04,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:04,408 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-09-30 10:45:04,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-09-30 10:45:04,408 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-09-30 10:45:04,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-09-30 10:45:04,409 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:04,409 INFO L375 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-09-30 10:45:04,409 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:04,409 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:04,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1249912492, now seen corresponding path program 93 times [2018-09-30 10:45:04,409 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:04,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:04,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:04,410 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:04,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:05,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:05,305 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:05,305 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 [2018-09-30 10:45:05,311 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:45:05,429 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2018-09-30 10:45:05,430 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:05,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:05,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:05,786 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:05,786 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-09-30 10:45:05,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-09-30 10:45:05,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-09-30 10:45:05,788 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:05,788 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 96 states. [2018-09-30 10:45:06,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:06,617 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-09-30 10:45:06,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-09-30 10:45:06,617 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 96 [2018-09-30 10:45:06,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:06,618 INFO L225 Difference]: With dead ends: 100 [2018-09-30 10:45:06,618 INFO L226 Difference]: Without dead ends: 98 [2018-09-30 10:45:06,618 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:06,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-09-30 10:45:06,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-09-30 10:45:06,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-09-30 10:45:06,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-09-30 10:45:06,620 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-09-30 10:45:06,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:06,620 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-09-30 10:45:06,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-09-30 10:45:06,620 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-09-30 10:45:06,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-09-30 10:45:06,621 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:06,621 INFO L375 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-09-30 10:45:06,621 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:06,621 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:06,621 INFO L82 PathProgramCache]: Analyzing trace with hash 92583395, now seen corresponding path program 94 times [2018-09-30 10:45:06,621 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:06,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:06,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:06,622 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:06,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:07,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:07,157 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:07,157 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 [2018-09-30 10:45:07,164 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:45:07,238 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:45:07,238 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:07,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:07,482 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:07,482 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-09-30 10:45:07,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-09-30 10:45:07,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-09-30 10:45:07,484 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:07,484 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 97 states. [2018-09-30 10:45:08,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:08,176 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-09-30 10:45:08,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-09-30 10:45:08,176 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 97 [2018-09-30 10:45:08,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:08,177 INFO L225 Difference]: With dead ends: 101 [2018-09-30 10:45:08,177 INFO L226 Difference]: Without dead ends: 99 [2018-09-30 10:45:08,177 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:08,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-09-30 10:45:08,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-09-30 10:45:08,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-09-30 10:45:08,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-09-30 10:45:08,179 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-09-30 10:45:08,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:08,179 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-09-30 10:45:08,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-09-30 10:45:08,180 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-09-30 10:45:08,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-30 10:45:08,180 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:08,180 INFO L375 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-09-30 10:45:08,180 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:08,180 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:08,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1424880244, now seen corresponding path program 95 times [2018-09-30 10:45:08,181 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:08,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:08,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:08,181 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:08,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:08,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:08,724 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:08,724 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 [2018-09-30 10:45:08,733 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:45:08,847 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-09-30 10:45:08,847 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:08,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:09,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:09,042 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:09,042 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-09-30 10:45:09,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-09-30 10:45:09,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-09-30 10:45:09,044 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:09,044 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 98 states. [2018-09-30 10:45:09,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:09,976 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-09-30 10:45:09,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-09-30 10:45:09,976 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98 [2018-09-30 10:45:09,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:09,977 INFO L225 Difference]: With dead ends: 102 [2018-09-30 10:45:09,977 INFO L226 Difference]: Without dead ends: 100 [2018-09-30 10:45:09,977 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:09,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-09-30 10:45:09,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-09-30 10:45:09,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-09-30 10:45:09,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-09-30 10:45:09,979 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-09-30 10:45:09,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:09,979 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-09-30 10:45:09,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-09-30 10:45:09,979 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-09-30 10:45:09,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-09-30 10:45:09,980 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:09,980 INFO L375 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-09-30 10:45:09,980 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:09,980 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:09,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1221612797, now seen corresponding path program 96 times [2018-09-30 10:45:09,980 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:09,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:09,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:09,981 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:09,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:10,623 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:10,623 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 10:45:10,631 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:45:10,749 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-09-30 10:45:10,749 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:10,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:11,003 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:11,003 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-09-30 10:45:11,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-09-30 10:45:11,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-09-30 10:45:11,005 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:11,005 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 99 states. [2018-09-30 10:45:11,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:11,714 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-09-30 10:45:11,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-09-30 10:45:11,714 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 99 [2018-09-30 10:45:11,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:11,715 INFO L225 Difference]: With dead ends: 103 [2018-09-30 10:45:11,715 INFO L226 Difference]: Without dead ends: 101 [2018-09-30 10:45:11,715 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:11,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-09-30 10:45:11,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-09-30 10:45:11,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-09-30 10:45:11,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-09-30 10:45:11,717 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-09-30 10:45:11,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:11,717 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-09-30 10:45:11,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-09-30 10:45:11,717 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-09-30 10:45:11,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-09-30 10:45:11,718 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:11,718 INFO L375 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-09-30 10:45:11,718 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:11,718 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:11,718 INFO L82 PathProgramCache]: Analyzing trace with hash 784710764, now seen corresponding path program 97 times [2018-09-30 10:45:11,718 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:11,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:11,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:11,719 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:11,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:12,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:12,649 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:12,649 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 [2018-09-30 10:45:12,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:12,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:12,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:12,935 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:12,935 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-09-30 10:45:12,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-09-30 10:45:12,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-09-30 10:45:12,937 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:12,937 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 100 states. [2018-09-30 10:45:13,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:13,698 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-09-30 10:45:13,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-09-30 10:45:13,698 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 100 [2018-09-30 10:45:13,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:13,699 INFO L225 Difference]: With dead ends: 104 [2018-09-30 10:45:13,699 INFO L226 Difference]: Without dead ends: 102 [2018-09-30 10:45:13,699 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:13,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-09-30 10:45:13,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-09-30 10:45:13,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-09-30 10:45:13,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-09-30 10:45:13,702 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-09-30 10:45:13,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:13,702 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-09-30 10:45:13,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-09-30 10:45:13,702 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-09-30 10:45:13,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-09-30 10:45:13,703 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:13,703 INFO L375 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-09-30 10:45:13,703 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:13,703 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:13,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1443768285, now seen corresponding path program 98 times [2018-09-30 10:45:13,703 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:13,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:13,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:13,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:13,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:14,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:14,290 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:14,290 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 [2018-09-30 10:45:14,296 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:45:14,371 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:45:14,371 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:14,374 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:14,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:14,572 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:14,573 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-09-30 10:45:14,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-09-30 10:45:14,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-09-30 10:45:14,574 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:14,574 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2018-09-30 10:45:15,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:15,618 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-09-30 10:45:15,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-09-30 10:45:15,618 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2018-09-30 10:45:15,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:15,619 INFO L225 Difference]: With dead ends: 105 [2018-09-30 10:45:15,619 INFO L226 Difference]: Without dead ends: 103 [2018-09-30 10:45:15,619 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:15,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-30 10:45:15,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-09-30 10:45:15,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-09-30 10:45:15,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-09-30 10:45:15,621 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-09-30 10:45:15,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:15,621 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-09-30 10:45:15,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-09-30 10:45:15,621 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-09-30 10:45:15,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-09-30 10:45:15,621 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:15,622 INFO L375 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-09-30 10:45:15,622 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:15,622 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:15,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1807142068, now seen corresponding path program 99 times [2018-09-30 10:45:15,622 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:15,622 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:15,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:15,623 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:15,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:16,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:16,466 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:16,466 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 [2018-09-30 10:45:16,473 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:45:16,579 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2018-09-30 10:45:16,580 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:16,583 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:16,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:16,784 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:16,784 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-09-30 10:45:16,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-09-30 10:45:16,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-09-30 10:45:16,786 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:16,786 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 102 states. [2018-09-30 10:45:17,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:17,883 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-09-30 10:45:17,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-09-30 10:45:17,883 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102 [2018-09-30 10:45:17,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:17,884 INFO L225 Difference]: With dead ends: 106 [2018-09-30 10:45:17,884 INFO L226 Difference]: Without dead ends: 104 [2018-09-30 10:45:17,884 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:17,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-09-30 10:45:17,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-09-30 10:45:17,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-09-30 10:45:17,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-09-30 10:45:17,887 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-09-30 10:45:17,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:17,887 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-09-30 10:45:17,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-09-30 10:45:17,887 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-09-30 10:45:17,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-09-30 10:45:17,888 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:17,888 INFO L375 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-09-30 10:45:17,888 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:17,888 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:17,888 INFO L82 PathProgramCache]: Analyzing trace with hash -186827453, now seen corresponding path program 100 times [2018-09-30 10:45:17,889 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:17,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:17,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:17,890 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:17,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:18,485 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:18,485 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:18,485 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 [2018-09-30 10:45:18,494 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:45:18,568 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:45:18,569 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:18,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:18,760 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:18,780 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:18,780 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-09-30 10:45:18,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-09-30 10:45:18,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-09-30 10:45:18,781 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:18,781 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 103 states. [2018-09-30 10:45:19,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:19,896 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-09-30 10:45:19,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-09-30 10:45:19,897 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 103 [2018-09-30 10:45:19,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:19,898 INFO L225 Difference]: With dead ends: 107 [2018-09-30 10:45:19,898 INFO L226 Difference]: Without dead ends: 105 [2018-09-30 10:45:19,898 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:19,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-09-30 10:45:19,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-09-30 10:45:19,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-09-30 10:45:19,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-09-30 10:45:19,907 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-09-30 10:45:19,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:19,907 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-09-30 10:45:19,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-09-30 10:45:19,908 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-09-30 10:45:19,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-09-30 10:45:19,909 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:19,909 INFO L375 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-09-30 10:45:19,909 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:19,909 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:19,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1496681940, now seen corresponding path program 101 times [2018-09-30 10:45:19,910 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:19,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:19,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:19,910 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:19,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:20,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:20,570 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:20,570 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 [2018-09-30 10:45:20,577 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:45:20,710 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2018-09-30 10:45:20,710 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:20,715 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:21,097 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:21,117 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:21,118 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-09-30 10:45:21,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-09-30 10:45:21,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-09-30 10:45:21,120 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:21,120 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 104 states. [2018-09-30 10:45:22,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:22,225 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-09-30 10:45:22,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-09-30 10:45:22,225 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 104 [2018-09-30 10:45:22,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:22,226 INFO L225 Difference]: With dead ends: 108 [2018-09-30 10:45:22,226 INFO L226 Difference]: Without dead ends: 106 [2018-09-30 10:45:22,226 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:22,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-09-30 10:45:22,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-09-30 10:45:22,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-09-30 10:45:22,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-09-30 10:45:22,229 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-09-30 10:45:22,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:22,229 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-09-30 10:45:22,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-09-30 10:45:22,229 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-09-30 10:45:22,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-09-30 10:45:22,230 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:22,230 INFO L375 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-09-30 10:45:22,230 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:22,230 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:22,231 INFO L82 PathProgramCache]: Analyzing trace with hash 847501923, now seen corresponding path program 102 times [2018-09-30 10:45:22,231 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:22,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:22,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:22,231 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:22,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:22,931 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:22,931 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 [2018-09-30 10:45:22,940 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:45:23,055 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2018-09-30 10:45:23,055 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:23,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:23,253 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:23,273 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:23,273 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-09-30 10:45:23,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-09-30 10:45:23,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-09-30 10:45:23,275 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:23,275 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2018-09-30 10:45:24,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:24,431 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-09-30 10:45:24,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-09-30 10:45:24,431 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2018-09-30 10:45:24,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:24,432 INFO L225 Difference]: With dead ends: 109 [2018-09-30 10:45:24,432 INFO L226 Difference]: Without dead ends: 107 [2018-09-30 10:45:24,432 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:24,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-09-30 10:45:24,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-09-30 10:45:24,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-09-30 10:45:24,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-09-30 10:45:24,434 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-09-30 10:45:24,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:24,435 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-09-30 10:45:24,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-09-30 10:45:24,435 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-09-30 10:45:24,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-09-30 10:45:24,435 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:24,436 INFO L375 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-09-30 10:45:24,436 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:24,436 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:24,436 INFO L82 PathProgramCache]: Analyzing trace with hash 502757644, now seen corresponding path program 103 times [2018-09-30 10:45:24,436 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:24,436 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:24,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:24,437 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:24,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:25,089 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:25,090 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:25,090 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 [2018-09-30 10:45:25,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:25,181 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:25,441 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:25,460 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:25,461 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-09-30 10:45:25,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-09-30 10:45:25,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-09-30 10:45:25,462 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:25,462 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 106 states. [2018-09-30 10:45:26,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:26,292 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-09-30 10:45:26,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-09-30 10:45:26,292 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 106 [2018-09-30 10:45:26,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:26,293 INFO L225 Difference]: With dead ends: 110 [2018-09-30 10:45:26,293 INFO L226 Difference]: Without dead ends: 108 [2018-09-30 10:45:26,293 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:26,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-09-30 10:45:26,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-09-30 10:45:26,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-09-30 10:45:26,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-09-30 10:45:26,295 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-09-30 10:45:26,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:26,296 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-09-30 10:45:26,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-09-30 10:45:26,296 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-09-30 10:45:26,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-09-30 10:45:26,296 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:26,297 INFO L375 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-09-30 10:45:26,297 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:26,297 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:26,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1594380413, now seen corresponding path program 104 times [2018-09-30 10:45:26,297 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:26,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:26,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:26,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:26,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:26,977 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:26,978 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:26,978 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 [2018-09-30 10:45:26,984 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:45:27,064 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:45:27,064 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:27,067 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:27,321 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:27,341 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:27,342 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-09-30 10:45:27,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-09-30 10:45:27,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-09-30 10:45:27,343 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:27,343 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 107 states. [2018-09-30 10:45:28,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:28,258 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-09-30 10:45:28,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-09-30 10:45:28,258 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 107 [2018-09-30 10:45:28,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:28,259 INFO L225 Difference]: With dead ends: 111 [2018-09-30 10:45:28,259 INFO L226 Difference]: Without dead ends: 109 [2018-09-30 10:45:28,259 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:28,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-09-30 10:45:28,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-09-30 10:45:28,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-09-30 10:45:28,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-09-30 10:45:28,261 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-09-30 10:45:28,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:28,261 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-09-30 10:45:28,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-09-30 10:45:28,261 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-09-30 10:45:28,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-09-30 10:45:28,262 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:28,262 INFO L375 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-09-30 10:45:28,262 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:28,262 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:28,262 INFO L82 PathProgramCache]: Analyzing trace with hash 2113816556, now seen corresponding path program 105 times [2018-09-30 10:45:28,262 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:28,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:28,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:28,263 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:28,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:28,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:28,950 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:28,950 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 10:45:28,959 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:45:29,079 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-09-30 10:45:29,079 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:29,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:29,269 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:29,289 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:29,289 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-09-30 10:45:29,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-09-30 10:45:29,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-09-30 10:45:29,291 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:29,291 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 108 states. [2018-09-30 10:45:30,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:30,519 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-09-30 10:45:30,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-09-30 10:45:30,519 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 108 [2018-09-30 10:45:30,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:30,519 INFO L225 Difference]: With dead ends: 112 [2018-09-30 10:45:30,519 INFO L226 Difference]: Without dead ends: 110 [2018-09-30 10:45:30,520 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:30,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-09-30 10:45:30,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-09-30 10:45:30,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-09-30 10:45:30,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-09-30 10:45:30,521 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-09-30 10:45:30,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:30,522 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-09-30 10:45:30,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-09-30 10:45:30,522 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-09-30 10:45:30,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-09-30 10:45:30,522 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:30,522 INFO L375 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-09-30 10:45:30,523 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:30,523 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:30,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1103805603, now seen corresponding path program 106 times [2018-09-30 10:45:30,523 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:30,523 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:30,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:30,524 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:30,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:31,316 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:31,316 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:31,316 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 [2018-09-30 10:45:31,323 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:45:31,402 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:45:31,402 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:31,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:31,591 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:31,611 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:31,611 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-09-30 10:45:31,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-09-30 10:45:31,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-09-30 10:45:31,613 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:31,613 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 109 states. [2018-09-30 10:45:32,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:32,731 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-09-30 10:45:32,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-09-30 10:45:32,731 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 109 [2018-09-30 10:45:32,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:32,732 INFO L225 Difference]: With dead ends: 113 [2018-09-30 10:45:32,732 INFO L226 Difference]: Without dead ends: 111 [2018-09-30 10:45:32,733 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:32,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-09-30 10:45:32,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-09-30 10:45:32,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-09-30 10:45:32,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-09-30 10:45:32,735 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-09-30 10:45:32,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:32,735 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-09-30 10:45:32,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-09-30 10:45:32,735 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-09-30 10:45:32,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-09-30 10:45:32,736 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:32,736 INFO L375 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-09-30 10:45:32,736 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:32,736 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:32,736 INFO L82 PathProgramCache]: Analyzing trace with hash -141762868, now seen corresponding path program 107 times [2018-09-30 10:45:32,736 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:32,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:32,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:32,737 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:32,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:33,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:33,397 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:33,397 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 [2018-09-30 10:45:33,404 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:45:33,535 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-09-30 10:45:33,535 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:33,540 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:33,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:33,755 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:33,755 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-09-30 10:45:33,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-09-30 10:45:33,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-09-30 10:45:33,757 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:33,757 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 110 states. [2018-09-30 10:45:34,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:34,967 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-09-30 10:45:34,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-09-30 10:45:34,967 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 110 [2018-09-30 10:45:34,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:34,968 INFO L225 Difference]: With dead ends: 114 [2018-09-30 10:45:34,968 INFO L226 Difference]: Without dead ends: 112 [2018-09-30 10:45:34,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:34,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-09-30 10:45:34,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-09-30 10:45:34,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-09-30 10:45:34,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-09-30 10:45:34,970 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2018-09-30 10:45:34,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:34,970 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-09-30 10:45:34,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-09-30 10:45:34,970 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-09-30 10:45:34,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-09-30 10:45:34,970 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:34,971 INFO L375 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2018-09-30 10:45:34,971 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:34,971 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:34,971 INFO L82 PathProgramCache]: Analyzing trace with hash -99679805, now seen corresponding path program 108 times [2018-09-30 10:45:34,971 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:34,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:34,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:34,972 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:34,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:35,648 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:35,648 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:35,648 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:45:35,655 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:45:35,776 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-09-30 10:45:35,776 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:35,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:35,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:35,994 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:35,995 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-09-30 10:45:35,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-09-30 10:45:35,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-09-30 10:45:35,997 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:35,997 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 111 states. [2018-09-30 10:45:37,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:37,118 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-09-30 10:45:37,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-09-30 10:45:37,118 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 111 [2018-09-30 10:45:37,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:37,119 INFO L225 Difference]: With dead ends: 115 [2018-09-30 10:45:37,119 INFO L226 Difference]: Without dead ends: 113 [2018-09-30 10:45:37,119 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:37,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-09-30 10:45:37,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-09-30 10:45:37,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-09-30 10:45:37,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-09-30 10:45:37,121 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 111 [2018-09-30 10:45:37,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:37,122 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-09-30 10:45:37,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-09-30 10:45:37,122 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-09-30 10:45:37,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-09-30 10:45:37,122 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:37,122 INFO L375 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2018-09-30 10:45:37,123 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:37,123 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:37,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1204895148, now seen corresponding path program 109 times [2018-09-30 10:45:37,123 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:37,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:37,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:37,124 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:37,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:37,836 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:37,836 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:45:37,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:37,927 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:38,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:38,153 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:38,153 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-09-30 10:45:38,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-09-30 10:45:38,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-09-30 10:45:38,155 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:38,155 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 112 states. [2018-09-30 10:45:39,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:39,481 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2018-09-30 10:45:39,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-09-30 10:45:39,481 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 112 [2018-09-30 10:45:39,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:39,482 INFO L225 Difference]: With dead ends: 116 [2018-09-30 10:45:39,482 INFO L226 Difference]: Without dead ends: 114 [2018-09-30 10:45:39,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:39,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-09-30 10:45:39,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-09-30 10:45:39,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-09-30 10:45:39,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-09-30 10:45:39,485 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 112 [2018-09-30 10:45:39,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:39,485 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-09-30 10:45:39,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-09-30 10:45:39,485 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-09-30 10:45:39,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-09-30 10:45:39,486 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:39,486 INFO L375 BasicCegarLoop]: trace histogram [110, 1, 1, 1] [2018-09-30 10:45:39,486 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:39,486 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:39,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1302954269, now seen corresponding path program 110 times [2018-09-30 10:45:39,486 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:39,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:39,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:39,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:39,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:40,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:40,219 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:40,219 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:45:40,226 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:45:40,310 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:45:40,310 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:40,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:40,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:40,531 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:40,531 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-09-30 10:45:40,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-09-30 10:45:40,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-09-30 10:45:40,533 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:40,533 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 113 states. [2018-09-30 10:45:41,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:41,929 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-09-30 10:45:41,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-09-30 10:45:41,929 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 113 [2018-09-30 10:45:41,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:41,930 INFO L225 Difference]: With dead ends: 117 [2018-09-30 10:45:41,930 INFO L226 Difference]: Without dead ends: 115 [2018-09-30 10:45:41,930 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:41,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-09-30 10:45:41,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-09-30 10:45:41,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-09-30 10:45:41,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-09-30 10:45:41,932 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 113 [2018-09-30 10:45:41,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:41,933 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-09-30 10:45:41,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-09-30 10:45:41,933 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-09-30 10:45:41,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-30 10:45:41,933 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:41,933 INFO L375 BasicCegarLoop]: trace histogram [111, 1, 1, 1] [2018-09-30 10:45:41,934 INFO L423 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:41,934 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:41,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1736874868, now seen corresponding path program 111 times [2018-09-30 10:45:41,934 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:41,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:41,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:41,935 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:41,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:42,683 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:42,683 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:45:42,689 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:45:42,827 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2018-09-30 10:45:42,827 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:42,831 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:43,026 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:43,046 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:43,047 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-09-30 10:45:43,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-09-30 10:45:43,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-09-30 10:45:43,048 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:43,048 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 114 states. [2018-09-30 10:45:44,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:44,295 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-09-30 10:45:44,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-09-30 10:45:44,296 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 114 [2018-09-30 10:45:44,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:44,296 INFO L225 Difference]: With dead ends: 118 [2018-09-30 10:45:44,296 INFO L226 Difference]: Without dead ends: 116 [2018-09-30 10:45:44,296 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:44,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-09-30 10:45:44,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-09-30 10:45:44,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-09-30 10:45:44,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-09-30 10:45:44,299 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 114 [2018-09-30 10:45:44,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:44,299 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-09-30 10:45:44,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-09-30 10:45:44,299 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-09-30 10:45:44,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-09-30 10:45:44,300 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:44,300 INFO L375 BasicCegarLoop]: trace histogram [112, 1, 1, 1] [2018-09-30 10:45:44,300 INFO L423 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:44,300 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:44,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1991455747, now seen corresponding path program 112 times [2018-09-30 10:45:44,300 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:44,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:44,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:44,301 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:44,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:45,052 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:45,053 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:45,053 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:45:45,060 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:45:45,146 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:45:45,147 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:45,150 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:45,469 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:45,469 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-09-30 10:45:45,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-09-30 10:45:45,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-09-30 10:45:45,471 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:45,471 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 115 states. [2018-09-30 10:45:46,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:46,768 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-09-30 10:45:46,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-09-30 10:45:46,769 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 115 [2018-09-30 10:45:46,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:46,769 INFO L225 Difference]: With dead ends: 119 [2018-09-30 10:45:46,769 INFO L226 Difference]: Without dead ends: 117 [2018-09-30 10:45:46,769 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:46,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-09-30 10:45:46,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-09-30 10:45:46,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-09-30 10:45:46,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-09-30 10:45:46,771 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 115 [2018-09-30 10:45:46,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:46,771 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-09-30 10:45:46,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-09-30 10:45:46,772 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-09-30 10:45:46,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-09-30 10:45:46,772 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:46,772 INFO L375 BasicCegarLoop]: trace histogram [113, 1, 1, 1] [2018-09-30 10:45:46,772 INFO L423 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:46,772 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:46,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1605587820, now seen corresponding path program 113 times [2018-09-30 10:45:46,773 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:46,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:46,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:46,773 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:46,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:47,504 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:47,505 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:47,505 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:45:47,512 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:45:47,658 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2018-09-30 10:45:47,658 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:47,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:48,023 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:48,043 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:48,044 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-09-30 10:45:48,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-09-30 10:45:48,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-09-30 10:45:48,045 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:48,045 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 116 states. [2018-09-30 10:45:49,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:49,131 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-09-30 10:45:49,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-09-30 10:45:49,132 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 116 [2018-09-30 10:45:49,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:49,132 INFO L225 Difference]: With dead ends: 120 [2018-09-30 10:45:49,132 INFO L226 Difference]: Without dead ends: 118 [2018-09-30 10:45:49,132 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:49,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-09-30 10:45:49,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-09-30 10:45:49,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-09-30 10:45:49,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-09-30 10:45:49,135 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 116 [2018-09-30 10:45:49,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:49,135 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-09-30 10:45:49,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-09-30 10:45:49,135 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-09-30 10:45:49,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-09-30 10:45:49,135 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:49,135 INFO L375 BasicCegarLoop]: trace histogram [114, 1, 1, 1] [2018-09-30 10:45:49,135 INFO L423 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:49,136 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:49,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1766383325, now seen corresponding path program 114 times [2018-09-30 10:45:49,136 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:49,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:49,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:49,136 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:49,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:49,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:49,860 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:49,860 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:45:49,867 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:45:49,996 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2018-09-30 10:45:49,996 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:50,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:50,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:50,228 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:50,228 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2018-09-30 10:45:50,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-09-30 10:45:50,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-09-30 10:45:50,230 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:50,230 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 117 states. [2018-09-30 10:45:51,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:51,438 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-09-30 10:45:51,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-09-30 10:45:51,438 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 117 [2018-09-30 10:45:51,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:51,439 INFO L225 Difference]: With dead ends: 121 [2018-09-30 10:45:51,439 INFO L226 Difference]: Without dead ends: 119 [2018-09-30 10:45:51,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:51,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-09-30 10:45:51,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-09-30 10:45:51,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-30 10:45:51,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-09-30 10:45:51,441 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 117 [2018-09-30 10:45:51,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:51,441 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-09-30 10:45:51,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-09-30 10:45:51,441 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-09-30 10:45:51,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-30 10:45:51,442 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:51,442 INFO L375 BasicCegarLoop]: trace histogram [115, 1, 1, 1] [2018-09-30 10:45:51,442 INFO L423 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:51,442 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:51,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1076693580, now seen corresponding path program 115 times [2018-09-30 10:45:51,443 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:51,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:51,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:51,443 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:51,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:52,452 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:52,453 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:52,453 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:45:52,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:52,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:52,773 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:52,773 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2018-09-30 10:45:52,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-09-30 10:45:52,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-09-30 10:45:52,775 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:52,775 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 118 states. [2018-09-30 10:45:54,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:54,028 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2018-09-30 10:45:54,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-09-30 10:45:54,028 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 118 [2018-09-30 10:45:54,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:54,029 INFO L225 Difference]: With dead ends: 122 [2018-09-30 10:45:54,029 INFO L226 Difference]: Without dead ends: 120 [2018-09-30 10:45:54,029 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:54,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-09-30 10:45:54,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-09-30 10:45:54,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-09-30 10:45:54,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-09-30 10:45:54,031 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 118 [2018-09-30 10:45:54,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:54,031 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-09-30 10:45:54,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-09-30 10:45:54,031 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-09-30 10:45:54,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-09-30 10:45:54,032 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:54,032 INFO L375 BasicCegarLoop]: trace histogram [116, 1, 1, 1] [2018-09-30 10:45:54,032 INFO L423 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:54,032 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:54,032 INFO L82 PathProgramCache]: Analyzing trace with hash -982235581, now seen corresponding path program 116 times [2018-09-30 10:45:54,032 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:54,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:54,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:54,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:54,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:54,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:54,790 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:54,790 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:45:54,797 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:45:54,890 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:45:54,890 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:54,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:55,112 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:55,133 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:55,133 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2018-09-30 10:45:55,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-09-30 10:45:55,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-09-30 10:45:55,135 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:55,135 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 119 states. [2018-09-30 10:45:56,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:56,186 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-09-30 10:45:56,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-09-30 10:45:56,186 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 119 [2018-09-30 10:45:56,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:56,186 INFO L225 Difference]: With dead ends: 123 [2018-09-30 10:45:56,186 INFO L226 Difference]: Without dead ends: 121 [2018-09-30 10:45:56,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:56,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-09-30 10:45:56,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-09-30 10:45:56,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-09-30 10:45:56,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-09-30 10:45:56,188 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 119 [2018-09-30 10:45:56,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:56,189 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-09-30 10:45:56,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-09-30 10:45:56,189 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-09-30 10:45:56,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-09-30 10:45:56,189 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:56,189 INFO L375 BasicCegarLoop]: trace histogram [117, 1, 1, 1] [2018-09-30 10:45:56,189 INFO L423 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:56,189 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:56,190 INFO L82 PathProgramCache]: Analyzing trace with hash -384530132, now seen corresponding path program 117 times [2018-09-30 10:45:56,190 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:56,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:56,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:56,190 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:56,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:57,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:57,165 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:57,165 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:45:57,172 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:45:57,311 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2018-09-30 10:45:57,311 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:57,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:57,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:57,545 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:57,545 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2018-09-30 10:45:57,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-09-30 10:45:57,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-09-30 10:45:57,547 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:57,547 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 120 states. [2018-09-30 10:45:58,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:58,776 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-09-30 10:45:58,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-09-30 10:45:58,777 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 120 [2018-09-30 10:45:58,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:58,777 INFO L225 Difference]: With dead ends: 124 [2018-09-30 10:45:58,777 INFO L226 Difference]: Without dead ends: 122 [2018-09-30 10:45:58,777 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:58,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-09-30 10:45:58,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-09-30 10:45:58,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-09-30 10:45:58,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-09-30 10:45:58,780 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 120 [2018-09-30 10:45:58,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:58,780 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-09-30 10:45:58,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-09-30 10:45:58,780 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-09-30 10:45:58,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-09-30 10:45:58,780 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:58,780 INFO L375 BasicCegarLoop]: trace histogram [118, 1, 1, 1] [2018-09-30 10:45:58,781 INFO L423 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:58,781 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:58,781 INFO L82 PathProgramCache]: Analyzing trace with hash 964469603, now seen corresponding path program 118 times [2018-09-30 10:45:58,781 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:58,781 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:58,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:58,781 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:58,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:59,578 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:59,578 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:59,578 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:45:59,587 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:45:59,676 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:45:59,676 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:59,680 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:59,907 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:59,927 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:59,927 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 120 [2018-09-30 10:45:59,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-09-30 10:45:59,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-09-30 10:45:59,929 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:59,929 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 121 states. [2018-09-30 10:46:01,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:01,231 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-09-30 10:46:01,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-09-30 10:46:01,231 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 121 [2018-09-30 10:46:01,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:01,231 INFO L225 Difference]: With dead ends: 125 [2018-09-30 10:46:01,231 INFO L226 Difference]: Without dead ends: 123 [2018-09-30 10:46:01,232 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:01,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-30 10:46:01,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-09-30 10:46:01,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-09-30 10:46:01,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-09-30 10:46:01,234 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 121 [2018-09-30 10:46:01,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:01,235 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-09-30 10:46:01,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-09-30 10:46:01,235 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-09-30 10:46:01,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-09-30 10:46:01,235 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:01,235 INFO L375 BasicCegarLoop]: trace histogram [119, 1, 1, 1] [2018-09-30 10:46:01,236 INFO L423 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:01,236 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:01,236 INFO L82 PathProgramCache]: Analyzing trace with hash -166211572, now seen corresponding path program 119 times [2018-09-30 10:46:01,236 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:01,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:01,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:01,237 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:01,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:02,234 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:02,234 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:02,235 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:02,241 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:46:02,396 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2018-09-30 10:46:02,397 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:02,402 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:02,609 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:02,630 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:02,630 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 121 [2018-09-30 10:46:02,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-09-30 10:46:02,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-09-30 10:46:02,632 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:02,632 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 122 states. [2018-09-30 10:46:03,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:03,743 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2018-09-30 10:46:03,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-09-30 10:46:03,743 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 122 [2018-09-30 10:46:03,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:03,743 INFO L225 Difference]: With dead ends: 126 [2018-09-30 10:46:03,744 INFO L226 Difference]: Without dead ends: 124 [2018-09-30 10:46:03,744 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:03,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-09-30 10:46:03,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-09-30 10:46:03,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-09-30 10:46:03,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-09-30 10:46:03,746 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 122 [2018-09-30 10:46:03,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:03,747 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-09-30 10:46:03,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-09-30 10:46:03,747 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-09-30 10:46:03,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-09-30 10:46:03,747 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:03,747 INFO L375 BasicCegarLoop]: trace histogram [120, 1, 1, 1] [2018-09-30 10:46:03,748 INFO L423 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:03,748 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:03,748 INFO L82 PathProgramCache]: Analyzing trace with hash -857589629, now seen corresponding path program 120 times [2018-09-30 10:46:03,748 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:03,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:03,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:03,749 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:03,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:04,585 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:04,585 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:04,585 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:04,593 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:46:04,735 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-09-30 10:46:04,735 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:04,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:04,955 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:04,975 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:04,975 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 122 [2018-09-30 10:46:04,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-09-30 10:46:04,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-09-30 10:46:04,977 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:04,977 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 123 states. [2018-09-30 10:46:06,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:06,419 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-09-30 10:46:06,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-09-30 10:46:06,419 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 123 [2018-09-30 10:46:06,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:06,420 INFO L225 Difference]: With dead ends: 127 [2018-09-30 10:46:06,420 INFO L226 Difference]: Without dead ends: 125 [2018-09-30 10:46:06,420 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:06,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-09-30 10:46:06,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-09-30 10:46:06,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-09-30 10:46:06,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-09-30 10:46:06,422 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 123 [2018-09-30 10:46:06,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:06,422 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-09-30 10:46:06,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-09-30 10:46:06,422 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-09-30 10:46:06,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-30 10:46:06,422 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:06,423 INFO L375 BasicCegarLoop]: trace histogram [121, 1, 1, 1] [2018-09-30 10:46:06,423 INFO L423 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:06,423 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:06,423 INFO L82 PathProgramCache]: Analyzing trace with hash -815472916, now seen corresponding path program 121 times [2018-09-30 10:46:06,423 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:06,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:06,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:06,424 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:06,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:07,413 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:07,414 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:07,414 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:07,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:46:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:07,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:07,774 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:07,795 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:07,795 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 123 [2018-09-30 10:46:07,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-09-30 10:46:07,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-09-30 10:46:07,798 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:07,798 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 124 states. [2018-09-30 10:46:09,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:09,142 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2018-09-30 10:46:09,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-09-30 10:46:09,142 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 124 [2018-09-30 10:46:09,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:09,143 INFO L225 Difference]: With dead ends: 128 [2018-09-30 10:46:09,143 INFO L226 Difference]: Without dead ends: 126 [2018-09-30 10:46:09,143 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:09,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-09-30 10:46:09,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-09-30 10:46:09,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-09-30 10:46:09,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-09-30 10:46:09,145 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 124 [2018-09-30 10:46:09,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:09,145 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-09-30 10:46:09,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-09-30 10:46:09,145 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-09-30 10:46:09,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-09-30 10:46:09,146 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:09,146 INFO L375 BasicCegarLoop]: trace histogram [122, 1, 1, 1] [2018-09-30 10:46:09,146 INFO L423 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:09,146 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:09,146 INFO L82 PathProgramCache]: Analyzing trace with hash 490145187, now seen corresponding path program 122 times [2018-09-30 10:46:09,146 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:09,146 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:09,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:09,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:46:09,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:09,969 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:09,969 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:09,969 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:09,976 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:46:10,068 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:46:10,068 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:10,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:10,300 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:10,322 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:10,322 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 124 [2018-09-30 10:46:10,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-09-30 10:46:10,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-09-30 10:46:10,324 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:10,324 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 125 states. [2018-09-30 10:46:11,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:11,883 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-09-30 10:46:11,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-09-30 10:46:11,884 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 125 [2018-09-30 10:46:11,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:11,884 INFO L225 Difference]: With dead ends: 129 [2018-09-30 10:46:11,884 INFO L226 Difference]: Without dead ends: 127 [2018-09-30 10:46:11,884 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:11,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-09-30 10:46:11,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-09-30 10:46:11,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-09-30 10:46:11,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-09-30 10:46:11,886 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 125 [2018-09-30 10:46:11,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:11,887 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-09-30 10:46:11,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-09-30 10:46:11,887 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-09-30 10:46:11,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-30 10:46:11,887 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:11,887 INFO L375 BasicCegarLoop]: trace histogram [123, 1, 1, 1] [2018-09-30 10:46:11,888 INFO L423 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:11,888 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:11,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1985366580, now seen corresponding path program 123 times [2018-09-30 10:46:11,888 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:11,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:11,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:11,889 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:11,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:12,979 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:12,980 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:12,980 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:12,986 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:46:13,140 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2018-09-30 10:46:13,140 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:13,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:13,382 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:13,382 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 125 [2018-09-30 10:46:13,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-09-30 10:46:13,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-09-30 10:46:13,384 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:13,384 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 126 states. [2018-09-30 10:46:14,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:14,921 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-09-30 10:46:14,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-09-30 10:46:14,921 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 126 [2018-09-30 10:46:14,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:14,922 INFO L225 Difference]: With dead ends: 130 [2018-09-30 10:46:14,922 INFO L226 Difference]: Without dead ends: 128 [2018-09-30 10:46:14,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:14,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-09-30 10:46:14,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-09-30 10:46:14,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-09-30 10:46:14,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-09-30 10:46:14,924 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 126 [2018-09-30 10:46:14,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:14,924 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-09-30 10:46:14,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-09-30 10:46:14,924 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-09-30 10:46:14,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-09-30 10:46:14,925 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:14,925 INFO L375 BasicCegarLoop]: trace histogram [124, 1, 1, 1] [2018-09-30 10:46:14,925 INFO L423 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:14,925 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:14,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1416820029, now seen corresponding path program 124 times [2018-09-30 10:46:14,925 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:14,925 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:14,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:14,926 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:14,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:15,772 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:15,773 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:15,773 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:15,779 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:46:15,872 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:46:15,872 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:15,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:16,099 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:16,120 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:16,120 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 126 [2018-09-30 10:46:16,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-09-30 10:46:16,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-09-30 10:46:16,122 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:16,122 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 127 states. [2018-09-30 10:46:17,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:17,547 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-09-30 10:46:17,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-09-30 10:46:17,548 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 127 [2018-09-30 10:46:17,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:17,548 INFO L225 Difference]: With dead ends: 131 [2018-09-30 10:46:17,548 INFO L226 Difference]: Without dead ends: 129 [2018-09-30 10:46:17,548 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:17,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-09-30 10:46:17,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-09-30 10:46:17,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-09-30 10:46:17,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-09-30 10:46:17,550 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 127 [2018-09-30 10:46:17,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:17,550 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-09-30 10:46:17,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-09-30 10:46:17,551 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-09-30 10:46:17,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-30 10:46:17,551 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:17,551 INFO L375 BasicCegarLoop]: trace histogram [125, 1, 1, 1] [2018-09-30 10:46:17,551 INFO L423 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:17,551 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:17,551 INFO L82 PathProgramCache]: Analyzing trace with hash -971746132, now seen corresponding path program 125 times [2018-09-30 10:46:17,552 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:17,552 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:17,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:17,552 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:17,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:18,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:18,436 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:18,436 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:18,446 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:46:18,607 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2018-09-30 10:46:18,607 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:18,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:18,837 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:18,857 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:18,857 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 127 [2018-09-30 10:46:18,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-09-30 10:46:18,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-09-30 10:46:18,859 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:18,859 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 128 states. [2018-09-30 10:46:20,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:20,276 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2018-09-30 10:46:20,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-09-30 10:46:20,276 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 128 [2018-09-30 10:46:20,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:20,277 INFO L225 Difference]: With dead ends: 132 [2018-09-30 10:46:20,277 INFO L226 Difference]: Without dead ends: 130 [2018-09-30 10:46:20,277 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:20,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-09-30 10:46:20,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-09-30 10:46:20,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-09-30 10:46:20,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-09-30 10:46:20,279 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 128 [2018-09-30 10:46:20,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:20,279 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-09-30 10:46:20,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-09-30 10:46:20,279 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-09-30 10:46:20,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-09-30 10:46:20,280 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:20,280 INFO L375 BasicCegarLoop]: trace histogram [126, 1, 1, 1] [2018-09-30 10:46:20,280 INFO L423 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:20,280 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:20,280 INFO L82 PathProgramCache]: Analyzing trace with hash -59357213, now seen corresponding path program 126 times [2018-09-30 10:46:20,280 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:20,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:20,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:20,281 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:20,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:21,192 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:21,192 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:21,199 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:46:21,348 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2018-09-30 10:46:21,349 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:21,353 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:21,580 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:21,602 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:21,602 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 128 [2018-09-30 10:46:21,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-09-30 10:46:21,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-09-30 10:46:21,604 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:21,604 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 129 states. [2018-09-30 10:46:23,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:23,072 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-09-30 10:46:23,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-09-30 10:46:23,073 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 129 [2018-09-30 10:46:23,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:23,073 INFO L225 Difference]: With dead ends: 133 [2018-09-30 10:46:23,073 INFO L226 Difference]: Without dead ends: 131 [2018-09-30 10:46:23,073 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:23,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-09-30 10:46:23,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-09-30 10:46:23,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-09-30 10:46:23,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-09-30 10:46:23,076 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 129 [2018-09-30 10:46:23,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:23,076 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-09-30 10:46:23,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-09-30 10:46:23,076 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-09-30 10:46:23,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-30 10:46:23,077 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:23,077 INFO L375 BasicCegarLoop]: trace histogram [127, 1, 1, 1] [2018-09-30 10:46:23,077 INFO L423 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:23,077 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:23,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1840071796, now seen corresponding path program 127 times [2018-09-30 10:46:23,077 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:23,078 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:23,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:23,078 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:23,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:23,978 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:23,979 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:23,979 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:23,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:46:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:24,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:24,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:24,341 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:24,341 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 129 [2018-09-30 10:46:24,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-09-30 10:46:24,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-09-30 10:46:24,344 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:24,344 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 130 states. [2018-09-30 10:46:25,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:25,901 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2018-09-30 10:46:25,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-09-30 10:46:25,901 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 130 [2018-09-30 10:46:25,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:25,902 INFO L225 Difference]: With dead ends: 134 [2018-09-30 10:46:25,902 INFO L226 Difference]: Without dead ends: 132 [2018-09-30 10:46:25,903 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:25,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-09-30 10:46:25,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-09-30 10:46:25,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-09-30 10:46:25,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-09-30 10:46:25,905 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 130 [2018-09-30 10:46:25,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:25,906 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-09-30 10:46:25,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-09-30 10:46:25,906 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-09-30 10:46:25,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-09-30 10:46:25,906 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:25,906 INFO L375 BasicCegarLoop]: trace histogram [128, 1, 1, 1] [2018-09-30 10:46:25,907 INFO L423 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:25,907 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:25,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1207649021, now seen corresponding path program 128 times [2018-09-30 10:46:25,907 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:25,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:25,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:25,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:46:25,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:26,924 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:26,924 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:26,924 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:26,933 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:46:27,028 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:46:27,028 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:27,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:27,262 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:27,283 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:27,283 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130] total 130 [2018-09-30 10:46:27,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-09-30 10:46:27,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-09-30 10:46:27,286 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:27,286 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 131 states. [2018-09-30 10:46:29,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:29,106 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-09-30 10:46:29,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-09-30 10:46:29,106 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 131 [2018-09-30 10:46:29,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:29,107 INFO L225 Difference]: With dead ends: 135 [2018-09-30 10:46:29,107 INFO L226 Difference]: Without dead ends: 133 [2018-09-30 10:46:29,107 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:29,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-09-30 10:46:29,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-09-30 10:46:29,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-09-30 10:46:29,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-09-30 10:46:29,110 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 131 [2018-09-30 10:46:29,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:29,110 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-09-30 10:46:29,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-09-30 10:46:29,111 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-09-30 10:46:29,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-09-30 10:46:29,111 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:29,111 INFO L375 BasicCegarLoop]: trace histogram [129, 1, 1, 1] [2018-09-30 10:46:29,111 INFO L423 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:29,112 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:29,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1217587820, now seen corresponding path program 129 times [2018-09-30 10:46:29,112 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:29,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:29,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:29,113 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:29,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:30,103 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:30,103 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:30,104 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:30,111 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:46:30,296 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2018-09-30 10:46:30,296 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:30,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:30,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:30,548 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:30,548 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131] total 131 [2018-09-30 10:46:30,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-09-30 10:46:30,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-09-30 10:46:30,550 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:30,550 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 132 states. [2018-09-30 10:46:32,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:32,252 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2018-09-30 10:46:32,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-09-30 10:46:32,252 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 132 [2018-09-30 10:46:32,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:32,253 INFO L225 Difference]: With dead ends: 136 [2018-09-30 10:46:32,253 INFO L226 Difference]: Without dead ends: 134 [2018-09-30 10:46:32,253 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:32,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-09-30 10:46:32,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-09-30 10:46:32,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-09-30 10:46:32,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-09-30 10:46:32,255 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 132 [2018-09-30 10:46:32,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:32,255 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-09-30 10:46:32,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-09-30 10:46:32,256 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-09-30 10:46:32,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-09-30 10:46:32,256 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:32,256 INFO L375 BasicCegarLoop]: trace histogram [130, 1, 1, 1] [2018-09-30 10:46:32,256 INFO L423 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:32,257 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:32,257 INFO L82 PathProgramCache]: Analyzing trace with hash -909481437, now seen corresponding path program 130 times [2018-09-30 10:46:32,257 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:32,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:32,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:32,258 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:32,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:33,428 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:33,428 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:33,436 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:46:33,536 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:46:33,536 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:33,540 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:33,772 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:33,792 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:33,793 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 132] total 132 [2018-09-30 10:46:33,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-09-30 10:46:33,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-09-30 10:46:33,795 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:33,795 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 133 states. [2018-09-30 10:46:35,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:35,391 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-09-30 10:46:35,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-09-30 10:46:35,391 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 133 [2018-09-30 10:46:35,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:35,392 INFO L225 Difference]: With dead ends: 137 [2018-09-30 10:46:35,392 INFO L226 Difference]: Without dead ends: 135 [2018-09-30 10:46:35,392 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:35,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-09-30 10:46:35,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-09-30 10:46:35,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-09-30 10:46:35,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-09-30 10:46:35,394 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 133 [2018-09-30 10:46:35,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:35,394 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-09-30 10:46:35,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-09-30 10:46:35,395 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-09-30 10:46:35,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-30 10:46:35,395 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:35,395 INFO L375 BasicCegarLoop]: trace histogram [131, 1, 1, 1] [2018-09-30 10:46:35,395 INFO L423 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:35,395 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:35,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1870848332, now seen corresponding path program 131 times [2018-09-30 10:46:35,395 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:35,395 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:35,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:35,396 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:35,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:36,334 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:36,334 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:36,342 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:46:36,525 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2018-09-30 10:46:36,525 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:36,530 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:36,782 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:36,803 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:36,804 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 133 [2018-09-30 10:46:36,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-09-30 10:46:36,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-09-30 10:46:36,805 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:36,805 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 134 states. [2018-09-30 10:46:38,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:38,289 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2018-09-30 10:46:38,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-09-30 10:46:38,289 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 134 [2018-09-30 10:46:38,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:38,290 INFO L225 Difference]: With dead ends: 138 [2018-09-30 10:46:38,290 INFO L226 Difference]: Without dead ends: 136 [2018-09-30 10:46:38,290 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:38,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-09-30 10:46:38,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-09-30 10:46:38,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-09-30 10:46:38,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-09-30 10:46:38,292 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 134 [2018-09-30 10:46:38,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:38,292 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-09-30 10:46:38,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-09-30 10:46:38,292 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-09-30 10:46:38,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-09-30 10:46:38,293 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:38,293 INFO L375 BasicCegarLoop]: trace histogram [132, 1, 1, 1] [2018-09-30 10:46:38,293 INFO L423 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:38,293 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:38,293 INFO L82 PathProgramCache]: Analyzing trace with hash -2133242045, now seen corresponding path program 132 times [2018-09-30 10:46:38,293 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:38,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:38,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:38,294 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:38,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:39,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 0 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:39,274 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:39,274 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:39,282 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:46:39,445 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-09-30 10:46:39,445 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:39,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:39,683 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 0 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:39,703 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:39,703 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 134] total 134 [2018-09-30 10:46:39,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-09-30 10:46:39,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-09-30 10:46:39,705 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:39,706 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 135 states. [2018-09-30 10:46:41,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:41,118 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-09-30 10:46:41,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-09-30 10:46:41,118 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 135 [2018-09-30 10:46:41,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:41,119 INFO L225 Difference]: With dead ends: 139 [2018-09-30 10:46:41,119 INFO L226 Difference]: Without dead ends: 137 [2018-09-30 10:46:41,119 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:41,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-09-30 10:46:41,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-09-30 10:46:41,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-09-30 10:46:41,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-09-30 10:46:41,121 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 135 [2018-09-30 10:46:41,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:41,121 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-09-30 10:46:41,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-09-30 10:46:41,121 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-09-30 10:46:41,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-09-30 10:46:41,122 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:41,122 INFO L375 BasicCegarLoop]: trace histogram [133, 1, 1, 1] [2018-09-30 10:46:41,122 INFO L423 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:41,122 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:41,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1705992148, now seen corresponding path program 133 times [2018-09-30 10:46:41,122 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:41,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:41,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:41,123 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:41,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:42,132 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:42,132 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:42,132 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:42,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:46:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:42,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:42,506 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:42,506 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 135] total 135 [2018-09-30 10:46:42,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-09-30 10:46:42,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-09-30 10:46:42,508 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:42,508 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 136 states. [2018-09-30 10:46:44,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:44,421 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2018-09-30 10:46:44,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-09-30 10:46:44,422 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 136 [2018-09-30 10:46:44,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:44,422 INFO L225 Difference]: With dead ends: 140 [2018-09-30 10:46:44,422 INFO L226 Difference]: Without dead ends: 138 [2018-09-30 10:46:44,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:44,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-09-30 10:46:44,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-09-30 10:46:44,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-09-30 10:46:44,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-09-30 10:46:44,424 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 136 [2018-09-30 10:46:44,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:44,424 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-09-30 10:46:44,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-09-30 10:46:44,424 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-09-30 10:46:44,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-09-30 10:46:44,425 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:44,425 INFO L375 BasicCegarLoop]: trace histogram [134, 1, 1, 1] [2018-09-30 10:46:44,425 INFO L423 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:44,425 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:44,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1346147229, now seen corresponding path program 134 times [2018-09-30 10:46:44,425 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:44,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:44,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:44,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:46:44,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:45,408 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:45,409 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:45,409 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:45,416 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:46:45,514 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:46:45,514 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:45,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:45,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:45,788 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:45,789 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 136] total 136 [2018-09-30 10:46:45,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-09-30 10:46:45,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-09-30 10:46:45,791 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:45,791 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 137 states. [2018-09-30 10:46:47,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:47,500 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-09-30 10:46:47,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-09-30 10:46:47,500 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 137 [2018-09-30 10:46:47,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:47,501 INFO L225 Difference]: With dead ends: 141 [2018-09-30 10:46:47,501 INFO L226 Difference]: Without dead ends: 139 [2018-09-30 10:46:47,501 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:47,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-09-30 10:46:47,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-09-30 10:46:47,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-30 10:46:47,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-09-30 10:46:47,504 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 137 [2018-09-30 10:46:47,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:47,504 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-09-30 10:46:47,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-09-30 10:46:47,505 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-09-30 10:46:47,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-30 10:46:47,505 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:47,505 INFO L375 BasicCegarLoop]: trace histogram [135, 1, 1, 1] [2018-09-30 10:46:47,506 INFO L423 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:47,506 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:47,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1219110668, now seen corresponding path program 135 times [2018-09-30 10:46:47,506 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:47,506 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:47,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:47,507 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:47,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:48,702 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:48,702 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:48,709 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:46:48,888 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2018-09-30 10:46:48,888 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:48,892 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:49,184 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:49,184 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137, 137] total 137 [2018-09-30 10:46:49,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-09-30 10:46:49,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-09-30 10:46:49,186 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:49,186 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 138 states. [2018-09-30 10:46:50,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:50,641 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2018-09-30 10:46:50,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-09-30 10:46:50,641 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 138 [2018-09-30 10:46:50,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:50,642 INFO L225 Difference]: With dead ends: 142 [2018-09-30 10:46:50,642 INFO L226 Difference]: Without dead ends: 140 [2018-09-30 10:46:50,642 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:50,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-09-30 10:46:50,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-09-30 10:46:50,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-09-30 10:46:50,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-09-30 10:46:50,644 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 138 [2018-09-30 10:46:50,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:50,645 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-09-30 10:46:50,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-09-30 10:46:50,645 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-09-30 10:46:50,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-09-30 10:46:50,645 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:50,646 INFO L375 BasicCegarLoop]: trace histogram [136, 1, 1, 1] [2018-09-30 10:46:50,646 INFO L423 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:50,646 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:50,646 INFO L82 PathProgramCache]: Analyzing trace with hash -862273149, now seen corresponding path program 136 times [2018-09-30 10:46:50,646 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:50,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:50,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:50,647 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:50,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:51,713 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:51,713 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:51,713 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:51,720 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:46:51,823 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:46:51,823 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:51,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:52,073 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:52,094 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:52,094 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 138] total 138 [2018-09-30 10:46:52,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-09-30 10:46:52,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-09-30 10:46:52,096 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:52,096 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 139 states. [2018-09-30 10:46:54,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:54,032 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-09-30 10:46:54,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-09-30 10:46:54,032 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 139 [2018-09-30 10:46:54,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:54,032 INFO L225 Difference]: With dead ends: 143 [2018-09-30 10:46:54,032 INFO L226 Difference]: Without dead ends: 141 [2018-09-30 10:46:54,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:54,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-09-30 10:46:54,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-09-30 10:46:54,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-09-30 10:46:54,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-09-30 10:46:54,034 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 139 [2018-09-30 10:46:54,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:54,035 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-09-30 10:46:54,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-09-30 10:46:54,035 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-09-30 10:46:54,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-30 10:46:54,035 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:54,035 INFO L375 BasicCegarLoop]: trace histogram [137, 1, 1, 1] [2018-09-30 10:46:54,035 INFO L423 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:54,035 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:54,035 INFO L82 PathProgramCache]: Analyzing trace with hash -960662036, now seen corresponding path program 137 times [2018-09-30 10:46:54,035 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:54,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:54,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:54,036 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:54,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:55,087 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:55,087 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:55,088 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:55,095 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:46:55,288 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 70 check-sat command(s) [2018-09-30 10:46:55,288 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:55,294 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:55,541 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:55,561 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:55,562 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139] total 139 [2018-09-30 10:46:55,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-09-30 10:46:55,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-09-30 10:46:55,564 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:55,564 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 140 states. [2018-09-30 10:46:57,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:57,182 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-09-30 10:46:57,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-09-30 10:46:57,182 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 140 [2018-09-30 10:46:57,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:57,183 INFO L225 Difference]: With dead ends: 144 [2018-09-30 10:46:57,183 INFO L226 Difference]: Without dead ends: 142 [2018-09-30 10:46:57,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:57,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-09-30 10:46:57,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-09-30 10:46:57,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-09-30 10:46:57,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-09-30 10:46:57,185 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 140 [2018-09-30 10:46:57,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:57,185 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-09-30 10:46:57,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-09-30 10:46:57,185 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-09-30 10:46:57,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-09-30 10:46:57,186 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:57,186 INFO L375 BasicCegarLoop]: trace histogram [138, 1, 1, 1] [2018-09-30 10:46:57,186 INFO L423 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:57,186 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:57,186 INFO L82 PathProgramCache]: Analyzing trace with hash 284249763, now seen corresponding path program 138 times [2018-09-30 10:46:57,186 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:57,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:57,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:57,187 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:57,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:58,335 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:58,335 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:58,342 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:46:58,525 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 70 check-sat command(s) [2018-09-30 10:46:58,525 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:58,530 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:58,780 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:58,801 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:58,801 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 140] total 140 [2018-09-30 10:46:58,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-09-30 10:46:58,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-09-30 10:46:58,804 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:58,804 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 141 states. [2018-09-30 10:47:00,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:00,906 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-09-30 10:47:00,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-09-30 10:47:00,906 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 141 [2018-09-30 10:47:00,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:00,907 INFO L225 Difference]: With dead ends: 145 [2018-09-30 10:47:00,907 INFO L226 Difference]: Without dead ends: 143 [2018-09-30 10:47:00,907 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:00,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-30 10:47:00,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-09-30 10:47:00,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-09-30 10:47:00,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-09-30 10:47:00,909 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 141 [2018-09-30 10:47:00,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:00,909 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-09-30 10:47:00,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-09-30 10:47:00,909 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-09-30 10:47:00,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-09-30 10:47:00,910 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:00,910 INFO L375 BasicCegarLoop]: trace histogram [139, 1, 1, 1] [2018-09-30 10:47:00,910 INFO L423 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:00,910 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:00,911 INFO L82 PathProgramCache]: Analyzing trace with hash 221809868, now seen corresponding path program 139 times [2018-09-30 10:47:00,911 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:00,911 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:00,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:00,911 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:00,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:01,976 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:47:01,976 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:01,976 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:01,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:47:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:02,093 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:02,349 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:47:02,369 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:02,369 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141, 141] total 141 [2018-09-30 10:47:02,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-09-30 10:47:02,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-09-30 10:47:02,371 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:02,371 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 142 states. [2018-09-30 10:47:04,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:04,008 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-09-30 10:47:04,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-09-30 10:47:04,008 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 142 [2018-09-30 10:47:04,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:04,008 INFO L225 Difference]: With dead ends: 146 [2018-09-30 10:47:04,008 INFO L226 Difference]: Without dead ends: 144 [2018-09-30 10:47:04,009 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:04,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-09-30 10:47:04,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-09-30 10:47:04,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-09-30 10:47:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-09-30 10:47:04,011 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 142 [2018-09-30 10:47:04,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:04,011 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-09-30 10:47:04,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-09-30 10:47:04,011 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-09-30 10:47:04,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-30 10:47:04,011 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:04,011 INFO L375 BasicCegarLoop]: trace histogram [140, 1, 1, 1] [2018-09-30 10:47:04,012 INFO L423 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:04,012 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:04,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1713826877, now seen corresponding path program 140 times [2018-09-30 10:47:04,012 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:04,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:04,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:04,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:47:04,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:05,098 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 9870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:47:05,099 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:05,099 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:05,106 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:47:05,213 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:47:05,213 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:05,218 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:05,470 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 9870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:47:05,490 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:05,491 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142, 142] total 142 [2018-09-30 10:47:05,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-09-30 10:47:05,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-09-30 10:47:05,493 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:05,493 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 143 states. [2018-09-30 10:47:07,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:07,606 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-09-30 10:47:07,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-09-30 10:47:07,607 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 143 [2018-09-30 10:47:07,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:07,607 INFO L225 Difference]: With dead ends: 147 [2018-09-30 10:47:07,607 INFO L226 Difference]: Without dead ends: 145 [2018-09-30 10:47:07,607 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:07,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-09-30 10:47:07,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-09-30 10:47:07,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-09-30 10:47:07,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-09-30 10:47:07,609 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 143 [2018-09-30 10:47:07,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:07,610 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-09-30 10:47:07,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-09-30 10:47:07,610 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-09-30 10:47:07,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-09-30 10:47:07,610 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:07,610 INFO L375 BasicCegarLoop]: trace histogram [141, 1, 1, 1] [2018-09-30 10:47:07,610 INFO L423 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:07,610 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:07,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1589023828, now seen corresponding path program 141 times [2018-09-30 10:47:07,611 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:07,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:07,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:07,611 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:07,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:08,806 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:47:08,806 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:08,806 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:08,814 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:47:08,994 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 72 check-sat command(s) [2018-09-30 10:47:08,994 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:08,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:09,256 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:47:09,277 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:09,277 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143, 143] total 143 [2018-09-30 10:47:09,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-09-30 10:47:09,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-09-30 10:47:09,280 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:09,280 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 144 states. [2018-09-30 10:47:10,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:10,974 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-09-30 10:47:10,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-09-30 10:47:10,974 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 144 [2018-09-30 10:47:10,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:10,975 INFO L225 Difference]: With dead ends: 148 [2018-09-30 10:47:10,975 INFO L226 Difference]: Without dead ends: 146 [2018-09-30 10:47:10,975 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:10,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-09-30 10:47:10,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-09-30 10:47:10,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-09-30 10:47:10,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-09-30 10:47:10,977 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 144 [2018-09-30 10:47:10,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:10,978 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-09-30 10:47:10,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-09-30 10:47:10,978 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-09-30 10:47:10,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-09-30 10:47:10,978 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:10,978 INFO L375 BasicCegarLoop]: trace histogram [142, 1, 1, 1] [2018-09-30 10:47:10,978 INFO L423 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:10,978 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:10,978 INFO L82 PathProgramCache]: Analyzing trace with hash -2015096605, now seen corresponding path program 142 times [2018-09-30 10:47:10,979 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:10,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:10,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:10,979 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:10,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:12,114 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 0 proven. 10153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:47:12,114 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:12,114 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:12,122 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:47:12,241 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:47:12,242 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:12,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:12,521 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 0 proven. 10153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:47:12,542 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:12,542 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144, 144] total 144 [2018-09-30 10:47:12,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-09-30 10:47:12,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-09-30 10:47:12,544 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:12,544 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 145 states. [2018-09-30 10:47:14,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:14,538 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-09-30 10:47:14,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-09-30 10:47:14,538 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 145 [2018-09-30 10:47:14,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:14,538 INFO L225 Difference]: With dead ends: 149 [2018-09-30 10:47:14,538 INFO L226 Difference]: Without dead ends: 147 [2018-09-30 10:47:14,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:14,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-09-30 10:47:14,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-09-30 10:47:14,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-09-30 10:47:14,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-09-30 10:47:14,541 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 145 [2018-09-30 10:47:14,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:14,541 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-09-30 10:47:14,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-09-30 10:47:14,541 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-09-30 10:47:14,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-30 10:47:14,541 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:14,541 INFO L375 BasicCegarLoop]: trace histogram [143, 1, 1, 1] [2018-09-30 10:47:14,541 INFO L423 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:14,542 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:14,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1956516492, now seen corresponding path program 143 times [2018-09-30 10:47:14,542 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:14,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:14,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:14,542 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:14,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:15,693 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:47:15,693 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:15,693 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:15,700 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:47:15,902 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2018-09-30 10:47:15,902 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:15,909 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:16,175 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:47:16,197 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:16,197 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145, 145] total 145 [2018-09-30 10:47:16,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-09-30 10:47:16,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-09-30 10:47:16,199 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:16,199 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 146 states. [2018-09-30 10:47:18,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:18,283 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2018-09-30 10:47:18,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-09-30 10:47:18,283 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 146 [2018-09-30 10:47:18,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:18,284 INFO L225 Difference]: With dead ends: 150 [2018-09-30 10:47:18,284 INFO L226 Difference]: Without dead ends: 148 [2018-09-30 10:47:18,284 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:18,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-09-30 10:47:18,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-09-30 10:47:18,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-09-30 10:47:18,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-09-30 10:47:18,286 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 146 [2018-09-30 10:47:18,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:18,286 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-09-30 10:47:18,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-09-30 10:47:18,286 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-09-30 10:47:18,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-09-30 10:47:18,287 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:18,287 INFO L375 BasicCegarLoop]: trace histogram [144, 1, 1, 1] [2018-09-30 10:47:18,287 INFO L423 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:18,287 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:18,287 INFO L82 PathProgramCache]: Analyzing trace with hash 522470915, now seen corresponding path program 144 times [2018-09-30 10:47:18,287 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:18,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:18,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:18,288 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:18,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:19,655 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 0 proven. 10440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:47:19,655 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:19,655 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:19,662 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:47:19,846 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-09-30 10:47:19,846 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:19,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:20,108 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 0 proven. 10440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:47:20,128 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:20,129 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146, 146] total 146 [2018-09-30 10:47:20,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-09-30 10:47:20,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-09-30 10:47:20,131 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:20,131 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 147 states. [2018-09-30 10:47:21,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:21,905 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-09-30 10:47:21,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-09-30 10:47:21,905 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 147 [2018-09-30 10:47:21,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:21,906 INFO L225 Difference]: With dead ends: 151 [2018-09-30 10:47:21,906 INFO L226 Difference]: Without dead ends: 149 [2018-09-30 10:47:21,906 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:21,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-09-30 10:47:21,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-09-30 10:47:21,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-09-30 10:47:21,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-09-30 10:47:21,908 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 147 [2018-09-30 10:47:21,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:21,908 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-09-30 10:47:21,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-09-30 10:47:21,908 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-09-30 10:47:21,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-30 10:47:21,909 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:21,909 INFO L375 BasicCegarLoop]: trace histogram [145, 1, 1, 1] [2018-09-30 10:47:21,909 INFO L423 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:21,909 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:21,909 INFO L82 PathProgramCache]: Analyzing trace with hash -983269012, now seen corresponding path program 145 times [2018-09-30 10:47:21,909 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:21,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:21,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:21,910 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:21,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:23,103 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:47:23,103 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:23,103 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:23,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:47:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:23,223 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:47:23,510 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:23,510 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147, 147] total 147 [2018-09-30 10:47:23,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-09-30 10:47:23,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-09-30 10:47:23,513 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:23,513 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 148 states. [2018-09-30 10:47:25,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:25,890 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2018-09-30 10:47:25,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-09-30 10:47:25,890 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 148 [2018-09-30 10:47:25,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:25,891 INFO L225 Difference]: With dead ends: 152 [2018-09-30 10:47:25,891 INFO L226 Difference]: Without dead ends: 150 [2018-09-30 10:47:25,891 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:25,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-09-30 10:47:25,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-09-30 10:47:25,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-09-30 10:47:25,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-09-30 10:47:25,893 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 148 [2018-09-30 10:47:25,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:25,893 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-09-30 10:47:25,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-09-30 10:47:25,893 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-09-30 10:47:25,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-09-30 10:47:25,894 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:25,894 INFO L375 BasicCegarLoop]: trace histogram [146, 1, 1, 1] [2018-09-30 10:47:25,894 INFO L423 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:25,894 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:25,894 INFO L82 PathProgramCache]: Analyzing trace with hash -416566493, now seen corresponding path program 146 times [2018-09-30 10:47:25,894 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:25,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:25,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:25,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:47:25,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:27,080 INFO L134 CoverageAnalysis]: Checked inductivity of 10731 backedges. 0 proven. 10731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:47:27,080 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:27,080 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:27,088 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:47:27,199 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:47:27,199 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:27,204 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:27,476 INFO L134 CoverageAnalysis]: Checked inductivity of 10731 backedges. 0 proven. 10731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:47:27,497 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:27,497 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148, 148] total 148 [2018-09-30 10:47:27,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-09-30 10:47:27,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-09-30 10:47:27,499 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:27,500 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 149 states. Received shutdown request... [2018-09-30 10:47:27,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-30 10:47:27,670 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-30 10:47:27,677 WARN L206 ceAbstractionStarter]: Timeout [2018-09-30 10:47:27,677 INFO L202 PluginConnector]: Adding new model const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 10:47:27 BoogieIcfgContainer [2018-09-30 10:47:27,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-30 10:47:27,678 INFO L168 Benchmark]: Toolchain (without parser) took 244259.47 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 362.3 MB). Free memory was 1.5 GB in the beginning and 882.5 MB in the end (delta: 592.6 MB). Peak memory consumption was 954.9 MB. Max. memory is 7.1 GB. [2018-09-30 10:47:27,680 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 10:47:27,680 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.83 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. [2018-09-30 10:47:27,680 INFO L168 Benchmark]: Boogie Preprocessor took 19.34 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. [2018-09-30 10:47:27,681 INFO L168 Benchmark]: RCFGBuilder took 300.36 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. [2018-09-30 10:47:27,681 INFO L168 Benchmark]: TraceAbstraction took 243893.70 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 362.3 MB). Free memory was 1.5 GB in the beginning and 882.5 MB in the end (delta: 571.4 MB). Peak memory consumption was 933.7 MB. Max. memory is 7.1 GB. [2018-09-30 10:47:27,684 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 39.83 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 19.34 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 300.36 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 243893.70 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 362.3 MB). Free memory was 1.5 GB in the beginning and 882.5 MB in the end (delta: 571.4 MB). Peak memory consumption was 933.7 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 constructing difference of abstraction (150states) and FLOYD_HOARE automaton (currently 26 states, 149 states before enhancement), while ReachableStatesComputation was computing reachable states (24 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 243.8s OverallTime, 147 OverallIterations, 146 TraceHistogramMax, 110.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 440 SDtfs, 0 SDslu, 6353 SDs, 0 SdLazy, 17253 SolverSat, 247 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22048 GetRequests, 11170 SyntacticMatches, 0 SemanticMatches, 10878 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=150occurred in iteration=146, 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: 0.3s AutomataMinimizationTime, 146 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.7s SsaConstructionTime, 10.4s SatisfiabilityAnalysisTime, 115.0s InterpolantComputationTime, 22341 NumberOfCodeBlocks, 22341 NumberOfCodeBlocksAsserted, 3018 NumberOfCheckSat, 22048 ConstructedInterpolants, 0 QuantifiedInterpolants, 6505330 SizeOfPredicates, 146 NumberOfNonLiveVariables, 67014 ConjunctsInSsa, 11023 ConjunctsInUnsatCore, 293 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1058792 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-0-2018-09-30_10-47-27-693.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-0-2018-09-30_10-47-27-693.csv Completed graceful shutdown