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/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-133090d [2018-10-04 09:37:03,245 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 09:37:03,247 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 09:37:03,259 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 09:37:03,259 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 09:37:03,260 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 09:37:03,262 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 09:37:03,263 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 09:37:03,265 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 09:37:03,266 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 09:37:03,267 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-04 09:37:03,292 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-04 09:37:03,309 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 09:37:03,310 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 09:37:03,310 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 09:37:03,311 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 09:37:03,313 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 09:37:03,314 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 09:37:03,314 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 09:37:03,314 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 09:37:03,314 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 09:37:03,314 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 09:37:03,315 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 09:37:03,315 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 09:37:03,315 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 09:37:03,315 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 09:37:03,315 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 09:37:03,315 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 09:37:03,317 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 09:37:03,317 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 09:37:03,317 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 09:37:03,318 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 09:37:03,318 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 09:37:03,318 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 09:37:03,318 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 09:37:03,318 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 09:37:03,318 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 09:37:03,319 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 09:37:03,319 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 09:37:03,319 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 09:37:03,320 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 09:37:03,320 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 09:37:03,320 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-04 09:37:03,372 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 09:37:03,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 09:37:03,393 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 09:37:03,395 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 09:37:03,395 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 09:37:03,396 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-10-04 09:37:03,396 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl' [2018-10-04 09:37:03,450 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 09:37:03,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 09:37:03,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 09:37:03,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 09:37:03,453 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 09:37:03,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:37:03" (1/1) ... [2018-10-04 09:37:03,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:37:03" (1/1) ... [2018-10-04 09:37:03,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 09:37:03,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 09:37:03,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 09:37:03,496 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 09:37:03,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:37:03" (1/1) ... [2018-10-04 09:37:03,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:37:03" (1/1) ... [2018-10-04 09:37:03,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:37:03" (1/1) ... [2018-10-04 09:37:03,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:37:03" (1/1) ... [2018-10-04 09:37:03,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:37:03" (1/1) ... [2018-10-04 09:37:03,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:37:03" (1/1) ... [2018-10-04 09:37:03,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:37:03" (1/1) ... [2018-10-04 09:37:03,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 09:37:03,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 09:37:03,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 09:37:03,517 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 09:37:03,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:37:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 09:37:03,582 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-04 09:37:03,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-04 09:37:03,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-04 09:37:03,939 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-04 09:37:03,939 INFO L202 PluginConnector]: Adding new model fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 09:37:03 BoogieIcfgContainer [2018-10-04 09:37:03,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 09:37:03,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 09:37:03,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 09:37:03,947 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 09:37:03,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:37:03" (1/2) ... [2018-10-04 09:37:03,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d737d61 and model type fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 09:37:03, skipping insertion in model container [2018-10-04 09:37:03,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 09:37:03" (2/2) ... [2018-10-04 09:37:03,951 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-10-04 09:37:03,963 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 09:37:03,975 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 09:37:04,041 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 09:37:04,042 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 09:37:04,042 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 09:37:04,042 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 09:37:04,042 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 09:37:04,043 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 09:37:04,043 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 09:37:04,043 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 09:37:04,043 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 09:37:04,062 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-10-04 09:37:04,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-04 09:37:04,078 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:04,081 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-04 09:37:04,082 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:04,093 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:04,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1807861163, now seen corresponding path program 1 times [2018-10-04 09:37:04,096 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:04,097 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:04,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:04,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:04,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:04,319 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 09:37:04,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 09:37:04,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 09:37:04,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 09:37:04,342 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:04,344 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-10-04 09:37:04,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:04,419 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2018-10-04 09:37:04,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 09:37:04,421 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-10-04 09:37:04,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:04,433 INFO L225 Difference]: With dead ends: 17 [2018-10-04 09:37:04,433 INFO L226 Difference]: Without dead ends: 10 [2018-10-04 09:37:04,436 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-04 09:37:04,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-04 09:37:04,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-04 09:37:04,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-04 09:37:04,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2018-10-04 09:37:04,475 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2018-10-04 09:37:04,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:04,476 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-10-04 09:37:04,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 09:37:04,476 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2018-10-04 09:37:04,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-04 09:37:04,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:04,477 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-10-04 09:37:04,477 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:04,477 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:04,477 INFO L82 PathProgramCache]: Analyzing trace with hash 89245487, now seen corresponding path program 1 times [2018-10-04 09:37:04,478 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:04,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:04,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:04,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:04,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:04,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:04,622 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:04,623 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:04,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:04,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:04,883 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:04,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-04 09:37:04,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 09:37:04,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 09:37:04,885 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:04,885 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 4 states. [2018-10-04 09:37:05,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:05,003 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2018-10-04 09:37:05,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 09:37:05,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-10-04 09:37:05,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:05,004 INFO L225 Difference]: With dead ends: 17 [2018-10-04 09:37:05,005 INFO L226 Difference]: Without dead ends: 12 [2018-10-04 09:37:05,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 2 [2018-10-04 09:37:05,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-04 09:37:05,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-04 09:37:05,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-04 09:37:05,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2018-10-04 09:37:05,009 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2018-10-04 09:37:05,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:05,010 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2018-10-04 09:37:05,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 09:37:05,010 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2018-10-04 09:37:05,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-04 09:37:05,011 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:05,011 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-10-04 09:37:05,011 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:05,011 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:05,011 INFO L82 PathProgramCache]: Analyzing trace with hash 2061989811, now seen corresponding path program 2 times [2018-10-04 09:37:05,012 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:05,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:05,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:05,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:05,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:05,161 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 09:37:05,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-04 09:37:05,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 09:37:05,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 09:37:05,163 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:05,163 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 5 states. [2018-10-04 09:37:05,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:05,291 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2018-10-04 09:37:05,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 09:37:05,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-10-04 09:37:05,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:05,292 INFO L225 Difference]: With dead ends: 32 [2018-10-04 09:37:05,292 INFO L226 Difference]: Without dead ends: 27 [2018-10-04 09:37:05,293 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 3 [2018-10-04 09:37:05,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-04 09:37:05,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2018-10-04 09:37:05,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-04 09:37:05,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2018-10-04 09:37:05,300 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2018-10-04 09:37:05,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:05,300 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2018-10-04 09:37:05,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 09:37:05,300 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2018-10-04 09:37:05,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-04 09:37:05,301 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:05,301 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-10-04 09:37:05,304 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:05,304 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:05,305 INFO L82 PathProgramCache]: Analyzing trace with hash 2062049393, now seen corresponding path program 1 times [2018-10-04 09:37:05,305 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:05,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:05,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:05,307 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:05,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:05,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-04 09:37:05,392 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 09:37:05,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-04 09:37:05,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 09:37:05,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 09:37:05,395 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:05,395 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 4 states. [2018-10-04 09:37:05,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:05,518 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2018-10-04 09:37:05,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 09:37:05,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-10-04 09:37:05,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:05,521 INFO L225 Difference]: With dead ends: 26 [2018-10-04 09:37:05,521 INFO L226 Difference]: Without dead ends: 24 [2018-10-04 09:37:05,521 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 3 [2018-10-04 09:37:05,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-04 09:37:05,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2018-10-04 09:37:05,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-04 09:37:05,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-10-04 09:37:05,528 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 11 [2018-10-04 09:37:05,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:05,528 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-10-04 09:37:05,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 09:37:05,529 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-10-04 09:37:05,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-04 09:37:05,530 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:05,530 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2018-10-04 09:37:05,530 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:05,530 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:05,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1980186676, now seen corresponding path program 1 times [2018-10-04 09:37:05,531 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:05,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:05,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:05,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:05,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:05,796 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:05,796 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:05,797 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:05,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:05,855 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:05,904 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:05,927 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:05,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-04 09:37:05,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 09:37:05,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 09:37:05,928 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:05,928 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2018-10-04 09:37:05,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:05,965 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2018-10-04 09:37:05,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 09:37:05,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-10-04 09:37:05,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:05,968 INFO L225 Difference]: With dead ends: 37 [2018-10-04 09:37:05,968 INFO L226 Difference]: Without dead ends: 23 [2018-10-04 09:37:05,969 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 3 [2018-10-04 09:37:05,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-04 09:37:05,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-04 09:37:05,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-04 09:37:05,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-10-04 09:37:05,977 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2018-10-04 09:37:05,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:05,977 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-10-04 09:37:05,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 09:37:05,978 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-10-04 09:37:05,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-04 09:37:05,978 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:05,979 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:05,979 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:05,979 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:05,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1317950664, now seen corresponding path program 2 times [2018-10-04 09:37:05,980 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:05,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:05,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:05,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:05,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:06,109 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:06,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:06,109 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:06,121 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:37:06,171 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:37:06,171 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:06,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:06,300 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:06,319 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:06,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-04 09:37:06,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-04 09:37:06,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-04 09:37:06,320 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:06,321 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2018-10-04 09:37:06,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:06,382 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2018-10-04 09:37:06,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-04 09:37:06,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-10-04 09:37:06,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:06,384 INFO L225 Difference]: With dead ends: 39 [2018-10-04 09:37:06,384 INFO L226 Difference]: Without dead ends: 25 [2018-10-04 09:37:06,385 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 4 [2018-10-04 09:37:06,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-04 09:37:06,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-04 09:37:06,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-04 09:37:06,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-10-04 09:37:06,390 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2018-10-04 09:37:06,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:06,391 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-10-04 09:37:06,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-04 09:37:06,391 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-10-04 09:37:06,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-04 09:37:06,392 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:06,392 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:06,392 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:06,393 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:06,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1142069956, now seen corresponding path program 3 times [2018-10-04 09:37:06,393 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:06,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:06,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:06,394 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:06,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:06,526 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:06,527 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:06,527 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:06,544 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:37:06,647 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-10-04 09:37:06,647 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:06,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:06,872 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:06,892 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:06,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-04 09:37:06,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 09:37:06,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 09:37:06,893 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:06,894 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 7 states. [2018-10-04 09:37:06,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:06,966 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-10-04 09:37:06,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 09:37:06,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2018-10-04 09:37:06,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:06,973 INFO L225 Difference]: With dead ends: 41 [2018-10-04 09:37:06,974 INFO L226 Difference]: Without dead ends: 27 [2018-10-04 09:37:06,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime 5 [2018-10-04 09:37:06,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-04 09:37:06,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-04 09:37:06,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-04 09:37:06,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-10-04 09:37:06,981 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2018-10-04 09:37:06,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:06,981 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-10-04 09:37:06,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 09:37:06,981 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-10-04 09:37:06,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-04 09:37:06,982 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:06,982 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:06,983 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:06,983 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:06,983 INFO L82 PathProgramCache]: Analyzing trace with hash -375565888, now seen corresponding path program 4 times [2018-10-04 09:37:06,983 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:06,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:06,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:06,984 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:06,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:07,091 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:07,091 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-04 09:37:07,107 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:07,152 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:37:07,152 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:07,154 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:07,207 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:07,233 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:07,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-04 09:37:07,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 09:37:07,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 09:37:07,234 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:07,234 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 8 states. [2018-10-04 09:37:07,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:07,274 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-10-04 09:37:07,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 09:37:07,274 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-10-04 09:37:07,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:07,275 INFO L225 Difference]: With dead ends: 43 [2018-10-04 09:37:07,275 INFO L226 Difference]: Without dead ends: 29 [2018-10-04 09:37:07,275 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6 [2018-10-04 09:37:07,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-04 09:37:07,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-04 09:37:07,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-04 09:37:07,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-10-04 09:37:07,281 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 26 [2018-10-04 09:37:07,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:07,281 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-10-04 09:37:07,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 09:37:07,282 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-10-04 09:37:07,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-04 09:37:07,283 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:07,283 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:07,283 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:07,283 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:07,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1465268668, now seen corresponding path program 5 times [2018-10-04 09:37:07,283 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:07,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:07,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:07,284 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:07,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:07,803 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:07,803 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:07,803 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:07,819 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:37:07,945 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-04 09:37:07,945 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:07,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:08,063 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:08,092 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:08,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-04 09:37:08,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-04 09:37:08,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-04 09:37:08,093 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:08,094 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 9 states. [2018-10-04 09:37:08,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:08,143 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2018-10-04 09:37:08,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 09:37:08,146 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-10-04 09:37:08,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:08,147 INFO L225 Difference]: With dead ends: 45 [2018-10-04 09:37:08,147 INFO L226 Difference]: Without dead ends: 31 [2018-10-04 09:37:08,147 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 7 [2018-10-04 09:37:08,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-04 09:37:08,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-04 09:37:08,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-04 09:37:08,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-10-04 09:37:08,152 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 28 [2018-10-04 09:37:08,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:08,152 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-10-04 09:37:08,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-04 09:37:08,153 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-10-04 09:37:08,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-04 09:37:08,153 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:08,154 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:08,154 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:08,154 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:08,154 INFO L82 PathProgramCache]: Analyzing trace with hash 980751032, now seen corresponding path program 6 times [2018-10-04 09:37:08,156 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:08,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:08,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:08,157 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:08,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:08,280 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:08,281 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:08,288 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:37:08,368 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-04 09:37:08,369 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:08,371 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:08,446 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:08,466 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:08,466 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-04 09:37:08,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-04 09:37:08,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-04 09:37:08,467 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:08,467 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 10 states. [2018-10-04 09:37:08,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:08,540 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2018-10-04 09:37:08,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-04 09:37:08,541 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2018-10-04 09:37:08,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:08,542 INFO L225 Difference]: With dead ends: 47 [2018-10-04 09:37:08,542 INFO L226 Difference]: Without dead ends: 33 [2018-10-04 09:37:08,542 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8 [2018-10-04 09:37:08,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-04 09:37:08,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-04 09:37:08,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-04 09:37:08,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-10-04 09:37:08,548 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 30 [2018-10-04 09:37:08,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:08,548 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-10-04 09:37:08,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-04 09:37:08,549 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-10-04 09:37:08,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-04 09:37:08,549 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:08,550 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:08,550 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:08,550 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:08,550 INFO L82 PathProgramCache]: Analyzing trace with hash -784229196, now seen corresponding path program 7 times [2018-10-04 09:37:08,550 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:08,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:08,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:08,551 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:08,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:08,722 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:08,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:08,722 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:08,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:08,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:09,065 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:09,088 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:09,088 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-04 09:37:09,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-04 09:37:09,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-04 09:37:09,090 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:09,090 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 11 states. [2018-10-04 09:37:09,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:09,142 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-10-04 09:37:09,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 09:37:09,146 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2018-10-04 09:37:09,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:09,147 INFO L225 Difference]: With dead ends: 49 [2018-10-04 09:37:09,147 INFO L226 Difference]: Without dead ends: 35 [2018-10-04 09:37:09,148 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.0s impTime 9 [2018-10-04 09:37:09,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-04 09:37:09,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-04 09:37:09,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-04 09:37:09,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-10-04 09:37:09,153 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 32 [2018-10-04 09:37:09,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:09,154 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-10-04 09:37:09,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-04 09:37:09,154 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-10-04 09:37:09,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-04 09:37:09,155 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:09,155 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:09,155 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:09,156 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:09,156 INFO L82 PathProgramCache]: Analyzing trace with hash -418146384, now seen corresponding path program 8 times [2018-10-04 09:37:09,156 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:09,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:09,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:09,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:09,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:09,347 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:09,347 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:09,347 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:09,357 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:37:09,384 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:37:09,385 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:09,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:09,447 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:09,468 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:09,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-04 09:37:09,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 09:37:09,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 09:37:09,468 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:09,469 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 12 states. [2018-10-04 09:37:09,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:09,500 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2018-10-04 09:37:09,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-04 09:37:09,501 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2018-10-04 09:37:09,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:09,501 INFO L225 Difference]: With dead ends: 51 [2018-10-04 09:37:09,501 INFO L226 Difference]: Without dead ends: 37 [2018-10-04 09:37:09,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 10 [2018-10-04 09:37:09,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-04 09:37:09,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-04 09:37:09,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-04 09:37:09,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-10-04 09:37:09,508 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 34 [2018-10-04 09:37:09,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:09,508 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-10-04 09:37:09,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 09:37:09,508 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-10-04 09:37:09,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-04 09:37:09,509 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:09,509 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:09,510 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:09,510 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:09,510 INFO L82 PathProgramCache]: Analyzing trace with hash -799882324, now seen corresponding path program 9 times [2018-10-04 09:37:09,510 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:09,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:09,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:09,511 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:09,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:09,714 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:09,714 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:09,714 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:09,724 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:37:09,778 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-10-04 09:37:09,778 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:09,782 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:09,919 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:09,939 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:09,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-04 09:37:09,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-04 09:37:09,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-04 09:37:09,940 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:09,940 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 13 states. [2018-10-04 09:37:10,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:10,131 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2018-10-04 09:37:10,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 09:37:10,135 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2018-10-04 09:37:10,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:10,136 INFO L225 Difference]: With dead ends: 53 [2018-10-04 09:37:10,136 INFO L226 Difference]: Without dead ends: 39 [2018-10-04 09:37:10,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 11 [2018-10-04 09:37:10,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-04 09:37:10,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-04 09:37:10,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-04 09:37:10,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2018-10-04 09:37:10,147 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 36 [2018-10-04 09:37:10,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:10,150 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2018-10-04 09:37:10,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-04 09:37:10,150 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2018-10-04 09:37:10,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-04 09:37:10,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:10,151 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:10,151 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:10,152 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:10,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1719066792, now seen corresponding path program 10 times [2018-10-04 09:37:10,152 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:10,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:10,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:10,153 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:10,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:10,360 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:10,360 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:10,360 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:10,368 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:37:10,397 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:37:10,397 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:10,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:10,580 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:10,600 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:10,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-04 09:37:10,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 09:37:10,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 09:37:10,601 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:10,601 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 14 states. [2018-10-04 09:37:10,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:10,684 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2018-10-04 09:37:10,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-04 09:37:10,685 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2018-10-04 09:37:10,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:10,685 INFO L225 Difference]: With dead ends: 55 [2018-10-04 09:37:10,686 INFO L226 Difference]: Without dead ends: 41 [2018-10-04 09:37:10,686 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 12 [2018-10-04 09:37:10,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-04 09:37:10,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-04 09:37:10,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-04 09:37:10,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-10-04 09:37:10,693 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 38 [2018-10-04 09:37:10,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:10,693 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-10-04 09:37:10,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 09:37:10,693 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-10-04 09:37:10,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-04 09:37:10,694 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:10,694 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:10,694 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:10,695 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:10,695 INFO L82 PathProgramCache]: Analyzing trace with hash 67612324, now seen corresponding path program 11 times [2018-10-04 09:37:10,695 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:10,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:10,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:10,696 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:10,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:10,906 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:10,906 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:10,940 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:37:11,034 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-04 09:37:11,035 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:11,038 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:11,163 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:11,183 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:11,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-04 09:37:11,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-04 09:37:11,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-04 09:37:11,183 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:11,184 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 15 states. [2018-10-04 09:37:11,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:11,226 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2018-10-04 09:37:11,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 09:37:11,226 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2018-10-04 09:37:11,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:11,227 INFO L225 Difference]: With dead ends: 57 [2018-10-04 09:37:11,227 INFO L226 Difference]: Without dead ends: 43 [2018-10-04 09:37:11,228 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 13 [2018-10-04 09:37:11,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-04 09:37:11,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-04 09:37:11,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-04 09:37:11,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2018-10-04 09:37:11,234 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 40 [2018-10-04 09:37:11,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:11,235 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2018-10-04 09:37:11,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-04 09:37:11,235 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2018-10-04 09:37:11,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-04 09:37:11,236 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:11,236 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:11,236 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:11,236 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:11,236 INFO L82 PathProgramCache]: Analyzing trace with hash -2137199200, now seen corresponding path program 12 times [2018-10-04 09:37:11,236 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:11,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:11,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:11,238 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:11,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:11,654 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:11,655 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:11,655 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:11,664 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:37:11,703 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2018-10-04 09:37:11,703 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:11,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:11,805 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:11,826 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:11,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-04 09:37:11,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 09:37:11,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 09:37:11,827 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:11,827 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 16 states. [2018-10-04 09:37:12,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:12,118 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2018-10-04 09:37:12,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-04 09:37:12,119 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2018-10-04 09:37:12,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:12,120 INFO L225 Difference]: With dead ends: 59 [2018-10-04 09:37:12,120 INFO L226 Difference]: Without dead ends: 45 [2018-10-04 09:37:12,121 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 14 [2018-10-04 09:37:12,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-04 09:37:12,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-04 09:37:12,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-04 09:37:12,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2018-10-04 09:37:12,125 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 42 [2018-10-04 09:37:12,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:12,126 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2018-10-04 09:37:12,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 09:37:12,126 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2018-10-04 09:37:12,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-04 09:37:12,127 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:12,127 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:12,128 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:12,128 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:12,128 INFO L82 PathProgramCache]: Analyzing trace with hash 752770460, now seen corresponding path program 13 times [2018-10-04 09:37:12,128 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:12,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:12,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:12,129 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:12,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:12,529 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:12,529 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:12,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:12,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:12,928 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:12,949 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:12,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-04 09:37:12,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-04 09:37:12,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-04 09:37:12,950 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:12,950 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 17 states. [2018-10-04 09:37:13,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:13,023 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2018-10-04 09:37:13,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-04 09:37:13,024 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2018-10-04 09:37:13,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:13,025 INFO L225 Difference]: With dead ends: 61 [2018-10-04 09:37:13,025 INFO L226 Difference]: Without dead ends: 47 [2018-10-04 09:37:13,025 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.2s impTime 15 [2018-10-04 09:37:13,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-04 09:37:13,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-04 09:37:13,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-04 09:37:13,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2018-10-04 09:37:13,032 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 44 [2018-10-04 09:37:13,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:13,032 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2018-10-04 09:37:13,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-04 09:37:13,033 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2018-10-04 09:37:13,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-04 09:37:13,034 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:13,034 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:13,034 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:13,034 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:13,034 INFO L82 PathProgramCache]: Analyzing trace with hash -830226792, now seen corresponding path program 14 times [2018-10-04 09:37:13,035 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:13,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:13,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:13,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:13,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:13,249 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:13,250 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:13,250 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:13,264 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:37:13,298 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:37:13,299 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:13,301 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:13,383 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:13,403 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:13,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-04 09:37:13,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-04 09:37:13,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-04 09:37:13,404 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:13,404 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 18 states. [2018-10-04 09:37:13,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:13,492 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2018-10-04 09:37:13,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-04 09:37:13,493 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 46 [2018-10-04 09:37:13,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:13,494 INFO L225 Difference]: With dead ends: 63 [2018-10-04 09:37:13,494 INFO L226 Difference]: Without dead ends: 49 [2018-10-04 09:37:13,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 16 [2018-10-04 09:37:13,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-04 09:37:13,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-04 09:37:13,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-04 09:37:13,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2018-10-04 09:37:13,500 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 46 [2018-10-04 09:37:13,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:13,500 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2018-10-04 09:37:13,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-04 09:37:13,501 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2018-10-04 09:37:13,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-04 09:37:13,501 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:13,502 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:13,502 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:13,502 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:13,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1672163180, now seen corresponding path program 15 times [2018-10-04 09:37:13,502 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:13,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:13,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:13,503 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:13,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:13,788 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:13,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:13,789 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:13,796 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:37:13,866 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2018-10-04 09:37:13,866 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:13,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:14,256 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:14,276 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:14,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-04 09:37:14,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-04 09:37:14,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-04 09:37:14,277 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:14,277 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 19 states. [2018-10-04 09:37:14,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:14,396 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2018-10-04 09:37:14,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-04 09:37:14,397 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2018-10-04 09:37:14,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:14,398 INFO L225 Difference]: With dead ends: 65 [2018-10-04 09:37:14,398 INFO L226 Difference]: Without dead ends: 51 [2018-10-04 09:37:14,398 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.1s impTime 17 [2018-10-04 09:37:14,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-04 09:37:14,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-04 09:37:14,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-04 09:37:14,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-10-04 09:37:14,402 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 48 [2018-10-04 09:37:14,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:14,402 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-10-04 09:37:14,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-04 09:37:14,402 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-10-04 09:37:14,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-04 09:37:14,403 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:14,403 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:14,404 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:14,404 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:14,404 INFO L82 PathProgramCache]: Analyzing trace with hash 975786896, now seen corresponding path program 16 times [2018-10-04 09:37:14,404 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:14,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:14,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:14,405 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:14,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:14,736 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:14,737 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:14,737 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:14,746 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:37:14,777 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:37:14,777 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:14,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:14,861 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:14,881 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:14,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-04 09:37:14,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-04 09:37:14,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-04 09:37:14,882 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:14,882 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 20 states. [2018-10-04 09:37:14,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:14,962 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2018-10-04 09:37:14,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-04 09:37:14,962 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 50 [2018-10-04 09:37:14,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:14,963 INFO L225 Difference]: With dead ends: 67 [2018-10-04 09:37:14,963 INFO L226 Difference]: Without dead ends: 53 [2018-10-04 09:37:14,963 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 18 [2018-10-04 09:37:14,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-04 09:37:14,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-04 09:37:14,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-04 09:37:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2018-10-04 09:37:14,968 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 50 [2018-10-04 09:37:14,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:14,968 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2018-10-04 09:37:14,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-04 09:37:14,969 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2018-10-04 09:37:14,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-04 09:37:14,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:14,969 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:14,970 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:14,970 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:14,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1259796596, now seen corresponding path program 17 times [2018-10-04 09:37:14,970 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:14,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:14,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:14,971 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:14,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:15,470 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:15,475 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:15,476 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:15,476 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:15,483 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:37:15,532 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-04 09:37:15,532 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:15,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:15,645 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:15,666 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:15,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-04 09:37:15,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-04 09:37:15,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-04 09:37:15,667 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:15,667 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 21 states. [2018-10-04 09:37:15,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:15,783 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2018-10-04 09:37:15,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-04 09:37:15,784 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 52 [2018-10-04 09:37:15,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:15,785 INFO L225 Difference]: With dead ends: 69 [2018-10-04 09:37:15,785 INFO L226 Difference]: Without dead ends: 55 [2018-10-04 09:37:15,786 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 6 [2018-10-04 09:37:15,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-04 09:37:15,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-04 09:37:15,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-04 09:37:15,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2018-10-04 09:37:15,791 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 52 [2018-10-04 09:37:15,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:15,791 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2018-10-04 09:37:15,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-04 09:37:15,791 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2018-10-04 09:37:15,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-04 09:37:15,792 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:15,792 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:15,792 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:15,792 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:15,792 INFO L82 PathProgramCache]: Analyzing trace with hash 2123082888, now seen corresponding path program 18 times [2018-10-04 09:37:15,793 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:15,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:15,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:15,794 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:15,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:16,945 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:17,003 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:17,003 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:17,003 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:17,011 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:37:17,059 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2018-10-04 09:37:17,059 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:17,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:17,163 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:17,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-04 09:37:17,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-04 09:37:17,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-04 09:37:17,164 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:17,164 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 22 states. [2018-10-04 09:37:17,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:17,255 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2018-10-04 09:37:17,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-04 09:37:17,258 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 54 [2018-10-04 09:37:17,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:17,259 INFO L225 Difference]: With dead ends: 71 [2018-10-04 09:37:17,259 INFO L226 Difference]: Without dead ends: 57 [2018-10-04 09:37:17,259 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 7 [2018-10-04 09:37:17,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-04 09:37:17,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-04 09:37:17,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-04 09:37:17,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2018-10-04 09:37:17,265 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 54 [2018-10-04 09:37:17,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:17,265 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2018-10-04 09:37:17,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-04 09:37:17,265 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2018-10-04 09:37:17,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-04 09:37:17,266 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:17,266 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:17,267 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:17,267 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:17,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1780023940, now seen corresponding path program 19 times [2018-10-04 09:37:17,267 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:17,267 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:17,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:17,268 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:17,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:17,893 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:17,941 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:17,941 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:17,941 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:17,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:17,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:18,110 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:18,130 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:18,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-04 09:37:18,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-04 09:37:18,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-04 09:37:18,131 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:18,131 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 23 states. [2018-10-04 09:37:18,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:18,235 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2018-10-04 09:37:18,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-04 09:37:18,239 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 56 [2018-10-04 09:37:18,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:18,239 INFO L225 Difference]: With dead ends: 73 [2018-10-04 09:37:18,239 INFO L226 Difference]: Without dead ends: 59 [2018-10-04 09:37:18,239 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 8 [2018-10-04 09:37:18,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-04 09:37:18,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-04 09:37:18,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-04 09:37:18,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2018-10-04 09:37:18,245 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 56 [2018-10-04 09:37:18,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:18,245 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2018-10-04 09:37:18,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-04 09:37:18,245 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2018-10-04 09:37:18,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-04 09:37:18,247 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:18,247 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:18,247 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:18,248 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:18,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1482110592, now seen corresponding path program 20 times [2018-10-04 09:37:18,248 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:18,248 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:18,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:18,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:18,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:18,830 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:18,848 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:18,848 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:18,858 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:37:18,908 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:37:18,908 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:18,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:19,154 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:19,174 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:19,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-04 09:37:19,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-04 09:37:19,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-04 09:37:19,175 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:19,175 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 24 states. [2018-10-04 09:37:19,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:19,213 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2018-10-04 09:37:19,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-04 09:37:19,213 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 58 [2018-10-04 09:37:19,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:19,214 INFO L225 Difference]: With dead ends: 75 [2018-10-04 09:37:19,214 INFO L226 Difference]: Without dead ends: 61 [2018-10-04 09:37:19,215 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 9 [2018-10-04 09:37:19,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-04 09:37:19,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-04 09:37:19,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-04 09:37:19,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2018-10-04 09:37:19,219 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 58 [2018-10-04 09:37:19,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:19,219 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2018-10-04 09:37:19,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-04 09:37:19,219 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2018-10-04 09:37:19,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-04 09:37:19,220 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:19,220 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:19,220 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:19,220 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:19,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1067269764, now seen corresponding path program 21 times [2018-10-04 09:37:19,220 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:19,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:19,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:19,221 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:19,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:19,489 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:19,547 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:19,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:19,547 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:19,554 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:37:19,605 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2018-10-04 09:37:19,606 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:19,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:19,734 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:19,754 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:19,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-04 09:37:19,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-04 09:37:19,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-04 09:37:19,754 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:19,754 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 25 states. [2018-10-04 09:37:19,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:19,789 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2018-10-04 09:37:19,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-04 09:37:19,789 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 60 [2018-10-04 09:37:19,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:19,790 INFO L225 Difference]: With dead ends: 77 [2018-10-04 09:37:19,790 INFO L226 Difference]: Without dead ends: 63 [2018-10-04 09:37:19,790 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 10 [2018-10-04 09:37:19,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-04 09:37:19,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-04 09:37:19,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-04 09:37:19,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2018-10-04 09:37:19,794 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 60 [2018-10-04 09:37:19,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:19,794 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2018-10-04 09:37:19,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-04 09:37:19,794 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2018-10-04 09:37:19,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-04 09:37:19,794 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:19,795 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:19,795 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:19,795 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:19,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1837192584, now seen corresponding path program 22 times [2018-10-04 09:37:19,795 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:19,795 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:19,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:19,796 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:19,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:20,089 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:20,169 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:20,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:20,170 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:20,178 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:37:20,230 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:37:20,230 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:20,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:20,346 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:20,375 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:20,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-04 09:37:20,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-04 09:37:20,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-04 09:37:20,376 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:20,376 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 26 states. [2018-10-04 09:37:20,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:20,432 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2018-10-04 09:37:20,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-04 09:37:20,433 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 62 [2018-10-04 09:37:20,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:20,434 INFO L225 Difference]: With dead ends: 79 [2018-10-04 09:37:20,434 INFO L226 Difference]: Without dead ends: 65 [2018-10-04 09:37:20,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 11 [2018-10-04 09:37:20,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-04 09:37:20,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-04 09:37:20,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-04 09:37:20,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2018-10-04 09:37:20,439 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 62 [2018-10-04 09:37:20,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:20,439 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2018-10-04 09:37:20,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-04 09:37:20,439 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2018-10-04 09:37:20,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-04 09:37:20,439 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:20,439 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:20,440 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:20,440 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:20,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1296319604, now seen corresponding path program 23 times [2018-10-04 09:37:20,440 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:20,440 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:20,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:20,441 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:20,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:21,055 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:21,159 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:21,160 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:21,160 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:21,167 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:37:21,223 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-04 09:37:21,223 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:21,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:21,365 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:21,386 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:21,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-04 09:37:21,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-04 09:37:21,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-04 09:37:21,387 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:21,387 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 27 states. [2018-10-04 09:37:21,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:21,470 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2018-10-04 09:37:21,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-04 09:37:21,470 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 64 [2018-10-04 09:37:21,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:21,471 INFO L225 Difference]: With dead ends: 81 [2018-10-04 09:37:21,471 INFO L226 Difference]: Without dead ends: 67 [2018-10-04 09:37:21,471 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 12 [2018-10-04 09:37:21,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-04 09:37:21,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-04 09:37:21,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-04 09:37:21,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2018-10-04 09:37:21,476 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 64 [2018-10-04 09:37:21,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:21,477 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2018-10-04 09:37:21,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-04 09:37:21,477 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2018-10-04 09:37:21,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-04 09:37:21,477 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:21,478 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:21,478 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:21,478 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:21,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1829457776, now seen corresponding path program 24 times [2018-10-04 09:37:21,478 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:21,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:21,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:21,479 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:21,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:21,957 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:22,058 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:22,058 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:22,066 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:37:22,123 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2018-10-04 09:37:22,124 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:22,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:22,218 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:22,240 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:22,240 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-04 09:37:22,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-04 09:37:22,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-04 09:37:22,240 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:22,241 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 28 states. [2018-10-04 09:37:22,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:22,342 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2018-10-04 09:37:22,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-04 09:37:22,342 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 66 [2018-10-04 09:37:22,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:22,343 INFO L225 Difference]: With dead ends: 83 [2018-10-04 09:37:22,343 INFO L226 Difference]: Without dead ends: 69 [2018-10-04 09:37:22,343 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 13 [2018-10-04 09:37:22,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-04 09:37:22,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-04 09:37:22,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-04 09:37:22,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2018-10-04 09:37:22,346 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 66 [2018-10-04 09:37:22,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:22,347 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2018-10-04 09:37:22,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-04 09:37:22,347 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2018-10-04 09:37:22,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-04 09:37:22,348 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:22,348 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:22,348 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:22,348 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:22,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1220834452, now seen corresponding path program 25 times [2018-10-04 09:37:22,349 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:22,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:22,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:22,349 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:22,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:22,584 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:22,678 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:22,678 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:22,678 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:22,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:22,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:22,834 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:22,855 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:22,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-04 09:37:22,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-04 09:37:22,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-04 09:37:22,856 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:22,856 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 29 states. [2018-10-04 09:37:22,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:22,941 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2018-10-04 09:37:22,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-04 09:37:22,942 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 68 [2018-10-04 09:37:22,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:22,943 INFO L225 Difference]: With dead ends: 85 [2018-10-04 09:37:22,943 INFO L226 Difference]: Without dead ends: 71 [2018-10-04 09:37:22,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 14 [2018-10-04 09:37:22,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-04 09:37:22,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-04 09:37:22,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-04 09:37:22,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2018-10-04 09:37:22,949 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 68 [2018-10-04 09:37:22,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:22,949 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2018-10-04 09:37:22,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-04 09:37:22,950 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2018-10-04 09:37:22,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-04 09:37:22,950 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:22,950 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:22,951 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:22,951 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:22,951 INFO L82 PathProgramCache]: Analyzing trace with hash 910997608, now seen corresponding path program 26 times [2018-10-04 09:37:22,951 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:22,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:22,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:22,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:22,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:23,279 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:23,385 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:23,385 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:23,413 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:37:23,460 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:37:23,460 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:23,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:23,601 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:23,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-04 09:37:23,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-04 09:37:23,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-04 09:37:23,602 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:23,603 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 30 states. [2018-10-04 09:37:23,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:23,647 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2018-10-04 09:37:23,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-04 09:37:23,648 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 70 [2018-10-04 09:37:23,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:23,649 INFO L225 Difference]: With dead ends: 87 [2018-10-04 09:37:23,649 INFO L226 Difference]: Without dead ends: 73 [2018-10-04 09:37:23,649 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 15 [2018-10-04 09:37:23,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-04 09:37:23,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-04 09:37:23,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-04 09:37:23,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2018-10-04 09:37:23,654 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 70 [2018-10-04 09:37:23,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:23,654 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2018-10-04 09:37:23,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-04 09:37:23,654 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2018-10-04 09:37:23,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-04 09:37:23,655 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:23,655 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:23,655 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:23,655 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:23,655 INFO L82 PathProgramCache]: Analyzing trace with hash 902207076, now seen corresponding path program 27 times [2018-10-04 09:37:23,656 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:23,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:23,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:23,656 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:23,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:24,667 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:24,790 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:24,791 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:24,791 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:24,799 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:37:24,863 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2018-10-04 09:37:24,863 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:24,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:24,981 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:25,001 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:25,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-04 09:37:25,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-04 09:37:25,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-04 09:37:25,001 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:25,002 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 31 states. [2018-10-04 09:37:25,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:25,073 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2018-10-04 09:37:25,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-04 09:37:25,073 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 72 [2018-10-04 09:37:25,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:25,074 INFO L225 Difference]: With dead ends: 89 [2018-10-04 09:37:25,074 INFO L226 Difference]: Without dead ends: 75 [2018-10-04 09:37:25,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 16 [2018-10-04 09:37:25,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-04 09:37:25,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-04 09:37:25,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-04 09:37:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2018-10-04 09:37:25,080 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 72 [2018-10-04 09:37:25,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:25,081 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2018-10-04 09:37:25,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-04 09:37:25,081 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2018-10-04 09:37:25,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-04 09:37:25,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:25,081 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:25,082 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:25,082 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:25,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1044440416, now seen corresponding path program 28 times [2018-10-04 09:37:25,082 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:25,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:25,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:25,083 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:25,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:25,365 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:25,561 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:25,562 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:25,562 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:25,571 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:37:25,617 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:37:25,617 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:25,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:25,777 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:25,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-04 09:37:25,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-04 09:37:25,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-04 09:37:25,778 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:25,778 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 32 states. [2018-10-04 09:37:25,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:25,854 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2018-10-04 09:37:25,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-04 09:37:25,855 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 74 [2018-10-04 09:37:25,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:25,855 INFO L225 Difference]: With dead ends: 91 [2018-10-04 09:37:25,856 INFO L226 Difference]: Without dead ends: 77 [2018-10-04 09:37:25,856 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 17 [2018-10-04 09:37:25,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-04 09:37:25,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-04 09:37:25,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-04 09:37:25,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2018-10-04 09:37:25,860 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 74 [2018-10-04 09:37:25,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:25,860 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2018-10-04 09:37:25,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-04 09:37:25,860 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2018-10-04 09:37:25,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-04 09:37:25,860 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:25,860 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:25,861 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:25,861 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:25,861 INFO L82 PathProgramCache]: Analyzing trace with hash 291726684, now seen corresponding path program 29 times [2018-10-04 09:37:25,861 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:25,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:25,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:25,862 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:25,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:26,521 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:27,044 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:27,044 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:27,044 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:27,051 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:37:27,115 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-04 09:37:27,116 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:27,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:27,226 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:27,247 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:27,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-04 09:37:27,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-04 09:37:27,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-04 09:37:27,247 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:27,248 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 33 states. [2018-10-04 09:37:27,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:27,336 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2018-10-04 09:37:27,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-04 09:37:27,336 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 76 [2018-10-04 09:37:27,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:27,337 INFO L225 Difference]: With dead ends: 93 [2018-10-04 09:37:27,337 INFO L226 Difference]: Without dead ends: 79 [2018-10-04 09:37:27,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 18 [2018-10-04 09:37:27,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-04 09:37:27,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-04 09:37:27,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-04 09:37:27,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2018-10-04 09:37:27,341 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 76 [2018-10-04 09:37:27,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:27,341 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2018-10-04 09:37:27,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-04 09:37:27,341 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2018-10-04 09:37:27,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-04 09:37:27,341 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:27,341 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:27,342 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:27,342 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:27,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1511664040, now seen corresponding path program 30 times [2018-10-04 09:37:27,342 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:27,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:27,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:27,343 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:27,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:27,663 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:27,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:27,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:27,913 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:27,928 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:37:28,005 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2018-10-04 09:37:28,005 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:28,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:28,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:28,140 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:28,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-04 09:37:28,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-04 09:37:28,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-04 09:37:28,142 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:28,142 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 34 states. [2018-10-04 09:37:28,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:28,239 INFO L93 Difference]: Finished difference Result 95 states and 99 transitions. [2018-10-04 09:37:28,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-04 09:37:28,240 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 78 [2018-10-04 09:37:28,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:28,240 INFO L225 Difference]: With dead ends: 95 [2018-10-04 09:37:28,241 INFO L226 Difference]: Without dead ends: 81 [2018-10-04 09:37:28,241 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 19 [2018-10-04 09:37:28,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-04 09:37:28,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-04 09:37:28,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-04 09:37:28,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2018-10-04 09:37:28,244 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 78 [2018-10-04 09:37:28,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:28,245 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2018-10-04 09:37:28,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-04 09:37:28,245 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2018-10-04 09:37:28,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-04 09:37:28,245 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:28,246 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:28,246 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:28,246 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:28,246 INFO L82 PathProgramCache]: Analyzing trace with hash 596637780, now seen corresponding path program 31 times [2018-10-04 09:37:28,246 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:28,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:28,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:28,247 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:28,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:28,544 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:28,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:28,899 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:28,899 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:28,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:28,958 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:29,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:29,107 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:29,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-04 09:37:29,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-04 09:37:29,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-04 09:37:29,108 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:29,108 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 35 states. [2018-10-04 09:37:29,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:29,210 INFO L93 Difference]: Finished difference Result 97 states and 101 transitions. [2018-10-04 09:37:29,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-04 09:37:29,210 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 80 [2018-10-04 09:37:29,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:29,211 INFO L225 Difference]: With dead ends: 97 [2018-10-04 09:37:29,211 INFO L226 Difference]: Without dead ends: 83 [2018-10-04 09:37:29,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 20 [2018-10-04 09:37:29,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-04 09:37:29,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-04 09:37:29,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-04 09:37:29,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2018-10-04 09:37:29,216 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 80 [2018-10-04 09:37:29,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:29,217 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2018-10-04 09:37:29,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-04 09:37:29,217 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2018-10-04 09:37:29,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-04 09:37:29,217 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:29,217 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:29,218 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:29,218 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:29,218 INFO L82 PathProgramCache]: Analyzing trace with hash -549876912, now seen corresponding path program 32 times [2018-10-04 09:37:29,218 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:29,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:29,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:29,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:29,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:29,653 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:29,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:29,804 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:29,804 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:29,813 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:37:29,867 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:37:29,867 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:29,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:30,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:30,096 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:30,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-04 09:37:30,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-04 09:37:30,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-04 09:37:30,097 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:30,097 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 36 states. [2018-10-04 09:37:30,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:30,260 INFO L93 Difference]: Finished difference Result 99 states and 103 transitions. [2018-10-04 09:37:30,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-04 09:37:30,263 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 82 [2018-10-04 09:37:30,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:30,264 INFO L225 Difference]: With dead ends: 99 [2018-10-04 09:37:30,264 INFO L226 Difference]: Without dead ends: 85 [2018-10-04 09:37:30,264 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 21 [2018-10-04 09:37:30,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-04 09:37:30,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-04 09:37:30,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-04 09:37:30,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2018-10-04 09:37:30,269 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 82 [2018-10-04 09:37:30,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:30,270 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2018-10-04 09:37:30,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-04 09:37:30,270 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2018-10-04 09:37:30,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-04 09:37:30,270 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:30,270 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:30,271 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:30,271 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:30,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1456099148, now seen corresponding path program 33 times [2018-10-04 09:37:30,271 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:30,271 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:30,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:30,272 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:30,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:30,784 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:31,064 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:31,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:31,071 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:31,071 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:31,079 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:37:31,157 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2018-10-04 09:37:31,157 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:31,160 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:31,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:31,305 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:31,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-04 09:37:31,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-04 09:37:31,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-04 09:37:31,306 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:31,306 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 37 states. [2018-10-04 09:37:31,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:31,408 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2018-10-04 09:37:31,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-04 09:37:31,408 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 84 [2018-10-04 09:37:31,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:31,409 INFO L225 Difference]: With dead ends: 101 [2018-10-04 09:37:31,409 INFO L226 Difference]: Without dead ends: 87 [2018-10-04 09:37:31,410 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 7 [2018-10-04 09:37:31,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-04 09:37:31,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-04 09:37:31,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-04 09:37:31,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2018-10-04 09:37:31,418 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 84 [2018-10-04 09:37:31,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:31,418 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2018-10-04 09:37:31,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-04 09:37:31,418 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2018-10-04 09:37:31,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-04 09:37:31,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:31,419 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:31,419 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:31,419 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:31,419 INFO L82 PathProgramCache]: Analyzing trace with hash 758776904, now seen corresponding path program 34 times [2018-10-04 09:37:31,420 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:31,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:31,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:31,420 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:31,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:31,962 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:32,278 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:32,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:32,298 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:32,298 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:32,306 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:37:32,358 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:37:32,358 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:32,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:32,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:32,992 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:32,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-04 09:37:32,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-04 09:37:32,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-04 09:37:32,993 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:32,993 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand 38 states. [2018-10-04 09:37:33,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:33,104 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2018-10-04 09:37:33,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-04 09:37:33,104 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 86 [2018-10-04 09:37:33,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:33,105 INFO L225 Difference]: With dead ends: 103 [2018-10-04 09:37:33,105 INFO L226 Difference]: Without dead ends: 89 [2018-10-04 09:37:33,105 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.6s impTime 8 [2018-10-04 09:37:33,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-04 09:37:33,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-04 09:37:33,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-04 09:37:33,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2018-10-04 09:37:33,110 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 86 [2018-10-04 09:37:33,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:33,110 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2018-10-04 09:37:33,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-04 09:37:33,110 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2018-10-04 09:37:33,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-04 09:37:33,110 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:33,111 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:33,111 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:33,111 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:33,111 INFO L82 PathProgramCache]: Analyzing trace with hash 646998596, now seen corresponding path program 35 times [2018-10-04 09:37:33,111 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:33,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:33,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:33,112 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:33,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:33,670 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:34,790 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:34,980 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:34,980 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:34,988 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:37:35,083 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-04 09:37:35,083 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:35,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:35,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:35,259 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:35,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-04 09:37:35,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-04 09:37:35,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-04 09:37:35,260 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:35,260 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand 39 states. [2018-10-04 09:37:35,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:35,352 INFO L93 Difference]: Finished difference Result 105 states and 109 transitions. [2018-10-04 09:37:35,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-04 09:37:35,353 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 88 [2018-10-04 09:37:35,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:35,353 INFO L225 Difference]: With dead ends: 105 [2018-10-04 09:37:35,353 INFO L226 Difference]: Without dead ends: 91 [2018-10-04 09:37:35,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.2s impTime 9 [2018-10-04 09:37:35,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-04 09:37:35,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-04 09:37:35,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-04 09:37:35,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2018-10-04 09:37:35,357 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 88 [2018-10-04 09:37:35,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:35,358 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2018-10-04 09:37:35,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-04 09:37:35,358 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2018-10-04 09:37:35,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-04 09:37:35,358 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:35,358 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:35,359 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:35,359 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:35,359 INFO L82 PathProgramCache]: Analyzing trace with hash 602227008, now seen corresponding path program 36 times [2018-10-04 09:37:35,359 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:35,359 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:35,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:35,359 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:35,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:35,686 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:35,867 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:35,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1424 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:35,930 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:35,930 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:35,937 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:37:36,029 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2018-10-04 09:37:36,029 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:36,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:36,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1424 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:36,233 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:36,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-04 09:37:36,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-04 09:37:36,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-04 09:37:36,234 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:36,234 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 40 states. [2018-10-04 09:37:36,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:36,388 INFO L93 Difference]: Finished difference Result 107 states and 111 transitions. [2018-10-04 09:37:36,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-04 09:37:36,389 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 90 [2018-10-04 09:37:36,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:36,390 INFO L225 Difference]: With dead ends: 107 [2018-10-04 09:37:36,390 INFO L226 Difference]: Without dead ends: 93 [2018-10-04 09:37:36,391 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 10 [2018-10-04 09:37:36,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-04 09:37:36,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-04 09:37:36,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-04 09:37:36,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2018-10-04 09:37:36,397 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 90 [2018-10-04 09:37:36,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:36,397 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2018-10-04 09:37:36,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-04 09:37:36,397 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2018-10-04 09:37:36,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-04 09:37:36,398 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:36,398 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:36,398 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:36,398 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:36,398 INFO L82 PathProgramCache]: Analyzing trace with hash 526403900, now seen corresponding path program 37 times [2018-10-04 09:37:36,398 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:36,399 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:36,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:36,399 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:36,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:37,345 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:37,713 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:37,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:37,786 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:37,786 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:37,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:37,856 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:37,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:38,014 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:38,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-04 09:37:38,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-04 09:37:38,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-04 09:37:38,015 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:38,015 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand 41 states. [2018-10-04 09:37:38,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:38,105 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2018-10-04 09:37:38,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-04 09:37:38,105 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 92 [2018-10-04 09:37:38,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:38,106 INFO L225 Difference]: With dead ends: 109 [2018-10-04 09:37:38,107 INFO L226 Difference]: Without dead ends: 95 [2018-10-04 09:37:38,107 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime 11 [2018-10-04 09:37:38,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-04 09:37:38,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-04 09:37:38,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-04 09:37:38,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2018-10-04 09:37:38,113 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 92 [2018-10-04 09:37:38,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:38,113 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2018-10-04 09:37:38,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-04 09:37:38,113 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2018-10-04 09:37:38,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-04 09:37:38,113 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:38,114 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:38,114 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:38,114 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:38,114 INFO L82 PathProgramCache]: Analyzing trace with hash 674841144, now seen corresponding path program 38 times [2018-10-04 09:37:38,114 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:38,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:38,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:38,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:38,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:38,721 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:39,071 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:39,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:39,226 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:39,226 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:39,233 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:37:39,308 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:37:39,308 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:39,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:39,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:39,526 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:39,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-04 09:37:39,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-04 09:37:39,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-04 09:37:39,527 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:39,527 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 42 states. [2018-10-04 09:37:39,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:39,771 INFO L93 Difference]: Finished difference Result 111 states and 115 transitions. [2018-10-04 09:37:39,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-04 09:37:39,772 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 94 [2018-10-04 09:37:39,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:39,772 INFO L225 Difference]: With dead ends: 111 [2018-10-04 09:37:39,772 INFO L226 Difference]: Without dead ends: 97 [2018-10-04 09:37:39,773 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 12 [2018-10-04 09:37:39,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-04 09:37:39,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-04 09:37:39,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-04 09:37:39,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2018-10-04 09:37:39,777 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 94 [2018-10-04 09:37:39,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:39,777 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2018-10-04 09:37:39,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-04 09:37:39,778 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2018-10-04 09:37:39,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-04 09:37:39,778 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:39,778 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:39,779 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:39,779 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:39,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1589111860, now seen corresponding path program 39 times [2018-10-04 09:37:39,779 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:39,779 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:39,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:39,780 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:39,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:40,376 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:40,780 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:40,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:40,870 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:40,871 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:40,878 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:37:41,006 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2018-10-04 09:37:41,006 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:41,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:41,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:41,175 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:41,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-04 09:37:41,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-04 09:37:41,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-04 09:37:41,176 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:41,176 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. Second operand 43 states. [2018-10-04 09:37:41,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:41,325 INFO L93 Difference]: Finished difference Result 113 states and 117 transitions. [2018-10-04 09:37:41,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-04 09:37:41,326 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 96 [2018-10-04 09:37:41,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:41,327 INFO L225 Difference]: With dead ends: 113 [2018-10-04 09:37:41,327 INFO L226 Difference]: Without dead ends: 99 [2018-10-04 09:37:41,327 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 13 [2018-10-04 09:37:41,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-04 09:37:41,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-04 09:37:41,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-04 09:37:41,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2018-10-04 09:37:41,332 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 96 [2018-10-04 09:37:41,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:41,333 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2018-10-04 09:37:41,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-04 09:37:41,333 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2018-10-04 09:37:41,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-04 09:37:41,334 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:41,334 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:41,334 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:41,334 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:41,334 INFO L82 PathProgramCache]: Analyzing trace with hash -265025744, now seen corresponding path program 40 times [2018-10-04 09:37:41,334 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:41,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:41,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:41,335 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:41,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:41,702 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:42,309 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:42,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:42,583 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:42,583 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:42,592 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:37:42,656 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:37:42,656 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:42,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:42,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:42,857 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:42,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-04 09:37:42,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-04 09:37:42,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-04 09:37:42,859 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:42,859 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand 44 states. [2018-10-04 09:37:43,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:43,004 INFO L93 Difference]: Finished difference Result 115 states and 119 transitions. [2018-10-04 09:37:43,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-04 09:37:43,004 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 98 [2018-10-04 09:37:43,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:43,005 INFO L225 Difference]: With dead ends: 115 [2018-10-04 09:37:43,005 INFO L226 Difference]: Without dead ends: 101 [2018-10-04 09:37:43,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime 14 [2018-10-04 09:37:43,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-04 09:37:43,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-04 09:37:43,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-04 09:37:43,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2018-10-04 09:37:43,012 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 98 [2018-10-04 09:37:43,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:43,012 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2018-10-04 09:37:43,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-04 09:37:43,012 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2018-10-04 09:37:43,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-04 09:37:43,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:43,013 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:43,014 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:43,014 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:43,014 INFO L82 PathProgramCache]: Analyzing trace with hash 320164652, now seen corresponding path program 41 times [2018-10-04 09:37:43,014 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:43,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:43,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:43,015 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:43,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:44,862 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:45,285 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:45,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:45,580 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:45,580 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:45,588 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:37:45,684 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-04 09:37:45,684 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:45,688 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:47,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:47,298 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:47,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-04 09:37:47,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-04 09:37:47,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-04 09:37:47,299 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:47,299 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 45 states. [2018-10-04 09:37:47,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:47,600 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2018-10-04 09:37:47,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-04 09:37:47,601 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 100 [2018-10-04 09:37:47,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:47,602 INFO L225 Difference]: With dead ends: 117 [2018-10-04 09:37:47,602 INFO L226 Difference]: Without dead ends: 103 [2018-10-04 09:37:47,602 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s Time 2.0s impTime 15 [2018-10-04 09:37:47,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-04 09:37:47,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-04 09:37:47,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-04 09:37:47,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2018-10-04 09:37:47,607 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 100 [2018-10-04 09:37:47,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:47,608 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2018-10-04 09:37:47,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-04 09:37:47,608 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2018-10-04 09:37:47,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-04 09:37:47,608 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:47,609 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:47,609 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:47,609 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:47,609 INFO L82 PathProgramCache]: Analyzing trace with hash 47419432, now seen corresponding path program 42 times [2018-10-04 09:37:47,609 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:47,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:47,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:47,610 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:47,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:48,298 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:48,801 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:48,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:48,964 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:48,964 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:48,973 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:37:49,070 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 44 check-sat command(s) [2018-10-04 09:37:49,071 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:49,074 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:49,247 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:49,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-04 09:37:49,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-04 09:37:49,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-04 09:37:49,249 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:49,249 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand 46 states. [2018-10-04 09:37:49,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:49,815 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2018-10-04 09:37:49,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-04 09:37:49,815 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 102 [2018-10-04 09:37:49,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:49,816 INFO L225 Difference]: With dead ends: 119 [2018-10-04 09:37:49,816 INFO L226 Difference]: Without dead ends: 105 [2018-10-04 09:37:49,816 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 16 [2018-10-04 09:37:49,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-04 09:37:49,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-04 09:37:49,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-04 09:37:49,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2018-10-04 09:37:49,822 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 102 [2018-10-04 09:37:49,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:49,822 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2018-10-04 09:37:49,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-04 09:37:49,823 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2018-10-04 09:37:49,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-04 09:37:49,823 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:49,823 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:49,823 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:49,824 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:49,824 INFO L82 PathProgramCache]: Analyzing trace with hash -67731932, now seen corresponding path program 43 times [2018-10-04 09:37:49,824 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:49,824 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:49,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:49,825 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:49,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:51,479 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:51,856 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:52,313 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:52,313 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:52,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:52,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:52,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:52,684 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:52,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-04 09:37:52,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-04 09:37:52,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-04 09:37:52,684 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:52,685 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 47 states. [2018-10-04 09:37:52,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:52,750 INFO L93 Difference]: Finished difference Result 121 states and 125 transitions. [2018-10-04 09:37:52,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-04 09:37:52,751 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 104 [2018-10-04 09:37:52,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:52,752 INFO L225 Difference]: With dead ends: 121 [2018-10-04 09:37:52,752 INFO L226 Difference]: Without dead ends: 107 [2018-10-04 09:37:52,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.0s impTime 17 [2018-10-04 09:37:52,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-04 09:37:52,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-04 09:37:52,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-04 09:37:52,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2018-10-04 09:37:52,759 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 104 [2018-10-04 09:37:52,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:52,759 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2018-10-04 09:37:52,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-04 09:37:52,759 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2018-10-04 09:37:52,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-04 09:37:52,760 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:52,760 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:52,760 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:52,761 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:52,761 INFO L82 PathProgramCache]: Analyzing trace with hash 940956960, now seen corresponding path program 44 times [2018-10-04 09:37:52,761 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:52,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:52,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:52,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:52,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:53,912 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:54,277 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:54,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:54,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:54,703 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:54,710 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:37:54,776 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:37:54,776 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:54,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:54,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:54,954 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:54,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-04 09:37:54,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-04 09:37:54,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-04 09:37:54,955 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:54,955 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand 48 states. [2018-10-04 09:37:55,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:55,168 INFO L93 Difference]: Finished difference Result 123 states and 127 transitions. [2018-10-04 09:37:55,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-04 09:37:55,168 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 106 [2018-10-04 09:37:55,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:55,169 INFO L225 Difference]: With dead ends: 123 [2018-10-04 09:37:55,169 INFO L226 Difference]: Without dead ends: 109 [2018-10-04 09:37:55,170 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 18 [2018-10-04 09:37:55,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-04 09:37:55,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-04 09:37:55,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-04 09:37:55,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2018-10-04 09:37:55,179 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 106 [2018-10-04 09:37:55,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:55,179 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2018-10-04 09:37:55,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-04 09:37:55,180 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2018-10-04 09:37:55,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-04 09:37:55,180 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:55,180 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:55,181 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:55,181 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:55,181 INFO L82 PathProgramCache]: Analyzing trace with hash -371626724, now seen corresponding path program 45 times [2018-10-04 09:37:55,181 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:55,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:55,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:55,182 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:55,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:55,588 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:55,989 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:56,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2180 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:56,147 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:56,147 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:56,154 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:37:56,264 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2018-10-04 09:37:56,264 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:56,267 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:56,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2180 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:56,483 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:56,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-04 09:37:56,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-04 09:37:56,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-04 09:37:56,484 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:56,484 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand 49 states. [2018-10-04 09:37:56,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:56,560 INFO L93 Difference]: Finished difference Result 125 states and 129 transitions. [2018-10-04 09:37:56,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-04 09:37:56,560 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 108 [2018-10-04 09:37:56,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:56,561 INFO L225 Difference]: With dead ends: 125 [2018-10-04 09:37:56,561 INFO L226 Difference]: Without dead ends: 111 [2018-10-04 09:37:56,561 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 19 [2018-10-04 09:37:56,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-04 09:37:56,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-04 09:37:56,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-04 09:37:56,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2018-10-04 09:37:56,568 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 108 [2018-10-04 09:37:56,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:56,568 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2018-10-04 09:37:56,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-04 09:37:56,568 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2018-10-04 09:37:56,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-04 09:37:56,569 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:56,569 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:56,569 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:56,569 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:56,569 INFO L82 PathProgramCache]: Analyzing trace with hash 955837976, now seen corresponding path program 46 times [2018-10-04 09:37:56,569 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:56,570 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:56,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:56,570 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:56,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:57,081 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:57,621 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:58,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2274 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:58,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:58,111 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:58,118 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:37:58,196 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:37:58,197 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:58,200 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:58,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2274 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:58,407 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:58,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-04 09:37:58,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-04 09:37:58,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-04 09:37:58,408 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:58,409 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand 50 states. [2018-10-04 09:37:58,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:58,538 INFO L93 Difference]: Finished difference Result 127 states and 131 transitions. [2018-10-04 09:37:58,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-04 09:37:58,538 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 110 [2018-10-04 09:37:58,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:58,539 INFO L225 Difference]: With dead ends: 127 [2018-10-04 09:37:58,539 INFO L226 Difference]: Without dead ends: 113 [2018-10-04 09:37:58,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 20 [2018-10-04 09:37:58,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-04 09:37:58,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-04 09:37:58,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-04 09:37:58,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2018-10-04 09:37:58,544 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 110 [2018-10-04 09:37:58,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:58,544 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2018-10-04 09:37:58,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-04 09:37:58,545 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2018-10-04 09:37:58,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-04 09:37:58,545 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:58,545 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:58,546 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:58,546 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:58,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1044127764, now seen corresponding path program 47 times [2018-10-04 09:37:58,546 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:58,546 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:58,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:58,547 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:58,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:58,867 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:59,046 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:59,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:59,339 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:59,339 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:59,346 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:37:59,455 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-04 09:37:59,455 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:59,458 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:59,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:37:59,811 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:59,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-04 09:37:59,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-04 09:37:59,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-04 09:37:59,812 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:59,812 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 51 states. [2018-10-04 09:37:59,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:59,911 INFO L93 Difference]: Finished difference Result 129 states and 133 transitions. [2018-10-04 09:37:59,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-04 09:37:59,912 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 112 [2018-10-04 09:37:59,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:59,913 INFO L225 Difference]: With dead ends: 129 [2018-10-04 09:37:59,913 INFO L226 Difference]: Without dead ends: 115 [2018-10-04 09:37:59,913 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.5s impTime 21 [2018-10-04 09:37:59,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-04 09:37:59,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-04 09:37:59,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-04 09:37:59,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2018-10-04 09:37:59,918 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 112 [2018-10-04 09:37:59,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:59,918 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2018-10-04 09:37:59,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-04 09:37:59,919 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2018-10-04 09:37:59,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-04 09:37:59,919 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:59,919 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:37:59,920 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:59,920 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:59,920 INFO L82 PathProgramCache]: Analyzing trace with hash -8731888, now seen corresponding path program 48 times [2018-10-04 09:37:59,920 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:59,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:59,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:59,921 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:59,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:00,272 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:00,457 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:00,836 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:00,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:00,847 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:00,847 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:00,854 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:38:00,974 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 50 check-sat command(s) [2018-10-04 09:38:00,974 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:00,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:01,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:01,203 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:01,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-04 09:38:01,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-04 09:38:01,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-04 09:38:01,204 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:01,204 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand 52 states. [2018-10-04 09:38:01,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:01,327 INFO L93 Difference]: Finished difference Result 131 states and 135 transitions. [2018-10-04 09:38:01,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-04 09:38:01,328 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 114 [2018-10-04 09:38:01,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:01,329 INFO L225 Difference]: With dead ends: 131 [2018-10-04 09:38:01,329 INFO L226 Difference]: Without dead ends: 117 [2018-10-04 09:38:01,329 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 7 [2018-10-04 09:38:01,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-04 09:38:01,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-04 09:38:01,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-04 09:38:01,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2018-10-04 09:38:01,334 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 114 [2018-10-04 09:38:01,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:01,335 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2018-10-04 09:38:01,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-04 09:38:01,335 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2018-10-04 09:38:01,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-04 09:38:01,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:01,335 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:01,335 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:01,335 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:01,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1805424396, now seen corresponding path program 49 times [2018-10-04 09:38:01,336 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:01,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:01,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:01,336 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:01,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:01,654 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:02,074 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:02,975 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:03,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2568 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:03,032 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:03,033 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:03,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:38:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:03,125 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:03,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2568 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:03,639 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:03,639 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-04 09:38:03,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-04 09:38:03,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-04 09:38:03,641 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:03,641 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand 53 states. [2018-10-04 09:38:03,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:03,774 INFO L93 Difference]: Finished difference Result 133 states and 137 transitions. [2018-10-04 09:38:03,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-04 09:38:03,775 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 116 [2018-10-04 09:38:03,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:03,776 INFO L225 Difference]: With dead ends: 133 [2018-10-04 09:38:03,776 INFO L226 Difference]: Without dead ends: 119 [2018-10-04 09:38:03,776 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.4s impTime 8 [2018-10-04 09:38:03,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-04 09:38:03,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-04 09:38:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-04 09:38:03,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2018-10-04 09:38:03,783 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 116 [2018-10-04 09:38:03,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:03,784 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2018-10-04 09:38:03,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-04 09:38:03,784 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2018-10-04 09:38:03,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-04 09:38:03,785 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:03,785 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:03,785 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:03,785 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:03,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1452891144, now seen corresponding path program 50 times [2018-10-04 09:38:03,785 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:03,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:03,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:03,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:38:03,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:04,157 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:04,338 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:04,722 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:04,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:04,825 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:04,825 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:04,834 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:38:04,915 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:38:04,915 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:04,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:05,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:05,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-04 09:38:05,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-04 09:38:05,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-04 09:38:05,961 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:05,961 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 54 states. [2018-10-04 09:38:06,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:06,313 INFO L93 Difference]: Finished difference Result 135 states and 139 transitions. [2018-10-04 09:38:06,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-04 09:38:06,313 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 118 [2018-10-04 09:38:06,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:06,314 INFO L225 Difference]: With dead ends: 135 [2018-10-04 09:38:06,314 INFO L226 Difference]: Without dead ends: 121 [2018-10-04 09:38:06,315 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 0.7s impTime 9 [2018-10-04 09:38:06,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-04 09:38:06,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-04 09:38:06,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-04 09:38:06,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2018-10-04 09:38:06,319 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 118 [2018-10-04 09:38:06,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:06,319 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2018-10-04 09:38:06,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-04 09:38:06,319 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2018-10-04 09:38:06,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-04 09:38:06,319 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:06,320 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:06,320 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:06,320 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:06,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1970852356, now seen corresponding path program 51 times [2018-10-04 09:38:06,320 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:06,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:06,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:06,321 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:06,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:06,605 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:06,881 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:07,137 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:07,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2774 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:07,215 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:07,215 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:07,224 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:38:07,358 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2018-10-04 09:38:07,358 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:07,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:07,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2774 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:07,914 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:07,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-04 09:38:07,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-04 09:38:07,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-04 09:38:07,915 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:07,916 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand 55 states. [2018-10-04 09:38:08,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:08,112 INFO L93 Difference]: Finished difference Result 137 states and 141 transitions. [2018-10-04 09:38:08,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-04 09:38:08,113 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 120 [2018-10-04 09:38:08,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:08,113 INFO L225 Difference]: With dead ends: 137 [2018-10-04 09:38:08,114 INFO L226 Difference]: Without dead ends: 123 [2018-10-04 09:38:08,117 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.6s impTime 10 [2018-10-04 09:38:08,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-04 09:38:08,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-04 09:38:08,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-04 09:38:08,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2018-10-04 09:38:08,122 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 120 [2018-10-04 09:38:08,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:08,123 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2018-10-04 09:38:08,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-04 09:38:08,123 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2018-10-04 09:38:08,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-04 09:38:08,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:08,124 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:08,124 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:08,124 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:08,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1515370752, now seen corresponding path program 52 times [2018-10-04 09:38:08,124 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:08,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:08,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:08,125 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:08,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:08,388 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:08,568 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:08,991 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2880 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:09,189 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:09,189 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:09,199 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:38:09,277 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:38:09,278 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:09,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:09,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2880 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:09,515 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:09,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-04 09:38:09,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-04 09:38:09,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-04 09:38:09,516 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:09,516 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand 56 states. [2018-10-04 09:38:09,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:09,648 INFO L93 Difference]: Finished difference Result 139 states and 143 transitions. [2018-10-04 09:38:09,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-04 09:38:09,648 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 122 [2018-10-04 09:38:09,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:09,649 INFO L225 Difference]: With dead ends: 139 [2018-10-04 09:38:09,649 INFO L226 Difference]: Without dead ends: 125 [2018-10-04 09:38:09,650 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 11 [2018-10-04 09:38:09,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-10-04 09:38:09,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-10-04 09:38:09,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-04 09:38:09,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2018-10-04 09:38:09,654 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 122 [2018-10-04 09:38:09,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:09,654 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2018-10-04 09:38:09,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-04 09:38:09,654 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2018-10-04 09:38:09,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-04 09:38:09,654 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:09,654 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:09,655 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:09,655 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:09,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1884213500, now seen corresponding path program 53 times [2018-10-04 09:38:09,655 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:09,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:09,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:09,656 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:09,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:09,893 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:10,279 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:10,883 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:11,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2988 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:11,131 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:11,131 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:11,138 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:38:11,269 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-04 09:38:11,270 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:11,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2988 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:11,584 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:11,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-04 09:38:11,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-04 09:38:11,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-04 09:38:11,585 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:11,585 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 57 states. [2018-10-04 09:38:11,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:11,735 INFO L93 Difference]: Finished difference Result 141 states and 145 transitions. [2018-10-04 09:38:11,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-04 09:38:11,735 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 124 [2018-10-04 09:38:11,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:11,736 INFO L225 Difference]: With dead ends: 141 [2018-10-04 09:38:11,736 INFO L226 Difference]: Without dead ends: 127 [2018-10-04 09:38:11,736 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 12 [2018-10-04 09:38:11,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-04 09:38:11,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-04 09:38:11,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-04 09:38:11,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 129 transitions. [2018-10-04 09:38:11,741 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 129 transitions. Word has length 124 [2018-10-04 09:38:11,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:11,742 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 129 transitions. [2018-10-04 09:38:11,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-04 09:38:11,742 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 129 transitions. [2018-10-04 09:38:11,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-04 09:38:11,742 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:11,743 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:11,743 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:11,743 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:11,743 INFO L82 PathProgramCache]: Analyzing trace with hash -140191240, now seen corresponding path program 54 times [2018-10-04 09:38:11,743 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:11,743 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:11,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:11,744 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:11,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:12,076 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:12,422 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:13,111 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:13,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3098 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:13,374 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:13,374 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:13,383 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:38:13,525 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 56 check-sat command(s) [2018-10-04 09:38:13,525 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:13,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:13,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3098 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:13,739 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:13,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-04 09:38:13,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-04 09:38:13,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-04 09:38:13,740 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:13,740 INFO L87 Difference]: Start difference. First operand 127 states and 129 transitions. Second operand 58 states. [2018-10-04 09:38:13,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:13,928 INFO L93 Difference]: Finished difference Result 143 states and 147 transitions. [2018-10-04 09:38:13,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-04 09:38:13,928 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 126 [2018-10-04 09:38:13,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:13,929 INFO L225 Difference]: With dead ends: 143 [2018-10-04 09:38:13,929 INFO L226 Difference]: Without dead ends: 129 [2018-10-04 09:38:13,929 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.3s impTime 13 [2018-10-04 09:38:13,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-04 09:38:13,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-10-04 09:38:13,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-04 09:38:13,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 131 transitions. [2018-10-04 09:38:13,933 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 131 transitions. Word has length 126 [2018-10-04 09:38:13,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:13,933 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 131 transitions. [2018-10-04 09:38:13,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-04 09:38:13,934 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 131 transitions. [2018-10-04 09:38:13,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-04 09:38:13,934 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:13,934 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:13,934 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:13,934 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:13,935 INFO L82 PathProgramCache]: Analyzing trace with hash 27038708, now seen corresponding path program 55 times [2018-10-04 09:38:13,935 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:13,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:13,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:13,935 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:13,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:14,130 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:14,492 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:15,035 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:15,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3210 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:15,356 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:15,356 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:15,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:38:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:15,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:15,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3210 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:15,688 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:15,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-04 09:38:15,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-04 09:38:15,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-04 09:38:15,689 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:15,689 INFO L87 Difference]: Start difference. First operand 129 states and 131 transitions. Second operand 59 states. [2018-10-04 09:38:15,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:15,849 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2018-10-04 09:38:15,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-04 09:38:15,849 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 128 [2018-10-04 09:38:15,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:15,850 INFO L225 Difference]: With dead ends: 145 [2018-10-04 09:38:15,850 INFO L226 Difference]: Without dead ends: 131 [2018-10-04 09:38:15,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime 14 [2018-10-04 09:38:15,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-04 09:38:15,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-04 09:38:15,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-04 09:38:15,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2018-10-04 09:38:15,855 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 128 [2018-10-04 09:38:15,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:15,855 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2018-10-04 09:38:15,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-04 09:38:15,855 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2018-10-04 09:38:15,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-04 09:38:15,855 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:15,855 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:15,856 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:15,856 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:15,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1821228784, now seen corresponding path program 56 times [2018-10-04 09:38:15,856 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:15,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:15,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:15,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:38:15,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:16,238 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:16,606 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:17,209 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:17,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3324 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:17,603 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:17,603 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:17,609 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:38:17,693 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:38:17,693 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:17,696 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:18,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3324 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:18,076 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:18,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-04 09:38:18,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-04 09:38:18,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-04 09:38:18,077 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:18,077 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand 60 states. [2018-10-04 09:38:18,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:18,276 INFO L93 Difference]: Finished difference Result 147 states and 151 transitions. [2018-10-04 09:38:18,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-04 09:38:18,276 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 130 [2018-10-04 09:38:18,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:18,277 INFO L225 Difference]: With dead ends: 147 [2018-10-04 09:38:18,277 INFO L226 Difference]: Without dead ends: 133 [2018-10-04 09:38:18,277 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 15 [2018-10-04 09:38:18,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-04 09:38:18,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-04 09:38:18,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-04 09:38:18,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 135 transitions. [2018-10-04 09:38:18,283 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 135 transitions. Word has length 130 [2018-10-04 09:38:18,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:18,283 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 135 transitions. [2018-10-04 09:38:18,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-04 09:38:18,284 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 135 transitions. [2018-10-04 09:38:18,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-04 09:38:18,284 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:18,284 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:18,285 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:18,285 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:18,285 INFO L82 PathProgramCache]: Analyzing trace with hash -538961172, now seen corresponding path program 57 times [2018-10-04 09:38:18,285 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:18,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:18,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:18,286 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:18,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:18,478 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:18,724 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:19,198 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3440 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:19,663 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:19,663 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:19,674 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:38:19,829 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2018-10-04 09:38:19,830 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:19,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3440 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:20,048 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:20,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-04 09:38:20,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-04 09:38:20,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-04 09:38:20,049 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:20,049 INFO L87 Difference]: Start difference. First operand 133 states and 135 transitions. Second operand 61 states. [2018-10-04 09:38:20,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:20,211 INFO L93 Difference]: Finished difference Result 149 states and 153 transitions. [2018-10-04 09:38:20,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-04 09:38:20,211 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 132 [2018-10-04 09:38:20,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:20,212 INFO L225 Difference]: With dead ends: 149 [2018-10-04 09:38:20,212 INFO L226 Difference]: Without dead ends: 135 [2018-10-04 09:38:20,213 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime 16 [2018-10-04 09:38:20,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-04 09:38:20,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-04 09:38:20,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-04 09:38:20,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2018-10-04 09:38:20,219 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 132 [2018-10-04 09:38:20,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:20,219 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2018-10-04 09:38:20,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-04 09:38:20,220 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2018-10-04 09:38:20,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-04 09:38:20,220 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:20,220 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:20,220 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:20,220 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:20,221 INFO L82 PathProgramCache]: Analyzing trace with hash -938776600, now seen corresponding path program 58 times [2018-10-04 09:38:20,221 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:20,221 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:20,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:20,221 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:20,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:20,462 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:20,647 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:20,980 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:21,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3558 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:21,304 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:21,304 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:21,311 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:38:21,400 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:38:21,401 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:21,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:21,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3558 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:21,675 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:21,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-04 09:38:21,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-04 09:38:21,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-04 09:38:21,676 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:21,677 INFO L87 Difference]: Start difference. First operand 135 states and 137 transitions. Second operand 62 states. [2018-10-04 09:38:21,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:21,825 INFO L93 Difference]: Finished difference Result 151 states and 155 transitions. [2018-10-04 09:38:21,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-04 09:38:21,826 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 134 [2018-10-04 09:38:21,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:21,826 INFO L225 Difference]: With dead ends: 151 [2018-10-04 09:38:21,827 INFO L226 Difference]: Without dead ends: 137 [2018-10-04 09:38:21,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 17 [2018-10-04 09:38:21,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-04 09:38:21,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-10-04 09:38:21,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-04 09:38:21,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2018-10-04 09:38:21,832 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 134 [2018-10-04 09:38:21,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:21,832 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2018-10-04 09:38:21,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-04 09:38:21,832 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2018-10-04 09:38:21,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-04 09:38:21,832 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:21,833 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:21,833 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:21,833 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:21,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1385653732, now seen corresponding path program 59 times [2018-10-04 09:38:21,833 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:21,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:21,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:21,834 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:21,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:22,024 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:22,270 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:22,742 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:23,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3678 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:23,595 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:23,595 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:23,602 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:38:23,744 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2018-10-04 09:38:23,744 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:23,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:24,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3678 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:24,172 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:24,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-04 09:38:24,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-04 09:38:24,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-04 09:38:24,174 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:24,174 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand 63 states. [2018-10-04 09:38:24,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:24,364 INFO L93 Difference]: Finished difference Result 153 states and 157 transitions. [2018-10-04 09:38:24,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-04 09:38:24,365 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 136 [2018-10-04 09:38:24,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:24,366 INFO L225 Difference]: With dead ends: 153 [2018-10-04 09:38:24,366 INFO L226 Difference]: Without dead ends: 139 [2018-10-04 09:38:24,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.5s impTime 18 [2018-10-04 09:38:24,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-04 09:38:24,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-04 09:38:24,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-04 09:38:24,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 141 transitions. [2018-10-04 09:38:24,371 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 141 transitions. Word has length 136 [2018-10-04 09:38:24,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:24,371 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 141 transitions. [2018-10-04 09:38:24,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-04 09:38:24,371 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 141 transitions. [2018-10-04 09:38:24,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-04 09:38:24,372 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:24,372 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:24,372 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:24,372 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:24,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1780208864, now seen corresponding path program 60 times [2018-10-04 09:38:24,372 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:24,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:24,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:24,373 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:24,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:24,612 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:25,006 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:25,616 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:26,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3800 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:26,239 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:26,239 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:26,247 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:38:26,406 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2018-10-04 09:38:26,407 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:26,410 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:26,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3800 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:26,695 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:26,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-04 09:38:26,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-04 09:38:26,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-04 09:38:26,696 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:26,696 INFO L87 Difference]: Start difference. First operand 139 states and 141 transitions. Second operand 64 states. [2018-10-04 09:38:26,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:26,885 INFO L93 Difference]: Finished difference Result 155 states and 159 transitions. [2018-10-04 09:38:26,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-04 09:38:26,886 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 138 [2018-10-04 09:38:26,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:26,886 INFO L225 Difference]: With dead ends: 155 [2018-10-04 09:38:26,886 INFO L226 Difference]: Without dead ends: 141 [2018-10-04 09:38:26,887 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.6s impTime 19 [2018-10-04 09:38:26,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-04 09:38:26,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-04 09:38:26,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-04 09:38:26,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2018-10-04 09:38:26,891 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 138 [2018-10-04 09:38:26,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:26,892 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 143 transitions. [2018-10-04 09:38:26,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-04 09:38:26,892 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 143 transitions. [2018-10-04 09:38:26,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-04 09:38:26,893 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:26,893 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:26,893 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:26,893 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:26,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1304398628, now seen corresponding path program 61 times [2018-10-04 09:38:26,893 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:26,893 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:26,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:26,894 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:26,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:27,106 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:27,458 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:28,001 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:28,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3924 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:28,897 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:28,897 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:28,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:38:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:29,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:29,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3924 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:29,289 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:29,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-04 09:38:29,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-04 09:38:29,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-04 09:38:29,290 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:29,290 INFO L87 Difference]: Start difference. First operand 141 states and 143 transitions. Second operand 65 states. [2018-10-04 09:38:29,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:29,482 INFO L93 Difference]: Finished difference Result 157 states and 161 transitions. [2018-10-04 09:38:29,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-04 09:38:29,482 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 140 [2018-10-04 09:38:29,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:29,483 INFO L225 Difference]: With dead ends: 157 [2018-10-04 09:38:29,483 INFO L226 Difference]: Without dead ends: 143 [2018-10-04 09:38:29,483 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.7s impTime 20 [2018-10-04 09:38:29,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-04 09:38:29,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-04 09:38:29,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-04 09:38:29,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2018-10-04 09:38:29,489 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 140 [2018-10-04 09:38:29,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:29,489 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2018-10-04 09:38:29,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-04 09:38:29,489 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2018-10-04 09:38:29,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-04 09:38:29,490 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:29,490 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:29,490 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:29,490 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:29,490 INFO L82 PathProgramCache]: Analyzing trace with hash -2084764200, now seen corresponding path program 62 times [2018-10-04 09:38:29,490 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:29,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:29,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:29,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:38:29,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:29,698 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:30,047 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:30,586 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:31,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:31,282 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:31,282 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:31,290 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:38:31,384 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:38:31,384 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:31,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:31,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:31,620 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:31,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-04 09:38:31,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-04 09:38:31,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-04 09:38:31,621 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:31,621 INFO L87 Difference]: Start difference. First operand 143 states and 145 transitions. Second operand 66 states. [2018-10-04 09:38:32,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:32,163 INFO L93 Difference]: Finished difference Result 159 states and 163 transitions. [2018-10-04 09:38:32,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-04 09:38:32,163 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 142 [2018-10-04 09:38:32,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:32,164 INFO L225 Difference]: With dead ends: 159 [2018-10-04 09:38:32,165 INFO L226 Difference]: Without dead ends: 145 [2018-10-04 09:38:32,165 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.5s impTime 21 [2018-10-04 09:38:32,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-04 09:38:32,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-10-04 09:38:32,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-04 09:38:32,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 147 transitions. [2018-10-04 09:38:32,172 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 147 transitions. Word has length 142 [2018-10-04 09:38:32,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:32,172 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 147 transitions. [2018-10-04 09:38:32,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-04 09:38:32,172 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 147 transitions. [2018-10-04 09:38:32,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-04 09:38:32,173 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:32,173 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:32,174 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:32,174 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:32,174 INFO L82 PathProgramCache]: Analyzing trace with hash -396802092, now seen corresponding path program 63 times [2018-10-04 09:38:32,174 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:32,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:32,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:32,175 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:32,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:32,576 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:32,961 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:33,792 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:34,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4178 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:34,566 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:34,566 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:34,576 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:38:34,751 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 65 check-sat command(s) [2018-10-04 09:38:34,751 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:34,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:34,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4178 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:34,991 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:34,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-04 09:38:34,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-04 09:38:34,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-04 09:38:34,992 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:34,992 INFO L87 Difference]: Start difference. First operand 145 states and 147 transitions. Second operand 67 states. [2018-10-04 09:38:35,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:35,195 INFO L93 Difference]: Finished difference Result 161 states and 165 transitions. [2018-10-04 09:38:35,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-04 09:38:35,196 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 144 [2018-10-04 09:38:35,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:35,196 INFO L225 Difference]: With dead ends: 161 [2018-10-04 09:38:35,196 INFO L226 Difference]: Without dead ends: 147 [2018-10-04 09:38:35,197 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.0s impTime 22 [2018-10-04 09:38:35,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-04 09:38:35,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-04 09:38:35,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-04 09:38:35,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2018-10-04 09:38:35,203 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 144 [2018-10-04 09:38:35,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:35,204 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 149 transitions. [2018-10-04 09:38:35,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-04 09:38:35,204 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 149 transitions. [2018-10-04 09:38:35,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-04 09:38:35,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:35,205 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:35,205 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:35,205 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:35,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1762854192, now seen corresponding path program 64 times [2018-10-04 09:38:35,205 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:35,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:35,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:35,206 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:35,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:35,449 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:35,661 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:36,078 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:36,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4308 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:36,911 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:36,911 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:36,936 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:38:37,029 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:38:37,029 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:37,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4308 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:37,295 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:37,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-04 09:38:37,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-04 09:38:37,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-04 09:38:37,296 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:37,296 INFO L87 Difference]: Start difference. First operand 147 states and 149 transitions. Second operand 68 states. [2018-10-04 09:38:37,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:37,491 INFO L93 Difference]: Finished difference Result 163 states and 167 transitions. [2018-10-04 09:38:37,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-04 09:38:37,491 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 146 [2018-10-04 09:38:37,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:37,492 INFO L225 Difference]: With dead ends: 163 [2018-10-04 09:38:37,492 INFO L226 Difference]: Without dead ends: 149 [2018-10-04 09:38:37,492 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.4s impTime 23 [2018-10-04 09:38:37,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-04 09:38:37,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-10-04 09:38:37,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-04 09:38:37,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2018-10-04 09:38:37,500 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 146 [2018-10-04 09:38:37,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:37,500 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2018-10-04 09:38:37,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-04 09:38:37,500 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2018-10-04 09:38:37,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-04 09:38:37,501 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:37,501 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:37,501 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:37,502 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:37,502 INFO L82 PathProgramCache]: Analyzing trace with hash -278929716, now seen corresponding path program 65 times [2018-10-04 09:38:37,502 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:37,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:37,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:37,503 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:37,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:37,785 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:38,086 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:38,474 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:39,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4440 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:39,062 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:39,062 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:39,069 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:38:39,252 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2018-10-04 09:38:39,252 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:39,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:39,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4440 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:39,538 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:39,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-04 09:38:39,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-04 09:38:39,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-04 09:38:39,539 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:39,539 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand 69 states. [2018-10-04 09:38:39,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:39,690 INFO L93 Difference]: Finished difference Result 165 states and 169 transitions. [2018-10-04 09:38:39,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-04 09:38:39,691 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 148 [2018-10-04 09:38:39,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:39,691 INFO L225 Difference]: With dead ends: 165 [2018-10-04 09:38:39,691 INFO L226 Difference]: Without dead ends: 151 [2018-10-04 09:38:39,692 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 24 [2018-10-04 09:38:39,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-04 09:38:39,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-04 09:38:39,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-04 09:38:39,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2018-10-04 09:38:39,699 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 148 [2018-10-04 09:38:39,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:39,699 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2018-10-04 09:38:39,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-04 09:38:39,700 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2018-10-04 09:38:39,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-04 09:38:39,700 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:39,700 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:39,701 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:39,701 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:39,701 INFO L82 PathProgramCache]: Analyzing trace with hash -156650552, now seen corresponding path program 66 times [2018-10-04 09:38:39,701 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:39,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:39,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:39,702 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:39,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:40,002 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:40,184 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:40,568 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:41,556 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:38:41,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4574 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:41,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:41,575 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:41,581 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:38:41,759 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 68 check-sat command(s) [2018-10-04 09:38:41,759 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:41,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:42,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4574 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:42,108 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:42,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-04 09:38:42,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-04 09:38:42,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-04 09:38:42,109 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:42,109 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand 70 states. [2018-10-04 09:38:42,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:42,336 INFO L93 Difference]: Finished difference Result 167 states and 171 transitions. [2018-10-04 09:38:42,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-04 09:38:42,337 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 150 [2018-10-04 09:38:42,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:42,338 INFO L225 Difference]: With dead ends: 167 [2018-10-04 09:38:42,338 INFO L226 Difference]: Without dead ends: 153 [2018-10-04 09:38:42,338 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime 8 [2018-10-04 09:38:42,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-04 09:38:42,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-10-04 09:38:42,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-04 09:38:42,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 155 transitions. [2018-10-04 09:38:42,344 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 155 transitions. Word has length 150 [2018-10-04 09:38:42,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:42,344 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 155 transitions. [2018-10-04 09:38:42,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-04 09:38:42,344 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 155 transitions. [2018-10-04 09:38:42,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-04 09:38:42,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:42,345 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:42,345 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:42,345 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:42,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1389509060, now seen corresponding path program 67 times [2018-10-04 09:38:42,345 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:42,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:42,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:42,346 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:42,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:42,618 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:43,105 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:44,007 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:44,989 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:38:45,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4710 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:45,069 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:45,069 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:45,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:38:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:45,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 4710 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:45,422 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:45,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-04 09:38:45,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-04 09:38:45,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-04 09:38:45,423 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:45,423 INFO L87 Difference]: Start difference. First operand 153 states and 155 transitions. Second operand 71 states. [2018-10-04 09:38:45,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:45,662 INFO L93 Difference]: Finished difference Result 169 states and 173 transitions. [2018-10-04 09:38:45,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-04 09:38:45,662 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 152 [2018-10-04 09:38:45,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:45,663 INFO L225 Difference]: With dead ends: 169 [2018-10-04 09:38:45,663 INFO L226 Difference]: Without dead ends: 155 [2018-10-04 09:38:45,663 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.4s impTime 9 [2018-10-04 09:38:45,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-04 09:38:45,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-04 09:38:45,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-04 09:38:45,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2018-10-04 09:38:45,669 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 152 [2018-10-04 09:38:45,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:45,669 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2018-10-04 09:38:45,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-04 09:38:45,669 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2018-10-04 09:38:45,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-04 09:38:45,670 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:45,670 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:45,670 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:45,670 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:45,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1190211776, now seen corresponding path program 68 times [2018-10-04 09:38:45,670 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:45,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:45,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:45,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:38:45,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:45,912 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:46,093 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:46,468 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:47,176 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:38:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4848 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:47,287 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:47,287 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:47,294 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:38:47,396 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:38:47,396 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:47,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:47,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4848 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:47,947 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:47,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-04 09:38:47,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-04 09:38:47,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-04 09:38:47,949 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:47,949 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand 72 states. [2018-10-04 09:38:48,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:48,280 INFO L93 Difference]: Finished difference Result 171 states and 175 transitions. [2018-10-04 09:38:48,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-04 09:38:48,281 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 154 [2018-10-04 09:38:48,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:48,281 INFO L225 Difference]: With dead ends: 171 [2018-10-04 09:38:48,281 INFO L226 Difference]: Without dead ends: 157 [2018-10-04 09:38:48,282 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.3s impTime 10 [2018-10-04 09:38:48,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-04 09:38:48,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-10-04 09:38:48,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-04 09:38:48,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 159 transitions. [2018-10-04 09:38:48,286 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 159 transitions. Word has length 154 [2018-10-04 09:38:48,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:48,287 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 159 transitions. [2018-10-04 09:38:48,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-04 09:38:48,287 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 159 transitions. [2018-10-04 09:38:48,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-04 09:38:48,287 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:48,287 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:48,288 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:48,288 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:48,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1355917124, now seen corresponding path program 69 times [2018-10-04 09:38:48,288 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:48,288 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:48,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:48,289 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:48,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:48,626 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:48,960 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:49,300 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:49,964 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:38:50,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4988 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:50,115 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:50,115 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:50,123 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:38:50,325 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 71 check-sat command(s) [2018-10-04 09:38:50,325 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:50,329 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4988 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:50,603 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:50,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-04 09:38:50,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-04 09:38:50,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-04 09:38:50,604 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:50,604 INFO L87 Difference]: Start difference. First operand 157 states and 159 transitions. Second operand 73 states. [2018-10-04 09:38:50,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:50,806 INFO L93 Difference]: Finished difference Result 173 states and 177 transitions. [2018-10-04 09:38:50,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-04 09:38:50,806 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 156 [2018-10-04 09:38:50,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:50,807 INFO L225 Difference]: With dead ends: 173 [2018-10-04 09:38:50,807 INFO L226 Difference]: Without dead ends: 159 [2018-10-04 09:38:50,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.5s impTime 11 [2018-10-04 09:38:50,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-04 09:38:50,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-04 09:38:50,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-04 09:38:50,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 161 transitions. [2018-10-04 09:38:50,814 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 161 transitions. Word has length 156 [2018-10-04 09:38:50,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:50,814 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 161 transitions. [2018-10-04 09:38:50,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-04 09:38:50,814 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 161 transitions. [2018-10-04 09:38:50,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-04 09:38:50,815 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:50,815 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:50,815 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:50,815 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:50,816 INFO L82 PathProgramCache]: Analyzing trace with hash -54431304, now seen corresponding path program 70 times [2018-10-04 09:38:50,816 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:50,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:50,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:50,816 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:50,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:51,030 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:51,370 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:51,900 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:52,795 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:38:53,060 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:53,060 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:53,060 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:53,068 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:38:53,169 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:38:53,170 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:53,173 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:53,435 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:53,456 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:53,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-04 09:38:53,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-04 09:38:53,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-04 09:38:53,457 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:53,457 INFO L87 Difference]: Start difference. First operand 159 states and 161 transitions. Second operand 74 states. [2018-10-04 09:38:53,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:53,766 INFO L93 Difference]: Finished difference Result 175 states and 179 transitions. [2018-10-04 09:38:53,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-04 09:38:53,767 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 158 [2018-10-04 09:38:53,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:53,768 INFO L225 Difference]: With dead ends: 175 [2018-10-04 09:38:53,768 INFO L226 Difference]: Without dead ends: 161 [2018-10-04 09:38:53,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.9s impTime 12 [2018-10-04 09:38:53,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-04 09:38:53,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-10-04 09:38:53,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-04 09:38:53,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 163 transitions. [2018-10-04 09:38:53,775 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 163 transitions. Word has length 158 [2018-10-04 09:38:53,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:53,775 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 163 transitions. [2018-10-04 09:38:53,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-04 09:38:53,775 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 163 transitions. [2018-10-04 09:38:53,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-04 09:38:53,776 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:53,776 INFO L375 BasicCegarLoop]: trace histogram [73, 72, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:53,777 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:53,777 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:53,777 INFO L82 PathProgramCache]: Analyzing trace with hash 837958580, now seen corresponding path program 71 times [2018-10-04 09:38:53,777 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:53,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:53,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:53,778 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:53,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:54,073 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:54,475 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:54,769 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:55,750 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:38:56,079 INFO L134 CoverageAnalysis]: Checked inductivity of 5274 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:56,079 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:56,080 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:56,086 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:38:56,284 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2018-10-04 09:38:56,285 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:56,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:56,577 INFO L134 CoverageAnalysis]: Checked inductivity of 5274 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:56,597 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:56,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-04 09:38:56,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-04 09:38:56,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-04 09:38:56,599 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:56,599 INFO L87 Difference]: Start difference. First operand 161 states and 163 transitions. Second operand 75 states. [2018-10-04 09:38:56,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:56,853 INFO L93 Difference]: Finished difference Result 177 states and 181 transitions. [2018-10-04 09:38:56,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-04 09:38:56,854 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 160 [2018-10-04 09:38:56,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:56,855 INFO L225 Difference]: With dead ends: 177 [2018-10-04 09:38:56,855 INFO L226 Difference]: Without dead ends: 163 [2018-10-04 09:38:56,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime 13 [2018-10-04 09:38:56,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-04 09:38:56,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-04 09:38:56,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-04 09:38:56,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 165 transitions. [2018-10-04 09:38:56,863 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 165 transitions. Word has length 160 [2018-10-04 09:38:56,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:56,863 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 165 transitions. [2018-10-04 09:38:56,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-04 09:38:56,864 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 165 transitions. [2018-10-04 09:38:56,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-04 09:38:56,864 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:56,864 INFO L375 BasicCegarLoop]: trace histogram [74, 73, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:56,865 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:56,865 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:56,865 INFO L82 PathProgramCache]: Analyzing trace with hash -568822096, now seen corresponding path program 72 times [2018-10-04 09:38:56,865 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:56,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:56,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:56,866 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:56,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:57,132 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:57,492 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:58,109 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:58,331 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:38:58,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5420 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:58,472 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:58,472 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:58,480 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:38:58,717 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 74 check-sat command(s) [2018-10-04 09:38:58,717 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:58,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:59,226 INFO L134 CoverageAnalysis]: Checked inductivity of 5420 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:38:59,246 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:59,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-04 09:38:59,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-04 09:38:59,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-04 09:38:59,248 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:59,248 INFO L87 Difference]: Start difference. First operand 163 states and 165 transitions. Second operand 76 states. [2018-10-04 09:38:59,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:59,425 INFO L93 Difference]: Finished difference Result 179 states and 183 transitions. [2018-10-04 09:38:59,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-04 09:38:59,425 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 162 [2018-10-04 09:38:59,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:59,426 INFO L225 Difference]: With dead ends: 179 [2018-10-04 09:38:59,426 INFO L226 Difference]: Without dead ends: 165 [2018-10-04 09:38:59,426 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.2s impTime 14 [2018-10-04 09:38:59,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-04 09:38:59,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-10-04 09:38:59,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-04 09:38:59,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 167 transitions. [2018-10-04 09:38:59,433 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 167 transitions. Word has length 162 [2018-10-04 09:38:59,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:59,433 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 167 transitions. [2018-10-04 09:38:59,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-04 09:38:59,433 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 167 transitions. [2018-10-04 09:38:59,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-04 09:38:59,434 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:59,434 INFO L375 BasicCegarLoop]: trace histogram [75, 74, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:38:59,434 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:59,434 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:59,434 INFO L82 PathProgramCache]: Analyzing trace with hash 429646508, now seen corresponding path program 73 times [2018-10-04 09:38:59,434 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:59,435 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:59,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:59,435 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:59,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:59,756 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:00,140 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:00,659 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:01,625 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 5568 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:02,084 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:02,084 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:02,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:39:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:02,201 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:02,508 INFO L134 CoverageAnalysis]: Checked inductivity of 5568 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:02,528 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:02,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-04 09:39:02,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-04 09:39:02,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-04 09:39:02,529 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:02,529 INFO L87 Difference]: Start difference. First operand 165 states and 167 transitions. Second operand 77 states. [2018-10-04 09:39:02,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:02,784 INFO L93 Difference]: Finished difference Result 181 states and 185 transitions. [2018-10-04 09:39:02,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-04 09:39:02,785 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 164 [2018-10-04 09:39:02,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:02,786 INFO L225 Difference]: With dead ends: 181 [2018-10-04 09:39:02,786 INFO L226 Difference]: Without dead ends: 167 [2018-10-04 09:39:02,786 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.2s impTime 15 [2018-10-04 09:39:02,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-04 09:39:02,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-04 09:39:02,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-04 09:39:02,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 169 transitions. [2018-10-04 09:39:02,791 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 169 transitions. Word has length 164 [2018-10-04 09:39:02,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:02,791 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 169 transitions. [2018-10-04 09:39:02,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-04 09:39:02,791 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 169 transitions. [2018-10-04 09:39:02,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-04 09:39:02,792 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:02,792 INFO L375 BasicCegarLoop]: trace histogram [76, 75, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:39:02,792 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:02,792 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:02,792 INFO L82 PathProgramCache]: Analyzing trace with hash -2114699352, now seen corresponding path program 74 times [2018-10-04 09:39:02,792 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:02,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:02,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:02,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:39:02,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:03,045 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:03,227 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:03,545 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:04,512 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 5718 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:04,886 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:04,886 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:04,894 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:39:04,997 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:39:04,998 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:05,001 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:05,254 INFO L134 CoverageAnalysis]: Checked inductivity of 5718 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:05,275 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:05,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-04 09:39:05,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-04 09:39:05,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-04 09:39:05,276 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:05,276 INFO L87 Difference]: Start difference. First operand 167 states and 169 transitions. Second operand 78 states. [2018-10-04 09:39:05,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:05,497 INFO L93 Difference]: Finished difference Result 183 states and 187 transitions. [2018-10-04 09:39:05,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-04 09:39:05,497 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 166 [2018-10-04 09:39:05,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:05,498 INFO L225 Difference]: With dead ends: 183 [2018-10-04 09:39:05,498 INFO L226 Difference]: Without dead ends: 169 [2018-10-04 09:39:05,498 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.7s impTime 16 [2018-10-04 09:39:05,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-04 09:39:05,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-10-04 09:39:05,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-04 09:39:05,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 171 transitions. [2018-10-04 09:39:05,503 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 171 transitions. Word has length 166 [2018-10-04 09:39:05,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:05,503 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 171 transitions. [2018-10-04 09:39:05,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-04 09:39:05,504 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 171 transitions. [2018-10-04 09:39:05,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-04 09:39:05,504 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:05,504 INFO L375 BasicCegarLoop]: trace histogram [77, 76, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:39:05,504 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:05,505 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:05,505 INFO L82 PathProgramCache]: Analyzing trace with hash 900287908, now seen corresponding path program 75 times [2018-10-04 09:39:05,505 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:05,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:05,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:05,505 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:05,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:05,721 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:06,094 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:06,502 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:06,799 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:07,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5870 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:07,069 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:07,069 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:07,076 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:39:07,303 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 77 check-sat command(s) [2018-10-04 09:39:07,303 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:07,307 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:07,556 INFO L134 CoverageAnalysis]: Checked inductivity of 5870 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:07,576 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:07,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-04 09:39:07,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-04 09:39:07,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-04 09:39:07,577 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:07,577 INFO L87 Difference]: Start difference. First operand 169 states and 171 transitions. Second operand 79 states. [2018-10-04 09:39:07,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:07,748 INFO L93 Difference]: Finished difference Result 185 states and 189 transitions. [2018-10-04 09:39:07,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-04 09:39:07,748 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 168 [2018-10-04 09:39:07,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:07,749 INFO L225 Difference]: With dead ends: 185 [2018-10-04 09:39:07,749 INFO L226 Difference]: Without dead ends: 171 [2018-10-04 09:39:07,749 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.2s impTime 17 [2018-10-04 09:39:07,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-04 09:39:07,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-04 09:39:07,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-04 09:39:07,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 173 transitions. [2018-10-04 09:39:07,755 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 173 transitions. Word has length 168 [2018-10-04 09:39:07,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:07,755 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 173 transitions. [2018-10-04 09:39:07,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-04 09:39:07,755 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 173 transitions. [2018-10-04 09:39:07,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-04 09:39:07,756 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:07,756 INFO L375 BasicCegarLoop]: trace histogram [78, 77, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:39:07,756 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:07,756 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:07,756 INFO L82 PathProgramCache]: Analyzing trace with hash -799880032, now seen corresponding path program 76 times [2018-10-04 09:39:07,756 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:07,756 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:07,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:07,757 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:07,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:08,105 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:08,463 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:09,210 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:09,537 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:09,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6024 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:09,777 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:09,777 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:09,784 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:39:09,891 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:39:09,892 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:09,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:10,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6024 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:10,166 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:10,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-04 09:39:10,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-04 09:39:10,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-04 09:39:10,167 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:10,167 INFO L87 Difference]: Start difference. First operand 171 states and 173 transitions. Second operand 80 states. [2018-10-04 09:39:10,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:10,350 INFO L93 Difference]: Finished difference Result 187 states and 191 transitions. [2018-10-04 09:39:10,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-04 09:39:10,350 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 170 [2018-10-04 09:39:10,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:10,351 INFO L225 Difference]: With dead ends: 187 [2018-10-04 09:39:10,351 INFO L226 Difference]: Without dead ends: 173 [2018-10-04 09:39:10,351 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.5s impTime 18 [2018-10-04 09:39:10,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-04 09:39:10,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-10-04 09:39:10,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-04 09:39:10,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2018-10-04 09:39:10,358 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 170 [2018-10-04 09:39:10,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:10,358 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 175 transitions. [2018-10-04 09:39:10,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-04 09:39:10,358 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 175 transitions. [2018-10-04 09:39:10,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-04 09:39:10,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:10,359 INFO L375 BasicCegarLoop]: trace histogram [79, 78, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:39:10,359 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:10,359 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:10,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1721269404, now seen corresponding path program 77 times [2018-10-04 09:39:10,360 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:10,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:10,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:10,360 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:10,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:10,730 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:10,973 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:11,127 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:11,393 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:11,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6180 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:11,617 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:11,617 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:11,625 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:39:11,851 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 79 check-sat command(s) [2018-10-04 09:39:11,851 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:11,856 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:12,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6180 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:12,135 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:12,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-04 09:39:12,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-04 09:39:12,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-04 09:39:12,136 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:12,136 INFO L87 Difference]: Start difference. First operand 173 states and 175 transitions. Second operand 81 states. [2018-10-04 09:39:12,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:12,309 INFO L93 Difference]: Finished difference Result 189 states and 193 transitions. [2018-10-04 09:39:12,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-04 09:39:12,309 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 172 [2018-10-04 09:39:12,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:12,310 INFO L225 Difference]: With dead ends: 189 [2018-10-04 09:39:12,310 INFO L226 Difference]: Without dead ends: 175 [2018-10-04 09:39:12,310 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.7s impTime 19 [2018-10-04 09:39:12,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-04 09:39:12,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-04 09:39:12,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-04 09:39:12,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 177 transitions. [2018-10-04 09:39:12,318 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 177 transitions. Word has length 172 [2018-10-04 09:39:12,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:12,319 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 177 transitions. [2018-10-04 09:39:12,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-04 09:39:12,319 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 177 transitions. [2018-10-04 09:39:12,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-04 09:39:12,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:12,320 INFO L375 BasicCegarLoop]: trace histogram [80, 79, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:39:12,320 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:12,320 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:12,320 INFO L82 PathProgramCache]: Analyzing trace with hash -2110644840, now seen corresponding path program 78 times [2018-10-04 09:39:12,320 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:12,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:12,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:12,321 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:12,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:12,510 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:12,719 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:13,017 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:13,503 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:13,899 INFO L134 CoverageAnalysis]: Checked inductivity of 6338 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:13,900 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:13,900 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:13,908 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:39:14,140 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 80 check-sat command(s) [2018-10-04 09:39:14,141 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:14,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:14,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6338 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:14,632 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:14,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-04 09:39:14,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-04 09:39:14,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-04 09:39:14,633 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:14,633 INFO L87 Difference]: Start difference. First operand 175 states and 177 transitions. Second operand 82 states. [2018-10-04 09:39:14,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:14,898 INFO L93 Difference]: Finished difference Result 191 states and 195 transitions. [2018-10-04 09:39:14,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-04 09:39:14,899 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 174 [2018-10-04 09:39:14,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:14,899 INFO L225 Difference]: With dead ends: 191 [2018-10-04 09:39:14,900 INFO L226 Difference]: Without dead ends: 177 [2018-10-04 09:39:14,900 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime 20 [2018-10-04 09:39:14,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-04 09:39:14,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-10-04 09:39:14,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-10-04 09:39:14,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 179 transitions. [2018-10-04 09:39:14,905 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 179 transitions. Word has length 174 [2018-10-04 09:39:14,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:14,905 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 179 transitions. [2018-10-04 09:39:14,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-04 09:39:14,905 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 179 transitions. [2018-10-04 09:39:14,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-04 09:39:14,906 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:14,906 INFO L375 BasicCegarLoop]: trace histogram [81, 80, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:39:14,906 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:14,906 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:14,907 INFO L82 PathProgramCache]: Analyzing trace with hash 501706644, now seen corresponding path program 79 times [2018-10-04 09:39:14,907 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:14,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:14,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:14,908 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:14,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:15,133 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:15,249 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:15,508 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:16,053 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:16,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:16,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:16,531 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:16,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:39:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:16,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:16,928 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:16,949 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:16,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-04 09:39:16,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-04 09:39:16,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-04 09:39:16,950 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:16,950 INFO L87 Difference]: Start difference. First operand 177 states and 179 transitions. Second operand 83 states. [2018-10-04 09:39:17,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:17,217 INFO L93 Difference]: Finished difference Result 193 states and 197 transitions. [2018-10-04 09:39:17,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-04 09:39:17,217 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 176 [2018-10-04 09:39:17,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:17,218 INFO L225 Difference]: With dead ends: 193 [2018-10-04 09:39:17,218 INFO L226 Difference]: Without dead ends: 179 [2018-10-04 09:39:17,218 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.2s impTime 21 [2018-10-04 09:39:17,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-04 09:39:17,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-04 09:39:17,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-04 09:39:17,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 181 transitions. [2018-10-04 09:39:17,223 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 181 transitions. Word has length 176 [2018-10-04 09:39:17,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:17,224 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 181 transitions. [2018-10-04 09:39:17,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-04 09:39:17,224 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 181 transitions. [2018-10-04 09:39:17,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-04 09:39:17,224 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:17,224 INFO L375 BasicCegarLoop]: trace histogram [82, 81, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:39:17,225 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:17,225 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:17,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1584385392, now seen corresponding path program 80 times [2018-10-04 09:39:17,225 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:17,225 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:17,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:17,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:39:17,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:17,427 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:17,555 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:17,795 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:18,394 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:18,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6660 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:18,738 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:18,738 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:18,747 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:39:18,855 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:39:18,855 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:18,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:19,132 INFO L134 CoverageAnalysis]: Checked inductivity of 6660 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:19,152 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:19,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-04 09:39:19,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-04 09:39:19,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-04 09:39:19,154 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:19,154 INFO L87 Difference]: Start difference. First operand 179 states and 181 transitions. Second operand 84 states. [2018-10-04 09:39:19,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:19,412 INFO L93 Difference]: Finished difference Result 195 states and 199 transitions. [2018-10-04 09:39:19,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-04 09:39:19,412 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 178 [2018-10-04 09:39:19,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:19,413 INFO L225 Difference]: With dead ends: 195 [2018-10-04 09:39:19,413 INFO L226 Difference]: Without dead ends: 181 [2018-10-04 09:39:19,413 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime 19 [2018-10-04 09:39:19,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-04 09:39:19,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-04 09:39:19,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-04 09:39:19,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 183 transitions. [2018-10-04 09:39:19,418 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 183 transitions. Word has length 178 [2018-10-04 09:39:19,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:19,419 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 183 transitions. [2018-10-04 09:39:19,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-04 09:39:19,419 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 183 transitions. [2018-10-04 09:39:19,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-04 09:39:19,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:19,420 INFO L375 BasicCegarLoop]: trace histogram [83, 82, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:39:19,420 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:19,420 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:19,420 INFO L82 PathProgramCache]: Analyzing trace with hash -569104756, now seen corresponding path program 81 times [2018-10-04 09:39:19,420 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:19,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:19,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:19,421 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:19,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:19,657 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:19,899 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:20,233 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:20,587 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:20,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:20,739 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:20,739 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:20,748 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:39:21,001 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 83 check-sat command(s) [2018-10-04 09:39:21,002 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:21,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:21,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:21,375 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:21,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-04 09:39:21,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-04 09:39:21,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-04 09:39:21,376 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:21,376 INFO L87 Difference]: Start difference. First operand 181 states and 183 transitions. Second operand 85 states. [2018-10-04 09:39:21,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:21,571 INFO L93 Difference]: Finished difference Result 197 states and 201 transitions. [2018-10-04 09:39:21,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-04 09:39:21,571 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 180 [2018-10-04 09:39:21,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:21,572 INFO L225 Difference]: With dead ends: 197 [2018-10-04 09:39:21,572 INFO L226 Difference]: Without dead ends: 183 [2018-10-04 09:39:21,572 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.9s impTime 22 [2018-10-04 09:39:21,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-04 09:39:21,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-04 09:39:21,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-04 09:39:21,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 185 transitions. [2018-10-04 09:39:21,580 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 185 transitions. Word has length 180 [2018-10-04 09:39:21,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:21,580 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 185 transitions. [2018-10-04 09:39:21,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-04 09:39:21,581 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 185 transitions. [2018-10-04 09:39:21,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-04 09:39:21,581 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:21,582 INFO L375 BasicCegarLoop]: trace histogram [84, 83, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:39:21,582 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:21,582 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:21,582 INFO L82 PathProgramCache]: Analyzing trace with hash 158010248, now seen corresponding path program 82 times [2018-10-04 09:39:21,582 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:21,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:21,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:21,583 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:21,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:21,799 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:21,917 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:22,141 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:22,680 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:23,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6990 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:23,251 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:23,251 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:23,258 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:39:23,375 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:39:23,375 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:23,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:23,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6990 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:23,676 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:23,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-04 09:39:23,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-04 09:39:23,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-04 09:39:23,678 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:23,678 INFO L87 Difference]: Start difference. First operand 183 states and 185 transitions. Second operand 86 states. [2018-10-04 09:39:23,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:23,952 INFO L93 Difference]: Finished difference Result 199 states and 203 transitions. [2018-10-04 09:39:23,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-04 09:39:23,953 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 182 [2018-10-04 09:39:23,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:23,954 INFO L225 Difference]: With dead ends: 199 [2018-10-04 09:39:23,954 INFO L226 Difference]: Without dead ends: 185 [2018-10-04 09:39:23,954 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.3s impTime 24 [2018-10-04 09:39:23,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-04 09:39:23,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-10-04 09:39:23,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-04 09:39:23,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 187 transitions. [2018-10-04 09:39:23,960 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 187 transitions. Word has length 182 [2018-10-04 09:39:23,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:23,960 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 187 transitions. [2018-10-04 09:39:23,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-04 09:39:23,960 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 187 transitions. [2018-10-04 09:39:23,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-04 09:39:23,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:23,961 INFO L375 BasicCegarLoop]: trace histogram [85, 84, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:39:23,961 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:23,961 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:23,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1164140156, now seen corresponding path program 83 times [2018-10-04 09:39:23,962 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:23,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:23,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:23,962 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:23,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:24,192 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:24,435 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:24,753 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:25,298 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:25,918 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:25,918 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:25,942 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:39:26,192 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 85 check-sat command(s) [2018-10-04 09:39:26,192 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:26,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:26,493 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:26,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-04 09:39:26,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-04 09:39:26,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-04 09:39:26,494 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:26,494 INFO L87 Difference]: Start difference. First operand 185 states and 187 transitions. Second operand 87 states. [2018-10-04 09:39:26,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:26,777 INFO L93 Difference]: Finished difference Result 201 states and 205 transitions. [2018-10-04 09:39:26,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-04 09:39:26,778 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 184 [2018-10-04 09:39:26,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:26,779 INFO L225 Difference]: With dead ends: 201 [2018-10-04 09:39:26,779 INFO L226 Difference]: Without dead ends: 187 [2018-10-04 09:39:26,779 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 24 [2018-10-04 09:39:26,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-04 09:39:26,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-04 09:39:26,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-04 09:39:26,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 189 transitions. [2018-10-04 09:39:26,786 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 189 transitions. Word has length 184 [2018-10-04 09:39:26,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:26,787 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 189 transitions. [2018-10-04 09:39:26,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-04 09:39:26,787 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 189 transitions. [2018-10-04 09:39:26,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-04 09:39:26,788 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:26,788 INFO L375 BasicCegarLoop]: trace histogram [86, 85, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:39:26,788 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:26,788 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:26,788 INFO L82 PathProgramCache]: Analyzing trace with hash -440358784, now seen corresponding path program 84 times [2018-10-04 09:39:26,788 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:26,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:26,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:26,789 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:26,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:27,006 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:27,133 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:27,414 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:27,951 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 7328 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:28,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:28,402 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:28,410 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:39:28,660 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 86 check-sat command(s) [2018-10-04 09:39:28,660 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:28,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 7328 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:28,967 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:28,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-04 09:39:28,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-04 09:39:28,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-04 09:39:28,968 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:28,968 INFO L87 Difference]: Start difference. First operand 187 states and 189 transitions. Second operand 88 states. [2018-10-04 09:39:29,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:29,214 INFO L93 Difference]: Finished difference Result 203 states and 207 transitions. [2018-10-04 09:39:29,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-04 09:39:29,214 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 186 [2018-10-04 09:39:29,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:29,215 INFO L225 Difference]: With dead ends: 203 [2018-10-04 09:39:29,215 INFO L226 Difference]: Without dead ends: 189 [2018-10-04 09:39:29,215 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 23 [2018-10-04 09:39:29,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-04 09:39:29,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-10-04 09:39:29,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-04 09:39:29,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 191 transitions. [2018-10-04 09:39:29,235 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 191 transitions. Word has length 186 [2018-10-04 09:39:29,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:29,236 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 191 transitions. [2018-10-04 09:39:29,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-04 09:39:29,236 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 191 transitions. [2018-10-04 09:39:29,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-04 09:39:29,237 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:29,237 INFO L375 BasicCegarLoop]: trace histogram [87, 86, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:39:29,237 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:29,237 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:29,238 INFO L82 PathProgramCache]: Analyzing trace with hash -671162244, now seen corresponding path program 85 times [2018-10-04 09:39:29,238 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:29,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:29,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:29,238 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:29,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:29,482 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:29,957 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:30,291 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:30,483 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:30,740 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:30,802 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:30,803 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:30,803 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:30,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:39:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:30,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:31,214 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:31,235 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:31,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-04 09:39:31,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-04 09:39:31,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-04 09:39:31,236 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:31,236 INFO L87 Difference]: Start difference. First operand 189 states and 191 transitions. Second operand 89 states. [2018-10-04 09:39:31,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:31,434 INFO L93 Difference]: Finished difference Result 205 states and 209 transitions. [2018-10-04 09:39:31,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-04 09:39:31,434 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 188 [2018-10-04 09:39:31,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:31,435 INFO L225 Difference]: With dead ends: 205 [2018-10-04 09:39:31,435 INFO L226 Difference]: Without dead ends: 191 [2018-10-04 09:39:31,436 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 9 [2018-10-04 09:39:31,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-04 09:39:31,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-04 09:39:31,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-04 09:39:31,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 193 transitions. [2018-10-04 09:39:31,442 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 193 transitions. Word has length 188 [2018-10-04 09:39:31,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:31,442 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 193 transitions. [2018-10-04 09:39:31,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-04 09:39:31,443 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 193 transitions. [2018-10-04 09:39:31,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-04 09:39:31,443 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:31,443 INFO L375 BasicCegarLoop]: trace histogram [88, 87, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:39:31,443 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:31,444 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:31,444 INFO L82 PathProgramCache]: Analyzing trace with hash 865012088, now seen corresponding path program 86 times [2018-10-04 09:39:31,444 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:31,444 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:31,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:31,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:39:31,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:31,634 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:31,837 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:32,192 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:32,692 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:33,314 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:33,449 INFO L134 CoverageAnalysis]: Checked inductivity of 7674 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:33,450 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:33,450 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:33,457 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:39:33,578 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:39:33,579 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:33,583 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 7674 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:33,887 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:33,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-04 09:39:33,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-04 09:39:33,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-04 09:39:33,888 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:33,888 INFO L87 Difference]: Start difference. First operand 191 states and 193 transitions. Second operand 90 states. [2018-10-04 09:39:34,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:34,196 INFO L93 Difference]: Finished difference Result 207 states and 211 transitions. [2018-10-04 09:39:34,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-04 09:39:34,197 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 190 [2018-10-04 09:39:34,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:34,198 INFO L225 Difference]: With dead ends: 207 [2018-10-04 09:39:34,198 INFO L226 Difference]: Without dead ends: 193 [2018-10-04 09:39:34,198 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime 11 [2018-10-04 09:39:34,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-04 09:39:34,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-10-04 09:39:34,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-04 09:39:34,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 195 transitions. [2018-10-04 09:39:34,203 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 195 transitions. Word has length 190 [2018-10-04 09:39:34,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:34,204 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 195 transitions. [2018-10-04 09:39:34,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-04 09:39:34,204 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 195 transitions. [2018-10-04 09:39:34,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-04 09:39:34,204 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:34,204 INFO L375 BasicCegarLoop]: trace histogram [89, 88, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:39:34,205 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:34,205 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:34,205 INFO L82 PathProgramCache]: Analyzing trace with hash -340204684, now seen corresponding path program 87 times [2018-10-04 09:39:34,205 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:34,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:34,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:34,206 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:34,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:34,529 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:35,024 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:35,328 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:35,853 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:36,026 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:36,096 INFO L134 CoverageAnalysis]: Checked inductivity of 7850 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:36,096 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:36,096 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:36,117 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:39:36,399 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 89 check-sat command(s) [2018-10-04 09:39:36,399 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:36,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:36,690 INFO L134 CoverageAnalysis]: Checked inductivity of 7850 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:36,711 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:36,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-04 09:39:36,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-04 09:39:36,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-04 09:39:36,712 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:36,712 INFO L87 Difference]: Start difference. First operand 193 states and 195 transitions. Second operand 91 states. [2018-10-04 09:39:36,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:36,935 INFO L93 Difference]: Finished difference Result 209 states and 213 transitions. [2018-10-04 09:39:36,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-04 09:39:36,935 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 192 [2018-10-04 09:39:36,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:36,936 INFO L225 Difference]: With dead ends: 209 [2018-10-04 09:39:36,936 INFO L226 Difference]: Without dead ends: 195 [2018-10-04 09:39:36,936 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime 11 [2018-10-04 09:39:36,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-04 09:39:36,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-04 09:39:36,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-04 09:39:36,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 197 transitions. [2018-10-04 09:39:36,942 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 197 transitions. Word has length 192 [2018-10-04 09:39:36,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:36,942 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 197 transitions. [2018-10-04 09:39:36,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-04 09:39:36,942 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 197 transitions. [2018-10-04 09:39:36,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-04 09:39:36,943 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:36,943 INFO L375 BasicCegarLoop]: trace histogram [90, 89, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:39:36,943 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:36,943 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:36,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1087647344, now seen corresponding path program 88 times [2018-10-04 09:39:36,943 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:36,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:36,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:36,944 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:36,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:37,230 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:37,453 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:37,813 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:38,348 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:39,035 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:39,145 INFO L134 CoverageAnalysis]: Checked inductivity of 8028 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:39,145 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:39,145 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:39,155 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:39:39,280 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:39:39,280 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:39,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 8028 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:39,620 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:39,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-04 09:39:39,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-04 09:39:39,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-04 09:39:39,622 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:39,622 INFO L87 Difference]: Start difference. First operand 195 states and 197 transitions. Second operand 92 states. [2018-10-04 09:39:39,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:39,982 INFO L93 Difference]: Finished difference Result 211 states and 215 transitions. [2018-10-04 09:39:39,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-04 09:39:39,983 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 194 [2018-10-04 09:39:39,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:39,983 INFO L225 Difference]: With dead ends: 211 [2018-10-04 09:39:39,984 INFO L226 Difference]: Without dead ends: 197 [2018-10-04 09:39:39,984 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.7s impTime 10 [2018-10-04 09:39:39,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-10-04 09:39:39,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-10-04 09:39:39,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-04 09:39:39,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 199 transitions. [2018-10-04 09:39:39,991 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 199 transitions. Word has length 194 [2018-10-04 09:39:39,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:39,991 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 199 transitions. [2018-10-04 09:39:39,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-04 09:39:39,992 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 199 transitions. [2018-10-04 09:39:39,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-04 09:39:39,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:39,993 INFO L375 BasicCegarLoop]: trace histogram [91, 90, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:39:39,993 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:39,993 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:39,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1136088468, now seen corresponding path program 89 times [2018-10-04 09:39:39,993 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:39,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:39,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:39,994 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:39,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:40,287 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:40,436 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:40,689 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:41,118 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:41,658 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:41,891 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:41,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:41,891 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:41,900 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:39:42,170 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 91 check-sat command(s) [2018-10-04 09:39:42,171 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:42,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:42,494 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:42,515 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:42,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-04 09:39:42,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-04 09:39:42,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-04 09:39:42,516 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:42,516 INFO L87 Difference]: Start difference. First operand 197 states and 199 transitions. Second operand 93 states. [2018-10-04 09:39:42,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:42,836 INFO L93 Difference]: Finished difference Result 213 states and 217 transitions. [2018-10-04 09:39:42,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-04 09:39:42,836 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 196 [2018-10-04 09:39:42,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:42,837 INFO L225 Difference]: With dead ends: 213 [2018-10-04 09:39:42,837 INFO L226 Difference]: Without dead ends: 199 [2018-10-04 09:39:42,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime 14 [2018-10-04 09:39:42,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-04 09:39:42,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-04 09:39:42,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-04 09:39:42,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 201 transitions. [2018-10-04 09:39:42,843 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 201 transitions. Word has length 196 [2018-10-04 09:39:42,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:42,843 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 201 transitions. [2018-10-04 09:39:42,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-04 09:39:42,843 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 201 transitions. [2018-10-04 09:39:42,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-04 09:39:42,844 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:42,844 INFO L375 BasicCegarLoop]: trace histogram [92, 91, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:39:42,844 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:42,845 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:42,845 INFO L82 PathProgramCache]: Analyzing trace with hash 747509608, now seen corresponding path program 90 times [2018-10-04 09:39:42,845 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:42,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:42,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:42,845 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:42,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:43,066 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:43,185 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:43,375 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:43,738 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:44,217 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:44,462 INFO L134 CoverageAnalysis]: Checked inductivity of 8390 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:44,463 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:44,463 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:44,469 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:39:44,749 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 92 check-sat command(s) [2018-10-04 09:39:44,749 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:44,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 8390 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:45,311 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:45,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-04 09:39:45,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-04 09:39:45,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-04 09:39:45,312 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:45,312 INFO L87 Difference]: Start difference. First operand 199 states and 201 transitions. Second operand 94 states. [2018-10-04 09:39:45,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:45,634 INFO L93 Difference]: Finished difference Result 215 states and 219 transitions. [2018-10-04 09:39:45,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-04 09:39:45,635 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 198 [2018-10-04 09:39:45,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:45,636 INFO L225 Difference]: With dead ends: 215 [2018-10-04 09:39:45,636 INFO L226 Difference]: Without dead ends: 201 [2018-10-04 09:39:45,636 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.1s impTime 15 [2018-10-04 09:39:45,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-04 09:39:45,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-10-04 09:39:45,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-10-04 09:39:45,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 203 transitions. [2018-10-04 09:39:45,642 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 203 transitions. Word has length 198 [2018-10-04 09:39:45,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:45,642 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 203 transitions. [2018-10-04 09:39:45,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-04 09:39:45,642 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 203 transitions. [2018-10-04 09:39:45,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-04 09:39:45,642 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:45,643 INFO L375 BasicCegarLoop]: trace histogram [93, 92, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:39:45,643 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:45,643 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:45,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1590938268, now seen corresponding path program 91 times [2018-10-04 09:39:45,643 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:45,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:45,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:45,644 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:45,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:45,850 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:46,001 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:46,279 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:46,709 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:47,258 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:47,570 INFO L134 CoverageAnalysis]: Checked inductivity of 8574 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:47,570 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:47,570 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:47,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:39:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:47,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:48,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8574 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:48,091 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:48,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-04 09:39:48,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-04 09:39:48,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-04 09:39:48,092 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:48,092 INFO L87 Difference]: Start difference. First operand 201 states and 203 transitions. Second operand 95 states. [2018-10-04 09:39:48,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:48,458 INFO L93 Difference]: Finished difference Result 217 states and 221 transitions. [2018-10-04 09:39:48,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-04 09:39:48,458 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 200 [2018-10-04 09:39:48,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:48,459 INFO L225 Difference]: With dead ends: 217 [2018-10-04 09:39:48,460 INFO L226 Difference]: Without dead ends: 203 [2018-10-04 09:39:48,460 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 16 [2018-10-04 09:39:48,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-04 09:39:48,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-04 09:39:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-04 09:39:48,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 205 transitions. [2018-10-04 09:39:48,465 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 205 transitions. Word has length 200 [2018-10-04 09:39:48,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:48,466 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 205 transitions. [2018-10-04 09:39:48,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-04 09:39:48,466 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 205 transitions. [2018-10-04 09:39:48,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-04 09:39:48,466 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:48,467 INFO L375 BasicCegarLoop]: trace histogram [94, 93, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:39:48,467 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:48,467 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:48,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1723516000, now seen corresponding path program 92 times [2018-10-04 09:39:48,467 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:48,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:48,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:48,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:39:48,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:48,732 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:48,965 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:49,334 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:49,885 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:50,882 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:51,166 INFO L134 CoverageAnalysis]: Checked inductivity of 8760 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:51,166 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:51,166 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:51,174 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:39:51,307 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:39:51,307 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:51,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:51,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8760 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:51,643 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:51,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-04 09:39:51,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-04 09:39:51,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-04 09:39:51,644 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:51,645 INFO L87 Difference]: Start difference. First operand 203 states and 205 transitions. Second operand 96 states. [2018-10-04 09:39:52,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:52,020 INFO L93 Difference]: Finished difference Result 219 states and 223 transitions. [2018-10-04 09:39:52,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-04 09:39:52,020 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 202 [2018-10-04 09:39:52,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:52,021 INFO L225 Difference]: With dead ends: 219 [2018-10-04 09:39:52,021 INFO L226 Difference]: Without dead ends: 205 [2018-10-04 09:39:52,021 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.2s impTime 14 [2018-10-04 09:39:52,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-10-04 09:39:52,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-10-04 09:39:52,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-04 09:39:52,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 207 transitions. [2018-10-04 09:39:52,027 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 207 transitions. Word has length 202 [2018-10-04 09:39:52,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:52,027 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 207 transitions. [2018-10-04 09:39:52,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-04 09:39:52,027 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 207 transitions. [2018-10-04 09:39:52,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-04 09:39:52,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:52,028 INFO L375 BasicCegarLoop]: trace histogram [95, 94, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:39:52,028 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:52,029 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:52,029 INFO L82 PathProgramCache]: Analyzing trace with hash 48333916, now seen corresponding path program 93 times [2018-10-04 09:39:52,029 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:52,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:52,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:52,029 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:52,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:52,270 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:52,481 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:52,798 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:53,344 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:53,524 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:53,691 INFO L134 CoverageAnalysis]: Checked inductivity of 8948 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:53,692 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:53,692 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:53,700 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:39:54,022 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 95 check-sat command(s) [2018-10-04 09:39:54,023 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:54,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 8948 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:54,361 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:54,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-04 09:39:54,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-04 09:39:54,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-04 09:39:54,362 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:54,362 INFO L87 Difference]: Start difference. First operand 205 states and 207 transitions. Second operand 97 states. [2018-10-04 09:39:54,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:54,627 INFO L93 Difference]: Finished difference Result 221 states and 225 transitions. [2018-10-04 09:39:54,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-04 09:39:54,627 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 204 [2018-10-04 09:39:54,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:54,628 INFO L225 Difference]: With dead ends: 221 [2018-10-04 09:39:54,628 INFO L226 Difference]: Without dead ends: 207 [2018-10-04 09:39:54,628 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime 17 [2018-10-04 09:39:54,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-04 09:39:54,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-10-04 09:39:54,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-04 09:39:54,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 209 transitions. [2018-10-04 09:39:54,636 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 209 transitions. Word has length 204 [2018-10-04 09:39:54,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:54,636 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 209 transitions. [2018-10-04 09:39:54,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-04 09:39:54,636 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 209 transitions. [2018-10-04 09:39:54,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-04 09:39:54,637 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:54,638 INFO L375 BasicCegarLoop]: trace histogram [96, 95, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:39:54,638 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:54,638 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:54,638 INFO L82 PathProgramCache]: Analyzing trace with hash 811087192, now seen corresponding path program 94 times [2018-10-04 09:39:54,638 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:54,638 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:54,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:54,639 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:54,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:54,853 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:55,058 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:55,638 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:56,122 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:56,721 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:57,178 INFO L134 CoverageAnalysis]: Checked inductivity of 9138 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:57,178 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:57,179 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:57,190 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:39:57,326 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:39:57,327 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:57,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:57,665 INFO L134 CoverageAnalysis]: Checked inductivity of 9138 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:57,686 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:57,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-04 09:39:57,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-04 09:39:57,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-04 09:39:57,687 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:57,687 INFO L87 Difference]: Start difference. First operand 207 states and 209 transitions. Second operand 98 states. [2018-10-04 09:39:58,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:58,067 INFO L93 Difference]: Finished difference Result 223 states and 227 transitions. [2018-10-04 09:39:58,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-04 09:39:58,067 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 206 [2018-10-04 09:39:58,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:58,068 INFO L225 Difference]: With dead ends: 223 [2018-10-04 09:39:58,068 INFO L226 Difference]: Without dead ends: 209 [2018-10-04 09:39:58,069 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.0s impTime 19 [2018-10-04 09:39:58,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-04 09:39:58,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-10-04 09:39:58,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-04 09:39:58,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 211 transitions. [2018-10-04 09:39:58,075 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 211 transitions. Word has length 206 [2018-10-04 09:39:58,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:58,075 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 211 transitions. [2018-10-04 09:39:58,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-04 09:39:58,075 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 211 transitions. [2018-10-04 09:39:58,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-04 09:39:58,076 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:58,076 INFO L375 BasicCegarLoop]: trace histogram [97, 96, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:39:58,076 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:58,076 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:58,076 INFO L82 PathProgramCache]: Analyzing trace with hash -622422188, now seen corresponding path program 95 times [2018-10-04 09:39:58,076 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:58,076 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:58,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:58,077 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:58,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:58,312 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:58,538 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:58,876 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:59,077 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:59,339 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:59,597 INFO L134 CoverageAnalysis]: Checked inductivity of 9330 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:39:59,597 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:59,598 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:59,605 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:39:59,908 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 97 check-sat command(s) [2018-10-04 09:39:59,909 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:59,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:00,305 INFO L134 CoverageAnalysis]: Checked inductivity of 9330 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:00,326 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:00,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-04 09:40:00,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-04 09:40:00,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-04 09:40:00,327 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:00,327 INFO L87 Difference]: Start difference. First operand 209 states and 211 transitions. Second operand 99 states. [2018-10-04 09:40:00,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:00,555 INFO L93 Difference]: Finished difference Result 225 states and 229 transitions. [2018-10-04 09:40:00,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-04 09:40:00,555 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 208 [2018-10-04 09:40:00,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:00,556 INFO L225 Difference]: With dead ends: 225 [2018-10-04 09:40:00,556 INFO L226 Difference]: Without dead ends: 211 [2018-10-04 09:40:00,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.0s impTime 19 [2018-10-04 09:40:00,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-04 09:40:00,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-04 09:40:00,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-04 09:40:00,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 213 transitions. [2018-10-04 09:40:00,563 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 213 transitions. Word has length 208 [2018-10-04 09:40:00,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:00,563 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 213 transitions. [2018-10-04 09:40:00,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-04 09:40:00,563 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 213 transitions. [2018-10-04 09:40:00,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-04 09:40:00,564 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:00,564 INFO L375 BasicCegarLoop]: trace histogram [98, 97, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:40:00,564 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:00,564 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:00,564 INFO L82 PathProgramCache]: Analyzing trace with hash 459565648, now seen corresponding path program 96 times [2018-10-04 09:40:00,564 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:00,564 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:00,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:00,565 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:40:00,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:00,799 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:00,930 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:01,216 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:01,773 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:02,292 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:02,508 INFO L134 CoverageAnalysis]: Checked inductivity of 9524 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:02,509 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:02,509 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:40:02,516 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:40:02,829 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 98 check-sat command(s) [2018-10-04 09:40:02,829 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:40:02,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:03,181 INFO L134 CoverageAnalysis]: Checked inductivity of 9524 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:03,202 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:03,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-04 09:40:03,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-04 09:40:03,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-04 09:40:03,203 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:03,203 INFO L87 Difference]: Start difference. First operand 211 states and 213 transitions. Second operand 100 states. [2018-10-04 09:40:03,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:03,544 INFO L93 Difference]: Finished difference Result 227 states and 231 transitions. [2018-10-04 09:40:03,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-04 09:40:03,545 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 210 [2018-10-04 09:40:03,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:03,545 INFO L225 Difference]: With dead ends: 227 [2018-10-04 09:40:03,546 INFO L226 Difference]: Without dead ends: 213 [2018-10-04 09:40:03,546 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime 18 [2018-10-04 09:40:03,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-04 09:40:03,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-10-04 09:40:03,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-04 09:40:03,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 215 transitions. [2018-10-04 09:40:03,555 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 215 transitions. Word has length 210 [2018-10-04 09:40:03,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:03,555 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 215 transitions. [2018-10-04 09:40:03,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-04 09:40:03,555 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 215 transitions. [2018-10-04 09:40:03,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-04 09:40:03,556 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:03,556 INFO L375 BasicCegarLoop]: trace histogram [99, 98, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:40:03,556 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:03,557 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:03,557 INFO L82 PathProgramCache]: Analyzing trace with hash 867790412, now seen corresponding path program 97 times [2018-10-04 09:40:03,557 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:03,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:03,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:03,558 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:40:03,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:03,865 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:04,035 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:04,230 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:04,787 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:05,749 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:06,114 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:06,114 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:40:06,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:40:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:06,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:06,600 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:06,620 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:06,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-04 09:40:06,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-04 09:40:06,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-04 09:40:06,622 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:06,622 INFO L87 Difference]: Start difference. First operand 213 states and 215 transitions. Second operand 101 states. [2018-10-04 09:40:06,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:06,962 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2018-10-04 09:40:06,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-04 09:40:06,963 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 212 [2018-10-04 09:40:06,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:06,964 INFO L225 Difference]: With dead ends: 229 [2018-10-04 09:40:06,964 INFO L226 Difference]: Without dead ends: 215 [2018-10-04 09:40:06,964 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.0s impTime 21 [2018-10-04 09:40:06,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-04 09:40:06,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-10-04 09:40:06,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-04 09:40:06,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 217 transitions. [2018-10-04 09:40:06,973 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 217 transitions. Word has length 212 [2018-10-04 09:40:06,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:06,973 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 217 transitions. [2018-10-04 09:40:06,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-04 09:40:06,974 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 217 transitions. [2018-10-04 09:40:06,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-04 09:40:06,974 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:06,974 INFO L375 BasicCegarLoop]: trace histogram [100, 99, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:40:06,975 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:06,975 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:06,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1965202616, now seen corresponding path program 98 times [2018-10-04 09:40:06,975 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:06,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:06,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:06,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:40:06,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:07,228 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:07,349 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:07,578 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:08,134 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:08,775 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:09,114 INFO L134 CoverageAnalysis]: Checked inductivity of 9918 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:09,114 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:09,114 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:40:09,122 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:40:09,266 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:40:09,266 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:40:09,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 9918 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:09,627 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:09,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-04 09:40:09,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-04 09:40:09,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-04 09:40:09,629 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:09,629 INFO L87 Difference]: Start difference. First operand 215 states and 217 transitions. Second operand 102 states. [2018-10-04 09:40:10,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:10,032 INFO L93 Difference]: Finished difference Result 231 states and 235 transitions. [2018-10-04 09:40:10,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-04 09:40:10,032 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 214 [2018-10-04 09:40:10,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:10,034 INFO L225 Difference]: With dead ends: 231 [2018-10-04 09:40:10,034 INFO L226 Difference]: Without dead ends: 217 [2018-10-04 09:40:10,034 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.6s impTime 23 [2018-10-04 09:40:10,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-04 09:40:10,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-10-04 09:40:10,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-10-04 09:40:10,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 219 transitions. [2018-10-04 09:40:10,043 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 219 transitions. Word has length 214 [2018-10-04 09:40:10,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:10,043 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 219 transitions. [2018-10-04 09:40:10,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-04 09:40:10,043 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 219 transitions. [2018-10-04 09:40:10,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-04 09:40:10,044 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:10,044 INFO L375 BasicCegarLoop]: trace histogram [101, 100, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:40:10,044 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:10,044 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:10,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1462236860, now seen corresponding path program 99 times [2018-10-04 09:40:10,044 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:10,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:10,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:10,045 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:40:10,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:10,390 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:10,846 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:11,186 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:11,548 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:11,770 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:12,059 INFO L134 CoverageAnalysis]: Checked inductivity of 10118 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:12,059 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:12,059 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:40:12,066 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:40:12,422 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 101 check-sat command(s) [2018-10-04 09:40:12,423 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:40:12,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:12,768 INFO L134 CoverageAnalysis]: Checked inductivity of 10118 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:12,788 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:12,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-04 09:40:12,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-04 09:40:12,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-04 09:40:12,790 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:12,790 INFO L87 Difference]: Start difference. First operand 217 states and 219 transitions. Second operand 103 states. [2018-10-04 09:40:13,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:13,096 INFO L93 Difference]: Finished difference Result 233 states and 237 transitions. [2018-10-04 09:40:13,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-04 09:40:13,096 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 216 [2018-10-04 09:40:13,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:13,097 INFO L225 Difference]: With dead ends: 233 [2018-10-04 09:40:13,097 INFO L226 Difference]: Without dead ends: 219 [2018-10-04 09:40:13,097 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 23 [2018-10-04 09:40:13,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-04 09:40:13,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-10-04 09:40:13,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-04 09:40:13,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 221 transitions. [2018-10-04 09:40:13,105 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 221 transitions. Word has length 216 [2018-10-04 09:40:13,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:13,106 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 221 transitions. [2018-10-04 09:40:13,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-04 09:40:13,106 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 221 transitions. [2018-10-04 09:40:13,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-04 09:40:13,107 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:13,107 INFO L375 BasicCegarLoop]: trace histogram [102, 101, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:40:13,107 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:13,107 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:13,107 INFO L82 PathProgramCache]: Analyzing trace with hash 851517504, now seen corresponding path program 100 times [2018-10-04 09:40:13,108 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:13,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:13,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:13,108 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:40:13,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:13,374 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:13,506 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:13,757 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:14,180 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:14,758 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:15,359 INFO L134 CoverageAnalysis]: Checked inductivity of 10320 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:15,359 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:15,359 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:40:15,366 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:40:15,509 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:40:15,509 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:40:15,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:16,221 INFO L134 CoverageAnalysis]: Checked inductivity of 10320 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:16,242 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:16,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-04 09:40:16,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-04 09:40:16,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-04 09:40:16,244 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:16,244 INFO L87 Difference]: Start difference. First operand 219 states and 221 transitions. Second operand 104 states. [2018-10-04 09:40:16,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:16,667 INFO L93 Difference]: Finished difference Result 235 states and 239 transitions. [2018-10-04 09:40:16,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-04 09:40:16,667 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 218 [2018-10-04 09:40:16,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:16,668 INFO L225 Difference]: With dead ends: 235 [2018-10-04 09:40:16,668 INFO L226 Difference]: Without dead ends: 221 [2018-10-04 09:40:16,668 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 1.7s impTime 22 [2018-10-04 09:40:16,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-04 09:40:16,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-10-04 09:40:16,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-04 09:40:16,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 223 transitions. [2018-10-04 09:40:16,674 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 223 transitions. Word has length 218 [2018-10-04 09:40:16,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:16,674 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 223 transitions. [2018-10-04 09:40:16,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-04 09:40:16,675 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 223 transitions. [2018-10-04 09:40:16,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-04 09:40:16,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:16,676 INFO L375 BasicCegarLoop]: trace histogram [103, 102, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:40:16,676 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:16,676 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:16,676 INFO L82 PathProgramCache]: Analyzing trace with hash -423598020, now seen corresponding path program 101 times [2018-10-04 09:40:16,676 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:16,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:16,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:16,677 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:40:16,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:16,996 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:17,114 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:17,345 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:17,883 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:18,551 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:19,020 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 10524 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:19,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:19,061 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:40:19,069 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:40:19,410 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 103 check-sat command(s) [2018-10-04 09:40:19,410 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:40:19,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:19,759 INFO L134 CoverageAnalysis]: Checked inductivity of 10524 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:19,780 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:19,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-04 09:40:19,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-04 09:40:19,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-04 09:40:19,781 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:19,782 INFO L87 Difference]: Start difference. First operand 221 states and 223 transitions. Second operand 105 states. [2018-10-04 09:40:20,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:20,204 INFO L93 Difference]: Finished difference Result 237 states and 241 transitions. [2018-10-04 09:40:20,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-04 09:40:20,204 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 220 [2018-10-04 09:40:20,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:20,205 INFO L225 Difference]: With dead ends: 237 [2018-10-04 09:40:20,205 INFO L226 Difference]: Without dead ends: 223 [2018-10-04 09:40:20,205 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime 8 [2018-10-04 09:40:20,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-04 09:40:20,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-10-04 09:40:20,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-04 09:40:20,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 225 transitions. [2018-10-04 09:40:20,214 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 225 transitions. Word has length 220 [2018-10-04 09:40:20,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:20,214 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 225 transitions. [2018-10-04 09:40:20,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-04 09:40:20,214 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 225 transitions. [2018-10-04 09:40:20,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-04 09:40:20,215 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:20,215 INFO L375 BasicCegarLoop]: trace histogram [104, 103, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:40:20,215 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:20,216 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:20,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1743937224, now seen corresponding path program 102 times [2018-10-04 09:40:20,216 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:20,216 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:20,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:20,217 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:40:20,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:20,511 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:20,813 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:21,306 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:21,817 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:22,435 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:23,191 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:23,321 INFO L134 CoverageAnalysis]: Checked inductivity of 10730 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:23,321 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:23,321 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:40:23,328 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:40:23,674 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 104 check-sat command(s) [2018-10-04 09:40:23,675 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:40:23,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:24,057 INFO L134 CoverageAnalysis]: Checked inductivity of 10730 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:24,078 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:24,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-04 09:40:24,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-04 09:40:24,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-04 09:40:24,079 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:24,079 INFO L87 Difference]: Start difference. First operand 223 states and 225 transitions. Second operand 106 states. [2018-10-04 09:40:24,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:24,553 INFO L93 Difference]: Finished difference Result 239 states and 243 transitions. [2018-10-04 09:40:24,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-04 09:40:24,553 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 222 [2018-10-04 09:40:24,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:24,554 INFO L225 Difference]: With dead ends: 239 [2018-10-04 09:40:24,554 INFO L226 Difference]: Without dead ends: 225 [2018-10-04 09:40:24,554 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.4s impTime 10 [2018-10-04 09:40:24,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-10-04 09:40:24,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-10-04 09:40:24,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-04 09:40:24,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 227 transitions. [2018-10-04 09:40:24,561 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 227 transitions. Word has length 222 [2018-10-04 09:40:24,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:24,562 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 227 transitions. [2018-10-04 09:40:24,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-04 09:40:24,562 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 227 transitions. [2018-10-04 09:40:24,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-04 09:40:24,562 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:24,563 INFO L375 BasicCegarLoop]: trace histogram [105, 104, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:40:24,563 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:24,563 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:24,563 INFO L82 PathProgramCache]: Analyzing trace with hash 720407348, now seen corresponding path program 103 times [2018-10-04 09:40:24,563 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:24,563 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:24,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:24,564 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:40:24,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:24,804 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:25,043 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:25,179 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:25,437 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:25,857 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:26,615 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:26,719 INFO L134 CoverageAnalysis]: Checked inductivity of 10938 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:26,720 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:26,720 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:40:26,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:40:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:26,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 10938 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:27,308 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:27,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-04 09:40:27,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-04 09:40:27,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-04 09:40:27,310 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:27,310 INFO L87 Difference]: Start difference. First operand 225 states and 227 transitions. Second operand 107 states. [2018-10-04 09:40:27,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:27,657 INFO L93 Difference]: Finished difference Result 241 states and 245 transitions. [2018-10-04 09:40:27,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-04 09:40:27,658 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 224 [2018-10-04 09:40:27,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:27,658 INFO L225 Difference]: With dead ends: 241 [2018-10-04 09:40:27,658 INFO L226 Difference]: Without dead ends: 227 [2018-10-04 09:40:27,659 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.5s impTime 10 [2018-10-04 09:40:27,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-04 09:40:27,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-10-04 09:40:27,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-04 09:40:27,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 229 transitions. [2018-10-04 09:40:27,667 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 229 transitions. Word has length 224 [2018-10-04 09:40:27,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:27,667 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 229 transitions. [2018-10-04 09:40:27,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-04 09:40:27,667 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 229 transitions. [2018-10-04 09:40:27,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-04 09:40:27,668 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:27,668 INFO L375 BasicCegarLoop]: trace histogram [106, 105, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:40:27,668 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:27,668 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:27,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1866406352, now seen corresponding path program 104 times [2018-10-04 09:40:27,668 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:27,668 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:27,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:27,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:40:27,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:27,953 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:28,180 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:28,506 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:28,676 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:28,998 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:29,447 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:29,519 INFO L134 CoverageAnalysis]: Checked inductivity of 11148 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:29,519 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:29,519 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:40:29,530 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:40:29,679 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:40:29,679 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:40:29,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:30,042 INFO L134 CoverageAnalysis]: Checked inductivity of 11148 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:30,062 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:30,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-04 09:40:30,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-04 09:40:30,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-04 09:40:30,064 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:30,064 INFO L87 Difference]: Start difference. First operand 227 states and 229 transitions. Second operand 108 states. [2018-10-04 09:40:30,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:30,398 INFO L93 Difference]: Finished difference Result 243 states and 247 transitions. [2018-10-04 09:40:30,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-04 09:40:30,399 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 226 [2018-10-04 09:40:30,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:30,399 INFO L225 Difference]: With dead ends: 243 [2018-10-04 09:40:30,399 INFO L226 Difference]: Without dead ends: 229 [2018-10-04 09:40:30,399 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime 9 [2018-10-04 09:40:30,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-10-04 09:40:30,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-10-04 09:40:30,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-10-04 09:40:30,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 231 transitions. [2018-10-04 09:40:30,405 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 231 transitions. Word has length 226 [2018-10-04 09:40:30,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:30,406 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 231 transitions. [2018-10-04 09:40:30,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-04 09:40:30,406 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 231 transitions. [2018-10-04 09:40:30,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-04 09:40:30,406 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:30,406 INFO L375 BasicCegarLoop]: trace histogram [107, 106, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:40:30,407 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:30,407 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:30,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1008307668, now seen corresponding path program 105 times [2018-10-04 09:40:30,407 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:30,407 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:30,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:30,408 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:40:30,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:30,650 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:30,873 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:31,421 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:31,614 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:31,941 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:32,408 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:32,595 INFO L134 CoverageAnalysis]: Checked inductivity of 11360 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:32,596 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:32,596 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:40:32,603 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:40:32,997 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 107 check-sat command(s) [2018-10-04 09:40:32,997 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:40:33,003 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:33,381 INFO L134 CoverageAnalysis]: Checked inductivity of 11360 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:33,403 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:33,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-04 09:40:33,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-04 09:40:33,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-04 09:40:33,404 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:33,404 INFO L87 Difference]: Start difference. First operand 229 states and 231 transitions. Second operand 109 states. [2018-10-04 09:40:33,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:33,745 INFO L93 Difference]: Finished difference Result 245 states and 249 transitions. [2018-10-04 09:40:33,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-04 09:40:33,746 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 228 [2018-10-04 09:40:33,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:33,746 INFO L225 Difference]: With dead ends: 245 [2018-10-04 09:40:33,746 INFO L226 Difference]: Without dead ends: 231 [2018-10-04 09:40:33,747 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.5s impTime 13 [2018-10-04 09:40:33,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-04 09:40:33,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-10-04 09:40:33,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-04 09:40:33,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 233 transitions. [2018-10-04 09:40:33,753 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 233 transitions. Word has length 228 [2018-10-04 09:40:33,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:33,753 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 233 transitions. [2018-10-04 09:40:33,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-04 09:40:33,753 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 233 transitions. [2018-10-04 09:40:33,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-04 09:40:33,754 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:33,754 INFO L375 BasicCegarLoop]: trace histogram [108, 107, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:40:33,754 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:33,754 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:33,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1009193176, now seen corresponding path program 106 times [2018-10-04 09:40:33,754 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:33,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:33,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:33,755 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:40:33,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:34,022 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:34,144 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:34,343 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:34,715 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:35,212 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:35,880 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:36,369 INFO L134 CoverageAnalysis]: Checked inductivity of 11574 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:36,369 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:36,369 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:40:36,376 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:40:36,526 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:40:36,526 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:40:36,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:36,888 INFO L134 CoverageAnalysis]: Checked inductivity of 11574 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:36,909 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:36,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-04 09:40:36,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-04 09:40:36,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-04 09:40:36,910 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:36,911 INFO L87 Difference]: Start difference. First operand 231 states and 233 transitions. Second operand 110 states. [2018-10-04 09:40:37,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:37,360 INFO L93 Difference]: Finished difference Result 247 states and 251 transitions. [2018-10-04 09:40:37,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-04 09:40:37,360 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 230 [2018-10-04 09:40:37,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:37,360 INFO L225 Difference]: With dead ends: 247 [2018-10-04 09:40:37,361 INFO L226 Difference]: Without dead ends: 233 [2018-10-04 09:40:37,361 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.0s impTime 14 [2018-10-04 09:40:37,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-10-04 09:40:37,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-10-04 09:40:37,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-10-04 09:40:37,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 235 transitions. [2018-10-04 09:40:37,367 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 235 transitions. Word has length 230 [2018-10-04 09:40:37,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:37,367 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 235 transitions. [2018-10-04 09:40:37,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-04 09:40:37,367 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 235 transitions. [2018-10-04 09:40:37,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-04 09:40:37,368 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:37,368 INFO L375 BasicCegarLoop]: trace histogram [109, 108, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:40:37,368 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:37,368 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:37,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1860166364, now seen corresponding path program 107 times [2018-10-04 09:40:37,368 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:37,368 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:37,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:37,369 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:40:37,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:37,617 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:37,864 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:38,168 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:38,708 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:39,365 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:40,160 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:40,548 INFO L134 CoverageAnalysis]: Checked inductivity of 11790 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:40,548 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:40,548 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 [2018-10-04 09:40:40,555 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:40:40,930 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 109 check-sat command(s) [2018-10-04 09:40:40,930 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:40:40,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:41,564 INFO L134 CoverageAnalysis]: Checked inductivity of 11790 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:41,585 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:41,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-04 09:40:41,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-04 09:40:41,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-04 09:40:41,586 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:41,587 INFO L87 Difference]: Start difference. First operand 233 states and 235 transitions. Second operand 111 states. [2018-10-04 09:40:42,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:42,133 INFO L93 Difference]: Finished difference Result 249 states and 253 transitions. [2018-10-04 09:40:42,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-04 09:40:42,133 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 232 [2018-10-04 09:40:42,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:42,134 INFO L225 Difference]: With dead ends: 249 [2018-10-04 09:40:42,134 INFO L226 Difference]: Without dead ends: 235 [2018-10-04 09:40:42,134 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.5s impTime 15 [2018-10-04 09:40:42,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-04 09:40:42,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-10-04 09:40:42,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-04 09:40:42,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 237 transitions. [2018-10-04 09:40:42,140 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 237 transitions. Word has length 232 [2018-10-04 09:40:42,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:42,140 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 237 transitions. [2018-10-04 09:40:42,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-04 09:40:42,140 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 237 transitions. [2018-10-04 09:40:42,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-04 09:40:42,141 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:42,141 INFO L375 BasicCegarLoop]: trace histogram [110, 109, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:40:42,141 INFO L423 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:42,141 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:42,141 INFO L82 PathProgramCache]: Analyzing trace with hash 693353504, now seen corresponding path program 108 times [2018-10-04 09:40:42,142 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:42,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:42,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:42,142 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:40:42,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:42,409 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:42,663 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:42,992 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:43,166 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:43,492 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:44,166 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:44,460 INFO L134 CoverageAnalysis]: Checked inductivity of 12008 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:44,461 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:44,461 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 [2018-10-04 09:40:44,474 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:40:44,890 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 110 check-sat command(s) [2018-10-04 09:40:44,891 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:40:44,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:45,313 INFO L134 CoverageAnalysis]: Checked inductivity of 12008 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:45,334 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:45,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-04 09:40:45,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-04 09:40:45,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-04 09:40:45,336 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:45,336 INFO L87 Difference]: Start difference. First operand 235 states and 237 transitions. Second operand 112 states. [2018-10-04 09:40:45,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:45,759 INFO L93 Difference]: Finished difference Result 251 states and 255 transitions. [2018-10-04 09:40:45,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-04 09:40:45,759 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 234 [2018-10-04 09:40:45,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:45,760 INFO L225 Difference]: With dead ends: 251 [2018-10-04 09:40:45,760 INFO L226 Difference]: Without dead ends: 237 [2018-10-04 09:40:45,760 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime 13 [2018-10-04 09:40:45,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-10-04 09:40:45,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-10-04 09:40:45,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-10-04 09:40:45,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 239 transitions. [2018-10-04 09:40:45,767 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 239 transitions. Word has length 234 [2018-10-04 09:40:45,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:45,768 INFO L480 AbstractCegarLoop]: Abstraction has 237 states and 239 transitions. [2018-10-04 09:40:45,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-04 09:40:45,768 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 239 transitions. [2018-10-04 09:40:45,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-04 09:40:45,768 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:45,768 INFO L375 BasicCegarLoop]: trace histogram [111, 110, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:40:45,769 INFO L423 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:45,769 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:45,769 INFO L82 PathProgramCache]: Analyzing trace with hash -2095346660, now seen corresponding path program 109 times [2018-10-04 09:40:45,769 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:45,769 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:45,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:45,770 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:40:45,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:46,094 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:46,522 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:46,822 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:47,376 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:48,042 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:48,853 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:48,935 INFO L134 CoverageAnalysis]: Checked inductivity of 12228 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:48,935 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:48,935 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 [2018-10-04 09:40:48,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:40:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:49,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:49,495 INFO L134 CoverageAnalysis]: Checked inductivity of 12228 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:49,515 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:49,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-10-04 09:40:49,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-04 09:40:49,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-04 09:40:49,517 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:49,517 INFO L87 Difference]: Start difference. First operand 237 states and 239 transitions. Second operand 113 states. [2018-10-04 09:40:49,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:49,986 INFO L93 Difference]: Finished difference Result 253 states and 257 transitions. [2018-10-04 09:40:49,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-04 09:40:49,987 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 236 [2018-10-04 09:40:49,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:49,987 INFO L225 Difference]: With dead ends: 253 [2018-10-04 09:40:49,987 INFO L226 Difference]: Without dead ends: 239 [2018-10-04 09:40:49,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.4s impTime 16 [2018-10-04 09:40:49,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-10-04 09:40:49,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-10-04 09:40:49,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-04 09:40:49,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 241 transitions. [2018-10-04 09:40:49,997 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 241 transitions. Word has length 236 [2018-10-04 09:40:49,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:49,997 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 241 transitions. [2018-10-04 09:40:49,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-04 09:40:49,998 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 241 transitions. [2018-10-04 09:40:49,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-04 09:40:49,998 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:49,999 INFO L375 BasicCegarLoop]: trace histogram [112, 111, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:40:49,999 INFO L423 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:49,999 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:49,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1976611560, now seen corresponding path program 110 times [2018-10-04 09:40:49,999 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:49,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:50,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:50,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:40:50,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:50,293 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:50,495 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:51,027 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:51,835 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:52,464 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:53,214 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:53,725 INFO L134 CoverageAnalysis]: Checked inductivity of 12450 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:53,726 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:53,726 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 [2018-10-04 09:40:53,732 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:40:53,892 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:40:53,892 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:40:53,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:54,282 INFO L134 CoverageAnalysis]: Checked inductivity of 12450 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:54,303 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:54,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-10-04 09:40:54,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-04 09:40:54,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-04 09:40:54,304 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:54,304 INFO L87 Difference]: Start difference. First operand 239 states and 241 transitions. Second operand 114 states. [2018-10-04 09:40:54,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:54,900 INFO L93 Difference]: Finished difference Result 255 states and 259 transitions. [2018-10-04 09:40:54,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-04 09:40:54,900 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 238 [2018-10-04 09:40:54,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:54,901 INFO L225 Difference]: With dead ends: 255 [2018-10-04 09:40:54,901 INFO L226 Difference]: Without dead ends: 241 [2018-10-04 09:40:54,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 2.9s impTime 18 [2018-10-04 09:40:54,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-10-04 09:40:54,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-10-04 09:40:54,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-04 09:40:54,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 243 transitions. [2018-10-04 09:40:54,907 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 243 transitions. Word has length 238 [2018-10-04 09:40:54,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:54,908 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 243 transitions. [2018-10-04 09:40:54,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-04 09:40:54,908 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 243 transitions. [2018-10-04 09:40:54,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-04 09:40:54,908 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:54,908 INFO L375 BasicCegarLoop]: trace histogram [113, 112, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 09:40:54,909 INFO L423 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:54,909 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:54,909 INFO L82 PathProgramCache]: Analyzing trace with hash 458669844, now seen corresponding path program 111 times [2018-10-04 09:40:54,909 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:54,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:54,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:54,909 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:40:54,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:55,214 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:55,406 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:55,613 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:55,997 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:56,537 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:57,506 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:58,056 INFO L134 CoverageAnalysis]: Checked inductivity of 12674 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 09:40:58,057 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:58,057 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 [2018-10-04 09:40:58,064 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Received shutdown request... [2018-10-04 09:40:58,533 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 113 check-sat command(s) [2018-10-04 09:40:58,533 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:40:58,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:58,550 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-04 09:40:58,751 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:40:58,752 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-04 09:40:58,757 WARN L205 ceAbstractionStarter]: Timeout [2018-10-04 09:40:58,758 INFO L202 PluginConnector]: Adding new model fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 09:40:58 BoogieIcfgContainer [2018-10-04 09:40:58,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 09:40:58,759 INFO L168 Benchmark]: Toolchain (without parser) took 235308.24 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 310.9 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 258.5 MB). Peak memory consumption was 569.4 MB. Max. memory is 7.1 GB. [2018-10-04 09:40:58,761 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 09:40:58,761 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.72 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 09:40:58,761 INFO L168 Benchmark]: Boogie Preprocessor took 20.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 09:40:58,762 INFO L168 Benchmark]: RCFGBuilder took 423.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-04 09:40:58,764 INFO L168 Benchmark]: TraceAbstraction took 234816.95 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 310.9 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 237.3 MB). Peak memory consumption was 548.2 MB. Max. memory is 7.1 GB. [2018-10-04 09:40:58,769 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 0.26 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 42.72 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 20.23 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 423.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234816.95 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 310.9 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 237.3 MB). Peak memory consumption was 548.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 83). Cancelled while BasicCegarLoop was analyzing trace of length 241 with TraceHistMax 113, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 234.7s OverallTime, 115 OverallIterations, 113 TraceHistogramMax, 23.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1026 SDtfs, 31 SDslu, 23988 SDs, 0 SdLazy, 13515 SolverSat, 225 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20537 GetRequests, 14203 SyntacticMatches, 0 SemanticMatches, 6334 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 164.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=241occurred in iteration=114, 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: 0.6s AutomataMinimizationTime, 114 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.7s SsaConstructionTime, 15.9s SatisfiabilityAnalysisTime, 182.7s InterpolantComputationTime, 28427 NumberOfCodeBlocks, 28427 NumberOfCodeBlocksAsserted, 3322 NumberOfCheckSat, 28202 ConstructedInterpolants, 0 QuantifiedInterpolants, 12743756 SizeOfPredicates, 111 NumberOfNonLiveVariables, 69336 ConjunctsInSsa, 6438 ConjunctsInUnsatCore, 225 InterpolantComputations, 3 PerfectInterpolantSequences, 3972/940516 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/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_09-40-58-788.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_09-40-58-788.csv Completed graceful shutdown