java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/gr2006.c.i_4.bplTransformedIcfg_BEv2_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-4eac566 [2018-09-23 19:35:29,379 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-23 19:35:29,382 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-23 19:35:29,401 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-09-23 19:35:29,456 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-23 19:35:29,475 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-23 19:35:29,475 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-23 19:35:29,476 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-23 19:35:29,476 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-23 19:35:29,477 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-23 19:35:29,477 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-23 19:35:29,477 INFO L133 SettingsManager]: * Use SBE=true [2018-09-23 19:35:29,477 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-23 19:35:29,478 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-23 19:35:29,478 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-23 19:35:29,478 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-23 19:35:29,478 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-23 19:35:29,478 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-23 19:35:29,479 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-23 19:35:29,479 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-23 19:35:29,480 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-23 19:35:29,480 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-23 19:35:29,480 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-23 19:35:29,480 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-23 19:35:29,480 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-23 19:35:29,481 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-23 19:35:29,481 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-23 19:35:29,481 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-23 19:35:29,481 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-23 19:35:29,482 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-23 19:35:29,483 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-23 19:35:29,483 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-23 19:35:29,483 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-23 19:35:29,483 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-23 19:35:29,483 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-23 19:35:29,538 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-23 19:35:29,552 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-23 19:35:29,559 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-23 19:35:29,560 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-23 19:35:29,561 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-23 19:35:29,562 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/gr2006.c.i_4.bplTransformedIcfg_BEv2_3.bpl [2018-09-23 19:35:29,562 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/gr2006.c.i_4.bplTransformedIcfg_BEv2_3.bpl' [2018-09-23 19:35:29,619 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-23 19:35:29,623 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-23 19:35:29,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-23 19:35:29,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-23 19:35:29,624 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-23 19:35:29,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "gr2006.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:35:29" (1/1) ... [2018-09-23 19:35:29,656 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "gr2006.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:35:29" (1/1) ... [2018-09-23 19:35:29,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-23 19:35:29,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-23 19:35:29,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-23 19:35:29,665 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-23 19:35:29,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "gr2006.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:35:29" (1/1) ... [2018-09-23 19:35:29,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "gr2006.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:35:29" (1/1) ... [2018-09-23 19:35:29,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "gr2006.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:35:29" (1/1) ... [2018-09-23 19:35:29,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "gr2006.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:35:29" (1/1) ... [2018-09-23 19:35:29,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "gr2006.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:35:29" (1/1) ... [2018-09-23 19:35:29,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "gr2006.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:35:29" (1/1) ... [2018-09-23 19:35:29,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "gr2006.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:35:29" (1/1) ... [2018-09-23 19:35:29,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-23 19:35:29,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-23 19:35:29,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-23 19:35:29,691 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-23 19:35:29,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "gr2006.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:35:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-23 19:35:29,778 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-09-23 19:35:29,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-23 19:35:29,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-23 19:35:30,040 INFO L354 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-23 19:35:30,041 INFO L202 PluginConnector]: Adding new model gr2006.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.09 07:35:30 BoogieIcfgContainer [2018-09-23 19:35:30,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-23 19:35:30,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-23 19:35:30,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-23 19:35:30,045 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-23 19:35:30,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "gr2006.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:35:29" (1/2) ... [2018-09-23 19:35:30,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fe91b0 and model type gr2006.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.09 07:35:30, skipping insertion in model container [2018-09-23 19:35:30,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "gr2006.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.09 07:35:30" (2/2) ... [2018-09-23 19:35:30,049 INFO L112 eAbstractionObserver]: Analyzing ICFG gr2006.c.i_4.bplTransformedIcfg_BEv2_3.bpl [2018-09-23 19:35:30,059 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-23 19:35:30,067 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-23 19:35:30,119 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-23 19:35:30,120 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-23 19:35:30,120 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-23 19:35:30,121 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-23 19:35:30,121 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-23 19:35:30,121 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-23 19:35:30,121 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-23 19:35:30,121 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-23 19:35:30,122 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-23 19:35:30,137 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-09-23 19:35:30,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-23 19:35:30,144 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:30,145 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-23 19:35:30,146 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:30,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:30,153 INFO L82 PathProgramCache]: Analyzing trace with hash 928682, now seen corresponding path program 1 times [2018-09-23 19:35:30,155 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:30,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:30,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:30,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:35:30,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:30,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:35:30,308 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-23 19:35:30,308 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-23 19:35:30,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-23 19:35:30,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-23 19:35:30,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-23 19:35:30,330 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-09-23 19:35:30,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:30,435 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2018-09-23 19:35:30,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-23 19:35:30,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-09-23 19:35:30,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:30,453 INFO L225 Difference]: With dead ends: 15 [2018-09-23 19:35:30,453 INFO L226 Difference]: Without dead ends: 9 [2018-09-23 19:35:30,456 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-23 19:35:30,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-09-23 19:35:30,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2018-09-23 19:35:30,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-09-23 19:35:30,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2018-09-23 19:35:30,502 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 7 transitions. Word has length 4 [2018-09-23 19:35:30,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:30,505 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-09-23 19:35:30,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-23 19:35:30,505 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 7 transitions. [2018-09-23 19:35:30,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-23 19:35:30,506 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:30,506 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-23 19:35:30,506 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:30,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:30,507 INFO L82 PathProgramCache]: Analyzing trace with hash 930604, now seen corresponding path program 1 times [2018-09-23 19:35:30,507 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:30,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:30,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:30,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:35:30,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:30,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:35:30,582 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-23 19:35:30,582 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-23 19:35:30,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-23 19:35:30,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-23 19:35:30,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-23 19:35:30,586 INFO L87 Difference]: Start difference. First operand 6 states and 7 transitions. Second operand 4 states. [2018-09-23 19:35:30,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:30,682 INFO L93 Difference]: Finished difference Result 11 states and 14 transitions. [2018-09-23 19:35:30,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-23 19:35:30,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-09-23 19:35:30,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:30,683 INFO L225 Difference]: With dead ends: 11 [2018-09-23 19:35:30,683 INFO L226 Difference]: Without dead ends: 9 [2018-09-23 19:35:30,684 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-23 19:35:30,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-09-23 19:35:30,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-09-23 19:35:30,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-23 19:35:30,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-09-23 19:35:30,688 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 4 [2018-09-23 19:35:30,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:30,688 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-09-23 19:35:30,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-23 19:35:30,688 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2018-09-23 19:35:30,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-23 19:35:30,689 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:30,689 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2018-09-23 19:35:30,689 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:30,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:30,690 INFO L82 PathProgramCache]: Analyzing trace with hash 487293020, now seen corresponding path program 1 times [2018-09-23 19:35:30,690 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:30,690 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:30,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:30,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:35:30,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:30,744 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-23 19:35:30,744 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:30,744 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:30,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:35:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:30,791 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-23 19:35:30,843 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:30,843 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-09-23 19:35:30,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-23 19:35:30,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-23 19:35:30,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-23 19:35:30,845 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 4 states. [2018-09-23 19:35:30,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:30,990 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2018-09-23 19:35:30,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-23 19:35:30,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-09-23 19:35:30,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:30,992 INFO L225 Difference]: With dead ends: 19 [2018-09-23 19:35:30,992 INFO L226 Difference]: Without dead ends: 12 [2018-09-23 19:35:30,994 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-23 19:35:30,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-09-23 19:35:31,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2018-09-23 19:35:31,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-09-23 19:35:31,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2018-09-23 19:35:31,002 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2018-09-23 19:35:31,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:31,002 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2018-09-23 19:35:31,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-23 19:35:31,003 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2018-09-23 19:35:31,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-23 19:35:31,004 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:31,004 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2018-09-23 19:35:31,005 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:31,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:31,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1912214646, now seen corresponding path program 2 times [2018-09-23 19:35:31,006 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:31,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:31,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:31,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:35:31,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:31,285 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-23 19:35:31,286 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:31,286 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:31,300 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-23 19:35:31,331 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-23 19:35:31,332 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:35:31,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:31,341 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-23 19:35:31,370 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:31,371 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-09-23 19:35:31,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-23 19:35:31,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-23 19:35:31,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-23 19:35:31,372 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 5 states. [2018-09-23 19:35:31,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:31,504 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2018-09-23 19:35:31,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-23 19:35:31,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-09-23 19:35:31,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:31,507 INFO L225 Difference]: With dead ends: 21 [2018-09-23 19:35:31,507 INFO L226 Difference]: Without dead ends: 14 [2018-09-23 19:35:31,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-23 19:35:31,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-23 19:35:31,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2018-09-23 19:35:31,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-09-23 19:35:31,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2018-09-23 19:35:31,514 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2018-09-23 19:35:31,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:31,514 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2018-09-23 19:35:31,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-23 19:35:31,515 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2018-09-23 19:35:31,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-23 19:35:31,516 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:31,516 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1] [2018-09-23 19:35:31,516 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:31,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:31,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1167329808, now seen corresponding path program 3 times [2018-09-23 19:35:31,517 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:31,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:31,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:31,519 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:35:31,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:31,807 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-23 19:35:31,807 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:31,807 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:31,818 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-23 19:35:31,853 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-09-23 19:35:31,853 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:35:31,855 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:31,861 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-23 19:35:31,891 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:31,891 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-09-23 19:35:31,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-23 19:35:31,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-23 19:35:31,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-09-23 19:35:31,893 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 6 states. [2018-09-23 19:35:31,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:31,967 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2018-09-23 19:35:31,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-23 19:35:31,968 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-09-23 19:35:31,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:31,969 INFO L225 Difference]: With dead ends: 23 [2018-09-23 19:35:31,969 INFO L226 Difference]: Without dead ends: 16 [2018-09-23 19:35:31,970 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-09-23 19:35:31,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-09-23 19:35:31,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2018-09-23 19:35:31,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-23 19:35:31,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2018-09-23 19:35:31,975 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2018-09-23 19:35:31,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:31,975 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2018-09-23 19:35:31,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-23 19:35:31,976 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2018-09-23 19:35:31,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-23 19:35:31,976 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:31,977 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1] [2018-09-23 19:35:31,977 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:31,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:31,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1702428374, now seen corresponding path program 4 times [2018-09-23 19:35:31,978 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:31,978 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:31,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:31,979 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:35:31,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:32,130 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-23 19:35:32,130 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:32,130 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:32,141 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-23 19:35:32,154 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-23 19:35:32,155 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:35:32,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:32,163 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-23 19:35:32,192 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:32,192 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-23 19:35:32,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-23 19:35:32,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-23 19:35:32,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-09-23 19:35:32,194 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 7 states. [2018-09-23 19:35:32,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:32,335 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2018-09-23 19:35:32,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-23 19:35:32,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-09-23 19:35:32,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:32,337 INFO L225 Difference]: With dead ends: 25 [2018-09-23 19:35:32,337 INFO L226 Difference]: Without dead ends: 18 [2018-09-23 19:35:32,338 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-09-23 19:35:32,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-09-23 19:35:32,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-09-23 19:35:32,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-09-23 19:35:32,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-09-23 19:35:32,343 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2018-09-23 19:35:32,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:32,344 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-09-23 19:35:32,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-23 19:35:32,344 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-09-23 19:35:32,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-23 19:35:32,345 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:32,345 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 2, 1, 1, 1] [2018-09-23 19:35:32,345 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:32,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:32,346 INFO L82 PathProgramCache]: Analyzing trace with hash 2123930052, now seen corresponding path program 5 times [2018-09-23 19:35:32,346 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:32,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:32,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:32,347 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:35:32,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:32,439 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-23 19:35:32,440 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:32,440 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:32,450 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-23 19:35:32,469 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-09-23 19:35:32,469 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:35:32,471 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:32,478 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-23 19:35:32,503 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:32,504 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-09-23 19:35:32,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-23 19:35:32,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-23 19:35:32,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-09-23 19:35:32,505 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 8 states. [2018-09-23 19:35:32,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:32,605 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2018-09-23 19:35:32,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-23 19:35:32,607 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-09-23 19:35:32,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:32,608 INFO L225 Difference]: With dead ends: 27 [2018-09-23 19:35:32,608 INFO L226 Difference]: Without dead ends: 20 [2018-09-23 19:35:32,608 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-09-23 19:35:32,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-09-23 19:35:32,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2018-09-23 19:35:32,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-23 19:35:32,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-09-23 19:35:32,614 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2018-09-23 19:35:32,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:32,615 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-09-23 19:35:32,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-23 19:35:32,615 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-09-23 19:35:32,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-23 19:35:32,616 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:32,616 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 2, 1, 1, 1] [2018-09-23 19:35:32,616 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:32,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:32,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1532595234, now seen corresponding path program 6 times [2018-09-23 19:35:32,617 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:32,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:32,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:32,618 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:35:32,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:33,041 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 19 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-23 19:35:33,042 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:33,042 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:33,057 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-23 19:35:33,085 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-09-23 19:35:33,086 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:35:33,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:33,138 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:35:33,162 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:33,162 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 9 [2018-09-23 19:35:33,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-23 19:35:33,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-23 19:35:33,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-09-23 19:35:33,163 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 10 states. [2018-09-23 19:35:33,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:33,248 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2018-09-23 19:35:33,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-23 19:35:33,250 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-09-23 19:35:33,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:33,251 INFO L225 Difference]: With dead ends: 31 [2018-09-23 19:35:33,251 INFO L226 Difference]: Without dead ends: 24 [2018-09-23 19:35:33,252 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-09-23 19:35:33,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-23 19:35:33,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2018-09-23 19:35:33,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-09-23 19:35:33,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-09-23 19:35:33,260 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 18 [2018-09-23 19:35:33,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:33,261 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-09-23 19:35:33,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-23 19:35:33,261 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-09-23 19:35:33,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-23 19:35:33,262 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:33,262 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 2, 1, 1, 1] [2018-09-23 19:35:33,262 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:33,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:33,263 INFO L82 PathProgramCache]: Analyzing trace with hash -677024622, now seen corresponding path program 7 times [2018-09-23 19:35:33,263 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:33,263 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:33,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:33,264 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:35:33,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:33,531 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-23 19:35:33,532 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:33,532 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:33,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:35:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:33,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-23 19:35:33,595 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:33,596 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-09-23 19:35:33,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-23 19:35:33,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-23 19:35:33,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-09-23 19:35:33,597 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 11 states. [2018-09-23 19:35:33,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:33,694 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2018-09-23 19:35:33,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-23 19:35:33,694 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-09-23 19:35:33,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:33,695 INFO L225 Difference]: With dead ends: 33 [2018-09-23 19:35:33,695 INFO L226 Difference]: Without dead ends: 26 [2018-09-23 19:35:33,696 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-09-23 19:35:33,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-09-23 19:35:33,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-09-23 19:35:33,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-09-23 19:35:33,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-09-23 19:35:33,703 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2018-09-23 19:35:33,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:33,704 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-09-23 19:35:33,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-23 19:35:33,704 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-09-23 19:35:33,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-23 19:35:33,705 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:33,705 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 2, 1, 1, 1] [2018-09-23 19:35:33,705 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:33,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:33,706 INFO L82 PathProgramCache]: Analyzing trace with hash -305542356, now seen corresponding path program 8 times [2018-09-23 19:35:33,706 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:33,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:33,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:33,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:35:33,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 28 proven. 81 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-23 19:35:33,917 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:33,918 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:33,928 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-23 19:35:33,960 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-23 19:35:33,960 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:35:33,962 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:33,971 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 28 proven. 81 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-23 19:35:34,000 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:34,000 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-09-23 19:35:34,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-23 19:35:34,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-23 19:35:34,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-09-23 19:35:34,002 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 12 states. [2018-09-23 19:35:34,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:34,131 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2018-09-23 19:35:34,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-23 19:35:34,132 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2018-09-23 19:35:34,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:34,132 INFO L225 Difference]: With dead ends: 35 [2018-09-23 19:35:34,132 INFO L226 Difference]: Without dead ends: 28 [2018-09-23 19:35:34,133 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-09-23 19:35:34,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-09-23 19:35:34,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2018-09-23 19:35:34,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-09-23 19:35:34,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-09-23 19:35:34,139 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2018-09-23 19:35:34,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:34,140 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-09-23 19:35:34,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-23 19:35:34,140 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-09-23 19:35:34,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-23 19:35:34,141 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:34,141 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 2, 1, 1, 1] [2018-09-23 19:35:34,141 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:34,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:34,142 INFO L82 PathProgramCache]: Analyzing trace with hash 206629702, now seen corresponding path program 9 times [2018-09-23 19:35:34,142 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:34,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:34,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:34,143 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:35:34,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:34,339 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 31 proven. 100 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-23 19:35:34,339 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:34,339 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:34,348 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-23 19:35:34,370 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-09-23 19:35:34,370 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:35:34,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 69 proven. 5 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-09-23 19:35:34,469 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:34,469 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 16 [2018-09-23 19:35:34,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-23 19:35:34,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-23 19:35:34,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2018-09-23 19:35:34,470 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 16 states. [2018-09-23 19:35:34,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:34,925 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2018-09-23 19:35:34,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-23 19:35:34,925 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 26 [2018-09-23 19:35:34,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:34,926 INFO L225 Difference]: With dead ends: 42 [2018-09-23 19:35:34,926 INFO L226 Difference]: Without dead ends: 35 [2018-09-23 19:35:34,927 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=283, Invalid=529, Unknown=0, NotChecked=0, Total=812 [2018-09-23 19:35:34,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-09-23 19:35:34,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2018-09-23 19:35:34,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-23 19:35:34,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2018-09-23 19:35:34,937 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 26 [2018-09-23 19:35:34,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:34,937 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2018-09-23 19:35:34,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-23 19:35:34,938 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2018-09-23 19:35:34,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-23 19:35:34,938 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:34,939 INFO L375 BasicCegarLoop]: trace histogram [13, 11, 3, 1, 1, 1] [2018-09-23 19:35:34,939 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:34,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:34,939 INFO L82 PathProgramCache]: Analyzing trace with hash -2094433928, now seen corresponding path program 10 times [2018-09-23 19:35:34,940 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:34,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:34,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:34,941 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:35:34,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:35,296 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 57 proven. 121 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-23 19:35:35,296 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:35,296 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:35,317 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-23 19:35:35,366 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-23 19:35:35,367 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:35:35,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:35,395 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 57 proven. 121 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-23 19:35:35,430 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:35,431 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-09-23 19:35:35,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-23 19:35:35,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-23 19:35:35,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-09-23 19:35:35,432 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 14 states. [2018-09-23 19:35:35,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:35,660 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2018-09-23 19:35:35,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-23 19:35:35,661 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 30 [2018-09-23 19:35:35,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:35,662 INFO L225 Difference]: With dead ends: 43 [2018-09-23 19:35:35,662 INFO L226 Difference]: Without dead ends: 34 [2018-09-23 19:35:35,663 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-09-23 19:35:35,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-09-23 19:35:35,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2018-09-23 19:35:35,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-09-23 19:35:35,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-09-23 19:35:35,672 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 30 [2018-09-23 19:35:35,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:35,672 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-09-23 19:35:35,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-23 19:35:35,673 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-09-23 19:35:35,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-09-23 19:35:35,674 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:35,674 INFO L375 BasicCegarLoop]: trace histogram [14, 12, 3, 1, 1, 1] [2018-09-23 19:35:35,674 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:35,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:35,674 INFO L82 PathProgramCache]: Analyzing trace with hash -2026201582, now seen corresponding path program 11 times [2018-09-23 19:35:35,675 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:35,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:35,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:35,676 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:35:35,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:35,907 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 62 proven. 144 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-23 19:35:35,907 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:35,907 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:35,921 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-23 19:35:35,972 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2018-09-23 19:35:35,973 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:35:35,975 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:35,989 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 62 proven. 144 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-23 19:35:36,013 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:36,014 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-09-23 19:35:36,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-23 19:35:36,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-23 19:35:36,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-09-23 19:35:36,015 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 15 states. [2018-09-23 19:35:36,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:36,109 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2018-09-23 19:35:36,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-23 19:35:36,111 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 32 [2018-09-23 19:35:36,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:36,111 INFO L225 Difference]: With dead ends: 45 [2018-09-23 19:35:36,112 INFO L226 Difference]: Without dead ends: 36 [2018-09-23 19:35:36,112 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-09-23 19:35:36,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-09-23 19:35:36,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2018-09-23 19:35:36,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-09-23 19:35:36,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-09-23 19:35:36,123 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 32 [2018-09-23 19:35:36,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:36,124 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-09-23 19:35:36,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-23 19:35:36,124 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-09-23 19:35:36,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-23 19:35:36,125 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:36,125 INFO L375 BasicCegarLoop]: trace histogram [15, 13, 3, 1, 1, 1] [2018-09-23 19:35:36,126 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:36,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:36,126 INFO L82 PathProgramCache]: Analyzing trace with hash -879426516, now seen corresponding path program 12 times [2018-09-23 19:35:36,126 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:36,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:36,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:36,127 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:35:36,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:36,452 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 67 proven. 169 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-23 19:35:36,453 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:36,453 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:36,478 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-23 19:35:36,514 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-09-23 19:35:36,515 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:35:36,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 222 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-23 19:35:36,822 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:36,823 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2018-09-23 19:35:36,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-09-23 19:35:36,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-09-23 19:35:36,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2018-09-23 19:35:36,825 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 30 states. [2018-09-23 19:35:38,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:38,465 INFO L93 Difference]: Finished difference Result 124 states and 175 transitions. [2018-09-23 19:35:38,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-23 19:35:38,468 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 34 [2018-09-23 19:35:38,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:38,469 INFO L225 Difference]: With dead ends: 124 [2018-09-23 19:35:38,470 INFO L226 Difference]: Without dead ends: 115 [2018-09-23 19:35:38,472 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=737, Invalid=2455, Unknown=0, NotChecked=0, Total=3192 [2018-09-23 19:35:38,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-09-23 19:35:38,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 59. [2018-09-23 19:35:38,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-23 19:35:38,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2018-09-23 19:35:38,492 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 34 [2018-09-23 19:35:38,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:38,492 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2018-09-23 19:35:38,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-09-23 19:35:38,493 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2018-09-23 19:35:38,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-23 19:35:38,494 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:38,494 INFO L375 BasicCegarLoop]: trace histogram [27, 14, 14, 1, 1, 1] [2018-09-23 19:35:38,494 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:38,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:38,495 INFO L82 PathProgramCache]: Analyzing trace with hash 407632846, now seen corresponding path program 13 times [2018-09-23 19:35:38,495 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:38,495 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:38,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:38,496 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:35:38,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:38,706 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 391 proven. 196 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-09-23 19:35:38,706 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:38,706 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:38,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:35:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:38,745 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:38,760 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 391 proven. 196 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-09-23 19:35:38,781 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:38,781 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-09-23 19:35:38,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-23 19:35:38,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-23 19:35:38,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-09-23 19:35:38,782 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand 17 states. [2018-09-23 19:35:38,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:38,975 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2018-09-23 19:35:38,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-23 19:35:38,976 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2018-09-23 19:35:38,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:38,977 INFO L225 Difference]: With dead ends: 93 [2018-09-23 19:35:38,977 INFO L226 Difference]: Without dead ends: 62 [2018-09-23 19:35:38,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-09-23 19:35:38,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-09-23 19:35:38,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2018-09-23 19:35:38,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-09-23 19:35:38,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2018-09-23 19:35:38,997 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 58 [2018-09-23 19:35:38,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:38,998 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2018-09-23 19:35:38,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-23 19:35:38,998 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2018-09-23 19:35:38,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-23 19:35:38,999 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:38,999 INFO L375 BasicCegarLoop]: trace histogram [28, 15, 14, 1, 1, 1] [2018-09-23 19:35:38,999 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:39,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:39,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1594791272, now seen corresponding path program 14 times [2018-09-23 19:35:39,000 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:39,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:39,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:39,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:35:39,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:39,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:39,223 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 418 proven. 225 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-09-23 19:35:39,224 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:39,224 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:39,234 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-23 19:35:39,287 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-23 19:35:39,288 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:35:39,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:39,307 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 418 proven. 225 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-09-23 19:35:39,338 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:39,338 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-09-23 19:35:39,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-23 19:35:39,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-23 19:35:39,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-09-23 19:35:39,339 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand 18 states. [2018-09-23 19:35:39,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:39,665 INFO L93 Difference]: Finished difference Result 95 states and 124 transitions. [2018-09-23 19:35:39,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-23 19:35:39,665 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 60 [2018-09-23 19:35:39,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:39,666 INFO L225 Difference]: With dead ends: 95 [2018-09-23 19:35:39,666 INFO L226 Difference]: Without dead ends: 64 [2018-09-23 19:35:39,667 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-09-23 19:35:39,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-09-23 19:35:39,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2018-09-23 19:35:39,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-23 19:35:39,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2018-09-23 19:35:39,688 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 60 [2018-09-23 19:35:39,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:39,689 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2018-09-23 19:35:39,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-23 19:35:39,689 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2018-09-23 19:35:39,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-23 19:35:39,690 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:39,690 INFO L375 BasicCegarLoop]: trace histogram [29, 16, 14, 1, 1, 1] [2018-09-23 19:35:39,690 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:39,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:39,691 INFO L82 PathProgramCache]: Analyzing trace with hash -7262078, now seen corresponding path program 15 times [2018-09-23 19:35:39,691 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:39,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:39,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:39,692 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:35:39,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 445 proven. 256 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-09-23 19:35:39,982 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:39,982 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:39,989 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-23 19:35:40,029 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-09-23 19:35:40,029 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:35:40,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:40,395 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 478 proven. 365 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-09-23 19:35:40,416 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:40,416 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2018-09-23 19:35:40,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-23 19:35:40,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-23 19:35:40,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2018-09-23 19:35:40,418 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand 36 states. [2018-09-23 19:35:42,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:42,173 INFO L93 Difference]: Finished difference Result 184 states and 258 transitions. [2018-09-23 19:35:42,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-23 19:35:42,173 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 62 [2018-09-23 19:35:42,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:42,174 INFO L225 Difference]: With dead ends: 184 [2018-09-23 19:35:42,174 INFO L226 Difference]: Without dead ends: 153 [2018-09-23 19:35:42,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1049, Invalid=3643, Unknown=0, NotChecked=0, Total=4692 [2018-09-23 19:35:42,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-09-23 19:35:42,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 71. [2018-09-23 19:35:42,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-09-23 19:35:42,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2018-09-23 19:35:42,205 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 62 [2018-09-23 19:35:42,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:42,206 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2018-09-23 19:35:42,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-23 19:35:42,206 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2018-09-23 19:35:42,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-23 19:35:42,207 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:42,207 INFO L375 BasicCegarLoop]: trace histogram [33, 17, 17, 1, 1, 1] [2018-09-23 19:35:42,207 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:42,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:42,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1463704604, now seen corresponding path program 16 times [2018-09-23 19:35:42,208 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:42,208 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:42,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:42,209 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:35:42,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:42,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 577 proven. 289 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-09-23 19:35:42,603 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:42,603 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:42,628 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-23 19:35:42,663 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-23 19:35:42,663 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:35:42,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 97 proven. 1024 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-23 19:35:43,409 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:43,409 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 34] total 34 [2018-09-23 19:35:43,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-09-23 19:35:43,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-09-23 19:35:43,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-09-23 19:35:43,411 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand 35 states. [2018-09-23 19:35:43,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:43,678 INFO L93 Difference]: Finished difference Result 141 states and 191 transitions. [2018-09-23 19:35:43,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-23 19:35:43,679 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 70 [2018-09-23 19:35:43,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:43,680 INFO L225 Difference]: With dead ends: 141 [2018-09-23 19:35:43,680 INFO L226 Difference]: Without dead ends: 104 [2018-09-23 19:35:43,681 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-09-23 19:35:43,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-09-23 19:35:43,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2018-09-23 19:35:43,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-09-23 19:35:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 120 transitions. [2018-09-23 19:35:43,710 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 120 transitions. Word has length 70 [2018-09-23 19:35:43,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:43,710 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 120 transitions. [2018-09-23 19:35:43,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-09-23 19:35:43,710 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 120 transitions. [2018-09-23 19:35:43,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-09-23 19:35:43,711 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:43,711 INFO L375 BasicCegarLoop]: trace histogram [49, 33, 17, 1, 1, 1] [2018-09-23 19:35:43,712 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:43,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:43,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1622311300, now seen corresponding path program 17 times [2018-09-23 19:35:43,712 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:43,712 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:43,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:43,713 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:35:43,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:45,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 1105 proven. 1089 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-09-23 19:35:45,992 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:45,992 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:46,000 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-23 19:35:46,078 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 50 check-sat command(s) [2018-09-23 19:35:46,078 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:35:46,081 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:46,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 1105 proven. 1089 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-09-23 19:35:46,125 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:46,125 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-09-23 19:35:46,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-23 19:35:46,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-23 19:35:46,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-09-23 19:35:46,127 INFO L87 Difference]: Start difference. First operand 103 states and 120 transitions. Second operand 36 states. [2018-09-23 19:35:46,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:46,400 INFO L93 Difference]: Finished difference Result 143 states and 178 transitions. [2018-09-23 19:35:46,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-23 19:35:46,401 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 102 [2018-09-23 19:35:46,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:46,402 INFO L225 Difference]: With dead ends: 143 [2018-09-23 19:35:46,402 INFO L226 Difference]: Without dead ends: 106 [2018-09-23 19:35:46,403 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-09-23 19:35:46,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-09-23 19:35:46,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2018-09-23 19:35:46,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-09-23 19:35:46,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 122 transitions. [2018-09-23 19:35:46,433 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 122 transitions. Word has length 102 [2018-09-23 19:35:46,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:46,433 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 122 transitions. [2018-09-23 19:35:46,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-23 19:35:46,434 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 122 transitions. [2018-09-23 19:35:46,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-09-23 19:35:46,434 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:46,434 INFO L375 BasicCegarLoop]: trace histogram [50, 34, 17, 1, 1, 1] [2018-09-23 19:35:46,435 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:46,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:46,435 INFO L82 PathProgramCache]: Analyzing trace with hash 627612702, now seen corresponding path program 18 times [2018-09-23 19:35:46,435 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:46,435 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:46,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:46,436 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:35:46,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:47,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 1138 proven. 1156 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-09-23 19:35:47,024 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:47,024 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:47,032 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-23 19:35:47,107 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 50 check-sat command(s) [2018-09-23 19:35:47,108 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:35:47,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 1138 proven. 1156 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-09-23 19:35:47,161 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:47,161 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-09-23 19:35:47,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-09-23 19:35:47,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-09-23 19:35:47,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-09-23 19:35:47,163 INFO L87 Difference]: Start difference. First operand 105 states and 122 transitions. Second operand 37 states. [2018-09-23 19:35:47,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:47,356 INFO L93 Difference]: Finished difference Result 145 states and 180 transitions. [2018-09-23 19:35:47,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-23 19:35:47,356 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 104 [2018-09-23 19:35:47,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:47,358 INFO L225 Difference]: With dead ends: 145 [2018-09-23 19:35:47,358 INFO L226 Difference]: Without dead ends: 108 [2018-09-23 19:35:47,359 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-09-23 19:35:47,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-09-23 19:35:47,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2018-09-23 19:35:47,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-09-23 19:35:47,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2018-09-23 19:35:47,397 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 104 [2018-09-23 19:35:47,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:47,397 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2018-09-23 19:35:47,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-09-23 19:35:47,397 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2018-09-23 19:35:47,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-09-23 19:35:47,398 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:47,398 INFO L375 BasicCegarLoop]: trace histogram [51, 35, 17, 1, 1, 1] [2018-09-23 19:35:47,399 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:47,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:47,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1795000264, now seen corresponding path program 19 times [2018-09-23 19:35:47,399 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:47,399 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:47,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:47,400 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:35:47,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:48,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 1171 proven. 1225 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-09-23 19:35:48,290 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:48,291 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:48,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:35:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:48,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:48,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 1171 proven. 1225 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-09-23 19:35:48,410 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:48,410 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-09-23 19:35:48,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-09-23 19:35:48,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-09-23 19:35:48,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-09-23 19:35:48,412 INFO L87 Difference]: Start difference. First operand 107 states and 124 transitions. Second operand 38 states. [2018-09-23 19:35:48,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:48,621 INFO L93 Difference]: Finished difference Result 147 states and 182 transitions. [2018-09-23 19:35:48,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-23 19:35:48,622 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 106 [2018-09-23 19:35:48,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:48,623 INFO L225 Difference]: With dead ends: 147 [2018-09-23 19:35:48,623 INFO L226 Difference]: Without dead ends: 110 [2018-09-23 19:35:48,625 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-09-23 19:35:48,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-09-23 19:35:48,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2018-09-23 19:35:48,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-09-23 19:35:48,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 126 transitions. [2018-09-23 19:35:48,654 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 126 transitions. Word has length 106 [2018-09-23 19:35:48,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:48,654 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 126 transitions. [2018-09-23 19:35:48,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-09-23 19:35:48,654 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 126 transitions. [2018-09-23 19:35:48,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-09-23 19:35:48,655 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:48,655 INFO L375 BasicCegarLoop]: trace histogram [52, 36, 17, 1, 1, 1] [2018-09-23 19:35:48,656 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:48,656 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:48,656 INFO L82 PathProgramCache]: Analyzing trace with hash -2053786158, now seen corresponding path program 20 times [2018-09-23 19:35:48,656 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:48,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:48,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:48,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:35:48,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:49,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 1204 proven. 1296 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-09-23 19:35:49,538 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:49,538 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:49,553 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-23 19:35:49,608 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-23 19:35:49,608 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:35:49,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:49,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 1204 proven. 1296 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-09-23 19:35:49,660 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:49,661 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-09-23 19:35:49,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-09-23 19:35:49,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-09-23 19:35:49,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-09-23 19:35:49,662 INFO L87 Difference]: Start difference. First operand 109 states and 126 transitions. Second operand 39 states. [2018-09-23 19:35:49,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:49,871 INFO L93 Difference]: Finished difference Result 149 states and 184 transitions. [2018-09-23 19:35:49,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-23 19:35:49,873 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 108 [2018-09-23 19:35:49,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:49,874 INFO L225 Difference]: With dead ends: 149 [2018-09-23 19:35:49,874 INFO L226 Difference]: Without dead ends: 112 [2018-09-23 19:35:49,875 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-09-23 19:35:49,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-09-23 19:35:49,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2018-09-23 19:35:49,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-09-23 19:35:49,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 128 transitions. [2018-09-23 19:35:49,906 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 128 transitions. Word has length 108 [2018-09-23 19:35:49,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:49,906 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 128 transitions. [2018-09-23 19:35:49,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-09-23 19:35:49,906 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 128 transitions. [2018-09-23 19:35:49,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-09-23 19:35:49,907 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:49,907 INFO L375 BasicCegarLoop]: trace histogram [53, 37, 17, 1, 1, 1] [2018-09-23 19:35:49,908 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:49,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:49,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1638927124, now seen corresponding path program 21 times [2018-09-23 19:35:49,908 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:49,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:49,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:49,909 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:35:49,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:50,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 1237 proven. 1369 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-09-23 19:35:50,845 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:50,845 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:50,853 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-23 19:35:50,943 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-09-23 19:35:50,943 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:35:50,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:52,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 2284 proven. 545 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-09-23 19:35:52,669 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:52,669 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 77 [2018-09-23 19:35:52,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-09-23 19:35:52,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-09-23 19:35:52,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1559, Invalid=4447, Unknown=0, NotChecked=0, Total=6006 [2018-09-23 19:35:52,673 INFO L87 Difference]: Start difference. First operand 111 states and 128 transitions. Second operand 78 states. [2018-09-23 19:35:55,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:55,173 INFO L93 Difference]: Finished difference Result 886 states and 1299 transitions. [2018-09-23 19:35:55,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-09-23 19:35:55,173 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 110 [2018-09-23 19:35:55,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:55,178 INFO L225 Difference]: With dead ends: 886 [2018-09-23 19:35:55,178 INFO L226 Difference]: Without dead ends: 849 [2018-09-23 19:35:55,186 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5440 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4745, Invalid=18511, Unknown=0, NotChecked=0, Total=23256 [2018-09-23 19:35:55,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2018-09-23 19:35:55,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 155. [2018-09-23 19:35:55,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-09-23 19:35:55,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 193 transitions. [2018-09-23 19:35:55,303 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 193 transitions. Word has length 110 [2018-09-23 19:35:55,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:55,303 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 193 transitions. [2018-09-23 19:35:55,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-09-23 19:35:55,303 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 193 transitions. [2018-09-23 19:35:55,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-09-23 19:35:55,304 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:55,304 INFO L375 BasicCegarLoop]: trace histogram [75, 38, 38, 1, 1, 1] [2018-09-23 19:35:55,305 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:55,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:55,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1253490050, now seen corresponding path program 22 times [2018-09-23 19:35:55,305 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:55,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:55,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:55,306 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:35:55,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:56,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 2887 proven. 1444 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:35:56,186 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:56,186 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:56,194 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-23 19:35:56,269 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-23 19:35:56,269 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:35:56,273 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:56,311 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 2887 proven. 1444 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:35:56,332 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:56,332 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-09-23 19:35:56,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-09-23 19:35:56,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-09-23 19:35:56,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-09-23 19:35:56,334 INFO L87 Difference]: Start difference. First operand 155 states and 193 transitions. Second operand 41 states. [2018-09-23 19:35:56,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:56,685 INFO L93 Difference]: Finished difference Result 237 states and 314 transitions. [2018-09-23 19:35:56,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-23 19:35:56,685 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 154 [2018-09-23 19:35:56,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:56,686 INFO L225 Difference]: With dead ends: 237 [2018-09-23 19:35:56,686 INFO L226 Difference]: Without dead ends: 158 [2018-09-23 19:35:56,687 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-09-23 19:35:56,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-09-23 19:35:56,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2018-09-23 19:35:56,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-09-23 19:35:56,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 195 transitions. [2018-09-23 19:35:56,815 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 195 transitions. Word has length 154 [2018-09-23 19:35:56,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:56,815 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 195 transitions. [2018-09-23 19:35:56,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-09-23 19:35:56,815 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 195 transitions. [2018-09-23 19:35:56,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-09-23 19:35:56,815 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:56,816 INFO L375 BasicCegarLoop]: trace histogram [76, 39, 38, 1, 1, 1] [2018-09-23 19:35:56,816 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:56,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:56,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1772805096, now seen corresponding path program 23 times [2018-09-23 19:35:56,816 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:56,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:56,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:56,817 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:35:56,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:57,753 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 2962 proven. 1521 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:35:57,753 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:57,753 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:57,764 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-23 19:35:58,074 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 77 check-sat command(s) [2018-09-23 19:35:58,074 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:35:58,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:58,104 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 2962 proven. 1521 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:35:58,125 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:58,125 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-09-23 19:35:58,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-09-23 19:35:58,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-09-23 19:35:58,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-09-23 19:35:58,126 INFO L87 Difference]: Start difference. First operand 157 states and 195 transitions. Second operand 42 states. [2018-09-23 19:35:58,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:58,437 INFO L93 Difference]: Finished difference Result 239 states and 316 transitions. [2018-09-23 19:35:58,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-23 19:35:58,438 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 156 [2018-09-23 19:35:58,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:58,439 INFO L225 Difference]: With dead ends: 239 [2018-09-23 19:35:58,440 INFO L226 Difference]: Without dead ends: 160 [2018-09-23 19:35:58,441 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-09-23 19:35:58,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-09-23 19:35:58,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2018-09-23 19:35:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-09-23 19:35:58,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 197 transitions. [2018-09-23 19:35:58,546 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 197 transitions. Word has length 156 [2018-09-23 19:35:58,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:58,546 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 197 transitions. [2018-09-23 19:35:58,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-09-23 19:35:58,546 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 197 transitions. [2018-09-23 19:35:58,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-23 19:35:58,547 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:58,547 INFO L375 BasicCegarLoop]: trace histogram [77, 40, 38, 1, 1, 1] [2018-09-23 19:35:58,548 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:58,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:58,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1676609330, now seen corresponding path program 24 times [2018-09-23 19:35:58,548 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:58,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:58,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:58,549 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:35:58,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:59,301 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 3037 proven. 1600 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:35:59,301 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:59,301 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:59,309 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-23 19:35:59,450 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 77 check-sat command(s) [2018-09-23 19:35:59,450 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:35:59,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:59,482 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 3037 proven. 1600 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:35:59,503 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:35:59,503 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-09-23 19:35:59,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-09-23 19:35:59,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-09-23 19:35:59,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-09-23 19:35:59,505 INFO L87 Difference]: Start difference. First operand 159 states and 197 transitions. Second operand 43 states. [2018-09-23 19:35:59,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:59,804 INFO L93 Difference]: Finished difference Result 241 states and 318 transitions. [2018-09-23 19:35:59,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-23 19:35:59,805 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 158 [2018-09-23 19:35:59,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:59,806 INFO L225 Difference]: With dead ends: 241 [2018-09-23 19:35:59,806 INFO L226 Difference]: Without dead ends: 162 [2018-09-23 19:35:59,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-09-23 19:35:59,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-09-23 19:35:59,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2018-09-23 19:35:59,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-09-23 19:35:59,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 199 transitions. [2018-09-23 19:35:59,916 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 199 transitions. Word has length 158 [2018-09-23 19:35:59,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:59,917 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 199 transitions. [2018-09-23 19:35:59,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-09-23 19:35:59,917 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 199 transitions. [2018-09-23 19:35:59,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-09-23 19:35:59,917 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:59,917 INFO L375 BasicCegarLoop]: trace histogram [78, 41, 38, 1, 1, 1] [2018-09-23 19:35:59,918 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:59,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:59,918 INFO L82 PathProgramCache]: Analyzing trace with hash 849120204, now seen corresponding path program 25 times [2018-09-23 19:35:59,918 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:59,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:59,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:59,919 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:35:59,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:36:00,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 3112 proven. 1681 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:36:00,841 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:36:00,841 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:36:00,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:36:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:36:00,926 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:36:00,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 3112 proven. 1681 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:36:00,977 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:36:00,977 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-09-23 19:36:00,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-23 19:36:00,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-23 19:36:00,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-09-23 19:36:00,978 INFO L87 Difference]: Start difference. First operand 161 states and 199 transitions. Second operand 44 states. [2018-09-23 19:36:01,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:36:01,429 INFO L93 Difference]: Finished difference Result 243 states and 320 transitions. [2018-09-23 19:36:01,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-23 19:36:01,430 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 160 [2018-09-23 19:36:01,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:36:01,431 INFO L225 Difference]: With dead ends: 243 [2018-09-23 19:36:01,431 INFO L226 Difference]: Without dead ends: 164 [2018-09-23 19:36:01,432 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-09-23 19:36:01,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-09-23 19:36:01,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2018-09-23 19:36:01,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-09-23 19:36:01,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 201 transitions. [2018-09-23 19:36:01,629 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 201 transitions. Word has length 160 [2018-09-23 19:36:01,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:36:01,630 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 201 transitions. [2018-09-23 19:36:01,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-23 19:36:01,630 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 201 transitions. [2018-09-23 19:36:01,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-09-23 19:36:01,631 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:36:01,631 INFO L375 BasicCegarLoop]: trace histogram [79, 42, 38, 1, 1, 1] [2018-09-23 19:36:01,631 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:36:01,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:36:01,632 INFO L82 PathProgramCache]: Analyzing trace with hash 201019878, now seen corresponding path program 26 times [2018-09-23 19:36:01,632 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:36:01,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:36:01,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:36:01,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:36:01,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:36:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:36:02,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 3187 proven. 1764 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:36:02,738 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:36:02,738 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:36:02,746 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-23 19:36:02,818 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-23 19:36:02,818 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:36:02,822 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:36:02,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 3187 proven. 1764 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:36:02,866 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:36:02,866 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-09-23 19:36:02,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-09-23 19:36:02,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-09-23 19:36:02,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-09-23 19:36:02,868 INFO L87 Difference]: Start difference. First operand 163 states and 201 transitions. Second operand 45 states. [2018-09-23 19:36:03,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:36:03,667 INFO L93 Difference]: Finished difference Result 245 states and 322 transitions. [2018-09-23 19:36:03,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-23 19:36:03,671 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 162 [2018-09-23 19:36:03,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:36:03,672 INFO L225 Difference]: With dead ends: 245 [2018-09-23 19:36:03,672 INFO L226 Difference]: Without dead ends: 166 [2018-09-23 19:36:03,673 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-09-23 19:36:03,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-09-23 19:36:03,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2018-09-23 19:36:03,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-09-23 19:36:03,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 203 transitions. [2018-09-23 19:36:03,788 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 203 transitions. Word has length 162 [2018-09-23 19:36:03,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:36:03,788 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 203 transitions. [2018-09-23 19:36:03,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-09-23 19:36:03,788 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 203 transitions. [2018-09-23 19:36:03,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-09-23 19:36:03,788 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:36:03,789 INFO L375 BasicCegarLoop]: trace histogram [80, 43, 38, 1, 1, 1] [2018-09-23 19:36:03,789 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:36:03,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:36:03,789 INFO L82 PathProgramCache]: Analyzing trace with hash 146864512, now seen corresponding path program 27 times [2018-09-23 19:36:03,789 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:36:03,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:36:03,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:36:03,790 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:36:03,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:36:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:36:05,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 3262 proven. 1849 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:36:05,076 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:36:05,077 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:36:05,093 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-23 19:36:05,294 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 81 check-sat command(s) [2018-09-23 19:36:05,294 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:36:05,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:36:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 3262 proven. 1849 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:36:05,355 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:36:05,355 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-09-23 19:36:05,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-09-23 19:36:05,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-09-23 19:36:05,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-09-23 19:36:05,357 INFO L87 Difference]: Start difference. First operand 165 states and 203 transitions. Second operand 46 states. [2018-09-23 19:36:05,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:36:05,720 INFO L93 Difference]: Finished difference Result 247 states and 324 transitions. [2018-09-23 19:36:05,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-23 19:36:05,721 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 164 [2018-09-23 19:36:05,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:36:05,723 INFO L225 Difference]: With dead ends: 247 [2018-09-23 19:36:05,723 INFO L226 Difference]: Without dead ends: 168 [2018-09-23 19:36:05,724 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-09-23 19:36:05,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-09-23 19:36:05,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2018-09-23 19:36:05,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-09-23 19:36:05,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 205 transitions. [2018-09-23 19:36:05,846 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 205 transitions. Word has length 164 [2018-09-23 19:36:05,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:36:05,847 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 205 transitions. [2018-09-23 19:36:05,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-09-23 19:36:05,847 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 205 transitions. [2018-09-23 19:36:05,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-09-23 19:36:05,848 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:36:05,849 INFO L375 BasicCegarLoop]: trace histogram [81, 44, 38, 1, 1, 1] [2018-09-23 19:36:05,849 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:36:05,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:36:05,849 INFO L82 PathProgramCache]: Analyzing trace with hash -356834662, now seen corresponding path program 28 times [2018-09-23 19:36:05,850 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:36:05,850 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:36:05,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:36:05,851 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:36:05,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:36:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:36:07,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 3337 proven. 1936 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:36:07,298 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:36:07,298 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:36:07,310 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-23 19:36:07,403 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-23 19:36:07,404 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:36:07,409 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:36:07,440 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 3337 proven. 1936 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:36:07,470 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:36:07,470 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-09-23 19:36:07,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-09-23 19:36:07,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-09-23 19:36:07,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-09-23 19:36:07,472 INFO L87 Difference]: Start difference. First operand 167 states and 205 transitions. Second operand 47 states. [2018-09-23 19:36:08,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:36:08,013 INFO L93 Difference]: Finished difference Result 249 states and 326 transitions. [2018-09-23 19:36:08,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-23 19:36:08,013 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 166 [2018-09-23 19:36:08,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:36:08,014 INFO L225 Difference]: With dead ends: 249 [2018-09-23 19:36:08,014 INFO L226 Difference]: Without dead ends: 170 [2018-09-23 19:36:08,015 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-09-23 19:36:08,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-09-23 19:36:08,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 169. [2018-09-23 19:36:08,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-09-23 19:36:08,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 207 transitions. [2018-09-23 19:36:08,112 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 207 transitions. Word has length 166 [2018-09-23 19:36:08,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:36:08,112 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 207 transitions. [2018-09-23 19:36:08,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-09-23 19:36:08,113 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 207 transitions. [2018-09-23 19:36:08,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-09-23 19:36:08,114 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:36:08,114 INFO L375 BasicCegarLoop]: trace histogram [82, 45, 38, 1, 1, 1] [2018-09-23 19:36:08,114 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:36:08,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:36:08,114 INFO L82 PathProgramCache]: Analyzing trace with hash 919563572, now seen corresponding path program 29 times [2018-09-23 19:36:08,115 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:36:08,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:36:08,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:36:08,115 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:36:08,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:36:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:36:09,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 3412 proven. 2025 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:36:09,222 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:36:09,222 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:36:09,229 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-23 19:36:09,430 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 83 check-sat command(s) [2018-09-23 19:36:09,430 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:36:09,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:36:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 3412 proven. 2025 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:36:09,504 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:36:09,505 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-09-23 19:36:09,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-23 19:36:09,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-23 19:36:09,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-09-23 19:36:09,506 INFO L87 Difference]: Start difference. First operand 169 states and 207 transitions. Second operand 48 states. [2018-09-23 19:36:10,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:36:10,649 INFO L93 Difference]: Finished difference Result 251 states and 328 transitions. [2018-09-23 19:36:10,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-23 19:36:10,654 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 168 [2018-09-23 19:36:10,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:36:10,655 INFO L225 Difference]: With dead ends: 251 [2018-09-23 19:36:10,655 INFO L226 Difference]: Without dead ends: 172 [2018-09-23 19:36:10,656 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-09-23 19:36:10,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-09-23 19:36:10,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2018-09-23 19:36:10,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-09-23 19:36:10,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 209 transitions. [2018-09-23 19:36:10,779 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 209 transitions. Word has length 168 [2018-09-23 19:36:10,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:36:10,779 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 209 transitions. [2018-09-23 19:36:10,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-23 19:36:10,779 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 209 transitions. [2018-09-23 19:36:10,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-09-23 19:36:10,780 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:36:10,780 INFO L375 BasicCegarLoop]: trace histogram [83, 46, 38, 1, 1, 1] [2018-09-23 19:36:10,780 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:36:10,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:36:10,781 INFO L82 PathProgramCache]: Analyzing trace with hash -822380210, now seen corresponding path program 30 times [2018-09-23 19:36:10,781 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:36:10,781 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:36:10,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:36:10,782 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:36:10,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:36:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:36:12,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 3487 proven. 2116 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:36:12,475 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:36:12,475 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:36:12,482 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-23 19:36:12,635 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 84 check-sat command(s) [2018-09-23 19:36:12,635 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:36:12,643 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:36:12,674 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 3487 proven. 2116 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:36:12,701 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:36:12,701 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-09-23 19:36:12,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-09-23 19:36:12,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-09-23 19:36:12,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-09-23 19:36:12,702 INFO L87 Difference]: Start difference. First operand 171 states and 209 transitions. Second operand 49 states. [2018-09-23 19:36:13,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:36:13,001 INFO L93 Difference]: Finished difference Result 253 states and 330 transitions. [2018-09-23 19:36:13,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-23 19:36:13,002 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 170 [2018-09-23 19:36:13,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:36:13,003 INFO L225 Difference]: With dead ends: 253 [2018-09-23 19:36:13,003 INFO L226 Difference]: Without dead ends: 174 [2018-09-23 19:36:13,006 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-09-23 19:36:13,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-09-23 19:36:13,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2018-09-23 19:36:13,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-09-23 19:36:13,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 211 transitions. [2018-09-23 19:36:13,114 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 211 transitions. Word has length 170 [2018-09-23 19:36:13,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:36:13,114 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 211 transitions. [2018-09-23 19:36:13,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-09-23 19:36:13,115 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 211 transitions. [2018-09-23 19:36:13,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-09-23 19:36:13,115 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:36:13,115 INFO L375 BasicCegarLoop]: trace histogram [84, 47, 38, 1, 1, 1] [2018-09-23 19:36:13,115 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:36:13,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:36:13,116 INFO L82 PathProgramCache]: Analyzing trace with hash 206890728, now seen corresponding path program 31 times [2018-09-23 19:36:13,116 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:36:13,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:36:13,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:36:13,116 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:36:13,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:36:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:36:14,165 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 3562 proven. 2209 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:36:14,165 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:36:14,165 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:36:14,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:36:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:36:14,267 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:36:14,300 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 3562 proven. 2209 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:36:14,331 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:36:14,331 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-09-23 19:36:14,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-09-23 19:36:14,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-09-23 19:36:14,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-09-23 19:36:14,333 INFO L87 Difference]: Start difference. First operand 173 states and 211 transitions. Second operand 50 states. [2018-09-23 19:36:15,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:36:15,071 INFO L93 Difference]: Finished difference Result 255 states and 332 transitions. [2018-09-23 19:36:15,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-23 19:36:15,072 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 172 [2018-09-23 19:36:15,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:36:15,073 INFO L225 Difference]: With dead ends: 255 [2018-09-23 19:36:15,073 INFO L226 Difference]: Without dead ends: 176 [2018-09-23 19:36:15,074 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-09-23 19:36:15,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-09-23 19:36:15,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2018-09-23 19:36:15,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-09-23 19:36:15,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 213 transitions. [2018-09-23 19:36:15,237 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 213 transitions. Word has length 172 [2018-09-23 19:36:15,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:36:15,237 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 213 transitions. [2018-09-23 19:36:15,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-09-23 19:36:15,237 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 213 transitions. [2018-09-23 19:36:15,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-09-23 19:36:15,238 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:36:15,239 INFO L375 BasicCegarLoop]: trace histogram [85, 48, 38, 1, 1, 1] [2018-09-23 19:36:15,239 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:36:15,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:36:15,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1493784066, now seen corresponding path program 32 times [2018-09-23 19:36:15,239 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:36:15,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:36:15,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:36:15,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:36:15,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:36:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:36:16,588 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 3637 proven. 2304 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:36:16,589 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:36:16,589 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:36:16,596 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-23 19:36:16,676 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-23 19:36:16,676 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:36:16,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:36:16,731 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 3637 proven. 2304 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:36:16,752 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:36:16,753 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-09-23 19:36:16,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-09-23 19:36:16,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-09-23 19:36:16,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-09-23 19:36:16,754 INFO L87 Difference]: Start difference. First operand 175 states and 213 transitions. Second operand 51 states. [2018-09-23 19:36:17,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:36:17,258 INFO L93 Difference]: Finished difference Result 257 states and 334 transitions. [2018-09-23 19:36:17,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-23 19:36:17,258 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 174 [2018-09-23 19:36:17,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:36:17,259 INFO L225 Difference]: With dead ends: 257 [2018-09-23 19:36:17,259 INFO L226 Difference]: Without dead ends: 178 [2018-09-23 19:36:17,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-09-23 19:36:17,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-09-23 19:36:17,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2018-09-23 19:36:17,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-09-23 19:36:17,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 215 transitions. [2018-09-23 19:36:17,380 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 215 transitions. Word has length 174 [2018-09-23 19:36:17,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:36:17,380 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 215 transitions. [2018-09-23 19:36:17,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-09-23 19:36:17,380 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 215 transitions. [2018-09-23 19:36:17,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-09-23 19:36:17,381 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:36:17,381 INFO L375 BasicCegarLoop]: trace histogram [86, 49, 38, 1, 1, 1] [2018-09-23 19:36:17,381 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:36:17,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:36:17,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1247700636, now seen corresponding path program 33 times [2018-09-23 19:36:17,382 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:36:17,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:36:17,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:36:17,382 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:36:17,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:36:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:36:18,622 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 3712 proven. 2401 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:36:18,622 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:36:18,622 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:36:18,629 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-23 19:36:18,800 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 87 check-sat command(s) [2018-09-23 19:36:18,800 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:36:18,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:36:18,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 3712 proven. 2401 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2018-09-23 19:36:18,869 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:36:18,869 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-09-23 19:36:18,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-23 19:36:18,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-23 19:36:18,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-09-23 19:36:18,870 INFO L87 Difference]: Start difference. First operand 177 states and 215 transitions. Second operand 52 states. [2018-09-23 19:36:19,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:36:19,304 INFO L93 Difference]: Finished difference Result 294 states and 371 transitions. [2018-09-23 19:36:19,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-23 19:36:19,305 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 176 [2018-09-23 19:36:19,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:36:19,306 INFO L225 Difference]: With dead ends: 294 [2018-09-23 19:36:19,306 INFO L226 Difference]: Without dead ends: 215 [2018-09-23 19:36:19,307 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-09-23 19:36:19,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-09-23 19:36:19,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 179. [2018-09-23 19:36:19,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-09-23 19:36:19,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 217 transitions. [2018-09-23 19:36:19,415 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 217 transitions. Word has length 176 [2018-09-23 19:36:19,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:36:19,416 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 217 transitions. [2018-09-23 19:36:19,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-23 19:36:19,416 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 217 transitions. [2018-09-23 19:36:19,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-23 19:36:19,416 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:36:19,416 INFO L375 BasicCegarLoop]: trace histogram [87, 50, 38, 1, 1, 1] [2018-09-23 19:36:19,417 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:36:19,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:36:19,417 INFO L82 PathProgramCache]: Analyzing trace with hash 984725686, now seen corresponding path program 34 times [2018-09-23 19:36:19,417 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:36:19,417 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:36:19,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:36:19,418 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:36:19,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:36:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:36:20,816 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 4768 proven. 2813 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-09-23 19:36:20,817 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:36:20,817 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:36:20,824 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-23 19:36:20,904 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-23 19:36:20,905 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:36:20,909 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:36:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 4768 proven. 2813 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-09-23 19:36:20,979 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:36:20,979 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-09-23 19:36:20,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-09-23 19:36:20,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-09-23 19:36:20,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-09-23 19:36:20,981 INFO L87 Difference]: Start difference. First operand 179 states and 217 transitions. Second operand 53 states. [2018-09-23 19:36:22,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:36:22,547 INFO L93 Difference]: Finished difference Result 1182 states and 1726 transitions. [2018-09-23 19:36:22,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-23 19:36:22,547 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 178 [2018-09-23 19:36:22,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:36:22,555 INFO L225 Difference]: With dead ends: 1182 [2018-09-23 19:36:22,555 INFO L226 Difference]: Without dead ends: 1180 [2018-09-23 19:36:22,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-09-23 19:36:22,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2018-09-23 19:36:22,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 205. [2018-09-23 19:36:22,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-09-23 19:36:22,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 256 transitions. [2018-09-23 19:36:22,841 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 256 transitions. Word has length 178 [2018-09-23 19:36:22,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:36:22,842 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 256 transitions. [2018-09-23 19:36:22,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-09-23 19:36:22,842 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 256 transitions. [2018-09-23 19:36:22,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-09-23 19:36:22,843 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:36:22,844 INFO L375 BasicCegarLoop]: trace histogram [100, 51, 50, 1, 1, 1] [2018-09-23 19:36:22,844 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:36:22,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:36:22,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1557903122, now seen corresponding path program 35 times [2018-09-23 19:36:22,844 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:36:22,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:36:22,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:36:22,845 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:36:22,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:36:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:36:25,124 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 5098 proven. 2601 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2018-09-23 19:36:25,125 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:36:25,125 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:36:25,134 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-23 19:36:25,375 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 101 check-sat command(s) [2018-09-23 19:36:25,375 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:36:25,381 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:36:25,509 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 5098 proven. 2601 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2018-09-23 19:36:25,539 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:36:25,540 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-09-23 19:36:25,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-09-23 19:36:25,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-09-23 19:36:25,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=2861, Unknown=0, NotChecked=0, Total=2970 [2018-09-23 19:36:25,541 INFO L87 Difference]: Start difference. First operand 205 states and 256 transitions. Second operand 55 states. [2018-09-23 19:36:37,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:36:37,680 INFO L93 Difference]: Finished difference Result 3007 states and 4385 transitions. [2018-09-23 19:36:37,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-23 19:36:37,680 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 204 [2018-09-23 19:36:37,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:36:37,690 INFO L225 Difference]: With dead ends: 3007 [2018-09-23 19:36:37,691 INFO L226 Difference]: Without dead ends: 2902 [2018-09-23 19:36:37,692 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=109, Invalid=2861, Unknown=0, NotChecked=0, Total=2970 [2018-09-23 19:36:37,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2018-09-23 19:36:43,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 2804. [2018-09-23 19:36:43,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2804 states. [2018-09-23 19:36:43,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2804 states to 2804 states and 2904 transitions. [2018-09-23 19:36:43,919 INFO L78 Accepts]: Start accepts. Automaton has 2804 states and 2904 transitions. Word has length 204 [2018-09-23 19:36:43,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:36:43,919 INFO L480 AbstractCegarLoop]: Abstraction has 2804 states and 2904 transitions. [2018-09-23 19:36:43,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-09-23 19:36:43,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2804 states and 2904 transitions. [2018-09-23 19:36:43,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-09-23 19:36:43,921 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:36:43,921 INFO L375 BasicCegarLoop]: trace histogram [101, 52, 50, 1, 1, 1] [2018-09-23 19:36:43,921 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:36:43,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:36:43,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1798736390, now seen corresponding path program 36 times [2018-09-23 19:36:43,922 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:36:43,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:36:43,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:36:43,922 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:36:43,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:36:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:36:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 5302 proven. 4901 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-09-23 19:36:46,243 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:36:46,243 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:36:46,251 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-23 19:36:46,451 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 102 check-sat command(s) [2018-09-23 19:36:46,451 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:36:46,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:36:46,533 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 5302 proven. 4901 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-09-23 19:36:46,564 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:36:46,564 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-09-23 19:36:46,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-09-23 19:36:46,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-09-23 19:36:46,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-09-23 19:36:46,565 INFO L87 Difference]: Start difference. First operand 2804 states and 2904 transitions. Second operand 54 states. [2018-09-23 19:36:54,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:36:54,090 INFO L93 Difference]: Finished difference Result 5611 states and 5812 transitions. [2018-09-23 19:36:54,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-23 19:36:54,090 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 206 [2018-09-23 19:36:54,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:36:54,102 INFO L225 Difference]: With dead ends: 5611 [2018-09-23 19:36:54,102 INFO L226 Difference]: Without dead ends: 2806 [2018-09-23 19:36:54,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-09-23 19:36:54,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2018-09-23 19:37:00,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2806. [2018-09-23 19:37:00,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2806 states. [2018-09-23 19:37:00,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 2906 transitions. [2018-09-23 19:37:00,404 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 2906 transitions. Word has length 206 [2018-09-23 19:37:00,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:37:00,405 INFO L480 AbstractCegarLoop]: Abstraction has 2806 states and 2906 transitions. [2018-09-23 19:37:00,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-09-23 19:37:00,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 2906 transitions. [2018-09-23 19:37:00,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-09-23 19:37:00,406 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:37:00,406 INFO L375 BasicCegarLoop]: trace histogram [102, 52, 51, 1, 1, 1] [2018-09-23 19:37:00,406 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:37:00,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:37:00,406 INFO L82 PathProgramCache]: Analyzing trace with hash -132992352, now seen corresponding path program 37 times [2018-09-23 19:37:00,406 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:37:00,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:37:00,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:37:00,407 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:37:00,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:37:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:37:01,641 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 7802 proven. 0 refuted. 0 times theorem prover too weak. 2704 trivial. 0 not checked. [2018-09-23 19:37:01,641 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-23 19:37:01,641 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2018-09-23 19:37:01,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-09-23 19:37:01,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-09-23 19:37:01,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-09-23 19:37:01,642 INFO L87 Difference]: Start difference. First operand 2806 states and 2906 transitions. Second operand 53 states. [2018-09-23 19:37:01,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:37:01,909 INFO L93 Difference]: Finished difference Result 2806 states and 2906 transitions. [2018-09-23 19:37:01,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-23 19:37:01,909 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 208 [2018-09-23 19:37:01,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:37:01,909 INFO L225 Difference]: With dead ends: 2806 [2018-09-23 19:37:01,910 INFO L226 Difference]: Without dead ends: 0 [2018-09-23 19:37:01,913 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-09-23 19:37:01,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-23 19:37:01,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-23 19:37:01,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-23 19:37:01,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-23 19:37:01,914 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 208 [2018-09-23 19:37:01,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:37:01,914 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-23 19:37:01,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-09-23 19:37:01,914 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-23 19:37:01,914 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-23 19:37:01,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-23 19:37:02,061 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-23 19:37:09,540 WARN L178 SmtUtils]: Spent 7.60 s on a formula simplification. DAG size of input: 1728 DAG size of output: 1112 [2018-09-23 19:37:12,342 WARN L178 SmtUtils]: Spent 2.80 s on a formula simplification. DAG size of input: 1585 DAG size of output: 1115 [2018-09-23 19:37:24,149 WARN L178 SmtUtils]: Spent 11.79 s on a formula simplification. DAG size of input: 1112 DAG size of output: 511 [2018-09-23 19:37:33,421 WARN L178 SmtUtils]: Spent 9.26 s on a formula simplification. DAG size of input: 1112 DAG size of output: 509 [2018-09-23 19:37:33,426 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 55) no Hoare annotation was computed. [2018-09-23 19:37:33,426 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 55) no Hoare annotation was computed. [2018-09-23 19:37:33,426 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 55) no Hoare annotation was computed. [2018-09-23 19:37:33,426 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 54) no Hoare annotation was computed. [2018-09-23 19:37:33,429 INFO L422 ceAbstractionStarter]: At program point L52(lines 20 52) the Hoare annotation is: (let ((.cse9 (<= 46 ULTIMATE.start_main_~y~4)) (.cse8 (<= ULTIMATE.start_main_~y~4 46)) (.cse11 (<= 2 ULTIMATE.start_main_~y~4)) (.cse10 (<= ULTIMATE.start_main_~y~4 2)) (.cse22 (<= 21 ULTIMATE.start_main_~y~4)) (.cse23 (<= ULTIMATE.start_main_~y~4 21)) (.cse32 (<= ULTIMATE.start_main_~y~4 44)) (.cse33 (<= 44 ULTIMATE.start_main_~y~4)) (.cse13 (<= ULTIMATE.start_main_~y~4 42)) (.cse12 (<= 42 ULTIMATE.start_main_~y~4)) (.cse43 (<= ULTIMATE.start_main_~y~4 12)) (.cse42 (<= 12 ULTIMATE.start_main_~y~4)) (.cse50 (<= ULTIMATE.start_main_~y~4 22)) (.cse51 (<= 22 ULTIMATE.start_main_~y~4)) (.cse28 (<= ULTIMATE.start_main_~y~4 29)) (.cse29 (<= 29 ULTIMATE.start_main_~y~4)) (.cse62 (<= 16 ULTIMATE.start_main_~y~4)) (.cse63 (<= ULTIMATE.start_main_~y~4 16)) (.cse60 (<= ULTIMATE.start_main_~y~4 30)) (.cse61 (<= 30 ULTIMATE.start_main_~y~4)) (.cse2 (<= 4 ULTIMATE.start_main_~y~4)) (.cse3 (<= ULTIMATE.start_main_~y~4 4)) (.cse7 (<= ULTIMATE.start_main_~y~4 18)) (.cse6 (<= 18 ULTIMATE.start_main_~y~4)) (.cse34 (<= 45 ULTIMATE.start_main_~y~4)) (.cse35 (<= ULTIMATE.start_main_~y~4 45)) (.cse68 (<= 35 ULTIMATE.start_main_~y~4)) (.cse69 (<= ULTIMATE.start_main_~y~4 35)) (.cse4 (<= 31 ULTIMATE.start_main_~y~4)) (.cse5 (<= ULTIMATE.start_main_~y~4 31)) (.cse75 (<= ULTIMATE.start_main_~y~4 38)) (.cse74 (<= 38 ULTIMATE.start_main_~y~4)) (.cse84 (<= ULTIMATE.start_main_~y~4 13)) (.cse85 (<= 13 ULTIMATE.start_main_~y~4)) (.cse36 (<= 48 ULTIMATE.start_main_~y~4)) (.cse37 (<= ULTIMATE.start_main_~y~4 48)) (.cse26 (<= 32 ULTIMATE.start_main_~y~4)) (.cse27 (<= ULTIMATE.start_main_~y~4 32)) (.cse16 (<= 19 ULTIMATE.start_main_~y~4)) (.cse17 (<= ULTIMATE.start_main_~y~4 19)) (.cse46 (<= 43 ULTIMATE.start_main_~y~4)) (.cse47 (<= ULTIMATE.start_main_~y~4 43)) (.cse80 (<= 6 ULTIMATE.start_main_~y~4)) (.cse81 (<= ULTIMATE.start_main_~y~4 6)) (.cse18 (<= 5 ULTIMATE.start_main_~y~4)) (.cse19 (<= ULTIMATE.start_main_~y~4 5)) (.cse55 (<= 34 ULTIMATE.start_main_~y~4)) (.cse54 (<= ULTIMATE.start_main_~y~4 34)) (.cse76 (<= ULTIMATE.start_main_~y~4 0)) (.cse77 (<= 0 ULTIMATE.start_main_~y~4)) (.cse83 (<= 3 ULTIMATE.start_main_~y~4)) (.cse82 (<= ULTIMATE.start_main_~y~4 3)) (.cse66 (<= ULTIMATE.start_main_~y~4 36)) (.cse67 (<= 36 ULTIMATE.start_main_~y~4)) (.cse71 (<= 25 ULTIMATE.start_main_~y~4)) (.cse70 (<= ULTIMATE.start_main_~y~4 25)) (.cse87 (<= 23 ULTIMATE.start_main_~y~4)) (.cse86 (<= ULTIMATE.start_main_~y~4 23)) (.cse57 (<= ULTIMATE.start_main_~y~4 37)) (.cse56 (<= 37 ULTIMATE.start_main_~y~4)) (.cse92 (<= ULTIMATE.start_main_~y~4 15)) (.cse93 (<= 15 ULTIMATE.start_main_~y~4)) (.cse21 (<= ULTIMATE.start_main_~y~4 40)) (.cse20 (<= 40 ULTIMATE.start_main_~y~4)) (.cse58 (<= ULTIMATE.start_main_~y~4 27)) (.cse59 (<= 27 ULTIMATE.start_main_~y~4)) (.cse72 (<= 8 ULTIMATE.start_main_~y~4)) (.cse73 (<= ULTIMATE.start_main_~y~4 8)) (.cse52 (<= 47 ULTIMATE.start_main_~y~4)) (.cse53 (<= ULTIMATE.start_main_~y~4 47)) (.cse48 (<= ULTIMATE.start_main_~y~4 7)) (.cse49 (<= 7 ULTIMATE.start_main_~y~4)) (.cse38 (<= 14 ULTIMATE.start_main_~y~4)) (.cse39 (<= ULTIMATE.start_main_~y~4 14)) (.cse45 (<= ULTIMATE.start_main_~y~4 39)) (.cse44 (<= 39 ULTIMATE.start_main_~y~4)) (.cse78 (<= 17 ULTIMATE.start_main_~y~4)) (.cse79 (<= ULTIMATE.start_main_~y~4 17)) (.cse30 (<= ULTIMATE.start_main_~y~4 10)) (.cse31 (<= 10 ULTIMATE.start_main_~y~4)) (.cse1 (<= ULTIMATE.start_main_~y~4 24)) (.cse0 (<= 24 ULTIMATE.start_main_~y~4)) (.cse94 (<= 49 ULTIMATE.start_main_~y~4)) (.cse95 (<= ULTIMATE.start_main_~y~4 49)) (.cse91 (<= ULTIMATE.start_main_~y~4 28)) (.cse90 (<= 28 ULTIMATE.start_main_~y~4)) (.cse99 (<= 26 ULTIMATE.start_main_~y~4)) (.cse98 (<= ULTIMATE.start_main_~y~4 26)) (.cse40 (<= ULTIMATE.start_main_~y~4 9)) (.cse41 (<= 9 ULTIMATE.start_main_~y~4)) (.cse14 (<= 33 ULTIMATE.start_main_~y~4)) (.cse15 (<= ULTIMATE.start_main_~y~4 33)) (.cse96 (<= ULTIMATE.start_main_~y~4 1)) (.cse97 (<= 1 ULTIMATE.start_main_~y~4)) (.cse64 (<= 20 ULTIMATE.start_main_~y~4)) (.cse65 (<= ULTIMATE.start_main_~y~4 20)) (.cse24 (<= ULTIMATE.start_main_~y~4 41)) (.cse25 (<= 41 ULTIMATE.start_main_~y~4)) (.cse89 (<= 11 ULTIMATE.start_main_~y~4)) (.cse88 (<= ULTIMATE.start_main_~y~4 11))) (or (and .cse0 (<= ULTIMATE.start_main_~x~4 24) (<= 24 ULTIMATE.start_main_~x~4) .cse1) (and .cse2 (<= ULTIMATE.start_main_~x~4 96) (<= 96 ULTIMATE.start_main_~x~4) .cse3) (and (<= ULTIMATE.start_main_~x~4 31) .cse4 .cse5 (<= 31 ULTIMATE.start_main_~x~4)) (and .cse6 (<= 18 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 18) .cse7) (and (<= ULTIMATE.start_main_~x~4 46) (<= 46 ULTIMATE.start_main_~x~4) .cse8 .cse9) (and .cse10 .cse11 (<= 2 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 2)) (and (<= 58 ULTIMATE.start_main_~x~4) .cse12 .cse13 (<= ULTIMATE.start_main_~x~4 58)) (and (<= 67 ULTIMATE.start_main_~x~4) .cse14 .cse15 (<= ULTIMATE.start_main_~x~4 67)) (and .cse16 (<= 19 ULTIMATE.start_main_~x~4) .cse17 (<= ULTIMATE.start_main_~x~4 19)) (and (<= ULTIMATE.start_main_~x~4 5) .cse18 .cse19 (<= 5 ULTIMATE.start_main_~x~4)) (and .cse20 (<= 60 ULTIMATE.start_main_~x~4) .cse21 (<= ULTIMATE.start_main_~x~4 60)) (and .cse22 (<= 79 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 79) .cse23) (and (<= ULTIMATE.start_main_~x~4 59) .cse24 .cse25 (<= 59 ULTIMATE.start_main_~x~4)) (and (<= ULTIMATE.start_main_~x~4 54) .cse9 .cse8 (<= 54 ULTIMATE.start_main_~x~4)) (and (<= ULTIMATE.start_main_~x~4 68) (<= 68 ULTIMATE.start_main_~x~4) .cse26 .cse27) (and (<= 71 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 71) .cse28 .cse29) (and .cse11 (<= ULTIMATE.start_main_~x~4 98) .cse10 (<= 98 ULTIMATE.start_main_~x~4)) (and .cse30 (<= ULTIMATE.start_main_~x~4 90) (<= 90 ULTIMATE.start_main_~x~4) .cse31) (and (<= 44 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 44) .cse32 .cse33) (and .cse34 (<= 45 ULTIMATE.start_main_~x~4) .cse35 (<= ULTIMATE.start_main_~x~4 45)) (and (<= 48 ULTIMATE.start_main_~x~4) .cse36 .cse37 (<= ULTIMATE.start_main_~x~4 48)) (and .cse38 (<= 14 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 14) .cse39) (and .cse40 (<= 9 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 9) .cse41) (and (<= 12 ULTIMATE.start_main_~x~4) .cse42 .cse43 (<= ULTIMATE.start_main_~x~4 12)) (and .cse44 (<= ULTIMATE.start_main_~x~4 39) .cse45 (<= 39 ULTIMATE.start_main_~x~4)) (and .cse46 (<= 57 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 57) .cse47) (and .cse48 .cse49 (<= ULTIMATE.start_main_~x~4 93) (<= 93 ULTIMATE.start_main_~x~4)) (and (<= ULTIMATE.start_main_~x~4 21) .cse22 (<= 21 ULTIMATE.start_main_~x~4) .cse23) (and (<= 56 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 56) .cse32 .cse33) (and .cse50 (<= ULTIMATE.start_main_~x~4 78) (<= 78 ULTIMATE.start_main_~x~4) .cse51) (and .cse13 .cse12 (<= ULTIMATE.start_main_~x~4 42) (<= 42 ULTIMATE.start_main_~x~4)) (and (<= 53 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 53) .cse52 .cse53) (and (<= ULTIMATE.start_main_~x~4 50) (<= ULTIMATE.start_main_~y~4 50) (<= 50 ULTIMATE.start_main_~x~4) (<= 50 ULTIMATE.start_main_~y~4)) (and (<= 34 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 34) .cse54 .cse55) (and .cse56 (<= ULTIMATE.start_main_~x~4 37) .cse57 (<= 37 ULTIMATE.start_main_~x~4)) (and (<= 88 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 88) .cse43 .cse42) (and .cse58 (<= ULTIMATE.start_main_~x~4 27) .cse59 (<= 27 ULTIMATE.start_main_~x~4)) (and .cse50 (<= ULTIMATE.start_main_~x~4 22) (<= 22 ULTIMATE.start_main_~x~4) .cse51) (and .cse60 (<= ULTIMATE.start_main_~x~4 70) (<= 70 ULTIMATE.start_main_~x~4) .cse61) (and (<= 29 ULTIMATE.start_main_~x~4) .cse28 .cse29 (<= ULTIMATE.start_main_~x~4 29)) (and .cse62 (<= ULTIMATE.start_main_~x~4 84) .cse63 (<= 84 ULTIMATE.start_main_~x~4)) (and (<= ULTIMATE.start_main_~x~4 80) .cse64 (<= 80 ULTIMATE.start_main_~x~4) .cse65) (and (<= ULTIMATE.start_main_~x~4 64) .cse66 (<= 64 ULTIMATE.start_main_~x~4) .cse67) (and (<= ULTIMATE.start_main_~x~4 35) .cse68 (<= 35 ULTIMATE.start_main_~x~4) .cse69) (and (<= ULTIMATE.start_main_~x~4 16) (<= 16 ULTIMATE.start_main_~x~4) .cse62 .cse63) (and .cse60 (<= ULTIMATE.start_main_~x~4 30) .cse61 (<= 30 ULTIMATE.start_main_~x~4)) (and (<= ULTIMATE.start_main_~x~4 75) (<= 75 ULTIMATE.start_main_~x~4) .cse70 .cse71) (and (<= ULTIMATE.start_main_~x~4 8) .cse72 .cse73 (<= 8 ULTIMATE.start_main_~x~4)) (and .cse74 (<= ULTIMATE.start_main_~x~4 62) .cse75 (<= 62 ULTIMATE.start_main_~x~4)) (and .cse76 .cse77 (<= ULTIMATE.start_main_~x~4 100) (<= 100 ULTIMATE.start_main_~x~4)) (and .cse2 (<= ULTIMATE.start_main_~x~4 4) (<= 4 ULTIMATE.start_main_~x~4) .cse3) (and (<= ULTIMATE.start_main_~x~4 17) .cse78 .cse79 (<= 17 ULTIMATE.start_main_~x~4)) (and (<= ULTIMATE.start_main_~x~4 82) (<= 82 ULTIMATE.start_main_~x~4) .cse7 .cse6) (and (<= 55 ULTIMATE.start_main_~x~4) .cse34 (<= ULTIMATE.start_main_~x~4 55) .cse35) (and .cse80 .cse81 (<= ULTIMATE.start_main_~x~4 94) (<= 94 ULTIMATE.start_main_~x~4)) (and .cse68 .cse69 (<= 65 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 65)) (and .cse4 (<= 69 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 69) .cse5) (and (<= 3 ULTIMATE.start_main_~x~4) .cse82 .cse83 (<= ULTIMATE.start_main_~x~4 3)) (and .cse84 (<= ULTIMATE.start_main_~x~4 87) .cse85 (<= 87 ULTIMATE.start_main_~x~4)) (and (<= 38 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 38) .cse75 .cse74) (and .cse84 .cse85 (<= ULTIMATE.start_main_~x~4 13) (<= 13 ULTIMATE.start_main_~x~4)) (and (<= ULTIMATE.start_main_~x~4 23) (<= 23 ULTIMATE.start_main_~x~4) .cse86 .cse87) (and (<= ULTIMATE.start_main_~x~4 52) (<= 52 ULTIMATE.start_main_~x~4) .cse36 .cse37) (and (<= ULTIMATE.start_main_~x~4 11) (<= 11 ULTIMATE.start_main_~x~4) .cse88 .cse89) (and (<= ULTIMATE.start_main_~x~4 32) .cse26 (<= 32 ULTIMATE.start_main_~x~4) .cse27) (and .cse16 (<= ULTIMATE.start_main_~x~4 81) (<= 81 ULTIMATE.start_main_~x~4) .cse17) (and .cse46 (<= ULTIMATE.start_main_~x~4 43) (<= 43 ULTIMATE.start_main_~x~4) .cse47) (and .cse90 (<= 72 ULTIMATE.start_main_~x~4) .cse91 (<= ULTIMATE.start_main_~x~4 72)) (and (<= 6 ULTIMATE.start_main_~x~4) .cse80 .cse81 (<= ULTIMATE.start_main_~x~4 6)) (and .cse18 .cse19 (<= 95 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 95)) (and (<= 66 ULTIMATE.start_main_~x~4) .cse55 (<= ULTIMATE.start_main_~x~4 66) .cse54) (and .cse92 .cse93 (<= 85 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 85)) (and .cse76 .cse77 (<= ULTIMATE.start_main_~x~4 0) (<= 0 ULTIMATE.start_main_~x~4)) (and .cse83 .cse82 (<= 97 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 97)) (and (<= 36 ULTIMATE.start_main_~x~4) .cse66 (<= ULTIMATE.start_main_~x~4 36) .cse67) (and .cse71 .cse70 (<= ULTIMATE.start_main_~x~4 25) (<= 25 ULTIMATE.start_main_~x~4)) (and (<= ULTIMATE.start_main_~x~4 77) .cse87 (<= 77 ULTIMATE.start_main_~x~4) .cse86) (and (<= 63 ULTIMATE.start_main_~x~4) .cse57 .cse56 (<= ULTIMATE.start_main_~x~4 63)) (and .cse92 (<= 15 ULTIMATE.start_main_~x~4) .cse93 (<= ULTIMATE.start_main_~x~4 15)) (and (<= 51 ULTIMATE.start_main_~x~4) .cse94 .cse95 (<= ULTIMATE.start_main_~x~4 51)) (and (<= ULTIMATE.start_main_~x~4 40) .cse21 (<= 40 ULTIMATE.start_main_~x~4) .cse20) (and (<= 99 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 99) .cse96 .cse97) (and .cse58 (<= ULTIMATE.start_main_~x~4 73) .cse59 (<= 73 ULTIMATE.start_main_~x~4)) (and (<= ULTIMATE.start_main_~x~4 92) .cse72 .cse73 (<= 92 ULTIMATE.start_main_~x~4)) (and .cse52 (<= 47 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 47) .cse53) (and (<= ULTIMATE.start_main_~x~4 7) .cse48 .cse49 (<= 7 ULTIMATE.start_main_~x~4)) (and (<= 86 ULTIMATE.start_main_~x~4) .cse38 .cse39 (<= ULTIMATE.start_main_~x~4 86)) (and (<= 61 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 61) .cse45 .cse44) (and (<= 83 ULTIMATE.start_main_~x~4) .cse78 .cse79 (<= ULTIMATE.start_main_~x~4 83)) (and .cse30 (<= ULTIMATE.start_main_~x~4 10) .cse31 (<= 10 ULTIMATE.start_main_~x~4)) (and (<= ULTIMATE.start_main_~x~4 26) .cse98 .cse99 (<= 26 ULTIMATE.start_main_~x~4)) (and (<= ULTIMATE.start_main_~x~4 76) .cse1 (<= 76 ULTIMATE.start_main_~x~4) .cse0) (and (<= 49 ULTIMATE.start_main_~x~4) .cse94 .cse95 (<= ULTIMATE.start_main_~x~4 49)) (and .cse91 (<= ULTIMATE.start_main_~x~4 28) .cse90 (<= 28 ULTIMATE.start_main_~x~4)) (and .cse99 (<= 74 ULTIMATE.start_main_~x~4) .cse98 (<= ULTIMATE.start_main_~x~4 74)) (and (<= ULTIMATE.start_main_~x~4 91) .cse40 .cse41 (<= 91 ULTIMATE.start_main_~x~4)) (and (<= ULTIMATE.start_main_~x~4 33) .cse14 (<= 33 ULTIMATE.start_main_~x~4) .cse15) (and (<= ULTIMATE.start_main_~x~4 1) .cse96 .cse97 (<= 1 ULTIMATE.start_main_~x~4)) (and (<= 20 ULTIMATE.start_main_~x~4) .cse64 (<= ULTIMATE.start_main_~x~4 20) .cse65) (and (<= ULTIMATE.start_main_~x~4 41) (<= 41 ULTIMATE.start_main_~x~4) .cse24 .cse25) (and (<= ULTIMATE.start_main_~x~4 89) (<= 89 ULTIMATE.start_main_~x~4) .cse89 .cse88))) [2018-09-23 19:37:33,429 INFO L422 ceAbstractionStarter]: At program point L46(lines 46 53) the Hoare annotation is: false [2018-09-23 19:37:33,430 INFO L422 ceAbstractionStarter]: At program point L36(lines 30 47) the Hoare annotation is: (let ((.cse30 (<= ULTIMATE.start_main_~y~4 34)) (.cse31 (<= 34 ULTIMATE.start_main_~y~4)) (.cse35 (<= ULTIMATE.start_main_~y~4 45)) (.cse34 (<= 45 ULTIMATE.start_main_~y~4)) (.cse32 (<= 19 ULTIMATE.start_main_~y~4)) (.cse33 (<= ULTIMATE.start_main_~y~4 19)) (.cse42 (<= ULTIMATE.start_main_~y~4 9)) (.cse43 (<= 9 ULTIMATE.start_main_~y~4)) (.cse36 (<= 5 ULTIMATE.start_main_~y~4)) (.cse37 (<= ULTIMATE.start_main_~y~4 5)) (.cse3 (<= 28 ULTIMATE.start_main_~y~4)) (.cse2 (<= ULTIMATE.start_main_~y~4 28)) (.cse52 (<= 4 ULTIMATE.start_main_~y~4)) (.cse53 (<= ULTIMATE.start_main_~y~4 4)) (.cse10 (<= 33 ULTIMATE.start_main_~y~4)) (.cse11 (<= ULTIMATE.start_main_~y~4 33)) (.cse22 (<= ULTIMATE.start_main_~y~4 23)) (.cse23 (<= 23 ULTIMATE.start_main_~y~4)) (.cse24 (<= ULTIMATE.start_main_~y~4 11)) (.cse25 (<= 11 ULTIMATE.start_main_~y~4)) (.cse26 (<= 20 ULTIMATE.start_main_~y~4)) (.cse27 (<= ULTIMATE.start_main_~y~4 20)) (.cse38 (<= ULTIMATE.start_main_~y~4 13)) (.cse39 (<= 13 ULTIMATE.start_main_~y~4)) (.cse67 (<= 37 ULTIMATE.start_main_~y~4)) (.cse66 (<= ULTIMATE.start_main_~y~4 37)) (.cse63 (<= 42 ULTIMATE.start_main_~y~4)) (.cse62 (<= ULTIMATE.start_main_~y~4 42)) (.cse72 (<= ULTIMATE.start_main_~y~4 38)) (.cse73 (<= 38 ULTIMATE.start_main_~y~4)) (.cse50 (<= ULTIMATE.start_main_~y~4 44)) (.cse51 (<= 44 ULTIMATE.start_main_~y~4)) (.cse65 (<= 46 ULTIMATE.start_main_~y~4)) (.cse64 (<= ULTIMATE.start_main_~y~4 46)) (.cse60 (<= ULTIMATE.start_main_~y~4 30)) (.cse61 (<= 30 ULTIMATE.start_main_~y~4)) (.cse78 (<= ULTIMATE.start_main_~y~4 7)) (.cse79 (<= 7 ULTIMATE.start_main_~y~4)) (.cse13 (<= ULTIMATE.start_main_~y~4 22)) (.cse12 (<= 22 ULTIMATE.start_main_~y~4)) (.cse20 (<= ULTIMATE.start_main_~y~4 10)) (.cse21 (<= 10 ULTIMATE.start_main_~y~4)) (.cse18 (<= 8 ULTIMATE.start_main_~y~4)) (.cse19 (<= ULTIMATE.start_main_~y~4 8)) (.cse40 (<= ULTIMATE.start_main_~y~4 27)) (.cse41 (<= 27 ULTIMATE.start_main_~y~4)) (.cse48 (<= 24 ULTIMATE.start_main_~y~4)) (.cse49 (<= ULTIMATE.start_main_~y~4 24)) (.cse81 (<= 49 ULTIMATE.start_main_~y~4)) (.cse80 (<= ULTIMATE.start_main_~y~4 49)) (.cse44 (<= 25 ULTIMATE.start_main_~y~4)) (.cse45 (<= ULTIMATE.start_main_~y~4 25)) (.cse86 (<= ULTIMATE.start_main_~y~4 1)) (.cse87 (<= 1 ULTIMATE.start_main_~y~4)) (.cse54 (<= 6 ULTIMATE.start_main_~y~4)) (.cse55 (<= ULTIMATE.start_main_~y~4 6)) (.cse56 (<= 16 ULTIMATE.start_main_~y~4)) (.cse57 (<= ULTIMATE.start_main_~y~4 16)) (.cse17 (<= ULTIMATE.start_main_~y~4 43)) (.cse16 (<= 43 ULTIMATE.start_main_~y~4)) (.cse70 (<= 31 ULTIMATE.start_main_~y~4)) (.cse71 (<= ULTIMATE.start_main_~y~4 31)) (.cse58 (<= ULTIMATE.start_main_~y~4 15)) (.cse59 (<= 15 ULTIMATE.start_main_~y~4)) (.cse76 (<= 14 ULTIMATE.start_main_~y~4)) (.cse77 (<= ULTIMATE.start_main_~y~4 14)) (.cse74 (<= ULTIMATE.start_main_~y~4 2)) (.cse75 (<= 2 ULTIMATE.start_main_~y~4)) (.cse94 (<= 47 ULTIMATE.start_main_~y~4)) (.cse95 (<= ULTIMATE.start_main_~y~4 47)) (.cse28 (<= 17 ULTIMATE.start_main_~y~4)) (.cse29 (<= ULTIMATE.start_main_~y~4 17)) (.cse5 (<= 29 ULTIMATE.start_main_~y~4)) (.cse4 (<= ULTIMATE.start_main_~y~4 29)) (.cse82 (<= 35 ULTIMATE.start_main_~y~4)) (.cse83 (<= ULTIMATE.start_main_~y~4 35)) (.cse96 (<= ULTIMATE.start_main_~y~4 26)) (.cse97 (<= 26 ULTIMATE.start_main_~y~4)) (.cse47 (<= ULTIMATE.start_main_~y~4 21)) (.cse46 (<= 21 ULTIMATE.start_main_~y~4)) (.cse84 (<= 32 ULTIMATE.start_main_~y~4)) (.cse85 (<= ULTIMATE.start_main_~y~4 32)) (.cse92 (<= ULTIMATE.start_main_~y~4 3)) (.cse93 (<= 3 ULTIMATE.start_main_~y~4)) (.cse0 (<= ULTIMATE.start_main_~y~4 41)) (.cse1 (<= 41 ULTIMATE.start_main_~y~4)) (.cse68 (<= 12 ULTIMATE.start_main_~y~4)) (.cse69 (<= ULTIMATE.start_main_~y~4 12)) (.cse14 (<= 18 ULTIMATE.start_main_~y~4)) (.cse15 (<= ULTIMATE.start_main_~y~4 18)) (.cse9 (<= ULTIMATE.start_main_~y~4 40)) (.cse8 (<= 40 ULTIMATE.start_main_~y~4)) (.cse6 (<= 39 ULTIMATE.start_main_~y~4)) (.cse7 (<= ULTIMATE.start_main_~y~4 39)) (.cse91 (<= ULTIMATE.start_main_~y~4 36)) (.cse90 (<= 36 ULTIMATE.start_main_~y~4)) (.cse88 (<= 48 ULTIMATE.start_main_~y~4)) (.cse89 (<= ULTIMATE.start_main_~y~4 48))) (or (and .cse0 (<= 58 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 58) .cse1) (and (<= ULTIMATE.start_main_~x~4 27) .cse2 (<= 27 ULTIMATE.start_main_~x~4) .cse3) (and (<= ULTIMATE.start_main_~x~4 28) .cse4 .cse5 (<= 28 ULTIMATE.start_main_~x~4)) (and (<= 38 ULTIMATE.start_main_~x~4) .cse6 (<= ULTIMATE.start_main_~x~4 38) .cse7) (and (<= ULTIMATE.start_main_~x~4 59) .cse8 .cse9 (<= 59 ULTIMATE.start_main_~x~4)) (and (<= 66 ULTIMATE.start_main_~x~4) .cse10 (<= ULTIMATE.start_main_~x~4 66) .cse11) (and (<= ULTIMATE.start_main_~x~4 77) .cse12 .cse13 (<= 77 ULTIMATE.start_main_~x~4)) (and .cse14 (<= ULTIMATE.start_main_~x~4 81) (<= 81 ULTIMATE.start_main_~x~4) .cse15) (and .cse16 (<= ULTIMATE.start_main_~x~4 42) .cse17 (<= 42 ULTIMATE.start_main_~x~4)) (and (<= ULTIMATE.start_main_~x~4 91) (<= 91 ULTIMATE.start_main_~x~4) .cse18 .cse19) (and .cse20 (<= ULTIMATE.start_main_~x~4 89) (<= 89 ULTIMATE.start_main_~x~4) .cse21) (and (<= ULTIMATE.start_main_~x~4 76) .cse22 .cse23 (<= 76 ULTIMATE.start_main_~x~4)) (and (<= 88 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 88) .cse24 .cse25) (and (<= 79 ULTIMATE.start_main_~x~4) .cse26 (<= ULTIMATE.start_main_~x~4 79) .cse27) (and (<= ULTIMATE.start_main_~x~4 82) (<= 82 ULTIMATE.start_main_~x~4) .cse28 .cse29) (and .cse30 .cse31 (<= 65 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 65)) (and (<= ULTIMATE.start_main_~x~4 33) (<= 33 ULTIMATE.start_main_~x~4) .cse30 .cse31) (and .cse32 (<= ULTIMATE.start_main_~x~4 80) .cse33 (<= 80 ULTIMATE.start_main_~x~4)) (and (<= 44 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 44) .cse34 .cse35) (and (<= ULTIMATE.start_main_~x~4 54) (<= 54 ULTIMATE.start_main_~x~4) .cse35 .cse34) (and .cse36 .cse37 (<= ULTIMATE.start_main_~x~4 4) (<= 4 ULTIMATE.start_main_~x~4)) (and (<= 18 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 18) .cse32 .cse33) (and (<= 12 ULTIMATE.start_main_~x~4) .cse38 .cse39 (<= ULTIMATE.start_main_~x~4 12)) (and .cse40 (<= 72 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 72) .cse41) (and (<= ULTIMATE.start_main_~x~4 90) .cse42 (<= 90 ULTIMATE.start_main_~x~4) .cse43) (and .cse42 (<= ULTIMATE.start_main_~x~4 8) (<= 8 ULTIMATE.start_main_~x~4) .cse43) (and .cse44 (<= ULTIMATE.start_main_~x~4 24) .cse45 (<= 24 ULTIMATE.start_main_~x~4)) (and .cse36 .cse37 (<= ULTIMATE.start_main_~x~4 94) (<= 94 ULTIMATE.start_main_~x~4)) (and (<= 20 ULTIMATE.start_main_~x~4) .cse46 (<= ULTIMATE.start_main_~x~4 20) .cse47) (and (<= ULTIMATE.start_main_~y~4 0) (<= 0 ULTIMATE.start_main_~y~4) (<= 99 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 99)) (and (<= ULTIMATE.start_main_~x~4 75) (<= 75 ULTIMATE.start_main_~x~4) .cse48 .cse49) (and .cse50 (<= 55 ULTIMATE.start_main_~x~4) .cse51 (<= ULTIMATE.start_main_~x~4 55)) (and .cse52 (<= 95 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 95) .cse53) (and (<= ULTIMATE.start_main_~x~4 5) .cse54 .cse55 (<= 5 ULTIMATE.start_main_~x~4)) (and (<= 15 ULTIMATE.start_main_~x~4) .cse56 .cse57 (<= ULTIMATE.start_main_~x~4 15)) (and .cse58 (<= ULTIMATE.start_main_~x~4 84) (<= 84 ULTIMATE.start_main_~x~4) .cse59) (and (<= 71 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 71) .cse3 .cse2) (and .cse60 .cse61 (<= 69 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 69)) (and (<= ULTIMATE.start_main_~x~4 41) (<= 41 ULTIMATE.start_main_~x~4) .cse62 .cse63) (and (<= 3 ULTIMATE.start_main_~x~4) .cse52 (<= ULTIMATE.start_main_~x~4 3) .cse53) (and .cse64 .cse65 (<= 45 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 45)) (and (<= ULTIMATE.start_main_~x~4 32) .cse10 (<= 32 ULTIMATE.start_main_~x~4) .cse11) (and (<= ULTIMATE.start_main_~x~4 62) .cse66 .cse67 (<= 62 ULTIMATE.start_main_~x~4)) (and .cse22 .cse23 (<= ULTIMATE.start_main_~x~4 22) (<= 22 ULTIMATE.start_main_~x~4)) (and .cse68 (<= ULTIMATE.start_main_~x~4 87) .cse69 (<= 87 ULTIMATE.start_main_~x~4)) (and (<= ULTIMATE.start_main_~x~4 10) .cse24 .cse25 (<= 10 ULTIMATE.start_main_~x~4)) (and .cse26 (<= 19 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 19) .cse27) (and .cse38 .cse39 (<= 86 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 86)) (and (<= ULTIMATE.start_main_~x~4 30) .cse70 (<= 30 ULTIMATE.start_main_~x~4) .cse71) (and (<= 61 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 61) .cse72 .cse73) (and .cse74 (<= 97 ULTIMATE.start_main_~x~4) .cse75 (<= ULTIMATE.start_main_~x~4 97)) (and .cse76 .cse77 (<= 85 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 85)) (and .cse78 (<= ULTIMATE.start_main_~x~4 92) .cse79 (<= 92 ULTIMATE.start_main_~x~4)) (and (<= 36 ULTIMATE.start_main_~x~4) .cse67 .cse66 (<= ULTIMATE.start_main_~x~4 36)) (and (<= ULTIMATE.start_main_~x~4 50) (<= 50 ULTIMATE.start_main_~x~4) .cse80 .cse81) (and .cse63 .cse62 (<= 57 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 57)) (and (<= ULTIMATE.start_main_~x~4 37) .cse72 .cse73 (<= 37 ULTIMATE.start_main_~x~4)) (and .cse82 (<= ULTIMATE.start_main_~x~4 64) (<= 64 ULTIMATE.start_main_~x~4) .cse83) (and (<= ULTIMATE.start_main_~x~4 31) .cse84 (<= 31 ULTIMATE.start_main_~x~4) .cse85) (and (<= ULTIMATE.start_main_~y~4 50) (<= 49 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 49) (<= 50 ULTIMATE.start_main_~y~4)) (and (<= ULTIMATE.start_main_~x~4 43) .cse50 .cse51 (<= 43 ULTIMATE.start_main_~x~4)) (and .cse65 (<= 53 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 53) .cse64) (and .cse60 (<= 29 ULTIMATE.start_main_~x~4) .cse61 (<= ULTIMATE.start_main_~x~4 29)) (and .cse78 (<= 6 ULTIMATE.start_main_~x~4) .cse79 (<= ULTIMATE.start_main_~x~4 6)) (and (<= ULTIMATE.start_main_~x~4 21) .cse13 (<= 21 ULTIMATE.start_main_~x~4) .cse12) (and (<= ULTIMATE.start_main_~x~4 0) (<= 0 ULTIMATE.start_main_~x~4) .cse86 .cse87) (and .cse20 (<= 9 ULTIMATE.start_main_~x~4) .cse21 (<= ULTIMATE.start_main_~x~4 9)) (and (<= ULTIMATE.start_main_~x~4 7) (<= 7 ULTIMATE.start_main_~x~4) .cse18 .cse19) (and .cse40 (<= ULTIMATE.start_main_~x~4 26) .cse41 (<= 26 ULTIMATE.start_main_~x~4)) (and (<= 51 ULTIMATE.start_main_~x~4) .cse88 .cse89 (<= ULTIMATE.start_main_~x~4 51)) (and (<= ULTIMATE.start_main_~x~4 23) (<= 23 ULTIMATE.start_main_~x~4) .cse48 .cse49) (and (<= 48 ULTIMATE.start_main_~x~4) .cse81 .cse80 (<= ULTIMATE.start_main_~x~4 48)) (and .cse44 (<= 74 ULTIMATE.start_main_~x~4) .cse45 (<= ULTIMATE.start_main_~x~4 74)) (and (<= (+ ULTIMATE.start_main_~y~4 1) 0) (<= ULTIMATE.start_main_~x~4 100) (<= 100 ULTIMATE.start_main_~x~4)) (and (<= 63 ULTIMATE.start_main_~x~4) .cse90 .cse91 (<= ULTIMATE.start_main_~x~4 63)) (and (<= ULTIMATE.start_main_~x~4 98) (<= 98 ULTIMATE.start_main_~x~4) .cse86 .cse87) (and .cse54 .cse55 (<= ULTIMATE.start_main_~x~4 93) (<= 93 ULTIMATE.start_main_~x~4)) (and .cse92 .cse93 (<= 2 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 2)) (and (<= ULTIMATE.start_main_~x~4 46) .cse94 (<= 46 ULTIMATE.start_main_~x~4) .cse95) (and (<= 83 ULTIMATE.start_main_~x~4) .cse56 .cse57 (<= ULTIMATE.start_main_~x~4 83)) (and (<= 56 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 56) .cse17 .cse16) (and .cse70 (<= ULTIMATE.start_main_~x~4 68) (<= 68 ULTIMATE.start_main_~x~4) .cse71) (and .cse58 (<= 14 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 14) .cse59) (and .cse76 (<= ULTIMATE.start_main_~x~4 13) (<= 13 ULTIMATE.start_main_~x~4) .cse77) (and .cse74 .cse75 (<= ULTIMATE.start_main_~x~4 1) (<= 1 ULTIMATE.start_main_~x~4)) (and .cse96 .cse97 (<= ULTIMATE.start_main_~x~4 73) (<= 73 ULTIMATE.start_main_~x~4)) (and (<= ULTIMATE.start_main_~x~4 52) (<= 52 ULTIMATE.start_main_~x~4) .cse94 .cse95) (and (<= ULTIMATE.start_main_~x~4 16) (<= 16 ULTIMATE.start_main_~x~4) .cse28 .cse29) (and (<= ULTIMATE.start_main_~x~4 70) (<= 70 ULTIMATE.start_main_~x~4) .cse5 .cse4) (and (<= 34 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 34) .cse82 .cse83) (and .cse96 (<= ULTIMATE.start_main_~x~4 25) .cse97 (<= 25 ULTIMATE.start_main_~x~4)) (and (<= ULTIMATE.start_main_~x~4 78) (<= 78 ULTIMATE.start_main_~x~4) .cse47 .cse46) (and (<= 67 ULTIMATE.start_main_~x~4) .cse84 .cse85 (<= ULTIMATE.start_main_~x~4 67)) (and .cse92 .cse93 (<= ULTIMATE.start_main_~x~4 96) (<= 96 ULTIMATE.start_main_~x~4)) (and (<= ULTIMATE.start_main_~x~4 40) .cse0 (<= 40 ULTIMATE.start_main_~x~4) .cse1) (and (<= ULTIMATE.start_main_~x~4 11) (<= 11 ULTIMATE.start_main_~x~4) .cse68 .cse69) (and .cse14 (<= ULTIMATE.start_main_~x~4 17) .cse15 (<= 17 ULTIMATE.start_main_~x~4)) (and (<= ULTIMATE.start_main_~x~4 39) .cse9 (<= 39 ULTIMATE.start_main_~x~4) .cse8) (and .cse6 .cse7 (<= 60 ULTIMATE.start_main_~x~4) (<= ULTIMATE.start_main_~x~4 60)) (and (<= ULTIMATE.start_main_~x~4 35) (<= 35 ULTIMATE.start_main_~x~4) .cse91 .cse90) (and .cse88 (<= 47 ULTIMATE.start_main_~x~4) .cse89 (<= ULTIMATE.start_main_~x~4 47)))) [2018-09-23 19:37:33,470 INFO L202 PluginConnector]: Adding new model gr2006.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.09 07:37:33 BoogieIcfgContainer [2018-09-23 19:37:33,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-23 19:37:33,471 INFO L168 Benchmark]: Toolchain (without parser) took 123850.93 ms. Allocated memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: 1.2 GB). Free memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: -96.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-09-23 19:37:33,472 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-23 19:37:33,472 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-23 19:37:33,473 INFO L168 Benchmark]: Boogie Preprocessor took 25.37 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-23 19:37:33,473 INFO L168 Benchmark]: RCFGBuilder took 350.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-23 19:37:33,474 INFO L168 Benchmark]: TraceAbstraction took 123428.36 ms. Allocated memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: 1.2 GB). Free memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: -117.6 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-09-23 19:37:33,477 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 0.20 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 40.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.37 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 350.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 123428.36 ms. Allocated memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: 1.2 GB). Free memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: -117.6 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 54]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((24 <= main_~y~4 && main_~x~4 <= 24) && 24 <= main_~x~4) && main_~y~4 <= 24) || (((4 <= main_~y~4 && main_~x~4 <= 96) && 96 <= main_~x~4) && main_~y~4 <= 4)) || (((main_~x~4 <= 31 && 31 <= main_~y~4) && main_~y~4 <= 31) && 31 <= main_~x~4)) || (((18 <= main_~y~4 && 18 <= main_~x~4) && main_~x~4 <= 18) && main_~y~4 <= 18)) || (((main_~x~4 <= 46 && 46 <= main_~x~4) && main_~y~4 <= 46) && 46 <= main_~y~4)) || (((main_~y~4 <= 2 && 2 <= main_~y~4) && 2 <= main_~x~4) && main_~x~4 <= 2)) || (((58 <= main_~x~4 && 42 <= main_~y~4) && main_~y~4 <= 42) && main_~x~4 <= 58)) || (((67 <= main_~x~4 && 33 <= main_~y~4) && main_~y~4 <= 33) && main_~x~4 <= 67)) || (((19 <= main_~y~4 && 19 <= main_~x~4) && main_~y~4 <= 19) && main_~x~4 <= 19)) || (((main_~x~4 <= 5 && 5 <= main_~y~4) && main_~y~4 <= 5) && 5 <= main_~x~4)) || (((40 <= main_~y~4 && 60 <= main_~x~4) && main_~y~4 <= 40) && main_~x~4 <= 60)) || (((21 <= main_~y~4 && 79 <= main_~x~4) && main_~x~4 <= 79) && main_~y~4 <= 21)) || (((main_~x~4 <= 59 && main_~y~4 <= 41) && 41 <= main_~y~4) && 59 <= main_~x~4)) || (((main_~x~4 <= 54 && 46 <= main_~y~4) && main_~y~4 <= 46) && 54 <= main_~x~4)) || (((main_~x~4 <= 68 && 68 <= main_~x~4) && 32 <= main_~y~4) && main_~y~4 <= 32)) || (((71 <= main_~x~4 && main_~x~4 <= 71) && main_~y~4 <= 29) && 29 <= main_~y~4)) || (((2 <= main_~y~4 && main_~x~4 <= 98) && main_~y~4 <= 2) && 98 <= main_~x~4)) || (((main_~y~4 <= 10 && main_~x~4 <= 90) && 90 <= main_~x~4) && 10 <= main_~y~4)) || (((44 <= main_~x~4 && main_~x~4 <= 44) && main_~y~4 <= 44) && 44 <= main_~y~4)) || (((45 <= main_~y~4 && 45 <= main_~x~4) && main_~y~4 <= 45) && main_~x~4 <= 45)) || (((48 <= main_~x~4 && 48 <= main_~y~4) && main_~y~4 <= 48) && main_~x~4 <= 48)) || (((14 <= main_~y~4 && 14 <= main_~x~4) && main_~x~4 <= 14) && main_~y~4 <= 14)) || (((main_~y~4 <= 9 && 9 <= main_~x~4) && main_~x~4 <= 9) && 9 <= main_~y~4)) || (((12 <= main_~x~4 && 12 <= main_~y~4) && main_~y~4 <= 12) && main_~x~4 <= 12)) || (((39 <= main_~y~4 && main_~x~4 <= 39) && main_~y~4 <= 39) && 39 <= main_~x~4)) || (((43 <= main_~y~4 && 57 <= main_~x~4) && main_~x~4 <= 57) && main_~y~4 <= 43)) || (((main_~y~4 <= 7 && 7 <= main_~y~4) && main_~x~4 <= 93) && 93 <= main_~x~4)) || (((main_~x~4 <= 21 && 21 <= main_~y~4) && 21 <= main_~x~4) && main_~y~4 <= 21)) || (((56 <= main_~x~4 && main_~x~4 <= 56) && main_~y~4 <= 44) && 44 <= main_~y~4)) || (((main_~y~4 <= 22 && main_~x~4 <= 78) && 78 <= main_~x~4) && 22 <= main_~y~4)) || (((main_~y~4 <= 42 && 42 <= main_~y~4) && main_~x~4 <= 42) && 42 <= main_~x~4)) || (((53 <= main_~x~4 && main_~x~4 <= 53) && 47 <= main_~y~4) && main_~y~4 <= 47)) || (((main_~x~4 <= 50 && main_~y~4 <= 50) && 50 <= main_~x~4) && 50 <= main_~y~4)) || (((34 <= main_~x~4 && main_~x~4 <= 34) && main_~y~4 <= 34) && 34 <= main_~y~4)) || (((37 <= main_~y~4 && main_~x~4 <= 37) && main_~y~4 <= 37) && 37 <= main_~x~4)) || (((88 <= main_~x~4 && main_~x~4 <= 88) && main_~y~4 <= 12) && 12 <= main_~y~4)) || (((main_~y~4 <= 27 && main_~x~4 <= 27) && 27 <= main_~y~4) && 27 <= main_~x~4)) || (((main_~y~4 <= 22 && main_~x~4 <= 22) && 22 <= main_~x~4) && 22 <= main_~y~4)) || (((main_~y~4 <= 30 && main_~x~4 <= 70) && 70 <= main_~x~4) && 30 <= main_~y~4)) || (((29 <= main_~x~4 && main_~y~4 <= 29) && 29 <= main_~y~4) && main_~x~4 <= 29)) || (((16 <= main_~y~4 && main_~x~4 <= 84) && main_~y~4 <= 16) && 84 <= main_~x~4)) || (((main_~x~4 <= 80 && 20 <= main_~y~4) && 80 <= main_~x~4) && main_~y~4 <= 20)) || (((main_~x~4 <= 64 && main_~y~4 <= 36) && 64 <= main_~x~4) && 36 <= main_~y~4)) || (((main_~x~4 <= 35 && 35 <= main_~y~4) && 35 <= main_~x~4) && main_~y~4 <= 35)) || (((main_~x~4 <= 16 && 16 <= main_~x~4) && 16 <= main_~y~4) && main_~y~4 <= 16)) || (((main_~y~4 <= 30 && main_~x~4 <= 30) && 30 <= main_~y~4) && 30 <= main_~x~4)) || (((main_~x~4 <= 75 && 75 <= main_~x~4) && main_~y~4 <= 25) && 25 <= main_~y~4)) || (((main_~x~4 <= 8 && 8 <= main_~y~4) && main_~y~4 <= 8) && 8 <= main_~x~4)) || (((38 <= main_~y~4 && main_~x~4 <= 62) && main_~y~4 <= 38) && 62 <= main_~x~4)) || (((main_~y~4 <= 0 && 0 <= main_~y~4) && main_~x~4 <= 100) && 100 <= main_~x~4)) || (((4 <= main_~y~4 && main_~x~4 <= 4) && 4 <= main_~x~4) && main_~y~4 <= 4)) || (((main_~x~4 <= 17 && 17 <= main_~y~4) && main_~y~4 <= 17) && 17 <= main_~x~4)) || (((main_~x~4 <= 82 && 82 <= main_~x~4) && main_~y~4 <= 18) && 18 <= main_~y~4)) || (((55 <= main_~x~4 && 45 <= main_~y~4) && main_~x~4 <= 55) && main_~y~4 <= 45)) || (((6 <= main_~y~4 && main_~y~4 <= 6) && main_~x~4 <= 94) && 94 <= main_~x~4)) || (((35 <= main_~y~4 && main_~y~4 <= 35) && 65 <= main_~x~4) && main_~x~4 <= 65)) || (((31 <= main_~y~4 && 69 <= main_~x~4) && main_~x~4 <= 69) && main_~y~4 <= 31)) || (((3 <= main_~x~4 && main_~y~4 <= 3) && 3 <= main_~y~4) && main_~x~4 <= 3)) || (((main_~y~4 <= 13 && main_~x~4 <= 87) && 13 <= main_~y~4) && 87 <= main_~x~4)) || (((38 <= main_~x~4 && main_~x~4 <= 38) && main_~y~4 <= 38) && 38 <= main_~y~4)) || (((main_~y~4 <= 13 && 13 <= main_~y~4) && main_~x~4 <= 13) && 13 <= main_~x~4)) || (((main_~x~4 <= 23 && 23 <= main_~x~4) && main_~y~4 <= 23) && 23 <= main_~y~4)) || (((main_~x~4 <= 52 && 52 <= main_~x~4) && 48 <= main_~y~4) && main_~y~4 <= 48)) || (((main_~x~4 <= 11 && 11 <= main_~x~4) && main_~y~4 <= 11) && 11 <= main_~y~4)) || (((main_~x~4 <= 32 && 32 <= main_~y~4) && 32 <= main_~x~4) && main_~y~4 <= 32)) || (((19 <= main_~y~4 && main_~x~4 <= 81) && 81 <= main_~x~4) && main_~y~4 <= 19)) || (((43 <= main_~y~4 && main_~x~4 <= 43) && 43 <= main_~x~4) && main_~y~4 <= 43)) || (((28 <= main_~y~4 && 72 <= main_~x~4) && main_~y~4 <= 28) && main_~x~4 <= 72)) || (((6 <= main_~x~4 && 6 <= main_~y~4) && main_~y~4 <= 6) && main_~x~4 <= 6)) || (((5 <= main_~y~4 && main_~y~4 <= 5) && 95 <= main_~x~4) && main_~x~4 <= 95)) || (((66 <= main_~x~4 && 34 <= main_~y~4) && main_~x~4 <= 66) && main_~y~4 <= 34)) || (((main_~y~4 <= 15 && 15 <= main_~y~4) && 85 <= main_~x~4) && main_~x~4 <= 85)) || (((main_~y~4 <= 0 && 0 <= main_~y~4) && main_~x~4 <= 0) && 0 <= main_~x~4)) || (((3 <= main_~y~4 && main_~y~4 <= 3) && 97 <= main_~x~4) && main_~x~4 <= 97)) || (((36 <= main_~x~4 && main_~y~4 <= 36) && main_~x~4 <= 36) && 36 <= main_~y~4)) || (((25 <= main_~y~4 && main_~y~4 <= 25) && main_~x~4 <= 25) && 25 <= main_~x~4)) || (((main_~x~4 <= 77 && 23 <= main_~y~4) && 77 <= main_~x~4) && main_~y~4 <= 23)) || (((63 <= main_~x~4 && main_~y~4 <= 37) && 37 <= main_~y~4) && main_~x~4 <= 63)) || (((main_~y~4 <= 15 && 15 <= main_~x~4) && 15 <= main_~y~4) && main_~x~4 <= 15)) || (((51 <= main_~x~4 && 49 <= main_~y~4) && main_~y~4 <= 49) && main_~x~4 <= 51)) || (((main_~x~4 <= 40 && main_~y~4 <= 40) && 40 <= main_~x~4) && 40 <= main_~y~4)) || (((99 <= main_~x~4 && main_~x~4 <= 99) && main_~y~4 <= 1) && 1 <= main_~y~4)) || (((main_~y~4 <= 27 && main_~x~4 <= 73) && 27 <= main_~y~4) && 73 <= main_~x~4)) || (((main_~x~4 <= 92 && 8 <= main_~y~4) && main_~y~4 <= 8) && 92 <= main_~x~4)) || (((47 <= main_~y~4 && 47 <= main_~x~4) && main_~x~4 <= 47) && main_~y~4 <= 47)) || (((main_~x~4 <= 7 && main_~y~4 <= 7) && 7 <= main_~y~4) && 7 <= main_~x~4)) || (((86 <= main_~x~4 && 14 <= main_~y~4) && main_~y~4 <= 14) && main_~x~4 <= 86)) || (((61 <= main_~x~4 && main_~x~4 <= 61) && main_~y~4 <= 39) && 39 <= main_~y~4)) || (((83 <= main_~x~4 && 17 <= main_~y~4) && main_~y~4 <= 17) && main_~x~4 <= 83)) || (((main_~y~4 <= 10 && main_~x~4 <= 10) && 10 <= main_~y~4) && 10 <= main_~x~4)) || (((main_~x~4 <= 26 && main_~y~4 <= 26) && 26 <= main_~y~4) && 26 <= main_~x~4)) || (((main_~x~4 <= 76 && main_~y~4 <= 24) && 76 <= main_~x~4) && 24 <= main_~y~4)) || (((49 <= main_~x~4 && 49 <= main_~y~4) && main_~y~4 <= 49) && main_~x~4 <= 49)) || (((main_~y~4 <= 28 && main_~x~4 <= 28) && 28 <= main_~y~4) && 28 <= main_~x~4)) || (((26 <= main_~y~4 && 74 <= main_~x~4) && main_~y~4 <= 26) && main_~x~4 <= 74)) || (((main_~x~4 <= 91 && main_~y~4 <= 9) && 9 <= main_~y~4) && 91 <= main_~x~4)) || (((main_~x~4 <= 33 && 33 <= main_~y~4) && 33 <= main_~x~4) && main_~y~4 <= 33)) || (((main_~x~4 <= 1 && main_~y~4 <= 1) && 1 <= main_~y~4) && 1 <= main_~x~4)) || (((20 <= main_~x~4 && 20 <= main_~y~4) && main_~x~4 <= 20) && main_~y~4 <= 20)) || (((main_~x~4 <= 41 && 41 <= main_~x~4) && main_~y~4 <= 41) && 41 <= main_~y~4)) || (((main_~x~4 <= 89 && 89 <= main_~x~4) && 11 <= main_~y~4) && main_~y~4 <= 11) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((main_~y~4 <= 41 && 58 <= main_~x~4) && main_~x~4 <= 58) && 41 <= main_~y~4) || (((main_~x~4 <= 27 && main_~y~4 <= 28) && 27 <= main_~x~4) && 28 <= main_~y~4)) || (((main_~x~4 <= 28 && main_~y~4 <= 29) && 29 <= main_~y~4) && 28 <= main_~x~4)) || (((38 <= main_~x~4 && 39 <= main_~y~4) && main_~x~4 <= 38) && main_~y~4 <= 39)) || (((main_~x~4 <= 59 && 40 <= main_~y~4) && main_~y~4 <= 40) && 59 <= main_~x~4)) || (((66 <= main_~x~4 && 33 <= main_~y~4) && main_~x~4 <= 66) && main_~y~4 <= 33)) || (((main_~x~4 <= 77 && 22 <= main_~y~4) && main_~y~4 <= 22) && 77 <= main_~x~4)) || (((18 <= main_~y~4 && main_~x~4 <= 81) && 81 <= main_~x~4) && main_~y~4 <= 18)) || (((43 <= main_~y~4 && main_~x~4 <= 42) && main_~y~4 <= 43) && 42 <= main_~x~4)) || (((main_~x~4 <= 91 && 91 <= main_~x~4) && 8 <= main_~y~4) && main_~y~4 <= 8)) || (((main_~y~4 <= 10 && main_~x~4 <= 89) && 89 <= main_~x~4) && 10 <= main_~y~4)) || (((main_~x~4 <= 76 && main_~y~4 <= 23) && 23 <= main_~y~4) && 76 <= main_~x~4)) || (((88 <= main_~x~4 && main_~x~4 <= 88) && main_~y~4 <= 11) && 11 <= main_~y~4)) || (((79 <= main_~x~4 && 20 <= main_~y~4) && main_~x~4 <= 79) && main_~y~4 <= 20)) || (((main_~x~4 <= 82 && 82 <= main_~x~4) && 17 <= main_~y~4) && main_~y~4 <= 17)) || (((main_~y~4 <= 34 && 34 <= main_~y~4) && 65 <= main_~x~4) && main_~x~4 <= 65)) || (((main_~x~4 <= 33 && 33 <= main_~x~4) && main_~y~4 <= 34) && 34 <= main_~y~4)) || (((19 <= main_~y~4 && main_~x~4 <= 80) && main_~y~4 <= 19) && 80 <= main_~x~4)) || (((44 <= main_~x~4 && main_~x~4 <= 44) && 45 <= main_~y~4) && main_~y~4 <= 45)) || (((main_~x~4 <= 54 && 54 <= main_~x~4) && main_~y~4 <= 45) && 45 <= main_~y~4)) || (((5 <= main_~y~4 && main_~y~4 <= 5) && main_~x~4 <= 4) && 4 <= main_~x~4)) || (((18 <= main_~x~4 && main_~x~4 <= 18) && 19 <= main_~y~4) && main_~y~4 <= 19)) || (((12 <= main_~x~4 && main_~y~4 <= 13) && 13 <= main_~y~4) && main_~x~4 <= 12)) || (((main_~y~4 <= 27 && 72 <= main_~x~4) && main_~x~4 <= 72) && 27 <= main_~y~4)) || (((main_~x~4 <= 90 && main_~y~4 <= 9) && 90 <= main_~x~4) && 9 <= main_~y~4)) || (((main_~y~4 <= 9 && main_~x~4 <= 8) && 8 <= main_~x~4) && 9 <= main_~y~4)) || (((25 <= main_~y~4 && main_~x~4 <= 24) && main_~y~4 <= 25) && 24 <= main_~x~4)) || (((5 <= main_~y~4 && main_~y~4 <= 5) && main_~x~4 <= 94) && 94 <= main_~x~4)) || (((20 <= main_~x~4 && 21 <= main_~y~4) && main_~x~4 <= 20) && main_~y~4 <= 21)) || (((main_~y~4 <= 0 && 0 <= main_~y~4) && 99 <= main_~x~4) && main_~x~4 <= 99)) || (((main_~x~4 <= 75 && 75 <= main_~x~4) && 24 <= main_~y~4) && main_~y~4 <= 24)) || (((main_~y~4 <= 44 && 55 <= main_~x~4) && 44 <= main_~y~4) && main_~x~4 <= 55)) || (((4 <= main_~y~4 && 95 <= main_~x~4) && main_~x~4 <= 95) && main_~y~4 <= 4)) || (((main_~x~4 <= 5 && 6 <= main_~y~4) && main_~y~4 <= 6) && 5 <= main_~x~4)) || (((15 <= main_~x~4 && 16 <= main_~y~4) && main_~y~4 <= 16) && main_~x~4 <= 15)) || (((main_~y~4 <= 15 && main_~x~4 <= 84) && 84 <= main_~x~4) && 15 <= main_~y~4)) || (((71 <= main_~x~4 && main_~x~4 <= 71) && 28 <= main_~y~4) && main_~y~4 <= 28)) || (((main_~y~4 <= 30 && 30 <= main_~y~4) && 69 <= main_~x~4) && main_~x~4 <= 69)) || (((main_~x~4 <= 41 && 41 <= main_~x~4) && main_~y~4 <= 42) && 42 <= main_~y~4)) || (((3 <= main_~x~4 && 4 <= main_~y~4) && main_~x~4 <= 3) && main_~y~4 <= 4)) || (((main_~y~4 <= 46 && 46 <= main_~y~4) && 45 <= main_~x~4) && main_~x~4 <= 45)) || (((main_~x~4 <= 32 && 33 <= main_~y~4) && 32 <= main_~x~4) && main_~y~4 <= 33)) || (((main_~x~4 <= 62 && main_~y~4 <= 37) && 37 <= main_~y~4) && 62 <= main_~x~4)) || (((main_~y~4 <= 23 && 23 <= main_~y~4) && main_~x~4 <= 22) && 22 <= main_~x~4)) || (((12 <= main_~y~4 && main_~x~4 <= 87) && main_~y~4 <= 12) && 87 <= main_~x~4)) || (((main_~x~4 <= 10 && main_~y~4 <= 11) && 11 <= main_~y~4) && 10 <= main_~x~4)) || (((20 <= main_~y~4 && 19 <= main_~x~4) && main_~x~4 <= 19) && main_~y~4 <= 20)) || (((main_~y~4 <= 13 && 13 <= main_~y~4) && 86 <= main_~x~4) && main_~x~4 <= 86)) || (((main_~x~4 <= 30 && 31 <= main_~y~4) && 30 <= main_~x~4) && main_~y~4 <= 31)) || (((61 <= main_~x~4 && main_~x~4 <= 61) && main_~y~4 <= 38) && 38 <= main_~y~4)) || (((main_~y~4 <= 2 && 97 <= main_~x~4) && 2 <= main_~y~4) && main_~x~4 <= 97)) || (((14 <= main_~y~4 && main_~y~4 <= 14) && 85 <= main_~x~4) && main_~x~4 <= 85)) || (((main_~y~4 <= 7 && main_~x~4 <= 92) && 7 <= main_~y~4) && 92 <= main_~x~4)) || (((36 <= main_~x~4 && 37 <= main_~y~4) && main_~y~4 <= 37) && main_~x~4 <= 36)) || (((main_~x~4 <= 50 && 50 <= main_~x~4) && main_~y~4 <= 49) && 49 <= main_~y~4)) || (((42 <= main_~y~4 && main_~y~4 <= 42) && 57 <= main_~x~4) && main_~x~4 <= 57)) || (((main_~x~4 <= 37 && main_~y~4 <= 38) && 38 <= main_~y~4) && 37 <= main_~x~4)) || (((35 <= main_~y~4 && main_~x~4 <= 64) && 64 <= main_~x~4) && main_~y~4 <= 35)) || (((main_~x~4 <= 31 && 32 <= main_~y~4) && 31 <= main_~x~4) && main_~y~4 <= 32)) || (((main_~y~4 <= 50 && 49 <= main_~x~4) && main_~x~4 <= 49) && 50 <= main_~y~4)) || (((main_~x~4 <= 43 && main_~y~4 <= 44) && 44 <= main_~y~4) && 43 <= main_~x~4)) || (((46 <= main_~y~4 && 53 <= main_~x~4) && main_~x~4 <= 53) && main_~y~4 <= 46)) || (((main_~y~4 <= 30 && 29 <= main_~x~4) && 30 <= main_~y~4) && main_~x~4 <= 29)) || (((main_~y~4 <= 7 && 6 <= main_~x~4) && 7 <= main_~y~4) && main_~x~4 <= 6)) || (((main_~x~4 <= 21 && main_~y~4 <= 22) && 21 <= main_~x~4) && 22 <= main_~y~4)) || (((main_~x~4 <= 0 && 0 <= main_~x~4) && main_~y~4 <= 1) && 1 <= main_~y~4)) || (((main_~y~4 <= 10 && 9 <= main_~x~4) && 10 <= main_~y~4) && main_~x~4 <= 9)) || (((main_~x~4 <= 7 && 7 <= main_~x~4) && 8 <= main_~y~4) && main_~y~4 <= 8)) || (((main_~y~4 <= 27 && main_~x~4 <= 26) && 27 <= main_~y~4) && 26 <= main_~x~4)) || (((51 <= main_~x~4 && 48 <= main_~y~4) && main_~y~4 <= 48) && main_~x~4 <= 51)) || (((main_~x~4 <= 23 && 23 <= main_~x~4) && 24 <= main_~y~4) && main_~y~4 <= 24)) || (((48 <= main_~x~4 && 49 <= main_~y~4) && main_~y~4 <= 49) && main_~x~4 <= 48)) || (((25 <= main_~y~4 && 74 <= main_~x~4) && main_~y~4 <= 25) && main_~x~4 <= 74)) || ((main_~y~4 + 1 <= 0 && main_~x~4 <= 100) && 100 <= main_~x~4)) || (((63 <= main_~x~4 && 36 <= main_~y~4) && main_~y~4 <= 36) && main_~x~4 <= 63)) || (((main_~x~4 <= 98 && 98 <= main_~x~4) && main_~y~4 <= 1) && 1 <= main_~y~4)) || (((6 <= main_~y~4 && main_~y~4 <= 6) && main_~x~4 <= 93) && 93 <= main_~x~4)) || (((main_~y~4 <= 3 && 3 <= main_~y~4) && 2 <= main_~x~4) && main_~x~4 <= 2)) || (((main_~x~4 <= 46 && 47 <= main_~y~4) && 46 <= main_~x~4) && main_~y~4 <= 47)) || (((83 <= main_~x~4 && 16 <= main_~y~4) && main_~y~4 <= 16) && main_~x~4 <= 83)) || (((56 <= main_~x~4 && main_~x~4 <= 56) && main_~y~4 <= 43) && 43 <= main_~y~4)) || (((31 <= main_~y~4 && main_~x~4 <= 68) && 68 <= main_~x~4) && main_~y~4 <= 31)) || (((main_~y~4 <= 15 && 14 <= main_~x~4) && main_~x~4 <= 14) && 15 <= main_~y~4)) || (((14 <= main_~y~4 && main_~x~4 <= 13) && 13 <= main_~x~4) && main_~y~4 <= 14)) || (((main_~y~4 <= 2 && 2 <= main_~y~4) && main_~x~4 <= 1) && 1 <= main_~x~4)) || (((main_~y~4 <= 26 && 26 <= main_~y~4) && main_~x~4 <= 73) && 73 <= main_~x~4)) || (((main_~x~4 <= 52 && 52 <= main_~x~4) && 47 <= main_~y~4) && main_~y~4 <= 47)) || (((main_~x~4 <= 16 && 16 <= main_~x~4) && 17 <= main_~y~4) && main_~y~4 <= 17)) || (((main_~x~4 <= 70 && 70 <= main_~x~4) && 29 <= main_~y~4) && main_~y~4 <= 29)) || (((34 <= main_~x~4 && main_~x~4 <= 34) && 35 <= main_~y~4) && main_~y~4 <= 35)) || (((main_~y~4 <= 26 && main_~x~4 <= 25) && 26 <= main_~y~4) && 25 <= main_~x~4)) || (((main_~x~4 <= 78 && 78 <= main_~x~4) && main_~y~4 <= 21) && 21 <= main_~y~4)) || (((67 <= main_~x~4 && 32 <= main_~y~4) && main_~y~4 <= 32) && main_~x~4 <= 67)) || (((main_~y~4 <= 3 && 3 <= main_~y~4) && main_~x~4 <= 96) && 96 <= main_~x~4)) || (((main_~x~4 <= 40 && main_~y~4 <= 41) && 40 <= main_~x~4) && 41 <= main_~y~4)) || (((main_~x~4 <= 11 && 11 <= main_~x~4) && 12 <= main_~y~4) && main_~y~4 <= 12)) || (((18 <= main_~y~4 && main_~x~4 <= 17) && main_~y~4 <= 18) && 17 <= main_~x~4)) || (((main_~x~4 <= 39 && main_~y~4 <= 40) && 39 <= main_~x~4) && 40 <= main_~y~4)) || (((39 <= main_~y~4 && main_~y~4 <= 39) && 60 <= main_~x~4) && main_~x~4 <= 60)) || (((main_~x~4 <= 35 && 35 <= main_~x~4) && main_~y~4 <= 36) && 36 <= main_~y~4)) || (((48 <= main_~y~4 && 47 <= main_~x~4) && main_~y~4 <= 48) && main_~x~4 <= 47) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. SAFE Result, 123.3s OverallTime, 39 OverallIterations, 102 TraceHistogramMax, 37.3s AutomataDifference, 0.0s DeadEndRemovalTime, 31.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 193 SDtfs, 1023 SDslu, 3183 SDs, 0 SdLazy, 14382 SolverSat, 885 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4920 GetRequests, 3597 SyntacticMatches, 1 SemanticMatches, 1322 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7422 ImplicationChecksByTransitivity, 33.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2806occurred in iteration=38, 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: 14.7s AutomataMinimizationTime, 39 MinimizatonAttempts, 1976 StatesRemovedByMinimization, 36 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 205 NumberOfFragments, 2628 HoareAnnotationTreeSize, 3 FomulaSimplifications, 520258123268 FormulaSimplificationTreeSizeReduction, 10.4s HoareSimplificationTime, 3 FomulaSimplificationsInter, 1637333704 FormulaSimplificationTreeSizeReductionInter, 21.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 33.8s InterpolantComputationTime, 7404 NumberOfCodeBlocks, 7392 NumberOfCodeBlocksAsserted, 1004 NumberOfCheckSat, 7329 ConstructedInterpolants, 0 QuantifiedInterpolants, 2558287 SizeOfPredicates, 36 NumberOfNonLiveVariables, 10962 ConjunctsInSsa, 1250 ConjunctsInUnsatCore, 75 InterpolantComputations, 3 PerfectInterpolantSequences, 178432/260286 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/gr2006.c.i_4.bplTransformedIcfg_BEv2_3.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-23_19-37-33-494.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/gr2006.c.i_4.bplTransformedIcfg_BEv2_3.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-23_19-37-33-494.csv Received shutdown request...