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/gj2007.c.i_4.bplTransformedIcfg_BEv2_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-bd42740 [2018-09-23 21:21:55,100 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-23 21:21:55,102 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-23 21:21:55,114 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-23 21:21:55,115 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-23 21:21:55,116 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-23 21:21:55,117 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-23 21:21:55,119 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-23 21:21:55,121 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-23 21:21:55,122 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-23 21:21:55,123 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-23 21:21:55,146 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 21:21:55,160 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-23 21:21:55,160 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-23 21:21:55,161 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-23 21:21:55,161 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-23 21:21:55,162 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-23 21:21:55,162 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-23 21:21:55,162 INFO L133 SettingsManager]: * Use SBE=true [2018-09-23 21:21:55,163 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-23 21:21:55,163 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-23 21:21:55,163 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-23 21:21:55,163 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-23 21:21:55,163 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-23 21:21:55,163 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-23 21:21:55,164 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-23 21:21:55,164 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-23 21:21:55,165 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-23 21:21:55,165 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-23 21:21:55,165 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-23 21:21:55,166 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-23 21:21:55,166 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-23 21:21:55,166 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-23 21:21:55,166 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-23 21:21:55,166 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-23 21:21:55,167 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-23 21:21:55,167 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-23 21:21:55,167 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-23 21:21:55,167 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-23 21:21:55,167 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-23 21:21:55,168 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-23 21:21:55,168 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-23 21:21:55,212 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-23 21:21:55,228 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-23 21:21:55,236 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-23 21:21:55,237 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-23 21:21:55,238 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-23 21:21:55,239 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/gj2007.c.i_4.bplTransformedIcfg_BEv2_3.bpl [2018-09-23 21:21:55,239 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/gj2007.c.i_4.bplTransformedIcfg_BEv2_3.bpl' [2018-09-23 21:21:55,292 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-23 21:21:55,296 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-23 21:21:55,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-23 21:21:55,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-23 21:21:55,297 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-23 21:21:55,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "gj2007.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 09:21:55" (1/1) ... [2018-09-23 21:21:55,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "gj2007.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 09:21:55" (1/1) ... [2018-09-23 21:21:55,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-23 21:21:55,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-23 21:21:55,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-23 21:21:55,340 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-23 21:21:55,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "gj2007.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 09:21:55" (1/1) ... [2018-09-23 21:21:55,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "gj2007.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 09:21:55" (1/1) ... [2018-09-23 21:21:55,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "gj2007.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 09:21:55" (1/1) ... [2018-09-23 21:21:55,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "gj2007.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 09:21:55" (1/1) ... [2018-09-23 21:21:55,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "gj2007.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 09:21:55" (1/1) ... [2018-09-23 21:21:55,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "gj2007.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 09:21:55" (1/1) ... [2018-09-23 21:21:55,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "gj2007.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 09:21:55" (1/1) ... [2018-09-23 21:21:55,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-23 21:21:55,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-23 21:21:55,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-23 21:21:55,363 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-23 21:21:55,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "gj2007.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 09:21:55" (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 21:21:55,441 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-09-23 21:21:55,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-23 21:21:55,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-23 21:21:55,675 INFO L354 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-23 21:21:55,676 INFO L202 PluginConnector]: Adding new model gj2007.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.09 09:21:55 BoogieIcfgContainer [2018-09-23 21:21:55,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-23 21:21:55,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-23 21:21:55,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-23 21:21:55,681 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-23 21:21:55,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "gj2007.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 09:21:55" (1/2) ... [2018-09-23 21:21:55,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11cac0 and model type gj2007.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.09 09:21:55, skipping insertion in model container [2018-09-23 21:21:55,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "gj2007.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.09 09:21:55" (2/2) ... [2018-09-23 21:21:55,686 INFO L112 eAbstractionObserver]: Analyzing ICFG gj2007.c.i_4.bplTransformedIcfg_BEv2_3.bpl [2018-09-23 21:21:55,698 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-23 21:21:55,708 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-23 21:21:55,770 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-23 21:21:55,771 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-23 21:21:55,771 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-23 21:21:55,773 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-23 21:21:55,773 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-23 21:21:55,773 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-23 21:21:55,774 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-23 21:21:55,774 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-23 21:21:55,774 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-23 21:21:55,791 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-09-23 21:21:55,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-23 21:21:55,806 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:21:55,810 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-23 21:21:55,812 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:21:55,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:21:55,821 INFO L82 PathProgramCache]: Analyzing trace with hash 30023, now seen corresponding path program 1 times [2018-09-23 21:21:55,824 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:21:55,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:21:55,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:21:55,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 21:21:55,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:21:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:21:55,975 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 21:21:55,979 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-23 21:21:55,979 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-23 21:21:55,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-23 21:21:55,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-23 21:21:55,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-23 21:21:56,001 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-09-23 21:21:56,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:21:56,086 INFO L93 Difference]: Finished difference Result 13 states and 18 transitions. [2018-09-23 21:21:56,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-23 21:21:56,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-09-23 21:21:56,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:21:56,100 INFO L225 Difference]: With dead ends: 13 [2018-09-23 21:21:56,100 INFO L226 Difference]: Without dead ends: 7 [2018-09-23 21:21:56,112 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 21:21:56,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-23 21:21:56,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-23 21:21:56,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-23 21:21:56,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-09-23 21:21:56,182 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 3 [2018-09-23 21:21:56,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:21:56,182 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-09-23 21:21:56,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-23 21:21:56,183 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2018-09-23 21:21:56,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-09-23 21:21:56,183 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:21:56,184 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-09-23 21:21:56,184 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:21:56,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:21:56,185 INFO L82 PathProgramCache]: Analyzing trace with hash 28788909, now seen corresponding path program 1 times [2018-09-23 21:21:56,185 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:21:56,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:21:56,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:21:56,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 21:21:56,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:21:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:21:56,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 21:21:56,272 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:21:56,272 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 21:21:56,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 21:21:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:21:56,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:21:56,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 21:21:56,452 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-09-23 21:21:56,453 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-09-23 21:21:56,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-23 21:21:56,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-23 21:21:56,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-23 21:21:56,455 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. Second operand 5 states. [2018-09-23 21:21:56,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:21:56,710 INFO L93 Difference]: Finished difference Result 15 states and 21 transitions. [2018-09-23 21:21:56,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-23 21:21:56,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-09-23 21:21:56,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:21:56,711 INFO L225 Difference]: With dead ends: 15 [2018-09-23 21:21:56,712 INFO L226 Difference]: Without dead ends: 11 [2018-09-23 21:21:56,713 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-23 21:21:56,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-09-23 21:21:56,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2018-09-23 21:21:56,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-09-23 21:21:56,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2018-09-23 21:21:56,718 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 5 [2018-09-23 21:21:56,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:21:56,720 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2018-09-23 21:21:56,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-23 21:21:56,720 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2018-09-23 21:21:56,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-09-23 21:21:56,721 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:21:56,721 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2018-09-23 21:21:56,721 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:21:56,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:21:56,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1253675643, now seen corresponding path program 1 times [2018-09-23 21:21:56,722 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:21:56,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:21:56,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:21:56,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 21:21:56,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:21:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:21:56,849 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 21:21:56,850 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:21:56,850 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 21:21:56,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 21:21:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:21:56,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:21:56,885 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 21:21:56,906 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:21:56,906 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-09-23 21:21:56,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-23 21:21:56,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-23 21:21:56,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-23 21:21:56,908 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 5 states. [2018-09-23 21:21:56,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:21:56,955 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2018-09-23 21:21:56,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-23 21:21:56,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-09-23 21:21:56,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:21:56,956 INFO L225 Difference]: With dead ends: 17 [2018-09-23 21:21:56,957 INFO L226 Difference]: Without dead ends: 12 [2018-09-23 21:21:56,957 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-23 21:21:56,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-09-23 21:21:56,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-09-23 21:21:56,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-09-23 21:21:56,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2018-09-23 21:21:56,961 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9 [2018-09-23 21:21:56,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:21:56,962 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2018-09-23 21:21:56,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-23 21:21:56,962 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2018-09-23 21:21:56,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-23 21:21:56,963 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:21:56,963 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1] [2018-09-23 21:21:56,963 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:21:56,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:21:56,964 INFO L82 PathProgramCache]: Analyzing trace with hash -2105425567, now seen corresponding path program 2 times [2018-09-23 21:21:56,964 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:21:56,964 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:21:56,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:21:56,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 21:21:56,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:21:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:21:57,078 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 21:21:57,079 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:21:57,079 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) [2018-09-23 21:21:57,094 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 21:21:57,121 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-23 21:21:57,122 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:21:57,124 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:21:57,131 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 21:21:57,165 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:21:57,165 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-09-23 21:21:57,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-23 21:21:57,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-23 21:21:57,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-09-23 21:21:57,167 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 6 states. [2018-09-23 21:21:57,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:21:57,341 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2018-09-23 21:21:57,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-23 21:21:57,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-09-23 21:21:57,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:21:57,343 INFO L225 Difference]: With dead ends: 19 [2018-09-23 21:21:57,344 INFO L226 Difference]: Without dead ends: 14 [2018-09-23 21:21:57,344 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-09-23 21:21:57,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-23 21:21:57,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-23 21:21:57,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-23 21:21:57,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-09-23 21:21:57,350 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2018-09-23 21:21:57,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:21:57,350 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-09-23 21:21:57,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-23 21:21:57,351 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-09-23 21:21:57,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-23 21:21:57,352 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:21:57,352 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1] [2018-09-23 21:21:57,352 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:21:57,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:21:57,353 INFO L82 PathProgramCache]: Analyzing trace with hash -386281785, now seen corresponding path program 3 times [2018-09-23 21:21:57,353 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:21:57,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:21:57,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:21:57,357 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:21:57,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:21:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:21:57,650 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 21:21:57,650 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:21:57,650 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 21:21:57,661 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-23 21:21:57,681 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-23 21:21:57,682 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:21:57,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:21:57,764 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-23 21:21:57,787 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:21:57,787 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2018-09-23 21:21:57,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-23 21:21:57,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-23 21:21:57,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-09-23 21:21:57,789 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 9 states. [2018-09-23 21:21:57,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:21:57,985 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2018-09-23 21:21:57,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-23 21:21:57,986 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2018-09-23 21:21:57,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:21:57,989 INFO L225 Difference]: With dead ends: 24 [2018-09-23 21:21:57,989 INFO L226 Difference]: Without dead ends: 19 [2018-09-23 21:21:57,990 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-09-23 21:21:57,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-23 21:21:57,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2018-09-23 21:21:57,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-09-23 21:21:57,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-09-23 21:21:57,996 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 13 [2018-09-23 21:21:57,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:21:57,996 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-09-23 21:21:57,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-23 21:21:57,996 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-09-23 21:21:57,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-23 21:21:57,997 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:21:57,997 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-09-23 21:21:57,998 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:21:57,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:21:57,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1190710251, now seen corresponding path program 4 times [2018-09-23 21:21:57,998 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:21:57,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:21:57,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:21:58,000 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:21:58,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:21:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:21:58,096 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-23 21:21:58,097 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:21:58,097 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 21:21:58,107 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-23 21:21:58,120 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-23 21:21:58,121 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:21:58,122 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:21:58,133 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-23 21:21:58,155 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:21:58,155 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-09-23 21:21:58,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-23 21:21:58,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-23 21:21:58,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-09-23 21:21:58,157 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 8 states. [2018-09-23 21:21:58,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:21:58,217 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2018-09-23 21:21:58,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-23 21:21:58,218 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-09-23 21:21:58,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:21:58,220 INFO L225 Difference]: With dead ends: 27 [2018-09-23 21:21:58,220 INFO L226 Difference]: Without dead ends: 20 [2018-09-23 21:21:58,221 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 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 21:21:58,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-09-23 21:21:58,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-09-23 21:21:58,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-09-23 21:21:58,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-09-23 21:21:58,226 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2018-09-23 21:21:58,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:21:58,226 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-09-23 21:21:58,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-23 21:21:58,226 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-09-23 21:21:58,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-23 21:21:58,227 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:21:58,227 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1] [2018-09-23 21:21:58,228 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:21:58,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:21:58,228 INFO L82 PathProgramCache]: Analyzing trace with hash 708648187, now seen corresponding path program 5 times [2018-09-23 21:21:58,228 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:21:58,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:21:58,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:21:58,230 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:21:58,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:21:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:21:58,596 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-23 21:21:58,596 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:21:58,599 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 21:21:58,623 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-23 21:21:58,681 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2018-09-23 21:21:58,681 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:21:58,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:21:58,693 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-23 21:21:58,717 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:21:58,717 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-09-23 21:21:58,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-23 21:21:58,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-23 21:21:58,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-09-23 21:21:58,718 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 9 states. [2018-09-23 21:21:58,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:21:58,779 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2018-09-23 21:21:58,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-23 21:21:58,780 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-09-23 21:21:58,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:21:58,781 INFO L225 Difference]: With dead ends: 29 [2018-09-23 21:21:58,781 INFO L226 Difference]: Without dead ends: 22 [2018-09-23 21:21:58,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-09-23 21:21:58,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-09-23 21:21:58,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-09-23 21:21:58,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-09-23 21:21:58,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2018-09-23 21:21:58,787 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2018-09-23 21:21:58,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:21:58,787 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2018-09-23 21:21:58,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-23 21:21:58,788 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2018-09-23 21:21:58,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-23 21:21:58,788 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:21:58,788 INFO L375 BasicCegarLoop]: trace histogram [9, 7, 2, 1, 1, 1] [2018-09-23 21:21:58,789 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:21:58,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:21:58,789 INFO L82 PathProgramCache]: Analyzing trace with hash 631006305, now seen corresponding path program 6 times [2018-09-23 21:21:58,789 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:21:58,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:21:58,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:21:58,791 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:21:58,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:21:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:21:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 24 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-23 21:21:58,926 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:21:58,927 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 21:21:58,934 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-23 21:21:58,950 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-09-23 21:21:58,950 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:21:58,952 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:21:59,171 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 17 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 21:21:59,197 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:21:59,198 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2018-09-23 21:21:59,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-23 21:21:59,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-23 21:21:59,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-09-23 21:21:59,199 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 19 states. [2018-09-23 21:21:59,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:21:59,633 INFO L93 Difference]: Finished difference Result 46 states and 66 transitions. [2018-09-23 21:21:59,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-23 21:21:59,634 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 21 [2018-09-23 21:21:59,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:21:59,635 INFO L225 Difference]: With dead ends: 46 [2018-09-23 21:21:59,635 INFO L226 Difference]: Without dead ends: 39 [2018-09-23 21:21:59,636 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-09-23 21:21:59,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-23 21:21:59,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2018-09-23 21:21:59,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-09-23 21:21:59,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2018-09-23 21:21:59,643 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 21 [2018-09-23 21:21:59,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:21:59,644 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2018-09-23 21:21:59,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-23 21:21:59,644 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2018-09-23 21:21:59,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-23 21:21:59,646 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:21:59,646 INFO L375 BasicCegarLoop]: trace histogram [17, 9, 8, 1, 1, 1] [2018-09-23 21:21:59,646 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:21:59,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:21:59,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1448674463, now seen corresponding path program 7 times [2018-09-23 21:21:59,647 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:21:59,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:21:59,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:21:59,648 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:21:59,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:21:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:21:59,899 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 153 proven. 72 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-23 21:21:59,899 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:21:59,899 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 21:21:59,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 21:21:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:21:59,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:21:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 153 proven. 72 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-23 21:22:00,013 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:00,013 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-09-23 21:22:00,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-23 21:22:00,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-23 21:22:00,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-09-23 21:22:00,015 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand 11 states. [2018-09-23 21:22:00,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:00,170 INFO L93 Difference]: Finished difference Result 61 states and 80 transitions. [2018-09-23 21:22:00,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-23 21:22:00,172 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2018-09-23 21:22:00,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:00,173 INFO L225 Difference]: With dead ends: 61 [2018-09-23 21:22:00,174 INFO L226 Difference]: Without dead ends: 40 [2018-09-23 21:22:00,175 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-09-23 21:22:00,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-09-23 21:22:00,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-09-23 21:22:00,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-09-23 21:22:00,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2018-09-23 21:22:00,182 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 37 [2018-09-23 21:22:00,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:00,182 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2018-09-23 21:22:00,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-23 21:22:00,182 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2018-09-23 21:22:00,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-23 21:22:00,183 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:00,183 INFO L375 BasicCegarLoop]: trace histogram [18, 9, 9, 1, 1, 1] [2018-09-23 21:22:00,184 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:00,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:00,184 INFO L82 PathProgramCache]: Analyzing trace with hash 183991941, now seen corresponding path program 8 times [2018-09-23 21:22:00,184 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:00,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:00,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:00,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 21:22:00,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:00,367 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 170 proven. 90 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-23 21:22:00,368 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:00,368 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 21:22:00,387 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-23 21:22:00,410 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-23 21:22:00,410 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:00,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:00,425 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 170 proven. 90 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-23 21:22:00,448 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:00,448 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-09-23 21:22:00,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-23 21:22:00,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-23 21:22:00,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-09-23 21:22:00,450 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand 12 states. [2018-09-23 21:22:00,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:00,545 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2018-09-23 21:22:00,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-23 21:22:00,546 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2018-09-23 21:22:00,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:00,547 INFO L225 Difference]: With dead ends: 63 [2018-09-23 21:22:00,547 INFO L226 Difference]: Without dead ends: 42 [2018-09-23 21:22:00,547 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 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 21:22:00,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-09-23 21:22:00,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-09-23 21:22:00,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-09-23 21:22:00,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2018-09-23 21:22:00,555 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 39 [2018-09-23 21:22:00,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:00,556 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2018-09-23 21:22:00,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-23 21:22:00,556 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2018-09-23 21:22:00,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-09-23 21:22:00,557 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:00,557 INFO L375 BasicCegarLoop]: trace histogram [19, 10, 9, 1, 1, 1] [2018-09-23 21:22:00,558 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:00,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:00,558 INFO L82 PathProgramCache]: Analyzing trace with hash 299833067, now seen corresponding path program 9 times [2018-09-23 21:22:00,558 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:00,558 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:00,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:00,559 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:00,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:00,874 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 187 proven. 110 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-23 21:22:00,874 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:00,874 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 21:22:00,882 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-23 21:22:00,933 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2018-09-23 21:22:00,934 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:00,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:01,494 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 37 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 21:22:01,515 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:01,516 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 21] total 32 [2018-09-23 21:22:01,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-23 21:22:01,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-23 21:22:01,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-09-23 21:22:01,518 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand 32 states. [2018-09-23 21:22:01,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:01,760 INFO L93 Difference]: Finished difference Result 86 states and 126 transitions. [2018-09-23 21:22:01,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-23 21:22:01,761 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 41 [2018-09-23 21:22:01,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:01,762 INFO L225 Difference]: With dead ends: 86 [2018-09-23 21:22:01,762 INFO L226 Difference]: Without dead ends: 65 [2018-09-23 21:22:01,764 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-09-23 21:22:01,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-09-23 21:22:01,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2018-09-23 21:22:01,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-23 21:22:01,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2018-09-23 21:22:01,772 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 41 [2018-09-23 21:22:01,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:01,773 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2018-09-23 21:22:01,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-23 21:22:01,773 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2018-09-23 21:22:01,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-09-23 21:22:01,775 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:01,775 INFO L375 BasicCegarLoop]: trace histogram [30, 19, 11, 1, 1, 1] [2018-09-23 21:22:01,775 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:01,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:01,776 INFO L82 PathProgramCache]: Analyzing trace with hash -156794911, now seen corresponding path program 10 times [2018-09-23 21:22:01,776 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:01,776 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:01,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:01,777 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:01,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:02,144 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 444 proven. 132 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2018-09-23 21:22:02,144 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:02,144 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 21:22:02,157 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-23 21:22:02,221 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-23 21:22:02,222 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:02,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 444 proven. 132 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2018-09-23 21:22:02,290 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:02,291 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-09-23 21:22:02,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-23 21:22:02,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-23 21:22:02,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-09-23 21:22:02,292 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand 14 states. [2018-09-23 21:22:02,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:02,586 INFO L93 Difference]: Finished difference Result 107 states and 146 transitions. [2018-09-23 21:22:02,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-23 21:22:02,587 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2018-09-23 21:22:02,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:02,588 INFO L225 Difference]: With dead ends: 107 [2018-09-23 21:22:02,588 INFO L226 Difference]: Without dead ends: 66 [2018-09-23 21:22:02,589 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 63 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 21:22:02,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-09-23 21:22:02,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-09-23 21:22:02,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-09-23 21:22:02,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2018-09-23 21:22:02,597 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 85 transitions. Word has length 63 [2018-09-23 21:22:02,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:02,598 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 85 transitions. [2018-09-23 21:22:02,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-23 21:22:02,598 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 85 transitions. [2018-09-23 21:22:02,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-09-23 21:22:02,599 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:02,599 INFO L375 BasicCegarLoop]: trace histogram [31, 19, 12, 1, 1, 1] [2018-09-23 21:22:02,599 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:02,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:02,600 INFO L82 PathProgramCache]: Analyzing trace with hash -779762105, now seen corresponding path program 11 times [2018-09-23 21:22:02,600 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:02,600 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:02,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:02,601 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:02,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 481 proven. 156 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2018-09-23 21:22:02,868 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:02,868 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 21:22:02,880 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-23 21:22:02,991 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2018-09-23 21:22:02,992 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:02,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:03,008 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 481 proven. 156 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2018-09-23 21:22:03,031 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:03,031 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-09-23 21:22:03,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-23 21:22:03,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-23 21:22:03,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-09-23 21:22:03,033 INFO L87 Difference]: Start difference. First operand 66 states and 85 transitions. Second operand 15 states. [2018-09-23 21:22:03,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:03,271 INFO L93 Difference]: Finished difference Result 109 states and 148 transitions. [2018-09-23 21:22:03,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-23 21:22:03,272 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2018-09-23 21:22:03,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:03,273 INFO L225 Difference]: With dead ends: 109 [2018-09-23 21:22:03,273 INFO L226 Difference]: Without dead ends: 68 [2018-09-23 21:22:03,274 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-09-23 21:22:03,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-23 21:22:03,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-09-23 21:22:03,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-09-23 21:22:03,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 87 transitions. [2018-09-23 21:22:03,283 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 87 transitions. Word has length 65 [2018-09-23 21:22:03,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:03,283 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 87 transitions. [2018-09-23 21:22:03,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-23 21:22:03,283 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 87 transitions. [2018-09-23 21:22:03,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-09-23 21:22:03,284 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:03,285 INFO L375 BasicCegarLoop]: trace histogram [32, 19, 13, 1, 1, 1] [2018-09-23 21:22:03,285 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:03,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:03,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1844185901, now seen corresponding path program 12 times [2018-09-23 21:22:03,285 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:03,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:03,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:03,287 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:03,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:03,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 518 proven. 182 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2018-09-23 21:22:03,510 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:03,510 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 21:22:03,519 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-23 21:22:03,559 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2018-09-23 21:22:03,560 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:03,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:04,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 507 proven. 361 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-09-23 21:22:04,404 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:04,404 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 22] total 36 [2018-09-23 21:22:04,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-23 21:22:04,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-23 21:22:04,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-09-23 21:22:04,405 INFO L87 Difference]: Start difference. First operand 68 states and 87 transitions. Second operand 36 states. [2018-09-23 21:22:04,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:04,797 INFO L93 Difference]: Finished difference Result 114 states and 156 transitions. [2018-09-23 21:22:04,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-23 21:22:04,798 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 67 [2018-09-23 21:22:04,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:04,799 INFO L225 Difference]: With dead ends: 114 [2018-09-23 21:22:04,799 INFO L226 Difference]: Without dead ends: 73 [2018-09-23 21:22:04,801 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-09-23 21:22:04,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-09-23 21:22:04,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2018-09-23 21:22:04,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-09-23 21:22:04,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2018-09-23 21:22:04,810 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 67 [2018-09-23 21:22:04,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:04,810 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2018-09-23 21:22:04,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-23 21:22:04,810 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2018-09-23 21:22:04,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-09-23 21:22:04,811 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:04,811 INFO L375 BasicCegarLoop]: trace histogram [34, 20, 14, 1, 1, 1] [2018-09-23 21:22:04,812 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:04,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:04,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1734502011, now seen corresponding path program 13 times [2018-09-23 21:22:04,812 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:04,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:04,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:04,813 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:04,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:05,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 585 proven. 210 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-09-23 21:22:05,020 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:05,020 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 21:22:05,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 21:22:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:05,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:05,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 585 proven. 210 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-09-23 21:22:05,102 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:05,102 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-09-23 21:22:05,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-23 21:22:05,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-23 21:22:05,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-09-23 21:22:05,103 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand 17 states. [2018-09-23 21:22:05,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:05,239 INFO L93 Difference]: Finished difference Result 117 states and 158 transitions. [2018-09-23 21:22:05,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-23 21:22:05,240 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 71 [2018-09-23 21:22:05,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:05,241 INFO L225 Difference]: With dead ends: 117 [2018-09-23 21:22:05,242 INFO L226 Difference]: Without dead ends: 74 [2018-09-23 21:22:05,243 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 71 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 21:22:05,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-09-23 21:22:05,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-09-23 21:22:05,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-09-23 21:22:05,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2018-09-23 21:22:05,253 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 71 [2018-09-23 21:22:05,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:05,253 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2018-09-23 21:22:05,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-23 21:22:05,254 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2018-09-23 21:22:05,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-09-23 21:22:05,257 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:05,257 INFO L375 BasicCegarLoop]: trace histogram [35, 20, 15, 1, 1, 1] [2018-09-23 21:22:05,261 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:05,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:05,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1306453729, now seen corresponding path program 14 times [2018-09-23 21:22:05,262 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:05,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:05,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:05,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 21:22:05,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 624 proven. 240 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-09-23 21:22:05,495 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:05,496 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 21:22:05,505 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-23 21:22:05,540 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-23 21:22:05,541 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:05,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:05,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 624 proven. 240 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-09-23 21:22:05,600 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:05,600 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-09-23 21:22:05,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-23 21:22:05,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-23 21:22:05,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-09-23 21:22:05,601 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand 18 states. [2018-09-23 21:22:05,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:05,824 INFO L93 Difference]: Finished difference Result 119 states and 160 transitions. [2018-09-23 21:22:05,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-23 21:22:05,825 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 73 [2018-09-23 21:22:05,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:05,825 INFO L225 Difference]: With dead ends: 119 [2018-09-23 21:22:05,825 INFO L226 Difference]: Without dead ends: 76 [2018-09-23 21:22:05,826 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 73 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 21:22:05,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-09-23 21:22:05,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-09-23 21:22:05,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-09-23 21:22:05,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2018-09-23 21:22:05,833 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 73 [2018-09-23 21:22:05,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:05,833 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2018-09-23 21:22:05,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-23 21:22:05,833 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2018-09-23 21:22:05,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-09-23 21:22:05,834 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:05,835 INFO L375 BasicCegarLoop]: trace histogram [36, 20, 16, 1, 1, 1] [2018-09-23 21:22:05,835 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:05,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:05,835 INFO L82 PathProgramCache]: Analyzing trace with hash -2026052153, now seen corresponding path program 15 times [2018-09-23 21:22:05,835 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:05,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:05,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:05,836 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:05,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:06,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 663 proven. 272 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-09-23 21:22:06,258 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:06,258 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 21:22:06,266 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-23 21:22:06,341 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2018-09-23 21:22:06,341 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:06,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 663 proven. 272 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-09-23 21:22:06,377 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:06,377 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-09-23 21:22:06,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-23 21:22:06,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-23 21:22:06,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-09-23 21:22:06,378 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand 19 states. [2018-09-23 21:22:06,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:06,466 INFO L93 Difference]: Finished difference Result 121 states and 162 transitions. [2018-09-23 21:22:06,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-23 21:22:06,467 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 75 [2018-09-23 21:22:06,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:06,468 INFO L225 Difference]: With dead ends: 121 [2018-09-23 21:22:06,468 INFO L226 Difference]: Without dead ends: 78 [2018-09-23 21:22:06,469 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-09-23 21:22:06,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-09-23 21:22:06,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-09-23 21:22:06,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-09-23 21:22:06,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 98 transitions. [2018-09-23 21:22:06,476 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 98 transitions. Word has length 75 [2018-09-23 21:22:06,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:06,476 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 98 transitions. [2018-09-23 21:22:06,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-23 21:22:06,476 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 98 transitions. [2018-09-23 21:22:06,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-09-23 21:22:06,477 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:06,478 INFO L375 BasicCegarLoop]: trace histogram [37, 20, 17, 1, 1, 1] [2018-09-23 21:22:06,478 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:06,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:06,478 INFO L82 PathProgramCache]: Analyzing trace with hash -518601939, now seen corresponding path program 16 times [2018-09-23 21:22:06,478 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:06,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:06,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:06,479 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:06,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:06,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 702 proven. 306 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-09-23 21:22:06,757 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:06,757 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 21:22:06,765 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-23 21:22:06,803 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-23 21:22:06,803 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:06,805 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 702 proven. 306 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-09-23 21:22:06,855 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:06,855 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-09-23 21:22:06,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-23 21:22:06,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-23 21:22:06,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-09-23 21:22:06,856 INFO L87 Difference]: Start difference. First operand 78 states and 98 transitions. Second operand 20 states. [2018-09-23 21:22:06,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:06,993 INFO L93 Difference]: Finished difference Result 123 states and 164 transitions. [2018-09-23 21:22:06,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-23 21:22:06,994 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 77 [2018-09-23 21:22:06,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:06,995 INFO L225 Difference]: With dead ends: 123 [2018-09-23 21:22:06,995 INFO L226 Difference]: Without dead ends: 80 [2018-09-23 21:22:06,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-09-23 21:22:06,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-09-23 21:22:07,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-09-23 21:22:07,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-09-23 21:22:07,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2018-09-23 21:22:07,003 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 77 [2018-09-23 21:22:07,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:07,004 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2018-09-23 21:22:07,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-23 21:22:07,004 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2018-09-23 21:22:07,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-09-23 21:22:07,005 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:07,005 INFO L375 BasicCegarLoop]: trace histogram [38, 20, 18, 1, 1, 1] [2018-09-23 21:22:07,006 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:07,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:07,006 INFO L82 PathProgramCache]: Analyzing trace with hash 737074963, now seen corresponding path program 17 times [2018-09-23 21:22:07,006 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:07,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:07,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:07,007 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:07,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:07,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 741 proven. 342 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-09-23 21:22:07,310 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:07,310 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 21:22:07,318 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-23 21:22:07,362 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 39 check-sat command(s) [2018-09-23 21:22:07,362 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:07,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:07,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 741 proven. 342 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-09-23 21:22:07,400 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:07,400 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-09-23 21:22:07,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-23 21:22:07,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-23 21:22:07,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-09-23 21:22:07,401 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand 21 states. [2018-09-23 21:22:07,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:07,470 INFO L93 Difference]: Finished difference Result 125 states and 166 transitions. [2018-09-23 21:22:07,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-23 21:22:07,470 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 79 [2018-09-23 21:22:07,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:07,471 INFO L225 Difference]: With dead ends: 125 [2018-09-23 21:22:07,472 INFO L226 Difference]: Without dead ends: 82 [2018-09-23 21:22:07,472 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-09-23 21:22:07,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-09-23 21:22:07,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-09-23 21:22:07,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-09-23 21:22:07,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 102 transitions. [2018-09-23 21:22:07,478 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 102 transitions. Word has length 79 [2018-09-23 21:22:07,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:07,479 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 102 transitions. [2018-09-23 21:22:07,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-23 21:22:07,479 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 102 transitions. [2018-09-23 21:22:07,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-09-23 21:22:07,480 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:07,480 INFO L375 BasicCegarLoop]: trace histogram [39, 20, 19, 1, 1, 1] [2018-09-23 21:22:07,480 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:07,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:07,480 INFO L82 PathProgramCache]: Analyzing trace with hash 556767609, now seen corresponding path program 18 times [2018-09-23 21:22:07,481 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:07,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:07,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:07,482 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:07,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:07,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 780 proven. 380 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-09-23 21:22:07,855 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:07,855 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 21:22:07,866 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-23 21:22:07,927 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 39 check-sat command(s) [2018-09-23 21:22:07,928 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:07,930 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:08,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 779 proven. 400 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-09-23 21:22:08,877 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:08,878 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 43 [2018-09-23 21:22:08,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-09-23 21:22:08,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-09-23 21:22:08,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-09-23 21:22:08,879 INFO L87 Difference]: Start difference. First operand 82 states and 102 transitions. Second operand 43 states. [2018-09-23 21:22:09,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:09,286 INFO L93 Difference]: Finished difference Result 130 states and 174 transitions. [2018-09-23 21:22:09,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-23 21:22:09,287 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 81 [2018-09-23 21:22:09,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:09,288 INFO L225 Difference]: With dead ends: 130 [2018-09-23 21:22:09,288 INFO L226 Difference]: Without dead ends: 87 [2018-09-23 21:22:09,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-09-23 21:22:09,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-09-23 21:22:09,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2018-09-23 21:22:09,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-09-23 21:22:09,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 107 transitions. [2018-09-23 21:22:09,294 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 107 transitions. Word has length 81 [2018-09-23 21:22:09,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:09,294 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 107 transitions. [2018-09-23 21:22:09,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-09-23 21:22:09,295 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 107 transitions. [2018-09-23 21:22:09,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-09-23 21:22:09,295 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:09,296 INFO L375 BasicCegarLoop]: trace histogram [41, 21, 20, 1, 1, 1] [2018-09-23 21:22:09,296 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:09,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:09,296 INFO L82 PathProgramCache]: Analyzing trace with hash 731858759, now seen corresponding path program 19 times [2018-09-23 21:22:09,296 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:09,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:09,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:09,297 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:09,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:10,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 861 proven. 420 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2018-09-23 21:22:10,189 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:10,189 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 21:22:10,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 21:22:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:10,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:10,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 861 proven. 420 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2018-09-23 21:22:10,268 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:10,268 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-09-23 21:22:10,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-23 21:22:10,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-23 21:22:10,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-09-23 21:22:10,269 INFO L87 Difference]: Start difference. First operand 86 states and 107 transitions. Second operand 23 states. [2018-09-23 21:22:10,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:10,368 INFO L93 Difference]: Finished difference Result 133 states and 176 transitions. [2018-09-23 21:22:10,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-23 21:22:10,368 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 85 [2018-09-23 21:22:10,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:10,369 INFO L225 Difference]: With dead ends: 133 [2018-09-23 21:22:10,369 INFO L226 Difference]: Without dead ends: 88 [2018-09-23 21:22:10,370 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-09-23 21:22:10,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-09-23 21:22:10,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-09-23 21:22:10,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-09-23 21:22:10,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 109 transitions. [2018-09-23 21:22:10,375 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 109 transitions. Word has length 85 [2018-09-23 21:22:10,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:10,375 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 109 transitions. [2018-09-23 21:22:10,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-23 21:22:10,375 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 109 transitions. [2018-09-23 21:22:10,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-09-23 21:22:10,376 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:10,376 INFO L375 BasicCegarLoop]: trace histogram [42, 21, 21, 1, 1, 1] [2018-09-23 21:22:10,376 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:10,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:10,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1951916755, now seen corresponding path program 20 times [2018-09-23 21:22:10,376 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:10,377 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:10,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:10,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 21:22:10,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:10,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 902 proven. 462 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2018-09-23 21:22:10,692 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:10,692 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 21:22:10,700 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-23 21:22:10,732 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-23 21:22:10,732 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:10,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:10,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 902 proven. 462 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2018-09-23 21:22:10,782 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:10,782 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-09-23 21:22:10,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-23 21:22:10,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-23 21:22:10,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-09-23 21:22:10,783 INFO L87 Difference]: Start difference. First operand 88 states and 109 transitions. Second operand 24 states. [2018-09-23 21:22:10,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:10,939 INFO L93 Difference]: Finished difference Result 135 states and 178 transitions. [2018-09-23 21:22:10,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-23 21:22:10,943 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 87 [2018-09-23 21:22:10,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:10,943 INFO L225 Difference]: With dead ends: 135 [2018-09-23 21:22:10,943 INFO L226 Difference]: Without dead ends: 90 [2018-09-23 21:22:10,944 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-09-23 21:22:10,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-09-23 21:22:10,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-09-23 21:22:10,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-09-23 21:22:10,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 111 transitions. [2018-09-23 21:22:10,948 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 111 transitions. Word has length 87 [2018-09-23 21:22:10,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:10,949 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 111 transitions. [2018-09-23 21:22:10,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-23 21:22:10,949 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 111 transitions. [2018-09-23 21:22:10,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-09-23 21:22:10,950 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:10,950 INFO L375 BasicCegarLoop]: trace histogram [43, 22, 21, 1, 1, 1] [2018-09-23 21:22:10,950 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:10,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:10,951 INFO L82 PathProgramCache]: Analyzing trace with hash 215159187, now seen corresponding path program 21 times [2018-09-23 21:22:10,951 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:10,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:10,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:10,952 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:10,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:11,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 943 proven. 506 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2018-09-23 21:22:11,410 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:11,410 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 21:22:11,420 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-23 21:22:11,478 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) [2018-09-23 21:22:11,478 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:11,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:13,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 85 proven. 1764 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 21:22:13,470 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:13,470 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 45] total 68 [2018-09-23 21:22:13,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-23 21:22:13,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-23 21:22:13,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-09-23 21:22:13,473 INFO L87 Difference]: Start difference. First operand 90 states and 111 transitions. Second operand 68 states. [2018-09-23 21:22:14,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:14,047 INFO L93 Difference]: Finished difference Result 182 states and 270 transitions. [2018-09-23 21:22:14,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-09-23 21:22:14,047 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 89 [2018-09-23 21:22:14,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:14,048 INFO L225 Difference]: With dead ends: 182 [2018-09-23 21:22:14,048 INFO L226 Difference]: Without dead ends: 137 [2018-09-23 21:22:14,050 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-09-23 21:22:14,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-09-23 21:22:14,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2018-09-23 21:22:14,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-09-23 21:22:14,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 179 transitions. [2018-09-23 21:22:14,056 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 179 transitions. Word has length 89 [2018-09-23 21:22:14,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:14,056 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 179 transitions. [2018-09-23 21:22:14,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-23 21:22:14,057 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 179 transitions. [2018-09-23 21:22:14,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-09-23 21:22:14,057 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:14,058 INFO L375 BasicCegarLoop]: trace histogram [66, 43, 23, 1, 1, 1] [2018-09-23 21:22:14,058 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:14,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:14,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1550474089, now seen corresponding path program 22 times [2018-09-23 21:22:14,058 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:14,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:14,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:14,059 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:14,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:14,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 2040 proven. 552 refuted. 0 times theorem prover too weak. 1764 trivial. 0 not checked. [2018-09-23 21:22:14,416 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:14,416 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 21:22:14,424 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-23 21:22:14,474 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-23 21:22:14,474 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:14,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:14,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 2040 proven. 552 refuted. 0 times theorem prover too weak. 1764 trivial. 0 not checked. [2018-09-23 21:22:14,513 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:14,513 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-09-23 21:22:14,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-09-23 21:22:14,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-09-23 21:22:14,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-09-23 21:22:14,514 INFO L87 Difference]: Start difference. First operand 136 states and 179 transitions. Second operand 26 states. [2018-09-23 21:22:14,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:14,613 INFO L93 Difference]: Finished difference Result 227 states and 314 transitions. [2018-09-23 21:22:14,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-23 21:22:14,614 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 135 [2018-09-23 21:22:14,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:14,615 INFO L225 Difference]: With dead ends: 227 [2018-09-23 21:22:14,615 INFO L226 Difference]: Without dead ends: 138 [2018-09-23 21:22:14,615 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-09-23 21:22:14,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-09-23 21:22:14,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-09-23 21:22:14,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-09-23 21:22:14,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 181 transitions. [2018-09-23 21:22:14,621 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 181 transitions. Word has length 135 [2018-09-23 21:22:14,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:14,622 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 181 transitions. [2018-09-23 21:22:14,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-09-23 21:22:14,622 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 181 transitions. [2018-09-23 21:22:14,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-09-23 21:22:14,623 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:14,623 INFO L375 BasicCegarLoop]: trace histogram [67, 43, 24, 1, 1, 1] [2018-09-23 21:22:14,623 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:14,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:14,624 INFO L82 PathProgramCache]: Analyzing trace with hash 422620111, now seen corresponding path program 23 times [2018-09-23 21:22:14,624 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:14,624 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:14,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:14,625 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:14,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:15,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 2125 proven. 600 refuted. 0 times theorem prover too weak. 1764 trivial. 0 not checked. [2018-09-23 21:22:15,201 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:15,201 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 21:22:15,208 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-23 21:22:15,307 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 68 check-sat command(s) [2018-09-23 21:22:15,307 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:15,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:15,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 2125 proven. 600 refuted. 0 times theorem prover too weak. 1764 trivial. 0 not checked. [2018-09-23 21:22:15,351 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:15,351 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-09-23 21:22:15,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-09-23 21:22:15,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-09-23 21:22:15,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-09-23 21:22:15,352 INFO L87 Difference]: Start difference. First operand 138 states and 181 transitions. Second operand 27 states. [2018-09-23 21:22:15,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:15,598 INFO L93 Difference]: Finished difference Result 229 states and 316 transitions. [2018-09-23 21:22:15,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-23 21:22:15,599 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 137 [2018-09-23 21:22:15,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:15,600 INFO L225 Difference]: With dead ends: 229 [2018-09-23 21:22:15,600 INFO L226 Difference]: Without dead ends: 140 [2018-09-23 21:22:15,601 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-09-23 21:22:15,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-09-23 21:22:15,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-09-23 21:22:15,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-09-23 21:22:15,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 183 transitions. [2018-09-23 21:22:15,606 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 183 transitions. Word has length 137 [2018-09-23 21:22:15,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:15,606 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 183 transitions. [2018-09-23 21:22:15,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-09-23 21:22:15,606 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 183 transitions. [2018-09-23 21:22:15,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-09-23 21:22:15,607 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:15,607 INFO L375 BasicCegarLoop]: trace histogram [68, 43, 25, 1, 1, 1] [2018-09-23 21:22:15,607 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:15,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:15,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1113294155, now seen corresponding path program 24 times [2018-09-23 21:22:15,608 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:15,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:15,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:15,609 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:15,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:16,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 2210 proven. 650 refuted. 0 times theorem prover too weak. 1764 trivial. 0 not checked. [2018-09-23 21:22:16,124 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:16,124 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 21:22:16,132 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-23 21:22:16,274 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 68 check-sat command(s) [2018-09-23 21:22:16,275 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:16,278 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:18,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 2175 proven. 1849 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2018-09-23 21:22:18,058 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:18,058 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 46] total 72 [2018-09-23 21:22:18,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-23 21:22:18,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-23 21:22:18,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-09-23 21:22:18,061 INFO L87 Difference]: Start difference. First operand 140 states and 183 transitions. Second operand 72 states. [2018-09-23 21:22:18,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:18,802 INFO L93 Difference]: Finished difference Result 234 states and 324 transitions. [2018-09-23 21:22:18,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-09-23 21:22:18,802 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 139 [2018-09-23 21:22:18,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:18,803 INFO L225 Difference]: With dead ends: 234 [2018-09-23 21:22:18,803 INFO L226 Difference]: Without dead ends: 145 [2018-09-23 21:22:18,805 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-09-23 21:22:18,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-09-23 21:22:18,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2018-09-23 21:22:18,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-09-23 21:22:18,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 188 transitions. [2018-09-23 21:22:18,810 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 188 transitions. Word has length 139 [2018-09-23 21:22:18,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:18,810 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 188 transitions. [2018-09-23 21:22:18,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-23 21:22:18,810 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 188 transitions. [2018-09-23 21:22:18,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-23 21:22:18,811 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:18,811 INFO L375 BasicCegarLoop]: trace histogram [70, 44, 26, 1, 1, 1] [2018-09-23 21:22:18,811 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:18,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:18,812 INFO L82 PathProgramCache]: Analyzing trace with hash 2096471555, now seen corresponding path program 25 times [2018-09-23 21:22:18,812 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:18,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:18,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:18,813 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:18,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:19,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2349 proven. 702 refuted. 0 times theorem prover too weak. 1849 trivial. 0 not checked. [2018-09-23 21:22:19,505 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:19,506 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 21:22:19,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 21:22:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:19,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:19,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2349 proven. 702 refuted. 0 times theorem prover too weak. 1849 trivial. 0 not checked. [2018-09-23 21:22:19,612 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:19,612 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-09-23 21:22:19,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-09-23 21:22:19,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-09-23 21:22:19,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-09-23 21:22:19,613 INFO L87 Difference]: Start difference. First operand 144 states and 188 transitions. Second operand 29 states. [2018-09-23 21:22:19,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:19,726 INFO L93 Difference]: Finished difference Result 237 states and 326 transitions. [2018-09-23 21:22:19,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-23 21:22:19,727 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 143 [2018-09-23 21:22:19,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:19,728 INFO L225 Difference]: With dead ends: 237 [2018-09-23 21:22:19,728 INFO L226 Difference]: Without dead ends: 146 [2018-09-23 21:22:19,729 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-09-23 21:22:19,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-09-23 21:22:19,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-09-23 21:22:19,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-09-23 21:22:19,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 190 transitions. [2018-09-23 21:22:19,734 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 190 transitions. Word has length 143 [2018-09-23 21:22:19,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:19,735 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 190 transitions. [2018-09-23 21:22:19,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-09-23 21:22:19,735 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 190 transitions. [2018-09-23 21:22:19,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-09-23 21:22:19,735 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:19,736 INFO L375 BasicCegarLoop]: trace histogram [71, 44, 27, 1, 1, 1] [2018-09-23 21:22:19,736 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:19,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:19,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1984944023, now seen corresponding path program 26 times [2018-09-23 21:22:19,736 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:19,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:19,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:19,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 21:22:19,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 2436 proven. 756 refuted. 0 times theorem prover too weak. 1849 trivial. 0 not checked. [2018-09-23 21:22:20,838 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:20,839 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 21:22:20,847 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-23 21:22:20,897 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-23 21:22:20,897 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:20,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 2436 proven. 756 refuted. 0 times theorem prover too weak. 1849 trivial. 0 not checked. [2018-09-23 21:22:20,939 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:20,939 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-09-23 21:22:20,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-09-23 21:22:20,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-09-23 21:22:20,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-09-23 21:22:20,941 INFO L87 Difference]: Start difference. First operand 146 states and 190 transitions. Second operand 30 states. [2018-09-23 21:22:21,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:21,144 INFO L93 Difference]: Finished difference Result 239 states and 328 transitions. [2018-09-23 21:22:21,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-23 21:22:21,144 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 145 [2018-09-23 21:22:21,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:21,145 INFO L225 Difference]: With dead ends: 239 [2018-09-23 21:22:21,145 INFO L226 Difference]: Without dead ends: 148 [2018-09-23 21:22:21,146 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-09-23 21:22:21,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-09-23 21:22:21,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-09-23 21:22:21,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-09-23 21:22:21,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 192 transitions. [2018-09-23 21:22:21,153 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 192 transitions. Word has length 145 [2018-09-23 21:22:21,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:21,153 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 192 transitions. [2018-09-23 21:22:21,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-09-23 21:22:21,153 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 192 transitions. [2018-09-23 21:22:21,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-09-23 21:22:21,154 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:21,154 INFO L375 BasicCegarLoop]: trace histogram [72, 44, 28, 1, 1, 1] [2018-09-23 21:22:21,154 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:21,155 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:21,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1374794063, now seen corresponding path program 27 times [2018-09-23 21:22:21,155 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:21,155 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:21,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:21,156 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:21,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:21,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 2523 proven. 812 refuted. 0 times theorem prover too weak. 1849 trivial. 0 not checked. [2018-09-23 21:22:21,704 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:21,704 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 21:22:21,712 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-23 21:22:21,785 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2018-09-23 21:22:21,786 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:21,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 2523 proven. 812 refuted. 0 times theorem prover too weak. 1849 trivial. 0 not checked. [2018-09-23 21:22:21,845 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:21,845 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-09-23 21:22:21,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-09-23 21:22:21,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-09-23 21:22:21,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-09-23 21:22:21,846 INFO L87 Difference]: Start difference. First operand 148 states and 192 transitions. Second operand 31 states. [2018-09-23 21:22:21,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:21,940 INFO L93 Difference]: Finished difference Result 241 states and 330 transitions. [2018-09-23 21:22:21,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-23 21:22:21,941 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 147 [2018-09-23 21:22:21,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:21,942 INFO L225 Difference]: With dead ends: 241 [2018-09-23 21:22:21,942 INFO L226 Difference]: Without dead ends: 150 [2018-09-23 21:22:21,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-09-23 21:22:21,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-09-23 21:22:21,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-09-23 21:22:21,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-09-23 21:22:21,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 194 transitions. [2018-09-23 21:22:21,949 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 194 transitions. Word has length 147 [2018-09-23 21:22:21,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:21,949 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 194 transitions. [2018-09-23 21:22:21,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-09-23 21:22:21,949 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 194 transitions. [2018-09-23 21:22:21,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-09-23 21:22:21,950 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:21,950 INFO L375 BasicCegarLoop]: trace histogram [73, 44, 29, 1, 1, 1] [2018-09-23 21:22:21,951 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:21,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:21,951 INFO L82 PathProgramCache]: Analyzing trace with hash 267688117, now seen corresponding path program 28 times [2018-09-23 21:22:21,951 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:21,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:21,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:21,952 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:21,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:22,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 2610 proven. 870 refuted. 0 times theorem prover too weak. 1849 trivial. 0 not checked. [2018-09-23 21:22:22,414 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:22,414 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 21:22:22,431 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-23 21:22:22,501 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-23 21:22:22,502 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:22,505 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:22,526 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 2610 proven. 870 refuted. 0 times theorem prover too weak. 1849 trivial. 0 not checked. [2018-09-23 21:22:22,547 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:22,547 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-09-23 21:22:22,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-23 21:22:22,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-23 21:22:22,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-09-23 21:22:22,549 INFO L87 Difference]: Start difference. First operand 150 states and 194 transitions. Second operand 32 states. [2018-09-23 21:22:22,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:22,723 INFO L93 Difference]: Finished difference Result 243 states and 332 transitions. [2018-09-23 21:22:22,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-23 21:22:22,723 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 149 [2018-09-23 21:22:22,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:22,724 INFO L225 Difference]: With dead ends: 243 [2018-09-23 21:22:22,725 INFO L226 Difference]: Without dead ends: 152 [2018-09-23 21:22:22,725 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-09-23 21:22:22,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-09-23 21:22:22,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-09-23 21:22:22,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-09-23 21:22:22,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 196 transitions. [2018-09-23 21:22:22,731 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 196 transitions. Word has length 149 [2018-09-23 21:22:22,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:22,732 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 196 transitions. [2018-09-23 21:22:22,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-23 21:22:22,732 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 196 transitions. [2018-09-23 21:22:22,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-09-23 21:22:22,733 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:22,733 INFO L375 BasicCegarLoop]: trace histogram [74, 44, 30, 1, 1, 1] [2018-09-23 21:22:22,733 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:22,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:22,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1490763419, now seen corresponding path program 29 times [2018-09-23 21:22:22,734 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:22,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:22,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:22,735 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:22,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:23,795 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 2697 proven. 930 refuted. 0 times theorem prover too weak. 1849 trivial. 0 not checked. [2018-09-23 21:22:23,795 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:23,795 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) [2018-09-23 21:22:23,816 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 21:22:23,985 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 75 check-sat command(s) [2018-09-23 21:22:23,985 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:23,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:24,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 2697 proven. 930 refuted. 0 times theorem prover too weak. 1849 trivial. 0 not checked. [2018-09-23 21:22:24,027 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:24,027 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-09-23 21:22:24,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-09-23 21:22:24,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-09-23 21:22:24,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-09-23 21:22:24,028 INFO L87 Difference]: Start difference. First operand 152 states and 196 transitions. Second operand 33 states. [2018-09-23 21:22:24,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:24,801 INFO L93 Difference]: Finished difference Result 245 states and 334 transitions. [2018-09-23 21:22:24,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-23 21:22:24,801 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 151 [2018-09-23 21:22:24,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:24,802 INFO L225 Difference]: With dead ends: 245 [2018-09-23 21:22:24,802 INFO L226 Difference]: Without dead ends: 154 [2018-09-23 21:22:24,803 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-09-23 21:22:24,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-09-23 21:22:24,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-09-23 21:22:24,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-09-23 21:22:24,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 198 transitions. [2018-09-23 21:22:24,809 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 198 transitions. Word has length 151 [2018-09-23 21:22:24,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:24,809 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 198 transitions. [2018-09-23 21:22:24,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-09-23 21:22:24,809 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 198 transitions. [2018-09-23 21:22:24,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-09-23 21:22:24,810 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:24,810 INFO L375 BasicCegarLoop]: trace histogram [75, 44, 31, 1, 1, 1] [2018-09-23 21:22:24,811 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:24,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:24,811 INFO L82 PathProgramCache]: Analyzing trace with hash 45089537, now seen corresponding path program 30 times [2018-09-23 21:22:24,811 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:24,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:24,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:24,812 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:24,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:25,858 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 2784 proven. 992 refuted. 0 times theorem prover too weak. 1849 trivial. 0 not checked. [2018-09-23 21:22:25,858 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:25,858 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 21:22:25,865 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-23 21:22:25,969 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 75 check-sat command(s) [2018-09-23 21:22:25,970 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:25,974 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 2759 proven. 1936 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-09-23 21:22:28,226 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:28,226 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 47] total 79 [2018-09-23 21:22:28,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-09-23 21:22:28,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-09-23 21:22:28,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-09-23 21:22:28,229 INFO L87 Difference]: Start difference. First operand 154 states and 198 transitions. Second operand 79 states. [2018-09-23 21:22:29,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:29,019 INFO L93 Difference]: Finished difference Result 250 states and 342 transitions. [2018-09-23 21:22:29,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-09-23 21:22:29,020 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 153 [2018-09-23 21:22:29,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:29,021 INFO L225 Difference]: With dead ends: 250 [2018-09-23 21:22:29,021 INFO L226 Difference]: Without dead ends: 159 [2018-09-23 21:22:29,023 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-09-23 21:22:29,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-09-23 21:22:29,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2018-09-23 21:22:29,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-09-23 21:22:29,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 203 transitions. [2018-09-23 21:22:29,028 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 203 transitions. Word has length 153 [2018-09-23 21:22:29,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:29,028 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 203 transitions. [2018-09-23 21:22:29,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-09-23 21:22:29,028 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 203 transitions. [2018-09-23 21:22:29,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-09-23 21:22:29,029 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:29,029 INFO L375 BasicCegarLoop]: trace histogram [77, 45, 32, 1, 1, 1] [2018-09-23 21:22:29,030 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:29,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:29,030 INFO L82 PathProgramCache]: Analyzing trace with hash -2044036913, now seen corresponding path program 31 times [2018-09-23 21:22:29,030 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:29,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:29,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:29,031 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:29,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:29,680 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 2937 proven. 1056 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-09-23 21:22:29,680 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:29,681 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 21:22:29,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 21:22:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:29,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 2937 proven. 1056 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-09-23 21:22:29,793 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:29,793 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-09-23 21:22:29,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-09-23 21:22:29,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-09-23 21:22:29,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-09-23 21:22:29,795 INFO L87 Difference]: Start difference. First operand 158 states and 203 transitions. Second operand 35 states. [2018-09-23 21:22:29,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:29,916 INFO L93 Difference]: Finished difference Result 253 states and 344 transitions. [2018-09-23 21:22:29,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-23 21:22:29,916 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 157 [2018-09-23 21:22:29,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:29,918 INFO L225 Difference]: With dead ends: 253 [2018-09-23 21:22:29,918 INFO L226 Difference]: Without dead ends: 160 [2018-09-23 21:22:29,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-09-23 21:22:29,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-09-23 21:22:29,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-09-23 21:22:29,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-09-23 21:22:29,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 205 transitions. [2018-09-23 21:22:29,925 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 205 transitions. Word has length 157 [2018-09-23 21:22:29,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:29,925 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 205 transitions. [2018-09-23 21:22:29,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-09-23 21:22:29,925 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 205 transitions. [2018-09-23 21:22:29,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-09-23 21:22:29,926 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:29,926 INFO L375 BasicCegarLoop]: trace histogram [78, 45, 33, 1, 1, 1] [2018-09-23 21:22:29,926 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:29,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:29,927 INFO L82 PathProgramCache]: Analyzing trace with hash -635971403, now seen corresponding path program 32 times [2018-09-23 21:22:29,927 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:29,927 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:29,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:29,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 21:22:29,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:30,653 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 3026 proven. 1122 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-09-23 21:22:30,653 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:30,653 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 21:22:30,660 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-23 21:22:30,726 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-23 21:22:30,727 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:30,730 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:30,755 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 3026 proven. 1122 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-09-23 21:22:30,786 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:30,786 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-09-23 21:22:30,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-23 21:22:30,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-23 21:22:30,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-09-23 21:22:30,788 INFO L87 Difference]: Start difference. First operand 160 states and 205 transitions. Second operand 36 states. [2018-09-23 21:22:32,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:32,163 INFO L93 Difference]: Finished difference Result 255 states and 346 transitions. [2018-09-23 21:22:32,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-23 21:22:32,163 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 159 [2018-09-23 21:22:32,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:32,165 INFO L225 Difference]: With dead ends: 255 [2018-09-23 21:22:32,165 INFO L226 Difference]: Without dead ends: 162 [2018-09-23 21:22:32,165 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-09-23 21:22:32,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-09-23 21:22:32,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-09-23 21:22:32,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-09-23 21:22:32,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 207 transitions. [2018-09-23 21:22:32,172 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 207 transitions. Word has length 159 [2018-09-23 21:22:32,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:32,172 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 207 transitions. [2018-09-23 21:22:32,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-23 21:22:32,173 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 207 transitions. [2018-09-23 21:22:32,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-09-23 21:22:32,174 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:32,174 INFO L375 BasicCegarLoop]: trace histogram [79, 45, 34, 1, 1, 1] [2018-09-23 21:22:32,174 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:32,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:32,174 INFO L82 PathProgramCache]: Analyzing trace with hash -399714533, now seen corresponding path program 33 times [2018-09-23 21:22:32,174 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:32,175 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:32,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:32,175 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:32,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:33,144 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 3115 proven. 1190 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-09-23 21:22:33,144 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:33,144 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 21:22:33,152 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-23 21:22:33,248 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 71 check-sat command(s) [2018-09-23 21:22:33,248 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:33,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:33,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 3115 proven. 1190 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-09-23 21:22:33,297 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:33,297 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-09-23 21:22:33,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-09-23 21:22:33,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-09-23 21:22:33,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-09-23 21:22:33,299 INFO L87 Difference]: Start difference. First operand 162 states and 207 transitions. Second operand 37 states. [2018-09-23 21:22:33,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:33,525 INFO L93 Difference]: Finished difference Result 257 states and 348 transitions. [2018-09-23 21:22:33,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-23 21:22:33,525 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 161 [2018-09-23 21:22:33,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:33,527 INFO L225 Difference]: With dead ends: 257 [2018-09-23 21:22:33,527 INFO L226 Difference]: Without dead ends: 164 [2018-09-23 21:22:33,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-09-23 21:22:33,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-09-23 21:22:33,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-09-23 21:22:33,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-09-23 21:22:33,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 209 transitions. [2018-09-23 21:22:33,534 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 209 transitions. Word has length 161 [2018-09-23 21:22:33,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:33,534 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 209 transitions. [2018-09-23 21:22:33,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-09-23 21:22:33,534 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 209 transitions. [2018-09-23 21:22:33,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-09-23 21:22:33,535 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:33,535 INFO L375 BasicCegarLoop]: trace histogram [80, 45, 35, 1, 1, 1] [2018-09-23 21:22:33,536 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:33,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:33,536 INFO L82 PathProgramCache]: Analyzing trace with hash -990129151, now seen corresponding path program 34 times [2018-09-23 21:22:33,536 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:33,536 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:33,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:33,537 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:33,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:34,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 3204 proven. 1260 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-09-23 21:22:34,614 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:34,614 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 21:22:34,622 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-23 21:22:34,679 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-23 21:22:34,680 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:34,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:34,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 3204 proven. 1260 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-09-23 21:22:34,727 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:34,728 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-09-23 21:22:34,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-09-23 21:22:34,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-09-23 21:22:34,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-09-23 21:22:34,729 INFO L87 Difference]: Start difference. First operand 164 states and 209 transitions. Second operand 38 states. [2018-09-23 21:22:34,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:34,838 INFO L93 Difference]: Finished difference Result 259 states and 350 transitions. [2018-09-23 21:22:34,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-23 21:22:34,839 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 163 [2018-09-23 21:22:34,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:34,840 INFO L225 Difference]: With dead ends: 259 [2018-09-23 21:22:34,840 INFO L226 Difference]: Without dead ends: 166 [2018-09-23 21:22:34,841 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-09-23 21:22:34,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-09-23 21:22:34,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-09-23 21:22:34,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-09-23 21:22:34,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 211 transitions. [2018-09-23 21:22:34,847 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 211 transitions. Word has length 163 [2018-09-23 21:22:34,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:34,847 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 211 transitions. [2018-09-23 21:22:34,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-09-23 21:22:34,848 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 211 transitions. [2018-09-23 21:22:34,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-09-23 21:22:34,848 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:34,849 INFO L375 BasicCegarLoop]: trace histogram [81, 45, 36, 1, 1, 1] [2018-09-23 21:22:34,849 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:34,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:34,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1442893977, now seen corresponding path program 35 times [2018-09-23 21:22:34,849 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:34,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:34,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:34,850 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:34,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:37,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 3293 proven. 1332 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-09-23 21:22:37,241 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:37,241 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 21:22:37,250 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-23 21:22:37,407 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 82 check-sat command(s) [2018-09-23 21:22:37,407 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:37,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:37,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 3293 proven. 1332 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-09-23 21:22:37,454 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:37,454 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-09-23 21:22:37,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-09-23 21:22:37,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-09-23 21:22:37,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-09-23 21:22:37,455 INFO L87 Difference]: Start difference. First operand 166 states and 211 transitions. Second operand 39 states. [2018-09-23 21:22:37,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:37,647 INFO L93 Difference]: Finished difference Result 261 states and 352 transitions. [2018-09-23 21:22:37,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-23 21:22:37,648 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 165 [2018-09-23 21:22:37,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:37,650 INFO L225 Difference]: With dead ends: 261 [2018-09-23 21:22:37,650 INFO L226 Difference]: Without dead ends: 168 [2018-09-23 21:22:37,651 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-09-23 21:22:37,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-09-23 21:22:37,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-09-23 21:22:37,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-09-23 21:22:37,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 213 transitions. [2018-09-23 21:22:37,656 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 213 transitions. Word has length 165 [2018-09-23 21:22:37,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:37,657 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 213 transitions. [2018-09-23 21:22:37,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-09-23 21:22:37,657 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 213 transitions. [2018-09-23 21:22:37,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-09-23 21:22:37,658 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:37,658 INFO L375 BasicCegarLoop]: trace histogram [82, 45, 37, 1, 1, 1] [2018-09-23 21:22:37,658 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:37,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:37,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1536772429, now seen corresponding path program 36 times [2018-09-23 21:22:37,659 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:37,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:37,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:37,659 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:37,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:38,378 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 3382 proven. 1406 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-09-23 21:22:38,378 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:38,378 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 21:22:38,386 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-23 21:22:38,649 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 82 check-sat command(s) [2018-09-23 21:22:38,649 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:38,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:38,683 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 3382 proven. 1406 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-09-23 21:22:38,714 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:38,715 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-09-23 21:22:38,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-23 21:22:38,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-23 21:22:38,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-09-23 21:22:38,716 INFO L87 Difference]: Start difference. First operand 168 states and 213 transitions. Second operand 40 states. [2018-09-23 21:22:39,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:39,899 INFO L93 Difference]: Finished difference Result 263 states and 354 transitions. [2018-09-23 21:22:39,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-23 21:22:39,899 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 167 [2018-09-23 21:22:39,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:39,901 INFO L225 Difference]: With dead ends: 263 [2018-09-23 21:22:39,901 INFO L226 Difference]: Without dead ends: 170 [2018-09-23 21:22:39,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-09-23 21:22:39,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-09-23 21:22:39,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-09-23 21:22:39,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-09-23 21:22:39,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 215 transitions. [2018-09-23 21:22:39,908 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 215 transitions. Word has length 167 [2018-09-23 21:22:39,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:39,908 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 215 transitions. [2018-09-23 21:22:39,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-23 21:22:39,908 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 215 transitions. [2018-09-23 21:22:39,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-09-23 21:22:39,909 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:39,909 INFO L375 BasicCegarLoop]: trace histogram [83, 45, 38, 1, 1, 1] [2018-09-23 21:22:39,909 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:39,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:39,910 INFO L82 PathProgramCache]: Analyzing trace with hash 253002163, now seen corresponding path program 37 times [2018-09-23 21:22:39,910 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:39,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:39,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:39,911 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:39,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:41,020 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 3471 proven. 1482 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-09-23 21:22:41,020 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:41,020 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 21:22:41,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 21:22:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:41,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:41,114 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 3471 proven. 1482 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-09-23 21:22:41,133 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:41,134 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-09-23 21:22:41,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-09-23 21:22:41,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-09-23 21:22:41,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-09-23 21:22:41,135 INFO L87 Difference]: Start difference. First operand 170 states and 215 transitions. Second operand 41 states. [2018-09-23 21:22:41,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:41,343 INFO L93 Difference]: Finished difference Result 265 states and 356 transitions. [2018-09-23 21:22:41,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-23 21:22:41,343 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 169 [2018-09-23 21:22:41,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:41,345 INFO L225 Difference]: With dead ends: 265 [2018-09-23 21:22:41,345 INFO L226 Difference]: Without dead ends: 172 [2018-09-23 21:22:41,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-09-23 21:22:41,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-09-23 21:22:41,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-09-23 21:22:41,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-09-23 21:22:41,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 217 transitions. [2018-09-23 21:22:41,352 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 217 transitions. Word has length 169 [2018-09-23 21:22:41,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:41,352 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 217 transitions. [2018-09-23 21:22:41,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-09-23 21:22:41,352 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 217 transitions. [2018-09-23 21:22:41,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-09-23 21:22:41,353 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:41,353 INFO L375 BasicCegarLoop]: trace histogram [84, 45, 39, 1, 1, 1] [2018-09-23 21:22:41,354 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:41,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:41,354 INFO L82 PathProgramCache]: Analyzing trace with hash -794609511, now seen corresponding path program 38 times [2018-09-23 21:22:41,354 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:41,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:41,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:41,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 21:22:41,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 3560 proven. 1560 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-09-23 21:22:42,608 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:42,608 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 21:22:42,617 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-23 21:22:42,674 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-23 21:22:42,674 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:42,678 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:42,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 3560 proven. 1560 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-09-23 21:22:42,742 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:42,742 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-09-23 21:22:42,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-09-23 21:22:42,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-09-23 21:22:42,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-09-23 21:22:42,743 INFO L87 Difference]: Start difference. First operand 172 states and 217 transitions. Second operand 42 states. [2018-09-23 21:22:43,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:43,024 INFO L93 Difference]: Finished difference Result 267 states and 358 transitions. [2018-09-23 21:22:43,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-23 21:22:43,025 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 171 [2018-09-23 21:22:43,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:43,026 INFO L225 Difference]: With dead ends: 267 [2018-09-23 21:22:43,026 INFO L226 Difference]: Without dead ends: 174 [2018-09-23 21:22:43,027 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-09-23 21:22:43,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-09-23 21:22:43,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-09-23 21:22:43,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-09-23 21:22:43,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 219 transitions. [2018-09-23 21:22:43,033 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 219 transitions. Word has length 171 [2018-09-23 21:22:43,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:43,033 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 219 transitions. [2018-09-23 21:22:43,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-09-23 21:22:43,033 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 219 transitions. [2018-09-23 21:22:43,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-09-23 21:22:43,034 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:43,034 INFO L375 BasicCegarLoop]: trace histogram [85, 45, 40, 1, 1, 1] [2018-09-23 21:22:43,034 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:43,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:43,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1767886335, now seen corresponding path program 39 times [2018-09-23 21:22:43,034 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:43,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:43,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:43,035 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:43,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:44,263 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 3649 proven. 1640 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-09-23 21:22:44,263 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:44,263 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 21:22:44,270 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-23 21:22:44,386 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 83 check-sat command(s) [2018-09-23 21:22:44,386 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:44,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:44,416 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 3649 proven. 1640 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-09-23 21:22:44,437 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:44,437 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-09-23 21:22:44,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-09-23 21:22:44,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-09-23 21:22:44,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-09-23 21:22:44,438 INFO L87 Difference]: Start difference. First operand 174 states and 219 transitions. Second operand 43 states. [2018-09-23 21:22:44,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:44,649 INFO L93 Difference]: Finished difference Result 269 states and 360 transitions. [2018-09-23 21:22:44,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-23 21:22:44,650 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 173 [2018-09-23 21:22:44,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:44,651 INFO L225 Difference]: With dead ends: 269 [2018-09-23 21:22:44,651 INFO L226 Difference]: Without dead ends: 176 [2018-09-23 21:22:44,652 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-09-23 21:22:44,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-09-23 21:22:44,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-09-23 21:22:44,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-09-23 21:22:44,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 221 transitions. [2018-09-23 21:22:44,657 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 221 transitions. Word has length 173 [2018-09-23 21:22:44,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:44,658 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 221 transitions. [2018-09-23 21:22:44,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-09-23 21:22:44,658 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 221 transitions. [2018-09-23 21:22:44,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-09-23 21:22:44,659 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:44,659 INFO L375 BasicCegarLoop]: trace histogram [86, 45, 41, 1, 1, 1] [2018-09-23 21:22:44,659 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:44,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:44,660 INFO L82 PathProgramCache]: Analyzing trace with hash -984833563, now seen corresponding path program 40 times [2018-09-23 21:22:44,660 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:44,660 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:44,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:44,661 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:44,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 3738 proven. 1722 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-09-23 21:22:45,512 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:45,513 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 21:22:45,519 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-23 21:22:45,579 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-23 21:22:45,579 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:45,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:45,605 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 3738 proven. 1722 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-09-23 21:22:45,626 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:45,626 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-09-23 21:22:45,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-23 21:22:45,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-23 21:22:45,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-09-23 21:22:45,627 INFO L87 Difference]: Start difference. First operand 176 states and 221 transitions. Second operand 44 states. [2018-09-23 21:22:45,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:45,827 INFO L93 Difference]: Finished difference Result 271 states and 362 transitions. [2018-09-23 21:22:45,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-23 21:22:45,827 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 175 [2018-09-23 21:22:45,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:45,828 INFO L225 Difference]: With dead ends: 271 [2018-09-23 21:22:45,828 INFO L226 Difference]: Without dead ends: 178 [2018-09-23 21:22:45,829 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-09-23 21:22:45,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-09-23 21:22:45,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-09-23 21:22:45,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-09-23 21:22:45,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 223 transitions. [2018-09-23 21:22:45,833 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 223 transitions. Word has length 175 [2018-09-23 21:22:45,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:45,833 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 223 transitions. [2018-09-23 21:22:45,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-23 21:22:45,833 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 223 transitions. [2018-09-23 21:22:45,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-09-23 21:22:45,834 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:45,834 INFO L375 BasicCegarLoop]: trace histogram [87, 45, 42, 1, 1, 1] [2018-09-23 21:22:45,834 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:45,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:45,835 INFO L82 PathProgramCache]: Analyzing trace with hash -648801205, now seen corresponding path program 41 times [2018-09-23 21:22:45,835 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:45,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:45,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:45,835 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:45,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:47,211 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 3827 proven. 1806 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-09-23 21:22:47,212 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:47,212 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 21:22:47,219 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-23 21:22:47,346 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 88 check-sat command(s) [2018-09-23 21:22:47,347 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:47,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:47,400 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 3827 proven. 1806 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-09-23 21:22:47,421 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:47,421 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-09-23 21:22:47,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-09-23 21:22:47,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-09-23 21:22:47,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-09-23 21:22:47,422 INFO L87 Difference]: Start difference. First operand 178 states and 223 transitions. Second operand 45 states. [2018-09-23 21:22:47,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:47,862 INFO L93 Difference]: Finished difference Result 273 states and 364 transitions. [2018-09-23 21:22:47,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-23 21:22:47,862 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 177 [2018-09-23 21:22:47,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:47,864 INFO L225 Difference]: With dead ends: 273 [2018-09-23 21:22:47,864 INFO L226 Difference]: Without dead ends: 180 [2018-09-23 21:22:47,866 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-09-23 21:22:47,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-09-23 21:22:47,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-09-23 21:22:47,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-09-23 21:22:47,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 225 transitions. [2018-09-23 21:22:47,872 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 225 transitions. Word has length 177 [2018-09-23 21:22:47,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:47,872 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 225 transitions. [2018-09-23 21:22:47,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-09-23 21:22:47,872 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 225 transitions. [2018-09-23 21:22:47,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-09-23 21:22:47,873 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:47,873 INFO L375 BasicCegarLoop]: trace histogram [88, 45, 43, 1, 1, 1] [2018-09-23 21:22:47,874 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:47,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:47,874 INFO L82 PathProgramCache]: Analyzing trace with hash 155747633, now seen corresponding path program 42 times [2018-09-23 21:22:47,874 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:47,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:47,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:47,875 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:47,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:48,683 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 3916 proven. 1892 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-09-23 21:22:48,683 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:48,683 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 21:22:48,691 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-23 21:22:48,985 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 88 check-sat command(s) [2018-09-23 21:22:48,985 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:48,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:51,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 3913 proven. 2025 refuted. 0 times theorem prover too weak. 1806 trivial. 0 not checked. [2018-09-23 21:22:51,302 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:51,302 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 48] total 92 [2018-09-23 21:22:51,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-09-23 21:22:51,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-09-23 21:22:51,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-09-23 21:22:51,304 INFO L87 Difference]: Start difference. First operand 180 states and 225 transitions. Second operand 92 states. [2018-09-23 21:22:52,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:52,289 INFO L93 Difference]: Finished difference Result 278 states and 372 transitions. [2018-09-23 21:22:52,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-09-23 21:22:52,289 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 179 [2018-09-23 21:22:52,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:52,290 INFO L225 Difference]: With dead ends: 278 [2018-09-23 21:22:52,290 INFO L226 Difference]: Without dead ends: 185 [2018-09-23 21:22:52,292 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-09-23 21:22:52,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-09-23 21:22:52,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2018-09-23 21:22:52,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-09-23 21:22:52,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 230 transitions. [2018-09-23 21:22:52,298 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 230 transitions. Word has length 179 [2018-09-23 21:22:52,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:52,298 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 230 transitions. [2018-09-23 21:22:52,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-09-23 21:22:52,299 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 230 transitions. [2018-09-23 21:22:52,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-09-23 21:22:52,300 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:52,300 INFO L375 BasicCegarLoop]: trace histogram [90, 46, 44, 1, 1, 1] [2018-09-23 21:22:52,300 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:52,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:52,300 INFO L82 PathProgramCache]: Analyzing trace with hash 639671167, now seen corresponding path program 43 times [2018-09-23 21:22:52,301 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:52,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:52,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:52,301 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:52,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:54,195 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 4095 proven. 1980 refuted. 0 times theorem prover too weak. 2025 trivial. 0 not checked. [2018-09-23 21:22:54,195 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:54,195 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 21:22:54,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 21:22:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:54,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:54,302 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 4095 proven. 1980 refuted. 0 times theorem prover too weak. 2025 trivial. 0 not checked. [2018-09-23 21:22:54,332 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:54,332 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-09-23 21:22:54,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-09-23 21:22:54,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-09-23 21:22:54,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-09-23 21:22:54,333 INFO L87 Difference]: Start difference. First operand 184 states and 230 transitions. Second operand 47 states. [2018-09-23 21:22:54,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:54,518 INFO L93 Difference]: Finished difference Result 281 states and 374 transitions. [2018-09-23 21:22:54,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-23 21:22:54,518 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 183 [2018-09-23 21:22:54,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:54,519 INFO L225 Difference]: With dead ends: 281 [2018-09-23 21:22:54,519 INFO L226 Difference]: Without dead ends: 186 [2018-09-23 21:22:54,519 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-09-23 21:22:54,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-09-23 21:22:54,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-09-23 21:22:54,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-09-23 21:22:54,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 232 transitions. [2018-09-23 21:22:54,524 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 232 transitions. Word has length 183 [2018-09-23 21:22:54,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:54,524 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 232 transitions. [2018-09-23 21:22:54,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-09-23 21:22:54,524 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 232 transitions. [2018-09-23 21:22:54,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-09-23 21:22:54,525 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:54,525 INFO L375 BasicCegarLoop]: trace histogram [91, 46, 45, 1, 1, 1] [2018-09-23 21:22:54,525 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:54,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:54,525 INFO L82 PathProgramCache]: Analyzing trace with hash -807778331, now seen corresponding path program 44 times [2018-09-23 21:22:54,525 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:54,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:54,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:54,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 21:22:54,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:55,449 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 4186 proven. 2070 refuted. 0 times theorem prover too weak. 2025 trivial. 0 not checked. [2018-09-23 21:22:55,449 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:55,449 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 21:22:55,457 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-23 21:22:55,525 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-23 21:22:55,526 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:55,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:22:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 4186 proven. 2070 refuted. 0 times theorem prover too weak. 2025 trivial. 0 not checked. [2018-09-23 21:22:55,575 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:22:55,576 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-09-23 21:22:55,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-23 21:22:55,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-23 21:22:55,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-09-23 21:22:55,577 INFO L87 Difference]: Start difference. First operand 186 states and 232 transitions. Second operand 48 states. [2018-09-23 21:22:57,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:22:57,066 INFO L93 Difference]: Finished difference Result 283 states and 376 transitions. [2018-09-23 21:22:57,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-23 21:22:57,066 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 185 [2018-09-23 21:22:57,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:22:57,067 INFO L225 Difference]: With dead ends: 283 [2018-09-23 21:22:57,067 INFO L226 Difference]: Without dead ends: 188 [2018-09-23 21:22:57,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-09-23 21:22:57,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-09-23 21:22:57,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-09-23 21:22:57,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-09-23 21:22:57,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 234 transitions. [2018-09-23 21:22:57,072 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 234 transitions. Word has length 185 [2018-09-23 21:22:57,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:22:57,072 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 234 transitions. [2018-09-23 21:22:57,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-23 21:22:57,073 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 234 transitions. [2018-09-23 21:22:57,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-09-23 21:22:57,073 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:22:57,073 INFO L375 BasicCegarLoop]: trace histogram [92, 46, 46, 1, 1, 1] [2018-09-23 21:22:57,074 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:22:57,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:22:57,074 INFO L82 PathProgramCache]: Analyzing trace with hash -237342005, now seen corresponding path program 45 times [2018-09-23 21:22:57,074 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:22:57,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:22:57,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:57,075 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:22:57,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:22:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:22:58,085 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 4277 proven. 2162 refuted. 0 times theorem prover too weak. 2025 trivial. 0 not checked. [2018-09-23 21:22:58,086 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:22:58,086 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 21:22:58,094 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-23 21:22:58,366 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 93 check-sat command(s) [2018-09-23 21:22:58,366 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:22:58,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:23:00,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 0 proven. 8464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 21:23:00,641 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:23:00,641 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 94] total 94 [2018-09-23 21:23:00,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-09-23 21:23:00,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-09-23 21:23:00,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-09-23 21:23:00,643 INFO L87 Difference]: Start difference. First operand 188 states and 234 transitions. Second operand 95 states. [2018-09-23 21:23:01,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:23:01,690 INFO L93 Difference]: Finished difference Result 291 states and 387 transitions. [2018-09-23 21:23:01,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-09-23 21:23:01,691 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 187 [2018-09-23 21:23:01,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:23:01,692 INFO L225 Difference]: With dead ends: 291 [2018-09-23 21:23:01,693 INFO L226 Difference]: Without dead ends: 196 [2018-09-23 21:23:01,694 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-09-23 21:23:01,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-09-23 21:23:01,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-09-23 21:23:01,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-09-23 21:23:01,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 242 transitions. [2018-09-23 21:23:01,700 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 242 transitions. Word has length 187 [2018-09-23 21:23:01,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:23:01,701 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 242 transitions. [2018-09-23 21:23:01,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-09-23 21:23:01,701 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 242 transitions. [2018-09-23 21:23:01,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-09-23 21:23:01,702 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:23:01,702 INFO L375 BasicCegarLoop]: trace histogram [96, 50, 46, 1, 1, 1] [2018-09-23 21:23:01,702 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:23:01,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:23:01,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1824288925, now seen corresponding path program 46 times [2018-09-23 21:23:01,702 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:23:01,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:23:01,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:23:01,703 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:23:01,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:23:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:23:03,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9216 backedges. 4656 proven. 2304 refuted. 0 times theorem prover too weak. 2256 trivial. 0 not checked. [2018-09-23 21:23:03,080 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:23:03,081 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 21:23:03,087 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-23 21:23:03,157 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-23 21:23:03,158 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:23:03,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:23:04,387 INFO L134 CoverageAnalysis]: Checked inductivity of 9216 backedges. 0 proven. 9216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 21:23:04,407 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:23:04,407 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 98] total 101 [2018-09-23 21:23:04,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-09-23 21:23:04,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-09-23 21:23:04,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-09-23 21:23:04,409 INFO L87 Difference]: Start difference. First operand 196 states and 242 transitions. Second operand 101 states. [2018-09-23 21:23:05,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:23:05,626 INFO L93 Difference]: Finished difference Result 205 states and 257 transitions. [2018-09-23 21:23:05,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-09-23 21:23:05,626 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 195 [2018-09-23 21:23:05,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:23:05,628 INFO L225 Difference]: With dead ends: 205 [2018-09-23 21:23:05,628 INFO L226 Difference]: Without dead ends: 203 [2018-09-23 21:23:05,629 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4800 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-09-23 21:23:05,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-09-23 21:23:05,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2018-09-23 21:23:05,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-09-23 21:23:05,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 251 transitions. [2018-09-23 21:23:05,637 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 251 transitions. Word has length 195 [2018-09-23 21:23:05,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:23:05,638 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 251 transitions. [2018-09-23 21:23:05,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-09-23 21:23:05,638 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 251 transitions. [2018-09-23 21:23:05,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-09-23 21:23:05,640 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:23:05,640 INFO L375 BasicCegarLoop]: trace histogram [99, 50, 49, 1, 1, 1] [2018-09-23 21:23:05,640 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:23:05,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:23:05,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1260892901, now seen corresponding path program 47 times [2018-09-23 21:23:05,641 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:23:05,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:23:05,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:23:05,642 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:23:05,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:23:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:23:06,762 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 4950 proven. 2401 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2018-09-23 21:23:06,763 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:23:06,763 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 21:23:06,770 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-23 21:23:06,925 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 100 check-sat command(s) [2018-09-23 21:23:06,925 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:23:06,929 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:23:06,968 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 4950 proven. 2401 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2018-09-23 21:23:06,998 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:23:06,998 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-09-23 21:23:06,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-23 21:23:06,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-23 21:23:06,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-09-23 21:23:07,000 INFO L87 Difference]: Start difference. First operand 202 states and 251 transitions. Second operand 52 states. [2018-09-23 21:23:07,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:23:07,568 INFO L93 Difference]: Finished difference Result 206 states and 256 transitions. [2018-09-23 21:23:07,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-23 21:23:07,568 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 201 [2018-09-23 21:23:07,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:23:07,570 INFO L225 Difference]: With dead ends: 206 [2018-09-23 21:23:07,570 INFO L226 Difference]: Without dead ends: 204 [2018-09-23 21:23:07,571 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-09-23 21:23:07,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-09-23 21:23:07,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-09-23 21:23:07,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-09-23 21:23:07,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 254 transitions. [2018-09-23 21:23:07,578 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 254 transitions. Word has length 201 [2018-09-23 21:23:07,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:23:07,579 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 254 transitions. [2018-09-23 21:23:07,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-23 21:23:07,579 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 254 transitions. [2018-09-23 21:23:07,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-09-23 21:23:07,580 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:23:07,580 INFO L375 BasicCegarLoop]: trace histogram [100, 50, 50, 1, 1, 1] [2018-09-23 21:23:07,581 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:23:07,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:23:07,581 INFO L82 PathProgramCache]: Analyzing trace with hash -537361661, now seen corresponding path program 48 times [2018-09-23 21:23:07,581 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:23:07,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:23:07,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:23:07,582 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:23:07,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:23:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:23:09,698 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2018-09-23 21:23:09,698 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 21:23:09,698 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 21:23:09,706 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-23 21:23:09,870 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 100 check-sat command(s) [2018-09-23 21:23:09,870 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 21:23:09,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 21:23:10,068 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2018-09-23 21:23:10,089 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 21:23:10,089 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-09-23 21:23:10,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-09-23 21:23:10,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-09-23 21:23:10,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=2653, Unknown=0, NotChecked=0, Total=2756 [2018-09-23 21:23:10,090 INFO L87 Difference]: Start difference. First operand 204 states and 254 transitions. Second operand 53 states. [2018-09-23 21:23:12,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:23:12,665 INFO L93 Difference]: Finished difference Result 2857 states and 4232 transitions. [2018-09-23 21:23:12,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-23 21:23:12,666 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 203 [2018-09-23 21:23:12,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:23:12,676 INFO L225 Difference]: With dead ends: 2857 [2018-09-23 21:23:12,676 INFO L226 Difference]: Without dead ends: 2855 [2018-09-23 21:23:12,677 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 201 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=103, Invalid=2653, Unknown=0, NotChecked=0, Total=2756 [2018-09-23 21:23:12,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2018-09-23 21:23:12,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 206. [2018-09-23 21:23:12,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-09-23 21:23:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 257 transitions. [2018-09-23 21:23:12,822 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 257 transitions. Word has length 203 [2018-09-23 21:23:12,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:23:12,823 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 257 transitions. [2018-09-23 21:23:12,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-09-23 21:23:12,823 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 257 transitions. [2018-09-23 21:23:12,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-09-23 21:23:12,824 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 21:23:12,824 INFO L375 BasicCegarLoop]: trace histogram [101, 51, 50, 1, 1, 1] [2018-09-23 21:23:12,825 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 21:23:12,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 21:23:12,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1008541973, now seen corresponding path program 49 times [2018-09-23 21:23:12,825 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 21:23:12,826 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 21:23:12,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:23:12,827 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 21:23:12,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 21:23:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 21:23:14,955 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 7651 proven. 0 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2018-09-23 21:23:14,956 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-23 21:23:14,956 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2018-09-23 21:23:14,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-23 21:23:14,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-23 21:23:14,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-09-23 21:23:14,957 INFO L87 Difference]: Start difference. First operand 206 states and 257 transitions. Second operand 52 states. [2018-09-23 21:23:15,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 21:23:15,435 INFO L93 Difference]: Finished difference Result 305 states and 405 transitions. [2018-09-23 21:23:15,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-23 21:23:15,436 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 205 [2018-09-23 21:23:15,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 21:23:15,437 INFO L225 Difference]: With dead ends: 305 [2018-09-23 21:23:15,437 INFO L226 Difference]: Without dead ends: 0 [2018-09-23 21:23:15,438 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-09-23 21:23:15,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-23 21:23:15,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-23 21:23:15,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-23 21:23:15,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-23 21:23:15,439 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 205 [2018-09-23 21:23:15,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 21:23:15,439 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-23 21:23:15,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-23 21:23:15,439 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-23 21:23:15,439 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-23 21:23:15,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-23 21:23:16,178 WARN L178 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 1827 DAG size of output: 400 [2018-09-23 21:23:16,851 WARN L178 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 1832 DAG size of output: 407 [2018-09-23 21:23:24,425 WARN L178 SmtUtils]: Spent 7.57 s on a formula simplification. DAG size of input: 400 DAG size of output: 351 [2018-09-23 21:23:27,168 WARN L178 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 407 DAG size of output: 357 [2018-09-23 21:23:27,175 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 44) no Hoare annotation was computed. [2018-09-23 21:23:27,176 INFO L422 ceAbstractionStarter]: At program point L30(lines 30 42) the Hoare annotation is: false [2018-09-23 21:23:27,176 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 44) no Hoare annotation was computed. [2018-09-23 21:23:27,176 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 44) no Hoare annotation was computed. [2018-09-23 21:23:27,177 INFO L422 ceAbstractionStarter]: At program point L22(lines 22 37) the Hoare annotation is: (or (and (and (<= ULTIMATE.start_main_~y~4 96) (<= 96 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 96)) (<= 96 ULTIMATE.start_main_~x~4)) (and (<= 79 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~y~4 79) (<= 79 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 79))) (and (and (<= ULTIMATE.start_main_~y~4 97) (<= ULTIMATE.start_main_~x~4 97) (<= 97 ULTIMATE.start_main_~y~4)) (<= 97 ULTIMATE.start_main_~x~4)) (and (and (<= 95 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 95) (<= ULTIMATE.start_main_~x~4 95)) (<= 95 ULTIMATE.start_main_~x~4)) (and (and (<= 91 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 91) (<= ULTIMATE.start_main_~y~4 91)) (<= 91 ULTIMATE.start_main_~x~4)) (and (and (<= ULTIMATE.start_main_~x~4 72) (<= 72 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 72)) (<= 72 ULTIMATE.start_main_~x~4)) (and (and (<= ULTIMATE.start_main_~x~4 62) (<= 62 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 62)) (<= 62 ULTIMATE.start_main_~x~4)) (and (<= 54 ULTIMATE.start_main_~x~4) (and (<= 54 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 54) (<= ULTIMATE.start_main_~y~4 54))) (and (<= 60 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~y~4 60) (<= ULTIMATE.start_main_~x~4 60) (<= 60 ULTIMATE.start_main_~y~4))) (and (<= 98 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~x~4 98) (<= ULTIMATE.start_main_~y~4 98) (<= 98 ULTIMATE.start_main_~y~4))) (and (and (<= 88 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 88) (<= ULTIMATE.start_main_~x~4 88)) (<= 88 ULTIMATE.start_main_~x~4)) (and (and (<= ULTIMATE.start_main_~x~4 73) (<= 73 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 73)) (<= 73 ULTIMATE.start_main_~x~4)) (and (<= 64 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~x~4 64) (<= 64 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 64))) (and (and (<= ULTIMATE.start_main_~x~4 76) (<= 76 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 76)) (<= 76 ULTIMATE.start_main_~x~4)) (and (and (<= ULTIMATE.start_main_~y~4 84) (<= ULTIMATE.start_main_~x~4 84) (<= 84 ULTIMATE.start_main_~y~4)) (<= 84 ULTIMATE.start_main_~x~4)) (and (and (<= ULTIMATE.start_main_~y~4 85) (<= 85 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 85)) (<= 85 ULTIMATE.start_main_~x~4)) (and (and (<= ULTIMATE.start_main_~x~4 61) (<= 61 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 61)) (<= 61 ULTIMATE.start_main_~x~4)) (and (and (<= ULTIMATE.start_main_~x~4 59) (<= ULTIMATE.start_main_~y~4 59) (<= 59 ULTIMATE.start_main_~y~4)) (<= 59 ULTIMATE.start_main_~x~4)) (and (<= 69 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~y~4 69) (<= ULTIMATE.start_main_~x~4 69) (<= 69 ULTIMATE.start_main_~y~4))) (and (and (<= 55 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 55) (<= ULTIMATE.start_main_~x~4 55)) (<= 55 ULTIMATE.start_main_~x~4)) (and (and (<= 99 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 99) (<= ULTIMATE.start_main_~x~4 99)) (<= 99 ULTIMATE.start_main_~x~4)) (and (<= 53 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~x~4 53) (<= ULTIMATE.start_main_~y~4 53) (<= 53 ULTIMATE.start_main_~y~4))) (and (<= 77 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~x~4 77) (<= ULTIMATE.start_main_~y~4 77) (<= 77 ULTIMATE.start_main_~y~4))) (and (<= 89 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~y~4 89) (<= ULTIMATE.start_main_~x~4 89) (<= 89 ULTIMATE.start_main_~y~4))) (and (<= 94 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~y~4 94) (<= ULTIMATE.start_main_~x~4 94) (<= 94 ULTIMATE.start_main_~y~4))) (and (and (<= ULTIMATE.start_main_~y~4 93) (<= 93 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 93)) (<= 93 ULTIMATE.start_main_~x~4)) (and (<= 68 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~x~4 68) (<= ULTIMATE.start_main_~y~4 68) (<= 68 ULTIMATE.start_main_~y~4))) (and (and (<= ULTIMATE.start_main_~y~4 81) (<= ULTIMATE.start_main_~x~4 81) (<= 81 ULTIMATE.start_main_~y~4)) (<= 81 ULTIMATE.start_main_~x~4)) (and (and (<= 57 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 57) (<= ULTIMATE.start_main_~x~4 57)) (<= 57 ULTIMATE.start_main_~x~4)) (and (and (<= ULTIMATE.start_main_~x~4 82) (<= 82 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 82)) (<= 82 ULTIMATE.start_main_~x~4)) (and (and (<= ULTIMATE.start_main_~y~4 58) (<= ULTIMATE.start_main_~x~4 58) (<= 58 ULTIMATE.start_main_~y~4)) (<= 58 ULTIMATE.start_main_~x~4)) (and (<= 78 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~x~4 78) (<= 78 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 78))) (and (and (<= ULTIMATE.start_main_~y~4 65) (<= ULTIMATE.start_main_~x~4 65) (<= 65 ULTIMATE.start_main_~y~4)) (<= 65 ULTIMATE.start_main_~x~4)) (and (and (<= ULTIMATE.start_main_~x~4 90) (<= 90 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 90)) (<= 90 ULTIMATE.start_main_~x~4)) (and (<= 63 ULTIMATE.start_main_~x~4) (and (<= 63 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 63) (<= ULTIMATE.start_main_~x~4 63))) (and (<= 51 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~y~4 51) (<= 51 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 51))) (and (<= 52 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~x~4 52) (<= 52 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 52))) (and (and (<= 74 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 74) (<= ULTIMATE.start_main_~y~4 74)) (<= 74 ULTIMATE.start_main_~x~4)) (and (<= 86 ULTIMATE.start_main_~x~4) (and (<= 86 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 86) (<= ULTIMATE.start_main_~x~4 86))) (and (<= 56 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~y~4 56) (<= ULTIMATE.start_main_~x~4 56) (<= 56 ULTIMATE.start_main_~y~4))) (and (<= 67 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~y~4 67) (<= 67 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 67))) (and (<= 83 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~y~4 83) (<= 83 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 83))) (and (and (<= ULTIMATE.start_main_~x~4 87) (<= 87 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 87)) (<= 87 ULTIMATE.start_main_~x~4)) (and (<= 66 ULTIMATE.start_main_~x~4) (and (<= 66 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 66) (<= ULTIMATE.start_main_~x~4 66))) (and (and (<= 80 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 80) (<= ULTIMATE.start_main_~y~4 80)) (<= 80 ULTIMATE.start_main_~x~4)) (and (<= 70 ULTIMATE.start_main_~x~4) (and (<= 70 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 70) (<= ULTIMATE.start_main_~y~4 70))) (and (<= 71 ULTIMATE.start_main_~x~4) (and (<= 71 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 71) (<= ULTIMATE.start_main_~y~4 71))) (and (and (<= ULTIMATE.start_main_~x~4 75) (<= ULTIMATE.start_main_~y~4 75) (<= 75 ULTIMATE.start_main_~y~4)) (<= 75 ULTIMATE.start_main_~x~4)) (and (<= ULTIMATE.start_main_~x~4 50) (<= ULTIMATE.start_main_~y~4 50) (<= 50 ULTIMATE.start_main_~y~4)) (and (and (<= ULTIMATE.start_main_~x~4 92) (<= 92 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 92)) (<= 92 ULTIMATE.start_main_~x~4))) [2018-09-23 21:23:27,179 INFO L422 ceAbstractionStarter]: At program point L41(lines 15 41) the Hoare annotation is: (or (and (and (<= ULTIMATE.start_main_~y~4 96) (<= 96 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 96)) (<= 96 ULTIMATE.start_main_~x~4)) (and (<= 79 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~y~4 79) (<= 79 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 79))) (and (and (<= ULTIMATE.start_main_~y~4 97) (<= ULTIMATE.start_main_~x~4 97) (<= 97 ULTIMATE.start_main_~y~4)) (<= 97 ULTIMATE.start_main_~x~4)) (and (and (<= 95 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 95) (<= ULTIMATE.start_main_~x~4 95)) (<= 95 ULTIMATE.start_main_~x~4)) (and (and (<= 91 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 91) (<= ULTIMATE.start_main_~y~4 91)) (<= 91 ULTIMATE.start_main_~x~4)) (and (and (<= ULTIMATE.start_main_~x~4 72) (<= 72 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 72)) (<= 72 ULTIMATE.start_main_~x~4)) (and (and (<= ULTIMATE.start_main_~x~4 62) (<= 62 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 62)) (<= 62 ULTIMATE.start_main_~x~4)) (and (<= 54 ULTIMATE.start_main_~x~4) (and (<= 54 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 54) (<= ULTIMATE.start_main_~y~4 54))) (and (<= 60 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~y~4 60) (<= ULTIMATE.start_main_~x~4 60) (<= 60 ULTIMATE.start_main_~y~4))) (and (<= 98 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~x~4 98) (<= ULTIMATE.start_main_~y~4 98) (<= 98 ULTIMATE.start_main_~y~4))) (and (and (<= 88 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 88) (<= ULTIMATE.start_main_~x~4 88)) (<= 88 ULTIMATE.start_main_~x~4)) (and (and (<= ULTIMATE.start_main_~x~4 73) (<= 73 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 73)) (<= 73 ULTIMATE.start_main_~x~4)) (and (<= 64 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~x~4 64) (<= 64 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 64))) (and (and (<= ULTIMATE.start_main_~x~4 76) (<= 76 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 76)) (<= 76 ULTIMATE.start_main_~x~4)) (and (and (<= ULTIMATE.start_main_~y~4 84) (<= ULTIMATE.start_main_~x~4 84) (<= 84 ULTIMATE.start_main_~y~4)) (<= 84 ULTIMATE.start_main_~x~4)) (and (and (<= ULTIMATE.start_main_~y~4 85) (<= 85 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 85)) (<= 85 ULTIMATE.start_main_~x~4)) (and (and (<= ULTIMATE.start_main_~x~4 61) (<= 61 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 61)) (<= 61 ULTIMATE.start_main_~x~4)) (and (and (<= ULTIMATE.start_main_~x~4 59) (<= ULTIMATE.start_main_~y~4 59) (<= 59 ULTIMATE.start_main_~y~4)) (<= 59 ULTIMATE.start_main_~x~4)) (and (<= 69 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~y~4 69) (<= ULTIMATE.start_main_~x~4 69) (<= 69 ULTIMATE.start_main_~y~4))) (and (and (<= 55 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 55) (<= ULTIMATE.start_main_~x~4 55)) (<= 55 ULTIMATE.start_main_~x~4)) (and (and (<= 99 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 99) (<= ULTIMATE.start_main_~x~4 99)) (<= 99 ULTIMATE.start_main_~x~4)) (and (<= 53 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~x~4 53) (<= ULTIMATE.start_main_~y~4 53) (<= 53 ULTIMATE.start_main_~y~4))) (and (<= 77 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~x~4 77) (<= ULTIMATE.start_main_~y~4 77) (<= 77 ULTIMATE.start_main_~y~4))) (and (<= 89 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~y~4 89) (<= ULTIMATE.start_main_~x~4 89) (<= 89 ULTIMATE.start_main_~y~4))) (and (<= 94 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~y~4 94) (<= ULTIMATE.start_main_~x~4 94) (<= 94 ULTIMATE.start_main_~y~4))) (and (and (<= ULTIMATE.start_main_~y~4 93) (<= 93 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 93)) (<= 93 ULTIMATE.start_main_~x~4)) (and (<= 68 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~x~4 68) (<= ULTIMATE.start_main_~y~4 68) (<= 68 ULTIMATE.start_main_~y~4))) (and (and (<= ULTIMATE.start_main_~y~4 81) (<= ULTIMATE.start_main_~x~4 81) (<= 81 ULTIMATE.start_main_~y~4)) (<= 81 ULTIMATE.start_main_~x~4)) (and (and (<= 57 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 57) (<= ULTIMATE.start_main_~x~4 57)) (<= 57 ULTIMATE.start_main_~x~4)) (and (and (<= ULTIMATE.start_main_~x~4 82) (<= 82 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 82)) (<= 82 ULTIMATE.start_main_~x~4)) (and (and (<= ULTIMATE.start_main_~y~4 58) (<= ULTIMATE.start_main_~x~4 58) (<= 58 ULTIMATE.start_main_~y~4)) (<= 58 ULTIMATE.start_main_~x~4)) (and (<= 78 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~x~4 78) (<= 78 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 78))) (and (and (<= ULTIMATE.start_main_~y~4 65) (<= ULTIMATE.start_main_~x~4 65) (<= 65 ULTIMATE.start_main_~y~4)) (<= 65 ULTIMATE.start_main_~x~4)) (and (and (<= ULTIMATE.start_main_~x~4 90) (<= 90 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 90)) (<= 90 ULTIMATE.start_main_~x~4)) (and (<= 63 ULTIMATE.start_main_~x~4) (and (<= 63 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 63) (<= ULTIMATE.start_main_~x~4 63))) (and (<= 51 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~y~4 51) (<= 51 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 51))) (and (<= 52 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~x~4 52) (<= 52 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 52))) (and (and (<= 74 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 74) (<= ULTIMATE.start_main_~y~4 74)) (<= 74 ULTIMATE.start_main_~x~4)) (and (<= 86 ULTIMATE.start_main_~x~4) (and (<= 86 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 86) (<= ULTIMATE.start_main_~x~4 86))) (and (<= 56 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~y~4 56) (<= ULTIMATE.start_main_~x~4 56) (<= 56 ULTIMATE.start_main_~y~4))) (and (<= 67 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~y~4 67) (<= 67 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 67))) (and (<= 83 ULTIMATE.start_main_~x~4) (and (<= ULTIMATE.start_main_~y~4 83) (<= 83 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 83))) (and (and (<= ULTIMATE.start_main_~x~4 87) (<= 87 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 87)) (<= 87 ULTIMATE.start_main_~x~4)) (and (<= 66 ULTIMATE.start_main_~x~4) (and (<= 66 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 66) (<= ULTIMATE.start_main_~x~4 66))) (and (and (<= 80 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 80) (<= ULTIMATE.start_main_~y~4 80)) (<= 80 ULTIMATE.start_main_~x~4)) (and (<= 70 ULTIMATE.start_main_~x~4) (and (<= 70 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 70) (<= ULTIMATE.start_main_~y~4 70))) (and (<= 71 ULTIMATE.start_main_~x~4) (and (<= 71 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~x~4 71) (<= ULTIMATE.start_main_~y~4 71))) (and (and (<= ULTIMATE.start_main_~x~4 75) (<= ULTIMATE.start_main_~y~4 75) (<= 75 ULTIMATE.start_main_~y~4)) (<= 75 ULTIMATE.start_main_~x~4)) (and (and (<= ULTIMATE.start_main_~y~4 100) (< 99 ULTIMATE.start_main_~y~4)) (<= 100 ULTIMATE.start_main_~x~4)) (and (<= ULTIMATE.start_main_~x~4 50) (<= ULTIMATE.start_main_~y~4 50) (<= 50 ULTIMATE.start_main_~y~4)) (and (and (<= ULTIMATE.start_main_~x~4 92) (<= 92 ULTIMATE.start_main_~y~4) (<= ULTIMATE.start_main_~y~4 92)) (<= 92 ULTIMATE.start_main_~x~4))) [2018-09-23 21:23:27,179 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 43) no Hoare annotation was computed. [2018-09-23 21:23:27,207 INFO L202 PluginConnector]: Adding new model gj2007.c.i_4.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.09 09:23:27 BoogieIcfgContainer [2018-09-23 21:23:27,207 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-23 21:23:27,208 INFO L168 Benchmark]: Toolchain (without parser) took 91915.19 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 632.3 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -603.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-09-23 21:23:27,209 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-23 21:23:27,209 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.91 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-23 21:23:27,210 INFO L168 Benchmark]: Boogie Preprocessor took 21.62 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-23 21:23:27,210 INFO L168 Benchmark]: RCFGBuilder took 314.50 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-23 21:23:27,211 INFO L168 Benchmark]: TraceAbstraction took 91529.56 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 632.3 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -624.9 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-09-23 21:23:27,214 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 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 42.91 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.62 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 314.50 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 91529.56 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 632.3 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -624.9 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: 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: 22]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((((((((((((((((((main_~y~4 <= 96 && 96 <= main_~y~4) && main_~x~4 <= 96) && 96 <= main_~x~4) || (79 <= main_~x~4 && (main_~y~4 <= 79 && 79 <= main_~y~4) && main_~x~4 <= 79)) || (((main_~y~4 <= 97 && main_~x~4 <= 97) && 97 <= main_~y~4) && 97 <= main_~x~4)) || (((95 <= main_~y~4 && main_~y~4 <= 95) && main_~x~4 <= 95) && 95 <= main_~x~4)) || (((91 <= main_~y~4 && main_~x~4 <= 91) && main_~y~4 <= 91) && 91 <= main_~x~4)) || (((main_~x~4 <= 72 && 72 <= main_~y~4) && main_~y~4 <= 72) && 72 <= main_~x~4)) || (((main_~x~4 <= 62 && 62 <= main_~y~4) && main_~y~4 <= 62) && 62 <= main_~x~4)) || (54 <= main_~x~4 && (54 <= main_~y~4 && main_~x~4 <= 54) && main_~y~4 <= 54)) || (60 <= main_~x~4 && (main_~y~4 <= 60 && main_~x~4 <= 60) && 60 <= main_~y~4)) || (98 <= main_~x~4 && (main_~x~4 <= 98 && main_~y~4 <= 98) && 98 <= main_~y~4)) || (((88 <= main_~y~4 && main_~y~4 <= 88) && main_~x~4 <= 88) && 88 <= main_~x~4)) || (((main_~x~4 <= 73 && 73 <= main_~y~4) && main_~y~4 <= 73) && 73 <= main_~x~4)) || (64 <= main_~x~4 && (main_~x~4 <= 64 && 64 <= main_~y~4) && main_~y~4 <= 64)) || (((main_~x~4 <= 76 && 76 <= main_~y~4) && main_~y~4 <= 76) && 76 <= main_~x~4)) || (((main_~y~4 <= 84 && main_~x~4 <= 84) && 84 <= main_~y~4) && 84 <= main_~x~4)) || (((main_~y~4 <= 85 && 85 <= main_~y~4) && main_~x~4 <= 85) && 85 <= main_~x~4)) || (((main_~x~4 <= 61 && 61 <= main_~y~4) && main_~y~4 <= 61) && 61 <= main_~x~4)) || (((main_~x~4 <= 59 && main_~y~4 <= 59) && 59 <= main_~y~4) && 59 <= main_~x~4)) || (69 <= main_~x~4 && (main_~y~4 <= 69 && main_~x~4 <= 69) && 69 <= main_~y~4)) || (((55 <= main_~y~4 && main_~y~4 <= 55) && main_~x~4 <= 55) && 55 <= main_~x~4)) || (((99 <= main_~y~4 && main_~y~4 <= 99) && main_~x~4 <= 99) && 99 <= main_~x~4)) || (53 <= main_~x~4 && (main_~x~4 <= 53 && main_~y~4 <= 53) && 53 <= main_~y~4)) || (77 <= main_~x~4 && (main_~x~4 <= 77 && main_~y~4 <= 77) && 77 <= main_~y~4)) || (89 <= main_~x~4 && (main_~y~4 <= 89 && main_~x~4 <= 89) && 89 <= main_~y~4)) || (94 <= main_~x~4 && (main_~y~4 <= 94 && main_~x~4 <= 94) && 94 <= main_~y~4)) || (((main_~y~4 <= 93 && 93 <= main_~y~4) && main_~x~4 <= 93) && 93 <= main_~x~4)) || (68 <= main_~x~4 && (main_~x~4 <= 68 && main_~y~4 <= 68) && 68 <= main_~y~4)) || (((main_~y~4 <= 81 && main_~x~4 <= 81) && 81 <= main_~y~4) && 81 <= main_~x~4)) || (((57 <= main_~y~4 && main_~y~4 <= 57) && main_~x~4 <= 57) && 57 <= main_~x~4)) || (((main_~x~4 <= 82 && 82 <= main_~y~4) && main_~y~4 <= 82) && 82 <= main_~x~4)) || (((main_~y~4 <= 58 && main_~x~4 <= 58) && 58 <= main_~y~4) && 58 <= main_~x~4)) || (78 <= main_~x~4 && (main_~x~4 <= 78 && 78 <= main_~y~4) && main_~y~4 <= 78)) || (((main_~y~4 <= 65 && main_~x~4 <= 65) && 65 <= main_~y~4) && 65 <= main_~x~4)) || (((main_~x~4 <= 90 && 90 <= main_~y~4) && main_~y~4 <= 90) && 90 <= main_~x~4)) || (63 <= main_~x~4 && (63 <= main_~y~4 && main_~y~4 <= 63) && main_~x~4 <= 63)) || (51 <= main_~x~4 && (main_~y~4 <= 51 && 51 <= main_~y~4) && main_~x~4 <= 51)) || (52 <= main_~x~4 && (main_~x~4 <= 52 && 52 <= main_~y~4) && main_~y~4 <= 52)) || (((74 <= main_~y~4 && main_~x~4 <= 74) && main_~y~4 <= 74) && 74 <= main_~x~4)) || (86 <= main_~x~4 && (86 <= main_~y~4 && main_~y~4 <= 86) && main_~x~4 <= 86)) || (56 <= main_~x~4 && (main_~y~4 <= 56 && main_~x~4 <= 56) && 56 <= main_~y~4)) || (67 <= main_~x~4 && (main_~y~4 <= 67 && 67 <= main_~y~4) && main_~x~4 <= 67)) || (83 <= main_~x~4 && (main_~y~4 <= 83 && 83 <= main_~y~4) && main_~x~4 <= 83)) || (((main_~x~4 <= 87 && 87 <= main_~y~4) && main_~y~4 <= 87) && 87 <= main_~x~4)) || (66 <= main_~x~4 && (66 <= main_~y~4 && main_~y~4 <= 66) && main_~x~4 <= 66)) || (((80 <= main_~y~4 && main_~x~4 <= 80) && main_~y~4 <= 80) && 80 <= main_~x~4)) || (70 <= main_~x~4 && (70 <= main_~y~4 && main_~x~4 <= 70) && main_~y~4 <= 70)) || (71 <= main_~x~4 && (71 <= main_~y~4 && main_~x~4 <= 71) && main_~y~4 <= 71)) || (((main_~x~4 <= 75 && main_~y~4 <= 75) && 75 <= main_~y~4) && 75 <= main_~x~4)) || ((main_~x~4 <= 50 && main_~y~4 <= 50) && 50 <= main_~y~4)) || (((main_~x~4 <= 92 && 92 <= main_~y~4) && main_~y~4 <= 92) && 92 <= main_~x~4) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((main_~y~4 <= 96 && 96 <= main_~y~4) && main_~x~4 <= 96) && 96 <= main_~x~4) || (79 <= main_~x~4 && (main_~y~4 <= 79 && 79 <= main_~y~4) && main_~x~4 <= 79)) || (((main_~y~4 <= 97 && main_~x~4 <= 97) && 97 <= main_~y~4) && 97 <= main_~x~4)) || (((95 <= main_~y~4 && main_~y~4 <= 95) && main_~x~4 <= 95) && 95 <= main_~x~4)) || (((91 <= main_~y~4 && main_~x~4 <= 91) && main_~y~4 <= 91) && 91 <= main_~x~4)) || (((main_~x~4 <= 72 && 72 <= main_~y~4) && main_~y~4 <= 72) && 72 <= main_~x~4)) || (((main_~x~4 <= 62 && 62 <= main_~y~4) && main_~y~4 <= 62) && 62 <= main_~x~4)) || (54 <= main_~x~4 && (54 <= main_~y~4 && main_~x~4 <= 54) && main_~y~4 <= 54)) || (60 <= main_~x~4 && (main_~y~4 <= 60 && main_~x~4 <= 60) && 60 <= main_~y~4)) || (98 <= main_~x~4 && (main_~x~4 <= 98 && main_~y~4 <= 98) && 98 <= main_~y~4)) || (((88 <= main_~y~4 && main_~y~4 <= 88) && main_~x~4 <= 88) && 88 <= main_~x~4)) || (((main_~x~4 <= 73 && 73 <= main_~y~4) && main_~y~4 <= 73) && 73 <= main_~x~4)) || (64 <= main_~x~4 && (main_~x~4 <= 64 && 64 <= main_~y~4) && main_~y~4 <= 64)) || (((main_~x~4 <= 76 && 76 <= main_~y~4) && main_~y~4 <= 76) && 76 <= main_~x~4)) || (((main_~y~4 <= 84 && main_~x~4 <= 84) && 84 <= main_~y~4) && 84 <= main_~x~4)) || (((main_~y~4 <= 85 && 85 <= main_~y~4) && main_~x~4 <= 85) && 85 <= main_~x~4)) || (((main_~x~4 <= 61 && 61 <= main_~y~4) && main_~y~4 <= 61) && 61 <= main_~x~4)) || (((main_~x~4 <= 59 && main_~y~4 <= 59) && 59 <= main_~y~4) && 59 <= main_~x~4)) || (69 <= main_~x~4 && (main_~y~4 <= 69 && main_~x~4 <= 69) && 69 <= main_~y~4)) || (((55 <= main_~y~4 && main_~y~4 <= 55) && main_~x~4 <= 55) && 55 <= main_~x~4)) || (((99 <= main_~y~4 && main_~y~4 <= 99) && main_~x~4 <= 99) && 99 <= main_~x~4)) || (53 <= main_~x~4 && (main_~x~4 <= 53 && main_~y~4 <= 53) && 53 <= main_~y~4)) || (77 <= main_~x~4 && (main_~x~4 <= 77 && main_~y~4 <= 77) && 77 <= main_~y~4)) || (89 <= main_~x~4 && (main_~y~4 <= 89 && main_~x~4 <= 89) && 89 <= main_~y~4)) || (94 <= main_~x~4 && (main_~y~4 <= 94 && main_~x~4 <= 94) && 94 <= main_~y~4)) || (((main_~y~4 <= 93 && 93 <= main_~y~4) && main_~x~4 <= 93) && 93 <= main_~x~4)) || (68 <= main_~x~4 && (main_~x~4 <= 68 && main_~y~4 <= 68) && 68 <= main_~y~4)) || (((main_~y~4 <= 81 && main_~x~4 <= 81) && 81 <= main_~y~4) && 81 <= main_~x~4)) || (((57 <= main_~y~4 && main_~y~4 <= 57) && main_~x~4 <= 57) && 57 <= main_~x~4)) || (((main_~x~4 <= 82 && 82 <= main_~y~4) && main_~y~4 <= 82) && 82 <= main_~x~4)) || (((main_~y~4 <= 58 && main_~x~4 <= 58) && 58 <= main_~y~4) && 58 <= main_~x~4)) || (78 <= main_~x~4 && (main_~x~4 <= 78 && 78 <= main_~y~4) && main_~y~4 <= 78)) || (((main_~y~4 <= 65 && main_~x~4 <= 65) && 65 <= main_~y~4) && 65 <= main_~x~4)) || (((main_~x~4 <= 90 && 90 <= main_~y~4) && main_~y~4 <= 90) && 90 <= main_~x~4)) || (63 <= main_~x~4 && (63 <= main_~y~4 && main_~y~4 <= 63) && main_~x~4 <= 63)) || (51 <= main_~x~4 && (main_~y~4 <= 51 && 51 <= main_~y~4) && main_~x~4 <= 51)) || (52 <= main_~x~4 && (main_~x~4 <= 52 && 52 <= main_~y~4) && main_~y~4 <= 52)) || (((74 <= main_~y~4 && main_~x~4 <= 74) && main_~y~4 <= 74) && 74 <= main_~x~4)) || (86 <= main_~x~4 && (86 <= main_~y~4 && main_~y~4 <= 86) && main_~x~4 <= 86)) || (56 <= main_~x~4 && (main_~y~4 <= 56 && main_~x~4 <= 56) && 56 <= main_~y~4)) || (67 <= main_~x~4 && (main_~y~4 <= 67 && 67 <= main_~y~4) && main_~x~4 <= 67)) || (83 <= main_~x~4 && (main_~y~4 <= 83 && 83 <= main_~y~4) && main_~x~4 <= 83)) || (((main_~x~4 <= 87 && 87 <= main_~y~4) && main_~y~4 <= 87) && 87 <= main_~x~4)) || (66 <= main_~x~4 && (66 <= main_~y~4 && main_~y~4 <= 66) && main_~x~4 <= 66)) || (((80 <= main_~y~4 && main_~x~4 <= 80) && main_~y~4 <= 80) && 80 <= main_~x~4)) || (70 <= main_~x~4 && (70 <= main_~y~4 && main_~x~4 <= 70) && main_~y~4 <= 70)) || (71 <= main_~x~4 && (71 <= main_~y~4 && main_~x~4 <= 71) && main_~y~4 <= 71)) || (((main_~x~4 <= 75 && main_~y~4 <= 75) && 75 <= main_~y~4) && 75 <= main_~x~4)) || ((main_~y~4 <= 100 && 99 < main_~y~4) && 100 <= main_~x~4)) || ((main_~x~4 <= 50 && main_~y~4 <= 50) && 50 <= main_~y~4)) || (((main_~x~4 <= 92 && 92 <= main_~y~4) && main_~y~4 <= 92) && 92 <= main_~x~4) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. SAFE Result, 91.4s OverallTime, 51 OverallIterations, 101 TraceHistogramMax, 21.1s AutomataDifference, 0.0s DeadEndRemovalTime, 11.7s HoareAnnotationTime, HoareTripleCheckerStatistics: 292 SDtfs, 729 SDslu, 5891 SDs, 0 SdLazy, 7603 SolverSat, 1935 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6926 GetRequests, 5250 SyntacticMatches, 2 SemanticMatches, 1674 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4800 ImplicationChecksByTransitivity, 48.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206occurred in iteration=50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 51 MinimizatonAttempts, 2660 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 204 NumberOfFragments, 1406 HoareAnnotationTreeSize, 3 FomulaSimplifications, 26790 FormulaSimplificationTreeSizeReduction, 1.4s HoareSimplificationTime, 3 FomulaSimplificationsInter, 396 FormulaSimplificationTreeSizeReductionInter, 10.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 4.2s SatisfiabilityAnalysisTime, 50.7s InterpolantComputationTime, 11394 NumberOfCodeBlocks, 11320 NumberOfCodeBlocksAsserted, 1488 NumberOfCheckSat, 11294 ConstructedInterpolants, 0 QuantifiedInterpolants, 3706256 SizeOfPredicates, 14 NumberOfNonLiveVariables, 14405 ConjunctsInSsa, 1547 ConjunctsInUnsatCore, 100 InterpolantComputations, 3 PerfectInterpolantSequences, 295786/406427 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/gj2007.c.i_4.bplTransformedIcfg_BEv2_3.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-23_21-23-27-232.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/gj2007.c.i_4.bplTransformedIcfg_BEv2_3.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-23_21-23-27-232.csv Received shutdown request...