java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c372c2b [2018-10-02 12:04:43,074 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-02 12:04:43,076 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-02 12:04:43,091 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-02 12:04:43,091 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-02 12:04:43,093 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-02 12:04:43,094 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-02 12:04:43,096 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-02 12:04:43,098 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-02 12:04:43,098 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-02 12:04:43,099 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-02 12:04:43,122 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-02 12:04:43,137 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-02 12:04:43,138 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-02 12:04:43,138 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-02 12:04:43,139 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-02 12:04:43,139 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-02 12:04:43,139 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-02 12:04:43,140 INFO L133 SettingsManager]: * Use SBE=true [2018-10-02 12:04:43,140 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-02 12:04:43,140 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-02 12:04:43,140 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-02 12:04:43,140 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-02 12:04:43,141 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-02 12:04:43,141 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-02 12:04:43,141 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-02 12:04:43,141 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-02 12:04:43,141 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-02 12:04:43,142 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-02 12:04:43,142 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-02 12:04:43,142 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-02 12:04:43,142 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-02 12:04:43,142 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-02 12:04:43,143 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-02 12:04:43,143 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-02 12:04:43,143 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-02 12:04:43,143 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-02 12:04:43,143 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-02 12:04:43,144 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-02 12:04:43,144 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-02 12:04:43,144 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-02 12:04:43,144 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-02 12:04:43,144 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-02 12:04:43,190 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-02 12:04:43,204 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-02 12:04:43,207 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-02 12:04:43,209 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-02 12:04:43,210 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-02 12:04:43,210 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl [2018-10-02 12:04:43,211 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl' [2018-10-02 12:04:43,269 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-02 12:04:43,272 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-02 12:04:43,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-02 12:04:43,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-02 12:04:43,274 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-02 12:04:43,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:04:43" (1/1) ... [2018-10-02 12:04:43,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:04:43" (1/1) ... [2018-10-02 12:04:43,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-02 12:04:43,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-02 12:04:43,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-02 12:04:43,318 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-02 12:04:43,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:04:43" (1/1) ... [2018-10-02 12:04:43,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:04:43" (1/1) ... [2018-10-02 12:04:43,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:04:43" (1/1) ... [2018-10-02 12:04:43,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:04:43" (1/1) ... [2018-10-02 12:04:43,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:04:43" (1/1) ... [2018-10-02 12:04:43,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:04:43" (1/1) ... [2018-10-02 12:04:43,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:04:43" (1/1) ... [2018-10-02 12:04:43,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-02 12:04:43,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-02 12:04:43,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-02 12:04:43,344 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-02 12:04:43,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:04:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-02 12:04:43,420 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-02 12:04:43,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-02 12:04:43,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-02 12:04:43,658 INFO L340 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-02 12:04:43,659 INFO L202 PluginConnector]: Adding new model count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:04:43 BoogieIcfgContainer [2018-10-02 12:04:43,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-02 12:04:43,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-02 12:04:43,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-02 12:04:43,666 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-02 12:04:43,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:04:43" (1/2) ... [2018-10-02 12:04:43,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0bcc87 and model type count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 12:04:43, skipping insertion in model container [2018-10-02 12:04:43,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:04:43" (2/2) ... [2018-10-02 12:04:43,670 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl [2018-10-02 12:04:43,680 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-02 12:04:43,688 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-02 12:04:43,739 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-02 12:04:43,740 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-02 12:04:43,740 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-02 12:04:43,740 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-02 12:04:43,740 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-02 12:04:43,741 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-02 12:04:43,741 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-02 12:04:43,741 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-02 12:04:43,741 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-02 12:04:43,755 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-02 12:04:43,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-02 12:04:43,762 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:43,763 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-02 12:04:43,764 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:43,769 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:43,770 INFO L82 PathProgramCache]: Analyzing trace with hash 30017, now seen corresponding path program 1 times [2018-10-02 12:04:43,772 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:43,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:43,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:43,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:04:43,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:43,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:43,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 12:04:43,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-02 12:04:43,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-02 12:04:43,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-02 12:04:43,940 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:43,942 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-02 12:04:44,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:44,064 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-10-02 12:04:44,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-02 12:04:44,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-02 12:04:44,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:44,081 INFO L225 Difference]: With dead ends: 9 [2018-10-02 12:04:44,081 INFO L226 Difference]: Without dead ends: 5 [2018-10-02 12:04:44,085 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:04:44,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-02 12:04:44,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-02 12:04:44,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-02 12:04:44,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-02 12:04:44,142 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-02 12:04:44,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:44,143 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-02 12:04:44,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-02 12:04:44,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-02 12:04:44,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-02 12:04:44,144 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:44,144 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-02 12:04:44,144 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:44,144 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:44,145 INFO L82 PathProgramCache]: Analyzing trace with hash 928552, now seen corresponding path program 1 times [2018-10-02 12:04:44,145 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:44,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:44,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:44,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:04:44,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:44,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:44,244 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:44,244 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:44,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:04:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:44,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:44,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:44,375 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:44,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-02 12:04:44,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-02 12:04:44,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-02 12:04:44,377 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:44,377 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-10-02 12:04:44,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:44,479 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-02 12:04:44,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-02 12:04:44,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-10-02 12:04:44,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:44,481 INFO L225 Difference]: With dead ends: 8 [2018-10-02 12:04:44,481 INFO L226 Difference]: Without dead ends: 6 [2018-10-02 12:04:44,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:04:44,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-02 12:04:44,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-02 12:04:44,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-02 12:04:44,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-02 12:04:44,485 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-02 12:04:44,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:44,485 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-02 12:04:44,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-02 12:04:44,485 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-02 12:04:44,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-02 12:04:44,486 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:44,486 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-02 12:04:44,486 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:44,487 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:44,487 INFO L82 PathProgramCache]: Analyzing trace with hash 28783137, now seen corresponding path program 2 times [2018-10-02 12:04:44,487 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:44,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:44,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:44,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:04:44,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:44,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:44,569 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:44,570 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:44,586 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:04:44,620 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:04:44,620 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:44,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:44,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:44,695 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:44,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-02 12:04:44,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-02 12:04:44,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-02 12:04:44,696 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:44,696 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-10-02 12:04:44,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:44,821 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-02 12:04:44,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-02 12:04:44,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-10-02 12:04:44,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:44,822 INFO L225 Difference]: With dead ends: 9 [2018-10-02 12:04:44,822 INFO L226 Difference]: Without dead ends: 7 [2018-10-02 12:04:44,823 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:04:44,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-02 12:04:44,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-02 12:04:44,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-02 12:04:44,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-02 12:04:44,826 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-02 12:04:44,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:44,826 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-02 12:04:44,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-02 12:04:44,827 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-02 12:04:44,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-02 12:04:44,827 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:44,828 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-10-02 12:04:44,828 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:44,828 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:44,828 INFO L82 PathProgramCache]: Analyzing trace with hash 892275272, now seen corresponding path program 3 times [2018-10-02 12:04:44,829 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:44,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:44,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:44,830 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:44,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:45,058 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:45,058 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:45,058 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:45,075 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:04:45,104 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-02 12:04:45,105 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:45,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:45,164 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:45,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-02 12:04:45,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-02 12:04:45,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-02 12:04:45,165 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:45,165 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-10-02 12:04:45,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:45,251 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-02 12:04:45,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-02 12:04:45,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-10-02 12:04:45,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:45,253 INFO L225 Difference]: With dead ends: 10 [2018-10-02 12:04:45,253 INFO L226 Difference]: Without dead ends: 8 [2018-10-02 12:04:45,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:04:45,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-02 12:04:45,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-02 12:04:45,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-02 12:04:45,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-02 12:04:45,257 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-02 12:04:45,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:45,257 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-02 12:04:45,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-02 12:04:45,257 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-02 12:04:45,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-02 12:04:45,258 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:45,258 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-10-02 12:04:45,258 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:45,258 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:45,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1890727681, now seen corresponding path program 4 times [2018-10-02 12:04:45,259 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:45,259 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:45,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:45,260 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:45,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:45,441 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:45,442 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:45,442 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:45,449 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:04:45,463 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:04:45,463 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:45,464 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:45,502 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:45,522 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:45,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:04:45,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:04:45,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:04:45,523 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:45,523 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-10-02 12:04:45,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:45,582 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-02 12:04:45,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:04:45,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-10-02 12:04:45,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:45,584 INFO L225 Difference]: With dead ends: 11 [2018-10-02 12:04:45,584 INFO L226 Difference]: Without dead ends: 9 [2018-10-02 12:04:45,584 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:04:45,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-02 12:04:45,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-02 12:04:45,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-02 12:04:45,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-02 12:04:45,587 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-02 12:04:45,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:45,587 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-02 12:04:45,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:04:45,588 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-02 12:04:45,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-02 12:04:45,588 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:45,588 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-10-02 12:04:45,589 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:45,589 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:45,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1516986008, now seen corresponding path program 5 times [2018-10-02 12:04:45,589 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:45,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:45,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:45,591 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:45,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:45,774 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:45,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:45,774 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:45,785 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:04:45,811 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-02 12:04:45,812 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:45,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:45,860 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:45,894 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:45,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:04:45,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:04:45,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:04:45,895 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:45,895 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-10-02 12:04:46,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:46,320 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-02 12:04:46,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:04:46,322 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-02 12:04:46,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:46,323 INFO L225 Difference]: With dead ends: 12 [2018-10-02 12:04:46,323 INFO L226 Difference]: Without dead ends: 10 [2018-10-02 12:04:46,323 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:04:46,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-02 12:04:46,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-02 12:04:46,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-02 12:04:46,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-02 12:04:46,326 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-02 12:04:46,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:46,327 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-02 12:04:46,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:04:46,327 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-02 12:04:46,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-02 12:04:46,327 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:46,327 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-10-02 12:04:46,328 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:46,328 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:46,328 INFO L82 PathProgramCache]: Analyzing trace with hash 218072033, now seen corresponding path program 6 times [2018-10-02 12:04:46,328 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:46,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:46,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:46,330 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:46,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:46,495 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:46,496 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:46,496 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:46,508 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:04:46,541 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-02 12:04:46,541 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:46,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:46,603 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:46,625 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:46,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:04:46,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:04:46,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:04:46,626 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:46,626 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-10-02 12:04:46,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:46,753 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-02 12:04:46,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:04:46,754 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-10-02 12:04:46,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:46,755 INFO L225 Difference]: With dead ends: 13 [2018-10-02 12:04:46,755 INFO L226 Difference]: Without dead ends: 11 [2018-10-02 12:04:46,755 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:04:46,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-02 12:04:46,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-02 12:04:46,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-02 12:04:46,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-02 12:04:46,758 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-02 12:04:46,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:46,759 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-02 12:04:46,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:04:46,759 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-02 12:04:46,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-02 12:04:46,760 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:46,760 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-10-02 12:04:46,760 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:46,760 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:46,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1829703544, now seen corresponding path program 7 times [2018-10-02 12:04:46,761 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:46,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:46,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:46,762 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:46,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:47,059 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:47,060 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:47,060 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:47,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:04:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:47,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:47,123 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:47,143 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:47,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:04:47,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:04:47,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:04:47,144 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:47,145 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-10-02 12:04:47,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:47,264 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-02 12:04:47,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:04:47,265 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-10-02 12:04:47,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:47,266 INFO L225 Difference]: With dead ends: 14 [2018-10-02 12:04:47,266 INFO L226 Difference]: Without dead ends: 12 [2018-10-02 12:04:47,267 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:04:47,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-02 12:04:47,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-02 12:04:47,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-02 12:04:47,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-02 12:04:47,270 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-02 12:04:47,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:47,270 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-02 12:04:47,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:04:47,270 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-02 12:04:47,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 12:04:47,271 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:47,271 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-10-02 12:04:47,271 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:47,272 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:47,272 INFO L82 PathProgramCache]: Analyzing trace with hash -886236991, now seen corresponding path program 8 times [2018-10-02 12:04:47,272 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:47,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:47,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:47,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:04:47,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:47,488 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:47,489 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:47,489 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:47,500 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:04:47,531 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:04:47,531 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:47,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:47,625 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:47,646 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:47,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:04:47,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:04:47,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:04:47,647 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:47,647 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-10-02 12:04:47,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:47,726 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-02 12:04:47,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:04:47,730 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-10-02 12:04:47,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:47,730 INFO L225 Difference]: With dead ends: 15 [2018-10-02 12:04:47,730 INFO L226 Difference]: Without dead ends: 13 [2018-10-02 12:04:47,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:04:47,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-02 12:04:47,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-02 12:04:47,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-02 12:04:47,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-02 12:04:47,734 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-02 12:04:47,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:47,734 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-02 12:04:47,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:04:47,734 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-02 12:04:47,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-02 12:04:47,735 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:47,735 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-10-02 12:04:47,735 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:47,735 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:47,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1703544920, now seen corresponding path program 9 times [2018-10-02 12:04:47,735 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:47,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:47,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:47,737 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:47,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:47,923 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:47,924 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:47,924 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:47,933 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:04:47,987 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-02 12:04:47,988 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:47,990 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:48,037 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:48,057 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:48,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-02 12:04:48,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-02 12:04:48,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-02 12:04:48,058 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:48,058 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-10-02 12:04:48,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:48,140 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-02 12:04:48,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-02 12:04:48,141 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-10-02 12:04:48,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:48,142 INFO L225 Difference]: With dead ends: 16 [2018-10-02 12:04:48,142 INFO L226 Difference]: Without dead ends: 14 [2018-10-02 12:04:48,143 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:04:48,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-02 12:04:48,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-02 12:04:48,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-02 12:04:48,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-02 12:04:48,146 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-02 12:04:48,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:48,146 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-02 12:04:48,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-02 12:04:48,147 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-02 12:04:48,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:04:48,147 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:48,147 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-10-02 12:04:48,147 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:48,148 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:48,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1270286943, now seen corresponding path program 10 times [2018-10-02 12:04:48,148 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:48,148 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:48,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:48,149 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:48,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:48,304 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:48,304 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:48,304 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:48,313 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:04:48,335 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:04:48,335 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:48,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:48,392 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:48,412 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:48,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-02 12:04:48,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-02 12:04:48,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-02 12:04:48,413 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:48,413 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-10-02 12:04:48,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:48,497 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-02 12:04:48,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-02 12:04:48,498 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-10-02 12:04:48,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:48,499 INFO L225 Difference]: With dead ends: 17 [2018-10-02 12:04:48,499 INFO L226 Difference]: Without dead ends: 15 [2018-10-02 12:04:48,499 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:04:48,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-02 12:04:48,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-02 12:04:48,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-02 12:04:48,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-02 12:04:48,504 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-02 12:04:48,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:48,504 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-02 12:04:48,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-02 12:04:48,505 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-02 12:04:48,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-02 12:04:48,505 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:48,506 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-10-02 12:04:48,506 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:48,506 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:48,506 INFO L82 PathProgramCache]: Analyzing trace with hash -724191544, now seen corresponding path program 11 times [2018-10-02 12:04:48,506 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:48,506 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:48,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:48,507 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:48,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:48,915 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:48,915 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:48,916 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:48,924 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:04:48,961 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-02 12:04:48,962 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:48,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:49,025 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:49,046 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:49,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-02 12:04:49,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-02 12:04:49,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-02 12:04:49,047 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:49,047 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-10-02 12:04:49,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:49,179 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-02 12:04:49,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-02 12:04:49,180 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-10-02 12:04:49,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:49,181 INFO L225 Difference]: With dead ends: 18 [2018-10-02 12:04:49,181 INFO L226 Difference]: Without dead ends: 16 [2018-10-02 12:04:49,182 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:04:49,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-02 12:04:49,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-02 12:04:49,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-02 12:04:49,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-02 12:04:49,185 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-02 12:04:49,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:49,186 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-02 12:04:49,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-02 12:04:49,186 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-02 12:04:49,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:04:49,187 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:49,187 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-10-02 12:04:49,187 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:49,187 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:49,188 INFO L82 PathProgramCache]: Analyzing trace with hash -975103359, now seen corresponding path program 12 times [2018-10-02 12:04:49,188 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:49,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:49,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:49,189 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:49,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:49,361 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:49,361 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:49,370 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:04:49,396 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-02 12:04:49,397 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:49,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:49,448 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:49,473 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:49,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-02 12:04:49,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-02 12:04:49,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-02 12:04:49,474 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:49,474 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-10-02 12:04:49,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:49,574 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-02 12:04:49,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-02 12:04:49,575 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-10-02 12:04:49,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:49,576 INFO L225 Difference]: With dead ends: 19 [2018-10-02 12:04:49,576 INFO L226 Difference]: Without dead ends: 17 [2018-10-02 12:04:49,577 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:04:49,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-02 12:04:49,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-02 12:04:49,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-02 12:04:49,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-02 12:04:49,581 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-02 12:04:49,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:49,581 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-02 12:04:49,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-02 12:04:49,582 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-02 12:04:49,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-02 12:04:49,582 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:49,582 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-10-02 12:04:49,583 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:49,583 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:49,583 INFO L82 PathProgramCache]: Analyzing trace with hash -163435032, now seen corresponding path program 13 times [2018-10-02 12:04:49,583 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:49,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:49,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:49,584 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:49,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:50,017 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:50,018 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:50,018 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:50,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:04:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:50,050 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:50,103 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:50,124 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:50,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-02 12:04:50,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-02 12:04:50,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-02 12:04:50,126 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:50,126 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-10-02 12:04:50,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:50,429 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-02 12:04:50,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-02 12:04:50,430 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-10-02 12:04:50,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:50,430 INFO L225 Difference]: With dead ends: 20 [2018-10-02 12:04:50,431 INFO L226 Difference]: Without dead ends: 18 [2018-10-02 12:04:50,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime [2018-10-02 12:04:50,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-02 12:04:50,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-02 12:04:50,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-02 12:04:50,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-02 12:04:50,435 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-02 12:04:50,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:50,436 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-02 12:04:50,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-02 12:04:50,436 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-02 12:04:50,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:04:50,437 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:50,437 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-10-02 12:04:50,437 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:50,437 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:50,437 INFO L82 PathProgramCache]: Analyzing trace with hash -771520671, now seen corresponding path program 14 times [2018-10-02 12:04:50,438 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:50,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:50,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:50,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:04:50,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:50,728 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:50,729 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:50,729 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:50,737 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:04:50,769 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:04:50,769 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:50,771 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:50,857 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:50,878 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:50,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-02 12:04:50,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-02 12:04:50,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-02 12:04:50,879 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:50,879 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-10-02 12:04:50,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:50,993 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-02 12:04:50,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-02 12:04:50,994 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-10-02 12:04:50,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:50,995 INFO L225 Difference]: With dead ends: 21 [2018-10-02 12:04:50,995 INFO L226 Difference]: Without dead ends: 19 [2018-10-02 12:04:50,996 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:04:50,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-02 12:04:50,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-02 12:04:50,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-02 12:04:50,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-02 12:04:51,000 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-02 12:04:51,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:51,000 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-02 12:04:51,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-02 12:04:51,000 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-02 12:04:51,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-02 12:04:51,001 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:51,001 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-10-02 12:04:51,002 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:51,002 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:51,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1852661000, now seen corresponding path program 15 times [2018-10-02 12:04:51,002 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:51,002 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:51,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:51,003 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:51,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:51,427 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:51,428 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:51,428 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:51,436 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:04:51,501 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-02 12:04:51,502 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:51,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:51,640 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:51,671 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:51,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-02 12:04:51,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-02 12:04:51,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-02 12:04:51,672 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:51,672 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-10-02 12:04:51,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:51,788 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-02 12:04:51,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-02 12:04:51,789 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-10-02 12:04:51,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:51,790 INFO L225 Difference]: With dead ends: 22 [2018-10-02 12:04:51,790 INFO L226 Difference]: Without dead ends: 20 [2018-10-02 12:04:51,790 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime [2018-10-02 12:04:51,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-02 12:04:51,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-02 12:04:51,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-02 12:04:51,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-02 12:04:51,794 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-02 12:04:51,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:51,794 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-02 12:04:51,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-02 12:04:51,794 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-02 12:04:51,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:04:51,795 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:51,795 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-10-02 12:04:51,795 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:51,795 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:51,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1597914177, now seen corresponding path program 16 times [2018-10-02 12:04:51,796 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:51,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:51,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:51,797 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:51,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:52,147 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:52,148 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:52,148 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:52,157 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:04:52,185 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:04:52,185 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:52,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:52,244 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:52,265 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:52,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-02 12:04:52,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-02 12:04:52,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-02 12:04:52,266 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:52,266 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-10-02 12:04:52,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:52,422 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-02 12:04:52,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-02 12:04:52,424 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-10-02 12:04:52,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:52,424 INFO L225 Difference]: With dead ends: 23 [2018-10-02 12:04:52,424 INFO L226 Difference]: Without dead ends: 21 [2018-10-02 12:04:52,425 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime [2018-10-02 12:04:52,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-02 12:04:52,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-02 12:04:52,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-02 12:04:52,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-02 12:04:52,427 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-10-02 12:04:52,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:52,427 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-02 12:04:52,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-02 12:04:52,428 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-02 12:04:52,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-02 12:04:52,428 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:52,428 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-10-02 12:04:52,428 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:52,429 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:52,429 INFO L82 PathProgramCache]: Analyzing trace with hash -2004270040, now seen corresponding path program 17 times [2018-10-02 12:04:52,429 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:52,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:52,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:52,430 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:52,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:53,397 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:53,398 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:53,398 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:53,405 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:04:53,494 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-02 12:04:53,495 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:53,496 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:53,556 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:53,578 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:53,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-02 12:04:53,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-02 12:04:53,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-02 12:04:53,579 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:53,579 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-10-02 12:04:53,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:53,807 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-02 12:04:53,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-02 12:04:53,807 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-10-02 12:04:53,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:53,808 INFO L225 Difference]: With dead ends: 24 [2018-10-02 12:04:53,808 INFO L226 Difference]: Without dead ends: 22 [2018-10-02 12:04:53,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime [2018-10-02 12:04:53,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-02 12:04:53,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-02 12:04:53,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:04:53,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-02 12:04:53,812 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-10-02 12:04:53,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:53,813 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-02 12:04:53,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-02 12:04:53,813 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-02 12:04:53,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-02 12:04:53,813 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:53,814 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-10-02 12:04:53,814 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:53,814 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:53,814 INFO L82 PathProgramCache]: Analyzing trace with hash -2002831071, now seen corresponding path program 18 times [2018-10-02 12:04:53,814 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:53,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:53,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:53,815 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:53,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:54,174 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:54,175 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:54,175 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:54,186 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:04:54,218 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-02 12:04:54,218 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:54,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:54,267 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:54,296 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:54,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-02 12:04:54,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-02 12:04:54,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-02 12:04:54,298 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:54,298 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-10-02 12:04:54,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:54,440 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-02 12:04:54,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-02 12:04:54,440 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-10-02 12:04:54,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:54,441 INFO L225 Difference]: With dead ends: 25 [2018-10-02 12:04:54,442 INFO L226 Difference]: Without dead ends: 23 [2018-10-02 12:04:54,442 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime [2018-10-02 12:04:54,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-02 12:04:54,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-02 12:04:54,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-02 12:04:54,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-02 12:04:54,446 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-10-02 12:04:54,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:54,446 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-02 12:04:54,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-02 12:04:54,447 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-02 12:04:54,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-02 12:04:54,447 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:54,448 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-10-02 12:04:54,448 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:54,448 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:54,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1958223032, now seen corresponding path program 19 times [2018-10-02 12:04:54,448 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:54,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:54,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:54,449 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:54,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:54,749 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:54,749 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:54,749 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:54,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:04:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:54,791 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:54,917 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:54,938 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:54,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-02 12:04:54,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-02 12:04:54,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-02 12:04:54,939 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:54,939 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-10-02 12:04:55,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:55,083 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-02 12:04:55,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-02 12:04:55,084 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-10-02 12:04:55,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:55,084 INFO L225 Difference]: With dead ends: 26 [2018-10-02 12:04:55,085 INFO L226 Difference]: Without dead ends: 24 [2018-10-02 12:04:55,085 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:04:55,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-02 12:04:55,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-02 12:04:55,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:04:55,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-02 12:04:55,088 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-10-02 12:04:55,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:55,088 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-02 12:04:55,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-02 12:04:55,088 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-02 12:04:55,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-02 12:04:55,089 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:55,089 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-10-02 12:04:55,090 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:55,090 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:55,090 INFO L82 PathProgramCache]: Analyzing trace with hash -575373823, now seen corresponding path program 20 times [2018-10-02 12:04:55,090 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:55,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:55,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:55,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:04:55,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:55,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:55,526 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:55,534 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:04:55,568 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:04:55,569 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:55,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:55,617 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:55,637 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:55,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-02 12:04:55,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-02 12:04:55,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-02 12:04:55,638 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:55,638 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-10-02 12:04:55,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:55,783 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-02 12:04:55,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-02 12:04:55,784 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-10-02 12:04:55,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:55,785 INFO L225 Difference]: With dead ends: 27 [2018-10-02 12:04:55,785 INFO L226 Difference]: Without dead ends: 25 [2018-10-02 12:04:55,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime [2018-10-02 12:04:55,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-02 12:04:55,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-02 12:04:55,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-02 12:04:55,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-02 12:04:55,789 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-10-02 12:04:55,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:55,789 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-02 12:04:55,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-02 12:04:55,789 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-02 12:04:55,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-02 12:04:55,790 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:55,790 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-10-02 12:04:55,790 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:55,791 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:55,791 INFO L82 PathProgramCache]: Analyzing trace with hash -656721304, now seen corresponding path program 21 times [2018-10-02 12:04:55,791 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:55,791 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:55,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:55,792 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:55,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:56,204 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:56,204 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:56,205 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:56,213 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:04:56,252 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-02 12:04:56,252 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:56,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:56,632 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:56,669 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:56,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-02 12:04:56,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-02 12:04:56,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-02 12:04:56,670 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:56,670 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-10-02 12:04:56,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:56,998 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-02 12:04:57,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-02 12:04:57,003 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-10-02 12:04:57,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:57,003 INFO L225 Difference]: With dead ends: 28 [2018-10-02 12:04:57,003 INFO L226 Difference]: Without dead ends: 26 [2018-10-02 12:04:57,003 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.2s impTime [2018-10-02 12:04:57,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-02 12:04:57,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-02 12:04:57,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:04:57,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-02 12:04:57,006 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-10-02 12:04:57,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:57,007 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-02 12:04:57,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-02 12:04:57,007 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-02 12:04:57,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-02 12:04:57,007 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:57,007 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-10-02 12:04:57,008 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:57,008 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:57,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1116474081, now seen corresponding path program 22 times [2018-10-02 12:04:57,008 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:57,008 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:57,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:57,009 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:57,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:57,312 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:57,312 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:57,312 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:57,321 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:04:57,356 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:04:57,357 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:57,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:57,552 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:57,573 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:57,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-02 12:04:57,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-02 12:04:57,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-02 12:04:57,574 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:57,574 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-10-02 12:04:57,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:57,690 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-02 12:04:57,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-02 12:04:57,691 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-10-02 12:04:57,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:57,691 INFO L225 Difference]: With dead ends: 29 [2018-10-02 12:04:57,692 INFO L226 Difference]: Without dead ends: 27 [2018-10-02 12:04:57,692 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime [2018-10-02 12:04:57,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-02 12:04:57,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-02 12:04:57,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-02 12:04:57,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-02 12:04:57,696 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-10-02 12:04:57,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:57,696 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-02 12:04:57,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-02 12:04:57,696 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-02 12:04:57,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-02 12:04:57,697 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:57,697 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-10-02 12:04:57,697 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:57,697 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:57,697 INFO L82 PathProgramCache]: Analyzing trace with hash 250956168, now seen corresponding path program 23 times [2018-10-02 12:04:57,698 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:57,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:57,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:57,698 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:57,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:58,019 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:58,020 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:58,031 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:04:58,131 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-02 12:04:58,131 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:58,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:58,200 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:58,222 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:58,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-02 12:04:58,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-02 12:04:58,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-02 12:04:58,223 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:58,223 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-10-02 12:04:58,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:58,334 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-02 12:04:58,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-02 12:04:58,340 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-10-02 12:04:58,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:58,340 INFO L225 Difference]: With dead ends: 30 [2018-10-02 12:04:58,340 INFO L226 Difference]: Without dead ends: 28 [2018-10-02 12:04:58,340 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:04:58,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-02 12:04:58,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-02 12:04:58,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:04:58,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-02 12:04:58,344 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-10-02 12:04:58,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:58,344 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-02 12:04:58,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-02 12:04:58,346 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-02 12:04:58,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-02 12:04:58,346 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:58,346 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-10-02 12:04:58,347 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:58,347 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:58,347 INFO L82 PathProgramCache]: Analyzing trace with hash -810295359, now seen corresponding path program 24 times [2018-10-02 12:04:58,347 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:58,347 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:58,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:58,348 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:58,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:58,807 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:58,807 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:58,807 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:58,814 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:04:58,887 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-02 12:04:58,888 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:58,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:59,075 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:59,096 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:59,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-02 12:04:59,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-02 12:04:59,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-02 12:04:59,097 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:59,097 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-10-02 12:04:59,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:59,293 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-02 12:04:59,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-02 12:04:59,294 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-10-02 12:04:59,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:59,294 INFO L225 Difference]: With dead ends: 31 [2018-10-02 12:04:59,294 INFO L226 Difference]: Without dead ends: 29 [2018-10-02 12:04:59,295 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.2s impTime [2018-10-02 12:04:59,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-02 12:04:59,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-02 12:04:59,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-02 12:04:59,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-02 12:04:59,299 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-10-02 12:04:59,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:59,299 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-02 12:04:59,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-02 12:04:59,299 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-02 12:04:59,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-02 12:04:59,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:59,300 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-10-02 12:04:59,300 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:59,300 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:59,300 INFO L82 PathProgramCache]: Analyzing trace with hash 650645672, now seen corresponding path program 25 times [2018-10-02 12:04:59,301 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:59,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:59,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:59,301 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:59,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:59,711 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:59,711 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:59,711 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:59,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:04:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:59,768 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:59,885 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:59,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-02 12:04:59,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-02 12:04:59,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-02 12:04:59,886 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:59,886 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-10-02 12:05:00,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:00,050 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-02 12:05:00,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-02 12:05:00,050 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-10-02 12:05:00,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:00,051 INFO L225 Difference]: With dead ends: 32 [2018-10-02 12:05:00,051 INFO L226 Difference]: Without dead ends: 30 [2018-10-02 12:05:00,051 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime [2018-10-02 12:05:00,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-02 12:05:00,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-02 12:05:00,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:05:00,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-02 12:05:00,055 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-02 12:05:00,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:00,055 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-02 12:05:00,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-02 12:05:00,056 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-02 12:05:00,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-02 12:05:00,056 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:00,056 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-10-02 12:05:00,056 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:00,057 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:00,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1304822623, now seen corresponding path program 26 times [2018-10-02 12:05:00,057 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:00,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:00,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:00,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:05:00,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:01,299 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:01,300 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:01,300 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:01,309 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:05:01,353 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:05:01,353 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:01,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:01,434 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:01,455 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:01,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-02 12:05:01,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-02 12:05:01,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-02 12:05:01,456 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:01,456 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-10-02 12:05:01,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:01,662 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-02 12:05:01,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-02 12:05:01,663 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-10-02 12:05:01,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:01,663 INFO L225 Difference]: With dead ends: 33 [2018-10-02 12:05:01,664 INFO L226 Difference]: Without dead ends: 31 [2018-10-02 12:05:01,664 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime [2018-10-02 12:05:01,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-02 12:05:01,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-02 12:05:01,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-02 12:05:01,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-02 12:05:01,667 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-10-02 12:05:01,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:01,667 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-02 12:05:01,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-02 12:05:01,668 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-02 12:05:01,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-02 12:05:01,668 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:01,668 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-10-02 12:05:01,668 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:01,669 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:01,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1794797624, now seen corresponding path program 27 times [2018-10-02 12:05:01,669 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:01,669 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:01,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:01,670 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:01,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:02,316 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:02,317 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:02,317 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:02,325 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:05:02,381 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-02 12:05:02,381 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:02,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:02,459 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:02,481 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:02,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-02 12:05:02,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-02 12:05:02,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-02 12:05:02,482 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:02,482 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-10-02 12:05:02,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:02,671 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-02 12:05:02,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-02 12:05:02,671 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-10-02 12:05:02,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:02,672 INFO L225 Difference]: With dead ends: 34 [2018-10-02 12:05:02,672 INFO L226 Difference]: Without dead ends: 32 [2018-10-02 12:05:02,672 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime [2018-10-02 12:05:02,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-02 12:05:02,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-02 12:05:02,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:05:02,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-02 12:05:02,679 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-10-02 12:05:02,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:02,680 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-02 12:05:02,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-02 12:05:02,680 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-02 12:05:02,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-02 12:05:02,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:02,680 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-10-02 12:05:02,681 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:02,681 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:02,681 INFO L82 PathProgramCache]: Analyzing trace with hash 195846529, now seen corresponding path program 28 times [2018-10-02 12:05:02,681 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:02,681 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:02,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:02,682 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:02,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:03,089 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:03,089 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:03,089 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:03,105 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:05:03,148 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:05:03,149 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:03,150 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:03,206 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:03,227 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:03,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-02 12:05:03,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-02 12:05:03,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-02 12:05:03,228 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:03,228 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-10-02 12:05:03,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:03,366 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-02 12:05:03,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-02 12:05:03,366 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-10-02 12:05:03,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:03,367 INFO L225 Difference]: With dead ends: 35 [2018-10-02 12:05:03,367 INFO L226 Difference]: Without dead ends: 33 [2018-10-02 12:05:03,368 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:05:03,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-02 12:05:03,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-02 12:05:03,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-02 12:05:03,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-02 12:05:03,372 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-10-02 12:05:03,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:03,372 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-02 12:05:03,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-02 12:05:03,372 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-02 12:05:03,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-02 12:05:03,373 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:03,373 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-10-02 12:05:03,373 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:03,373 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:03,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1776273128, now seen corresponding path program 29 times [2018-10-02 12:05:03,374 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:03,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:03,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:03,374 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:03,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:04,093 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:04,093 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:04,093 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:04,100 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:05:04,156 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-02 12:05:04,157 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:04,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:04,264 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:04,284 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:04,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-02 12:05:04,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-02 12:05:04,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-02 12:05:04,285 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:04,285 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-10-02 12:05:04,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:04,446 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-02 12:05:04,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-02 12:05:04,446 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-10-02 12:05:04,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:04,447 INFO L225 Difference]: With dead ends: 36 [2018-10-02 12:05:04,447 INFO L226 Difference]: Without dead ends: 34 [2018-10-02 12:05:04,448 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime [2018-10-02 12:05:04,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-02 12:05:04,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-02 12:05:04,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:05:04,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-02 12:05:04,451 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-10-02 12:05:04,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:04,451 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-02 12:05:04,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-02 12:05:04,451 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-02 12:05:04,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-02 12:05:04,452 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:04,452 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-10-02 12:05:04,452 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:04,452 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:04,452 INFO L82 PathProgramCache]: Analyzing trace with hash -770109855, now seen corresponding path program 30 times [2018-10-02 12:05:04,452 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:04,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:04,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:04,453 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:04,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:04,984 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:04,984 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:04,984 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:04,993 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:05:05,053 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-02 12:05:05,053 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:05,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:05,159 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:05,179 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:05,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-02 12:05:05,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-02 12:05:05,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-02 12:05:05,180 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:05,180 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-10-02 12:05:05,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:05,391 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-02 12:05:05,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-02 12:05:05,392 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-10-02 12:05:05,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:05,393 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:05:05,393 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:05:05,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime [2018-10-02 12:05:05,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:05:05,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-02 12:05:05,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-02 12:05:05,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-02 12:05:05,396 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-10-02 12:05:05,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:05,396 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-02 12:05:05,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-02 12:05:05,396 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-02 12:05:05,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-02 12:05:05,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:05,397 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-10-02 12:05:05,397 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:05,397 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:05,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1896396296, now seen corresponding path program 31 times [2018-10-02 12:05:05,397 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:05,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:05,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:05,398 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:05,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:06,262 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:06,263 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:06,263 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:06,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:05:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:06,318 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:06,386 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:06,407 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:06,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-02 12:05:06,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-02 12:05:06,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-02 12:05:06,408 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:06,408 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-10-02 12:05:06,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:06,573 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-02 12:05:06,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-02 12:05:06,573 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-10-02 12:05:06,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:06,574 INFO L225 Difference]: With dead ends: 38 [2018-10-02 12:05:06,574 INFO L226 Difference]: Without dead ends: 36 [2018-10-02 12:05:06,575 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime [2018-10-02 12:05:06,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-02 12:05:06,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-02 12:05:06,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-02 12:05:06,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-02 12:05:06,580 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-10-02 12:05:06,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:06,580 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-02 12:05:06,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-02 12:05:06,580 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-02 12:05:06,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-02 12:05:06,581 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:06,581 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-10-02 12:05:06,581 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:06,581 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:06,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1341258943, now seen corresponding path program 32 times [2018-10-02 12:05:06,581 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:06,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:06,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:06,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:05:06,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:07,505 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:07,506 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:07,506 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:07,514 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:05:07,563 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:05:07,563 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:07,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:07,693 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:07,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-02 12:05:07,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-02 12:05:07,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-02 12:05:07,693 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:07,694 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-10-02 12:05:07,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:07,899 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-02 12:05:07,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-02 12:05:07,900 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-10-02 12:05:07,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:07,901 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:05:07,901 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:05:07,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime [2018-10-02 12:05:07,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:05:07,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-02 12:05:07,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-02 12:05:07,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-02 12:05:07,905 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-10-02 12:05:07,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:07,905 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-02 12:05:07,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-02 12:05:07,905 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-02 12:05:07,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-02 12:05:07,906 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:07,906 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-10-02 12:05:07,906 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:07,906 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:07,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1370643752, now seen corresponding path program 33 times [2018-10-02 12:05:07,907 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:07,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:07,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:07,907 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:07,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:08,441 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:08,442 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:08,442 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:08,452 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:05:08,518 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-02 12:05:08,518 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:08,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:08,609 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:08,630 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:08,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-02 12:05:08,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-02 12:05:08,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-02 12:05:08,631 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:08,631 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-10-02 12:05:08,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:08,819 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-02 12:05:08,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-02 12:05:08,819 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-10-02 12:05:08,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:08,820 INFO L225 Difference]: With dead ends: 40 [2018-10-02 12:05:08,820 INFO L226 Difference]: Without dead ends: 38 [2018-10-02 12:05:08,820 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.4s impTime [2018-10-02 12:05:08,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-02 12:05:08,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-02 12:05:08,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-02 12:05:08,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-02 12:05:08,823 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-10-02 12:05:08,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:08,823 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-02 12:05:08,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-02 12:05:08,823 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-02 12:05:08,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-02 12:05:08,824 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:08,824 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-10-02 12:05:08,824 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:08,824 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:08,824 INFO L82 PathProgramCache]: Analyzing trace with hash -459718623, now seen corresponding path program 34 times [2018-10-02 12:05:08,824 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:08,824 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:08,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:08,825 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:08,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:09,948 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:09,949 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:09,956 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:05:10,007 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:05:10,008 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:10,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:10,190 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:10,211 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:10,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-02 12:05:10,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-02 12:05:10,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-02 12:05:10,212 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:10,212 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-10-02 12:05:10,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:10,431 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-02 12:05:10,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-02 12:05:10,431 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-10-02 12:05:10,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:10,432 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:05:10,432 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:05:10,432 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime [2018-10-02 12:05:10,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:05:10,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-02 12:05:10,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-02 12:05:10,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-02 12:05:10,436 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-10-02 12:05:10,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:10,436 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-02 12:05:10,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-02 12:05:10,436 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-02 12:05:10,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-02 12:05:10,437 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:10,437 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-10-02 12:05:10,437 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:10,437 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:10,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1366377400, now seen corresponding path program 35 times [2018-10-02 12:05:10,438 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:10,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:10,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:10,439 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:10,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:11,108 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:11,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:11,109 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:11,116 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:05:11,175 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-02 12:05:11,175 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:11,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:11,249 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:11,269 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:11,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-02 12:05:11,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-02 12:05:11,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-02 12:05:11,270 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:11,270 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-10-02 12:05:11,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:11,534 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-02 12:05:11,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-02 12:05:11,535 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-10-02 12:05:11,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:11,535 INFO L225 Difference]: With dead ends: 42 [2018-10-02 12:05:11,536 INFO L226 Difference]: Without dead ends: 40 [2018-10-02 12:05:11,536 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.5s impTime [2018-10-02 12:05:11,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-02 12:05:11,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-02 12:05:11,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-02 12:05:11,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-02 12:05:11,538 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-10-02 12:05:11,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:11,539 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-02 12:05:11,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-02 12:05:11,539 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-02 12:05:11,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-02 12:05:11,539 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:11,539 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-10-02 12:05:11,539 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:11,539 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:11,540 INFO L82 PathProgramCache]: Analyzing trace with hash 591971585, now seen corresponding path program 36 times [2018-10-02 12:05:11,540 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:11,540 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:11,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:11,541 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:11,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:12,208 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:12,208 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:12,208 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:12,217 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:05:12,286 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-02 12:05:12,286 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:12,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:13,166 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:13,186 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:13,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-02 12:05:13,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-02 12:05:13,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-02 12:05:13,187 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:13,187 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-10-02 12:05:13,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:13,409 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-02 12:05:13,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-02 12:05:13,409 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-10-02 12:05:13,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:13,410 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:05:13,410 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:05:13,410 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.5s impTime [2018-10-02 12:05:13,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:05:13,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-02 12:05:13,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-02 12:05:13,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-02 12:05:13,413 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-10-02 12:05:13,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:13,413 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-02 12:05:13,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-02 12:05:13,414 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-02 12:05:13,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-02 12:05:13,414 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:13,414 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-10-02 12:05:13,414 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:13,415 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:13,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1171247976, now seen corresponding path program 37 times [2018-10-02 12:05:13,415 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:13,415 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:13,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:13,416 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:13,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:14,571 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:14,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:14,571 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:14,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:05:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:14,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:14,726 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:14,746 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:14,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-02 12:05:14,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-02 12:05:14,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-02 12:05:14,747 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:14,747 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-10-02 12:05:15,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:15,024 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-02 12:05:15,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-02 12:05:15,025 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-10-02 12:05:15,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:15,025 INFO L225 Difference]: With dead ends: 44 [2018-10-02 12:05:15,025 INFO L226 Difference]: Without dead ends: 42 [2018-10-02 12:05:15,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime [2018-10-02 12:05:15,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-02 12:05:15,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-02 12:05:15,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-02 12:05:15,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-02 12:05:15,029 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-10-02 12:05:15,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:15,029 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-02 12:05:15,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-02 12:05:15,030 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-02 12:05:15,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-02 12:05:15,030 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:15,030 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-10-02 12:05:15,031 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:15,031 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:15,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1948946913, now seen corresponding path program 38 times [2018-10-02 12:05:15,031 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:15,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:15,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:15,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:05:15,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:16,399 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:16,399 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:16,399 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:16,420 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:05:16,476 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:05:16,477 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:16,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:16,598 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:16,619 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:16,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-02 12:05:16,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-02 12:05:16,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-02 12:05:16,619 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:16,619 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-10-02 12:05:16,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:16,856 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-02 12:05:16,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-02 12:05:16,857 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-10-02 12:05:16,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:16,858 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:05:16,858 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:05:16,858 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime [2018-10-02 12:05:16,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:05:16,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-02 12:05:16,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-02 12:05:16,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-02 12:05:16,861 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-10-02 12:05:16,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:16,861 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-02 12:05:16,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-02 12:05:16,861 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-02 12:05:16,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-02 12:05:16,862 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:16,862 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-10-02 12:05:16,862 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:16,862 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:16,862 INFO L82 PathProgramCache]: Analyzing trace with hash 287810184, now seen corresponding path program 39 times [2018-10-02 12:05:16,862 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:16,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:16,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:16,863 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:16,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:17,548 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:17,548 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:17,555 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:05:17,626 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-02 12:05:17,627 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:17,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:17,705 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:17,725 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:17,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-02 12:05:17,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-02 12:05:17,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-02 12:05:17,726 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:17,726 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-10-02 12:05:17,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:17,968 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-02 12:05:17,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-02 12:05:17,969 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-10-02 12:05:17,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:17,970 INFO L225 Difference]: With dead ends: 46 [2018-10-02 12:05:17,970 INFO L226 Difference]: Without dead ends: 44 [2018-10-02 12:05:17,970 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime [2018-10-02 12:05:17,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-02 12:05:17,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-02 12:05:17,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-02 12:05:17,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-02 12:05:17,972 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-10-02 12:05:17,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:17,973 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-02 12:05:17,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-02 12:05:17,973 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-02 12:05:17,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-02 12:05:17,974 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:17,974 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-10-02 12:05:17,974 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:17,974 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:17,974 INFO L82 PathProgramCache]: Analyzing trace with hash 332179137, now seen corresponding path program 40 times [2018-10-02 12:05:17,974 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:17,974 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:17,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:17,975 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:17,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:19,879 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:19,879 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:19,886 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:05:19,943 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:05:19,943 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:19,945 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:20,045 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:20,066 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:20,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-02 12:05:20,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-02 12:05:20,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-02 12:05:20,066 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:20,067 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-10-02 12:05:20,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:20,342 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-02 12:05:20,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-02 12:05:20,343 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-10-02 12:05:20,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:20,343 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:05:20,343 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:05:20,344 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime [2018-10-02 12:05:20,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:05:20,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-02 12:05:20,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-02 12:05:20,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-02 12:05:20,346 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-10-02 12:05:20,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:20,347 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-02 12:05:20,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-02 12:05:20,347 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-02 12:05:20,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-02 12:05:20,347 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:20,347 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-10-02 12:05:20,348 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:20,348 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:20,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1707616680, now seen corresponding path program 41 times [2018-10-02 12:05:20,348 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:20,348 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:20,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:20,349 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:20,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:21,297 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:21,297 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:21,297 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:21,306 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:05:21,390 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-02 12:05:21,391 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:21,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:21,501 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:21,521 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:21,521 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-02 12:05:21,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-02 12:05:21,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-02 12:05:21,522 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:21,522 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-10-02 12:05:21,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:21,936 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-10-02 12:05:21,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-02 12:05:21,936 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-10-02 12:05:21,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:21,937 INFO L225 Difference]: With dead ends: 48 [2018-10-02 12:05:21,937 INFO L226 Difference]: Without dead ends: 46 [2018-10-02 12:05:21,937 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime [2018-10-02 12:05:21,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-02 12:05:21,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-02 12:05:21,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-02 12:05:21,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-02 12:05:21,940 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-10-02 12:05:21,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:21,940 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-02 12:05:21,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-02 12:05:21,940 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-02 12:05:21,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-02 12:05:21,941 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:21,941 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-10-02 12:05:21,941 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:21,941 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:21,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1396507553, now seen corresponding path program 42 times [2018-10-02 12:05:21,941 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:21,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:21,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:21,942 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:21,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:22,744 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:22,744 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:22,758 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:05:22,839 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-02 12:05:22,839 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:22,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:22,950 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:22,971 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:22,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-02 12:05:22,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-02 12:05:22,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-02 12:05:22,972 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:22,973 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-10-02 12:05:23,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:23,274 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-02 12:05:23,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-02 12:05:23,274 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-10-02 12:05:23,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:23,275 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:05:23,275 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:05:23,275 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime [2018-10-02 12:05:23,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:05:23,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-02 12:05:23,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-02 12:05:23,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-02 12:05:23,278 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-10-02 12:05:23,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:23,279 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-02 12:05:23,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-02 12:05:23,279 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-02 12:05:23,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-02 12:05:23,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:23,279 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-10-02 12:05:23,280 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:23,280 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:23,280 INFO L82 PathProgramCache]: Analyzing trace with hash 342059208, now seen corresponding path program 43 times [2018-10-02 12:05:23,280 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:23,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:23,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:23,281 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:23,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:24,306 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:24,306 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:24,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:05:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:24,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:24,566 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:24,587 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:24,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-02 12:05:24,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-02 12:05:24,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-02 12:05:24,588 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:24,588 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-10-02 12:05:24,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:24,981 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-02 12:05:24,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-02 12:05:24,981 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-10-02 12:05:24,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:24,982 INFO L225 Difference]: With dead ends: 50 [2018-10-02 12:05:24,982 INFO L226 Difference]: Without dead ends: 48 [2018-10-02 12:05:24,982 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime [2018-10-02 12:05:24,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-02 12:05:24,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-02 12:05:24,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-02 12:05:24,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-02 12:05:24,984 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-10-02 12:05:24,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:24,985 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-02 12:05:24,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-02 12:05:24,985 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-02 12:05:24,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-02 12:05:24,985 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:24,985 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-10-02 12:05:24,986 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:24,986 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:24,986 INFO L82 PathProgramCache]: Analyzing trace with hash 2013898881, now seen corresponding path program 44 times [2018-10-02 12:05:24,986 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:24,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:24,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:24,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:05:24,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:25,922 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:25,922 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:25,922 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:25,930 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:05:25,993 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:05:25,993 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:25,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:26,085 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:26,105 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:26,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-02 12:05:26,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-02 12:05:26,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-02 12:05:26,106 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:26,106 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-10-02 12:05:26,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:26,381 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-02 12:05:26,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-02 12:05:26,382 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-10-02 12:05:26,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:26,383 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:05:26,383 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:05:26,383 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime [2018-10-02 12:05:26,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:05:26,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-02 12:05:26,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-02 12:05:26,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-02 12:05:26,385 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-10-02 12:05:26,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:26,385 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-02 12:05:26,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-02 12:05:26,386 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-02 12:05:26,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-02 12:05:26,386 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:26,386 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-10-02 12:05:26,386 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:26,387 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:26,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1993646104, now seen corresponding path program 45 times [2018-10-02 12:05:26,387 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:26,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:26,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:26,388 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:26,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:27,099 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:27,099 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:27,108 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:05:27,188 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-02 12:05:27,188 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:27,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:27,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:27,383 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:27,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-02 12:05:27,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-02 12:05:27,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-02 12:05:27,384 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:27,384 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-10-02 12:05:27,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:27,967 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-02 12:05:27,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-02 12:05:27,967 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-10-02 12:05:27,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:27,968 INFO L225 Difference]: With dead ends: 52 [2018-10-02 12:05:27,968 INFO L226 Difference]: Without dead ends: 50 [2018-10-02 12:05:27,969 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime [2018-10-02 12:05:27,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-02 12:05:27,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-02 12:05:27,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-02 12:05:27,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-02 12:05:27,970 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-10-02 12:05:27,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:27,970 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-02 12:05:27,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-02 12:05:27,970 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-02 12:05:27,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-02 12:05:27,971 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:27,971 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-10-02 12:05:27,971 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:27,971 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:27,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1673489055, now seen corresponding path program 46 times [2018-10-02 12:05:27,971 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:27,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:27,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:27,972 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:27,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:29,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:29,159 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:29,159 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:29,167 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:05:29,239 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:05:29,240 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:29,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:29,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:29,418 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:29,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-02 12:05:29,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-02 12:05:29,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-02 12:05:29,419 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:29,419 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-10-02 12:05:29,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:29,902 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-02 12:05:29,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-02 12:05:29,902 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-10-02 12:05:29,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:29,903 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:05:29,903 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:05:29,904 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 1.0s impTime [2018-10-02 12:05:29,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:05:29,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-02 12:05:29,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-02 12:05:29,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-02 12:05:29,906 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-10-02 12:05:29,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:29,906 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-02 12:05:29,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-02 12:05:29,907 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-02 12:05:29,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-02 12:05:29,907 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:29,907 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-10-02 12:05:29,907 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:29,907 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:29,907 INFO L82 PathProgramCache]: Analyzing trace with hash -338555128, now seen corresponding path program 47 times [2018-10-02 12:05:29,907 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:29,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:29,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:29,908 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:29,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:30,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:30,663 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:30,663 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:30,670 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:05:30,753 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-02 12:05:30,753 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:30,756 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:30,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:30,873 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:30,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-02 12:05:30,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-02 12:05:30,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-02 12:05:30,873 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:30,874 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-10-02 12:05:31,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:31,132 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-02 12:05:31,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-02 12:05:31,132 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-10-02 12:05:31,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:31,133 INFO L225 Difference]: With dead ends: 54 [2018-10-02 12:05:31,133 INFO L226 Difference]: Without dead ends: 52 [2018-10-02 12:05:31,134 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime [2018-10-02 12:05:31,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-02 12:05:31,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-02 12:05:31,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-02 12:05:31,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-02 12:05:31,137 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-10-02 12:05:31,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:31,137 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-02 12:05:31,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-02 12:05:31,137 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-02 12:05:31,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-02 12:05:31,137 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:31,138 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-10-02 12:05:31,138 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:31,138 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:31,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1905276351, now seen corresponding path program 48 times [2018-10-02 12:05:31,138 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:31,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:31,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:31,139 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:31,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:31,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:31,853 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:31,853 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:31,861 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:05:31,952 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-02 12:05:31,952 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:31,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:32,070 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:32,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-02 12:05:32,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-02 12:05:32,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-02 12:05:32,071 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:32,071 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-10-02 12:05:32,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:32,301 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-02 12:05:32,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-02 12:05:32,302 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-10-02 12:05:32,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:32,303 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:05:32,303 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:05:32,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime [2018-10-02 12:05:32,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:05:32,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-02 12:05:32,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-02 12:05:32,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-02 12:05:32,306 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-10-02 12:05:32,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:32,306 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-02 12:05:32,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-02 12:05:32,306 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-02 12:05:32,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-02 12:05:32,306 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:32,306 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-10-02 12:05:32,306 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:32,307 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:32,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1065973288, now seen corresponding path program 49 times [2018-10-02 12:05:32,307 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:32,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:32,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:32,307 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:32,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:33,693 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:33,693 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:33,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:05:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:33,772 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:33,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:33,885 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:33,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-02 12:05:33,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-02 12:05:33,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-02 12:05:33,886 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:33,886 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-10-02 12:05:34,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:34,141 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-10-02 12:05:34,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-02 12:05:34,141 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-10-02 12:05:34,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:34,142 INFO L225 Difference]: With dead ends: 56 [2018-10-02 12:05:34,142 INFO L226 Difference]: Without dead ends: 54 [2018-10-02 12:05:34,143 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime [2018-10-02 12:05:34,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-02 12:05:34,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-02 12:05:34,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-02 12:05:34,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-02 12:05:34,146 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-10-02 12:05:34,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:34,146 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-02 12:05:34,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-02 12:05:34,146 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-02 12:05:34,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-02 12:05:34,146 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:34,147 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-10-02 12:05:34,147 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:34,147 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:34,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1314568415, now seen corresponding path program 50 times [2018-10-02 12:05:34,147 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:34,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:34,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:34,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:05:34,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:35,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:35,137 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:35,138 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:35,146 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:05:35,220 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:05:35,220 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:35,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:35,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:35,337 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:35,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-02 12:05:35,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-02 12:05:35,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-02 12:05:35,338 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:35,338 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-10-02 12:05:35,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:35,605 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-02 12:05:35,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-02 12:05:35,606 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-10-02 12:05:35,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:35,607 INFO L225 Difference]: With dead ends: 57 [2018-10-02 12:05:35,607 INFO L226 Difference]: Without dead ends: 55 [2018-10-02 12:05:35,607 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime [2018-10-02 12:05:35,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-02 12:05:35,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-02 12:05:35,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-02 12:05:35,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-02 12:05:35,609 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-10-02 12:05:35,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:35,610 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-02 12:05:35,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-02 12:05:35,610 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-02 12:05:35,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-02 12:05:35,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:35,610 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-10-02 12:05:35,611 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:35,611 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:35,611 INFO L82 PathProgramCache]: Analyzing trace with hash -2096917176, now seen corresponding path program 51 times [2018-10-02 12:05:35,611 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:35,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:35,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:35,612 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:35,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:37,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:37,233 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:37,233 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:37,241 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:05:37,329 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-02 12:05:37,330 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:37,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:37,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:37,730 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:37,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-02 12:05:37,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-02 12:05:37,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-02 12:05:37,731 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:37,731 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-10-02 12:05:38,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:38,053 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-02 12:05:38,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-02 12:05:38,053 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-10-02 12:05:38,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:38,054 INFO L225 Difference]: With dead ends: 58 [2018-10-02 12:05:38,054 INFO L226 Difference]: Without dead ends: 56 [2018-10-02 12:05:38,054 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.3s impTime [2018-10-02 12:05:38,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-02 12:05:38,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-02 12:05:38,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-02 12:05:38,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-02 12:05:38,057 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-10-02 12:05:38,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:38,057 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-02 12:05:38,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-02 12:05:38,058 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-02 12:05:38,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-02 12:05:38,058 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:38,058 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-10-02 12:05:38,058 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:38,058 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:38,059 INFO L82 PathProgramCache]: Analyzing trace with hash -579924991, now seen corresponding path program 52 times [2018-10-02 12:05:38,059 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:38,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:38,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:38,059 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:38,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:39,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:39,548 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:39,548 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:39,555 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:05:39,640 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:05:39,640 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:39,643 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:39,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:39,828 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:39,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-02 12:05:39,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-02 12:05:39,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-02 12:05:39,829 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:39,829 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-10-02 12:05:40,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:40,294 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-02 12:05:40,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-02 12:05:40,295 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-10-02 12:05:40,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:40,296 INFO L225 Difference]: With dead ends: 59 [2018-10-02 12:05:40,296 INFO L226 Difference]: Without dead ends: 57 [2018-10-02 12:05:40,296 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime [2018-10-02 12:05:40,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-02 12:05:40,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-02 12:05:40,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-02 12:05:40,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-02 12:05:40,299 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-10-02 12:05:40,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:40,299 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-02 12:05:40,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-02 12:05:40,300 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-02 12:05:40,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-02 12:05:40,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:40,300 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-10-02 12:05:40,300 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:40,300 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:40,301 INFO L82 PathProgramCache]: Analyzing trace with hash -797807512, now seen corresponding path program 53 times [2018-10-02 12:05:40,301 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:40,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:40,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:40,301 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:40,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:41,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:41,683 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:41,683 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:41,690 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:05:41,785 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-02 12:05:41,785 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:41,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:42,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:42,039 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:42,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-02 12:05:42,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-02 12:05:42,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-02 12:05:42,039 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:42,040 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-10-02 12:05:42,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:42,375 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-10-02 12:05:42,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-02 12:05:42,375 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-10-02 12:05:42,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:42,376 INFO L225 Difference]: With dead ends: 60 [2018-10-02 12:05:42,376 INFO L226 Difference]: Without dead ends: 58 [2018-10-02 12:05:42,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.2s impTime [2018-10-02 12:05:42,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-02 12:05:42,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-02 12:05:42,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-02 12:05:42,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-02 12:05:42,378 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-10-02 12:05:42,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:42,378 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-02 12:05:42,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-02 12:05:42,379 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-02 12:05:42,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-02 12:05:42,379 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:42,379 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-10-02 12:05:42,380 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:42,380 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:42,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1037768929, now seen corresponding path program 54 times [2018-10-02 12:05:42,380 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:42,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:42,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:42,381 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:42,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:43,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:43,438 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:43,438 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:43,446 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:05:43,541 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-02 12:05:43,541 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:43,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:43,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:43,708 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:43,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-02 12:05:43,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-02 12:05:43,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-02 12:05:43,709 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:43,709 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-10-02 12:05:44,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:44,017 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-02 12:05:44,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-02 12:05:44,017 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-10-02 12:05:44,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:44,018 INFO L225 Difference]: With dead ends: 61 [2018-10-02 12:05:44,018 INFO L226 Difference]: Without dead ends: 59 [2018-10-02 12:05:44,018 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.9s impTime [2018-10-02 12:05:44,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-02 12:05:44,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-02 12:05:44,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-02 12:05:44,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-02 12:05:44,020 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-10-02 12:05:44,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:44,020 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-02 12:05:44,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-02 12:05:44,021 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-02 12:05:44,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-02 12:05:44,021 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:44,021 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-10-02 12:05:44,021 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:44,021 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:44,022 INFO L82 PathProgramCache]: Analyzing trace with hash 2106063752, now seen corresponding path program 55 times [2018-10-02 12:05:44,022 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:44,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:44,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:44,023 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:44,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:45,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:45,515 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:45,515 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:45,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:05:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:45,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:45,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:45,722 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:45,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-02 12:05:45,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-02 12:05:45,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-02 12:05:45,723 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:45,724 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-10-02 12:05:46,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:46,083 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-02 12:05:46,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-02 12:05:46,084 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-10-02 12:05:46,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:46,084 INFO L225 Difference]: With dead ends: 62 [2018-10-02 12:05:46,084 INFO L226 Difference]: Without dead ends: 60 [2018-10-02 12:05:46,085 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.2s impTime [2018-10-02 12:05:46,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-02 12:05:46,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-02 12:05:46,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-02 12:05:46,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-02 12:05:46,088 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-10-02 12:05:46,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:46,088 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-02 12:05:46,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-02 12:05:46,088 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-02 12:05:46,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-02 12:05:46,089 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:46,089 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-10-02 12:05:46,089 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:46,089 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:46,089 INFO L82 PathProgramCache]: Analyzing trace with hash 863464897, now seen corresponding path program 56 times [2018-10-02 12:05:46,089 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:46,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:46,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:46,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:05:46,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:47,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:47,156 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:47,156 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:47,164 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:05:47,247 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:05:47,247 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:47,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:47,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:47,379 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:47,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-02 12:05:47,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-02 12:05:47,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-02 12:05:47,380 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:47,380 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-10-02 12:05:47,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:47,710 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-02 12:05:47,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-02 12:05:47,711 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-10-02 12:05:47,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:47,712 INFO L225 Difference]: With dead ends: 63 [2018-10-02 12:05:47,712 INFO L226 Difference]: Without dead ends: 61 [2018-10-02 12:05:47,712 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.9s impTime [2018-10-02 12:05:47,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-02 12:05:47,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-02 12:05:47,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-02 12:05:47,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-02 12:05:47,716 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-10-02 12:05:47,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:47,716 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-02 12:05:47,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-02 12:05:47,716 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-02 12:05:47,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-02 12:05:47,716 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:47,717 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-10-02 12:05:47,717 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:47,717 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:47,717 INFO L82 PathProgramCache]: Analyzing trace with hash 997606056, now seen corresponding path program 57 times [2018-10-02 12:05:47,717 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:47,717 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:47,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:47,718 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:47,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:49,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:49,569 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:49,569 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:49,576 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:05:49,681 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-02 12:05:49,681 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:49,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:51,570 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:51,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-02 12:05:51,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-02 12:05:51,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-02 12:05:51,571 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:51,571 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-10-02 12:05:51,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:51,936 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-10-02 12:05:51,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-02 12:05:51,936 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-10-02 12:05:51,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:51,937 INFO L225 Difference]: With dead ends: 64 [2018-10-02 12:05:51,937 INFO L226 Difference]: Without dead ends: 62 [2018-10-02 12:05:51,937 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time 1.6s impTime [2018-10-02 12:05:51,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-02 12:05:51,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-02 12:05:51,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-02 12:05:51,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-02 12:05:51,940 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-10-02 12:05:51,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:51,941 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-02 12:05:51,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-02 12:05:51,941 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-02 12:05:51,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-02 12:05:51,941 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:51,941 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-10-02 12:05:51,942 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:51,942 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:51,942 INFO L82 PathProgramCache]: Analyzing trace with hash 861014689, now seen corresponding path program 58 times [2018-10-02 12:05:51,942 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:51,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:51,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:51,943 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:51,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:53,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:53,280 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:53,280 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:53,291 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:05:53,371 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:05:53,372 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:53,375 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:53,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:53,513 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:53,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-02 12:05:53,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-02 12:05:53,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-02 12:05:53,514 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:53,514 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-10-02 12:05:53,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:53,908 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-02 12:05:53,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-02 12:05:53,908 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-10-02 12:05:53,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:53,909 INFO L225 Difference]: With dead ends: 65 [2018-10-02 12:05:53,909 INFO L226 Difference]: Without dead ends: 63 [2018-10-02 12:05:53,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.1s impTime [2018-10-02 12:05:53,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-02 12:05:53,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-02 12:05:53,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-02 12:05:53,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-02 12:05:53,913 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-10-02 12:05:53,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:53,913 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-02 12:05:53,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-02 12:05:53,913 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-02 12:05:53,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-02 12:05:53,914 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:53,914 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-10-02 12:05:53,914 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:53,914 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:53,914 INFO L82 PathProgramCache]: Analyzing trace with hash 921649608, now seen corresponding path program 59 times [2018-10-02 12:05:53,914 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:53,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:53,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:53,915 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:53,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:55,814 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:55,815 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:55,822 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:05:55,931 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-02 12:05:55,932 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:55,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:56,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:56,126 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:56,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-02 12:05:56,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-02 12:05:56,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-02 12:05:56,127 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:56,128 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-10-02 12:05:56,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:56,521 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-10-02 12:05:56,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-02 12:05:56,521 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-10-02 12:05:56,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:56,522 INFO L225 Difference]: With dead ends: 66 [2018-10-02 12:05:56,522 INFO L226 Difference]: Without dead ends: 64 [2018-10-02 12:05:56,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.7s impTime [2018-10-02 12:05:56,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-02 12:05:56,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-02 12:05:56,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-02 12:05:56,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-02 12:05:56,525 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-10-02 12:05:56,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:56,525 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-02 12:05:56,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-02 12:05:56,526 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-02 12:05:56,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-02 12:05:56,526 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:56,526 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-10-02 12:05:56,526 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:56,526 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:56,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1493635199, now seen corresponding path program 60 times [2018-10-02 12:05:56,526 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:56,527 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:56,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:56,527 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:56,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:57,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:57,629 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:57,629 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:57,637 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:05:57,743 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-02 12:05:57,743 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:57,746 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:57,897 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:57,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-02 12:05:57,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-02 12:05:57,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-02 12:05:57,898 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:57,898 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-10-02 12:05:58,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:58,232 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-02 12:05:58,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-02 12:05:58,232 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-10-02 12:05:58,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:58,233 INFO L225 Difference]: With dead ends: 67 [2018-10-02 12:05:58,233 INFO L226 Difference]: Without dead ends: 65 [2018-10-02 12:05:58,233 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.9s impTime [2018-10-02 12:05:58,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-02 12:05:58,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-02 12:05:58,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-02 12:05:58,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-02 12:05:58,236 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-10-02 12:05:58,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:58,236 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-02 12:05:58,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-02 12:05:58,236 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-02 12:05:58,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-02 12:05:58,237 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:58,237 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-10-02 12:05:58,237 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:58,237 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:58,237 INFO L82 PathProgramCache]: Analyzing trace with hash 941947112, now seen corresponding path program 61 times [2018-10-02 12:05:58,237 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:58,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:58,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:58,238 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:58,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:59,421 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:59,421 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:59,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:05:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:59,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:59,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:59,650 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:59,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-02 12:05:59,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-02 12:05:59,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-02 12:05:59,651 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:59,651 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-10-02 12:05:59,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:59,966 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-02 12:05:59,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-02 12:05:59,967 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-10-02 12:05:59,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:59,967 INFO L225 Difference]: With dead ends: 68 [2018-10-02 12:05:59,968 INFO L226 Difference]: Without dead ends: 66 [2018-10-02 12:05:59,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime [2018-10-02 12:05:59,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-02 12:05:59,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-02 12:05:59,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-02 12:05:59,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-02 12:05:59,971 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-10-02 12:05:59,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:59,971 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-02 12:05:59,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-02 12:05:59,971 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-02 12:05:59,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-02 12:05:59,971 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:59,972 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-10-02 12:05:59,972 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:59,972 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:59,972 INFO L82 PathProgramCache]: Analyzing trace with hash -864412575, now seen corresponding path program 62 times [2018-10-02 12:05:59,972 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:59,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:59,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:59,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:05:59,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:01,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:01,278 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:01,278 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:01,286 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:06:01,378 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:06:01,379 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:01,383 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:01,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:01,681 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:01,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-02 12:06:01,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-02 12:06:01,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-02 12:06:01,682 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:01,682 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-10-02 12:06:02,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:02,122 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-02 12:06:02,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-02 12:06:02,123 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-10-02 12:06:02,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:02,123 INFO L225 Difference]: With dead ends: 69 [2018-10-02 12:06:02,124 INFO L226 Difference]: Without dead ends: 67 [2018-10-02 12:06:02,124 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime [2018-10-02 12:06:02,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-02 12:06:02,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-02 12:06:02,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-02 12:06:02,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-02 12:06:02,127 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-10-02 12:06:02,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:02,127 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-02 12:06:02,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-02 12:06:02,127 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-02 12:06:02,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-02 12:06:02,127 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:02,127 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-10-02 12:06:02,128 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:02,128 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:02,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1026988024, now seen corresponding path program 63 times [2018-10-02 12:06:02,128 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:02,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:02,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:02,129 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:02,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:03,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:03,345 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:03,345 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:03,356 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:06:03,500 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-02 12:06:03,500 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:03,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:03,720 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:03,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-02 12:06:03,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-02 12:06:03,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-02 12:06:03,721 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:03,721 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-10-02 12:06:04,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:04,227 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-02 12:06:04,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-02 12:06:04,229 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-10-02 12:06:04,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:04,230 INFO L225 Difference]: With dead ends: 70 [2018-10-02 12:06:04,230 INFO L226 Difference]: Without dead ends: 68 [2018-10-02 12:06:04,230 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime [2018-10-02 12:06:04,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-02 12:06:04,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-02 12:06:04,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-02 12:06:04,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-02 12:06:04,233 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-10-02 12:06:04,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:04,233 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-02 12:06:04,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-02 12:06:04,234 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-02 12:06:04,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-02 12:06:04,234 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:04,234 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-10-02 12:06:04,234 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:04,234 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:04,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1771859647, now seen corresponding path program 64 times [2018-10-02 12:06:04,235 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:04,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:04,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:04,236 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:04,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:06,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:06,371 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:06,371 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:06,389 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:06:06,490 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:06:06,490 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:06,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:06,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:06,727 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:06,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-02 12:06:06,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-02 12:06:06,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-02 12:06:06,728 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:06,728 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-10-02 12:06:07,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:07,131 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-02 12:06:07,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-02 12:06:07,131 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-10-02 12:06:07,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:07,132 INFO L225 Difference]: With dead ends: 71 [2018-10-02 12:06:07,132 INFO L226 Difference]: Without dead ends: 69 [2018-10-02 12:06:07,132 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.9s impTime [2018-10-02 12:06:07,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-02 12:06:07,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-02 12:06:07,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-02 12:06:07,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-02 12:06:07,134 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-10-02 12:06:07,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:07,135 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-02 12:06:07,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-02 12:06:07,135 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-02 12:06:07,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-02 12:06:07,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:07,136 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-10-02 12:06:07,136 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:07,136 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:07,136 INFO L82 PathProgramCache]: Analyzing trace with hash 906923816, now seen corresponding path program 65 times [2018-10-02 12:06:07,136 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:07,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:07,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:07,137 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:07,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:08,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:08,702 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:08,702 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:08,710 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:06:08,830 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-02 12:06:08,830 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:08,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:08,996 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:08,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-02 12:06:08,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-02 12:06:08,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-02 12:06:08,997 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:08,998 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-10-02 12:06:09,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:09,413 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-10-02 12:06:09,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-02 12:06:09,414 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-10-02 12:06:09,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:09,414 INFO L225 Difference]: With dead ends: 72 [2018-10-02 12:06:09,414 INFO L226 Difference]: Without dead ends: 70 [2018-10-02 12:06:09,415 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.4s impTime [2018-10-02 12:06:09,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-02 12:06:09,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-02 12:06:09,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-02 12:06:09,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-02 12:06:09,418 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-10-02 12:06:09,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:09,418 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-02 12:06:09,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-02 12:06:09,418 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-02 12:06:09,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-02 12:06:09,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:09,419 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-10-02 12:06:09,419 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:09,419 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:09,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1950134751, now seen corresponding path program 66 times [2018-10-02 12:06:09,419 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:09,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:09,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:09,420 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:09,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:11,032 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:11,032 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:11,038 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:06:11,158 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-02 12:06:11,158 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:11,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:12,553 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:12,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-02 12:06:12,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-02 12:06:12,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-02 12:06:12,554 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:12,554 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-10-02 12:06:16,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:16,017 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-02 12:06:16,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-02 12:06:16,017 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-10-02 12:06:16,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:16,018 INFO L225 Difference]: With dead ends: 73 [2018-10-02 12:06:16,018 INFO L226 Difference]: Without dead ends: 71 [2018-10-02 12:06:16,018 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 1.4s impTime [2018-10-02 12:06:16,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-02 12:06:16,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-02 12:06:16,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-02 12:06:16,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-02 12:06:16,021 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-10-02 12:06:16,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:16,022 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-02 12:06:16,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-02 12:06:16,022 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-02 12:06:16,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-02 12:06:16,022 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:16,022 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-10-02 12:06:16,023 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:16,023 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:16,023 INFO L82 PathProgramCache]: Analyzing trace with hash -324637112, now seen corresponding path program 67 times [2018-10-02 12:06:16,023 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:16,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:16,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:16,024 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:16,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:18,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:18,098 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:18,098 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:18,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:06:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:18,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:18,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:18,670 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:18,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-02 12:06:18,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-02 12:06:18,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-02 12:06:18,671 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:18,671 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-10-02 12:06:19,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:19,103 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-02 12:06:19,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-02 12:06:19,104 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-10-02 12:06:19,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:19,104 INFO L225 Difference]: With dead ends: 74 [2018-10-02 12:06:19,104 INFO L226 Difference]: Without dead ends: 72 [2018-10-02 12:06:19,105 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.9s impTime [2018-10-02 12:06:19,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-02 12:06:19,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-02 12:06:19,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-02 12:06:19,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-02 12:06:19,107 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-10-02 12:06:19,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:19,107 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-02 12:06:19,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-02 12:06:19,107 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-02 12:06:19,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-02 12:06:19,107 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:19,108 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-10-02 12:06:19,108 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:19,108 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:19,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1473817855, now seen corresponding path program 68 times [2018-10-02 12:06:19,108 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:19,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:19,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:19,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:06:19,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:21,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:21,365 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:21,365 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:21,372 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:06:21,472 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:06:21,472 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:21,475 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:21,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:21,616 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:21,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-02 12:06:21,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-02 12:06:21,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-02 12:06:21,617 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:21,617 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-10-02 12:06:21,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:21,928 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-02 12:06:21,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-02 12:06:21,929 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-10-02 12:06:21,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:21,930 INFO L225 Difference]: With dead ends: 75 [2018-10-02 12:06:21,930 INFO L226 Difference]: Without dead ends: 73 [2018-10-02 12:06:21,930 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.0s impTime [2018-10-02 12:06:21,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-02 12:06:21,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-02 12:06:21,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-02 12:06:21,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-02 12:06:21,932 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-10-02 12:06:21,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:21,932 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-02 12:06:21,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-02 12:06:21,932 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-02 12:06:21,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-02 12:06:21,933 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:21,933 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-10-02 12:06:21,933 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:21,933 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:21,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1556284776, now seen corresponding path program 69 times [2018-10-02 12:06:21,933 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:21,933 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:21,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:21,934 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:21,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:24,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:24,173 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:24,173 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:24,180 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:06:24,324 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-02 12:06:24,325 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:24,328 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:24,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:24,485 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:24,485 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-02 12:06:24,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-02 12:06:24,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-02 12:06:24,486 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:24,486 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-10-02 12:06:24,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:24,957 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-02 12:06:24,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-02 12:06:24,957 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-10-02 12:06:24,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:24,958 INFO L225 Difference]: With dead ends: 76 [2018-10-02 12:06:24,958 INFO L226 Difference]: Without dead ends: 74 [2018-10-02 12:06:24,959 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.0s impTime [2018-10-02 12:06:24,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-02 12:06:24,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-02 12:06:24,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-02 12:06:24,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-02 12:06:24,962 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-10-02 12:06:24,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:24,962 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-02 12:06:24,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-02 12:06:24,962 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-02 12:06:24,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-02 12:06:24,963 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:24,963 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-10-02 12:06:24,963 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:24,963 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:24,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1000185825, now seen corresponding path program 70 times [2018-10-02 12:06:24,963 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:24,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:24,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:24,964 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:24,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:26,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:26,480 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:26,487 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:06:26,595 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:06:26,595 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:26,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:26,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:26,766 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:26,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-02 12:06:26,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-02 12:06:26,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-02 12:06:26,768 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:26,768 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-10-02 12:06:27,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:27,239 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-02 12:06:27,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-02 12:06:27,240 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-10-02 12:06:27,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:27,240 INFO L225 Difference]: With dead ends: 77 [2018-10-02 12:06:27,241 INFO L226 Difference]: Without dead ends: 75 [2018-10-02 12:06:27,241 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.3s impTime [2018-10-02 12:06:27,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-02 12:06:27,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-02 12:06:27,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-02 12:06:27,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-02 12:06:27,244 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-10-02 12:06:27,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:27,245 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-02 12:06:27,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-02 12:06:27,245 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-02 12:06:27,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-02 12:06:27,245 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:27,246 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-10-02 12:06:27,246 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:27,246 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:27,246 INFO L82 PathProgramCache]: Analyzing trace with hash 940987528, now seen corresponding path program 71 times [2018-10-02 12:06:27,246 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:27,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:27,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:27,247 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:27,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:29,274 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:29,274 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:29,281 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:06:29,414 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-02 12:06:29,414 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:29,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:29,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:29,757 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:29,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-02 12:06:29,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-02 12:06:29,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-02 12:06:29,758 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:29,758 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-10-02 12:06:30,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:30,224 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-10-02 12:06:30,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-02 12:06:30,224 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-10-02 12:06:30,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:30,225 INFO L225 Difference]: With dead ends: 78 [2018-10-02 12:06:30,225 INFO L226 Difference]: Without dead ends: 76 [2018-10-02 12:06:30,226 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.8s impTime [2018-10-02 12:06:30,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-02 12:06:30,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-02 12:06:30,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-02 12:06:30,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-02 12:06:30,229 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-10-02 12:06:30,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:30,229 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-02 12:06:30,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-02 12:06:30,229 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-02 12:06:30,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-02 12:06:30,230 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:30,230 INFO L375 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-10-02 12:06:30,230 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:30,230 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:30,231 INFO L82 PathProgramCache]: Analyzing trace with hash -894159679, now seen corresponding path program 72 times [2018-10-02 12:06:30,231 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:30,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:30,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:30,232 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:30,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:32,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:32,837 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:32,837 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:32,845 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:06:32,975 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-02 12:06:32,975 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:32,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:33,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:33,162 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:33,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-02 12:06:33,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-02 12:06:33,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-02 12:06:33,163 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:33,163 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-10-02 12:06:33,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:33,650 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-02 12:06:33,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-02 12:06:33,651 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-10-02 12:06:33,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:33,652 INFO L225 Difference]: With dead ends: 79 [2018-10-02 12:06:33,652 INFO L226 Difference]: Without dead ends: 77 [2018-10-02 12:06:33,652 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.3s impTime [2018-10-02 12:06:33,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-02 12:06:33,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-02 12:06:33,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-02 12:06:33,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-02 12:06:33,655 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-10-02 12:06:33,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:33,655 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-02 12:06:33,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-02 12:06:33,656 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-02 12:06:33,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-02 12:06:33,656 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:33,656 INFO L375 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-10-02 12:06:33,656 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:33,656 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:33,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1949148248, now seen corresponding path program 73 times [2018-10-02 12:06:33,657 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:33,657 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:33,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:33,657 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:33,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:36,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:36,471 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:36,471 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:36,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:06:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:36,592 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:36,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:36,755 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:36,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-02 12:06:36,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-02 12:06:36,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-02 12:06:36,756 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:36,756 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-10-02 12:06:37,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:37,276 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-10-02 12:06:37,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-02 12:06:37,276 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-10-02 12:06:37,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:37,277 INFO L225 Difference]: With dead ends: 80 [2018-10-02 12:06:37,277 INFO L226 Difference]: Without dead ends: 78 [2018-10-02 12:06:37,277 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.6s impTime [2018-10-02 12:06:37,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-02 12:06:37,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-02 12:06:37,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-02 12:06:37,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-02 12:06:37,279 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-10-02 12:06:37,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:37,279 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-02 12:06:37,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-02 12:06:37,280 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-02 12:06:37,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-02 12:06:37,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:37,280 INFO L375 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-10-02 12:06:37,280 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:37,280 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:37,280 INFO L82 PathProgramCache]: Analyzing trace with hash -294055519, now seen corresponding path program 74 times [2018-10-02 12:06:37,280 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:37,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:37,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:37,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:06:37,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:39,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:39,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:39,717 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:39,724 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:06:39,829 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:06:39,829 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:39,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:39,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:40,003 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:40,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-02 12:06:40,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-02 12:06:40,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-02 12:06:40,004 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:40,004 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. [2018-10-02 12:06:40,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:40,479 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-02 12:06:40,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-02 12:06:40,480 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 77 [2018-10-02 12:06:40,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:40,480 INFO L225 Difference]: With dead ends: 81 [2018-10-02 12:06:40,480 INFO L226 Difference]: Without dead ends: 79 [2018-10-02 12:06:40,481 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime [2018-10-02 12:06:40,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-02 12:06:40,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-02 12:06:40,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-02 12:06:40,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-02 12:06:40,484 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-10-02 12:06:40,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:40,484 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-02 12:06:40,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-02 12:06:40,484 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-02 12:06:40,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-02 12:06:40,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:40,485 INFO L375 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-10-02 12:06:40,485 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:40,485 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:40,485 INFO L82 PathProgramCache]: Analyzing trace with hash -525788472, now seen corresponding path program 75 times [2018-10-02 12:06:40,485 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:40,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:40,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:40,486 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:40,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:43,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:43,330 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:43,330 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:43,338 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:06:43,477 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-10-02 12:06:43,477 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:43,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:43,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:43,683 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:43,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-02 12:06:43,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-02 12:06:43,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-02 12:06:43,684 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:43,684 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 78 states. [2018-10-02 12:06:44,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:44,707 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-10-02 12:06:44,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-02 12:06:44,708 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2018-10-02 12:06:44,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:44,709 INFO L225 Difference]: With dead ends: 82 [2018-10-02 12:06:44,709 INFO L226 Difference]: Without dead ends: 80 [2018-10-02 12:06:44,709 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.6s impTime [2018-10-02 12:06:44,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-02 12:06:44,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-10-02 12:06:44,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-02 12:06:44,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-02 12:06:44,712 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-10-02 12:06:44,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:44,712 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-02 12:06:44,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-02 12:06:44,712 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-02 12:06:44,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-02 12:06:44,713 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:44,713 INFO L375 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-10-02 12:06:44,713 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:44,713 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:44,713 INFO L82 PathProgramCache]: Analyzing trace with hash 880424577, now seen corresponding path program 76 times [2018-10-02 12:06:44,713 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:44,714 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:44,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:44,714 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:44,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:47,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:47,681 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:47,681 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:47,688 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:06:47,798 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:06:47,798 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:47,801 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:47,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:47,963 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:47,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-02 12:06:47,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-02 12:06:47,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-02 12:06:47,964 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:47,964 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 79 states. [2018-10-02 12:06:48,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:48,811 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-02 12:06:48,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-02 12:06:48,812 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 79 [2018-10-02 12:06:48,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:48,812 INFO L225 Difference]: With dead ends: 83 [2018-10-02 12:06:48,812 INFO L226 Difference]: Without dead ends: 81 [2018-10-02 12:06:48,813 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.7s impTime [2018-10-02 12:06:48,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-02 12:06:48,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-02 12:06:48,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-02 12:06:48,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-02 12:06:48,815 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-10-02 12:06:48,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:48,815 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-02 12:06:48,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-02 12:06:48,816 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-02 12:06:48,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-02 12:06:48,816 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:48,817 INFO L375 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-10-02 12:06:48,817 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:48,817 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:48,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1523356136, now seen corresponding path program 77 times [2018-10-02 12:06:48,817 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:48,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:48,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:48,818 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:48,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:51,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:51,463 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:51,463 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:51,471 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:06:51,648 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-10-02 12:06:51,649 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:51,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:51,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:51,932 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:51,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-02 12:06:51,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-02 12:06:51,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-02 12:06:51,933 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:51,933 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 80 states. [2018-10-02 12:06:52,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:52,436 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-10-02 12:06:52,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-02 12:06:52,437 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 80 [2018-10-02 12:06:52,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:52,438 INFO L225 Difference]: With dead ends: 84 [2018-10-02 12:06:52,438 INFO L226 Difference]: Without dead ends: 82 [2018-10-02 12:06:52,438 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.3s impTime [2018-10-02 12:06:52,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-02 12:06:52,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-10-02 12:06:52,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-02 12:06:52,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-10-02 12:06:52,441 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-10-02 12:06:52,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:52,441 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-10-02 12:06:52,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-02 12:06:52,441 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-10-02 12:06:52,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-02 12:06:52,442 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:52,442 INFO L375 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-10-02 12:06:52,442 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:52,442 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:52,442 INFO L82 PathProgramCache]: Analyzing trace with hash -20602015, now seen corresponding path program 78 times [2018-10-02 12:06:52,442 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:52,442 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:52,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:52,443 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:52,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:54,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:54,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:54,293 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:54,301 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:06:54,450 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2018-10-02 12:06:54,450 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:54,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:54,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:54,647 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:54,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-02 12:06:54,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-02 12:06:54,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-02 12:06:54,648 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:54,648 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 81 states. [2018-10-02 12:06:55,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:55,003 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-02 12:06:55,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-02 12:06:55,004 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 81 [2018-10-02 12:06:55,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:55,005 INFO L225 Difference]: With dead ends: 85 [2018-10-02 12:06:55,005 INFO L226 Difference]: Without dead ends: 83 [2018-10-02 12:06:55,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.6s impTime [2018-10-02 12:06:55,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-02 12:06:55,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-02 12:06:55,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-02 12:06:55,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-02 12:06:55,009 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-10-02 12:06:55,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:55,009 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-02 12:06:55,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-02 12:06:55,009 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-02 12:06:55,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-02 12:06:55,009 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:55,010 INFO L375 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-10-02 12:06:55,010 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:55,010 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:55,010 INFO L82 PathProgramCache]: Analyzing trace with hash -638664440, now seen corresponding path program 79 times [2018-10-02 12:06:55,010 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:55,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:55,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:55,011 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:55,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:57,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:57,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:57,316 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:57,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:06:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:57,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:57,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:57,600 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:57,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-02 12:06:57,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-02 12:06:57,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-02 12:06:57,601 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:57,601 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 82 states. [2018-10-02 12:06:58,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:58,080 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-10-02 12:06:58,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-02 12:06:58,080 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82 [2018-10-02 12:06:58,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:58,081 INFO L225 Difference]: With dead ends: 86 [2018-10-02 12:06:58,081 INFO L226 Difference]: Without dead ends: 84 [2018-10-02 12:06:58,082 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.0s impTime [2018-10-02 12:06:58,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-02 12:06:58,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-10-02 12:06:58,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-02 12:06:58,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-10-02 12:06:58,085 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-10-02 12:06:58,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:58,085 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-10-02 12:06:58,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-02 12:06:58,085 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-10-02 12:06:58,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-02 12:06:58,085 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:58,086 INFO L375 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-10-02 12:06:58,086 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:58,086 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:58,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1676236865, now seen corresponding path program 80 times [2018-10-02 12:06:58,086 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:58,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:58,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:58,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:06:58,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:00,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:00,598 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:00,598 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:00,605 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:07:00,721 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:07:00,721 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:00,725 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:00,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:00,896 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:00,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-02 12:07:00,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-02 12:07:00,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-02 12:07:00,897 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:00,897 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 83 states. [2018-10-02 12:07:01,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:01,460 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-02 12:07:01,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-02 12:07:01,460 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 83 [2018-10-02 12:07:01,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:01,461 INFO L225 Difference]: With dead ends: 87 [2018-10-02 12:07:01,461 INFO L226 Difference]: Without dead ends: 85 [2018-10-02 12:07:01,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.3s impTime [2018-10-02 12:07:01,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-02 12:07:01,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-02 12:07:01,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-02 12:07:01,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-02 12:07:01,463 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-10-02 12:07:01,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:01,463 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-02 12:07:01,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-02 12:07:01,464 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-02 12:07:01,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-02 12:07:01,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:01,464 INFO L375 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-10-02 12:07:01,464 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:01,464 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:01,464 INFO L82 PathProgramCache]: Analyzing trace with hash 423733288, now seen corresponding path program 81 times [2018-10-02 12:07:01,465 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:01,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:01,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:01,465 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:01,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:03,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:03,564 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:03,564 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:03,571 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:07:03,728 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-10-02 12:07:03,728 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:03,732 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:04,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:04,028 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:04,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-02 12:07:04,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-02 12:07:04,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-02 12:07:04,029 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:04,029 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 84 states. [2018-10-02 12:07:04,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:04,470 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-10-02 12:07:04,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-02 12:07:04,471 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 84 [2018-10-02 12:07:04,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:04,472 INFO L225 Difference]: With dead ends: 88 [2018-10-02 12:07:04,472 INFO L226 Difference]: Without dead ends: 86 [2018-10-02 12:07:04,472 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.8s impTime [2018-10-02 12:07:04,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-02 12:07:04,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-02 12:07:04,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-02 12:07:04,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-10-02 12:07:04,474 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-10-02 12:07:04,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:04,475 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-10-02 12:07:04,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-02 12:07:04,475 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-10-02 12:07:04,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-02 12:07:04,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:04,476 INFO L375 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-10-02 12:07:04,476 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:04,476 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:04,476 INFO L82 PathProgramCache]: Analyzing trace with hash 250828065, now seen corresponding path program 82 times [2018-10-02 12:07:04,477 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:04,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:04,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:04,477 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:04,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:07,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:07,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:07,483 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:07,492 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:07:07,609 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:07:07,610 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:07,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:07,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:07,779 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:07,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-02 12:07:07,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-02 12:07:07,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-02 12:07:07,780 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:07,780 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 85 states. [2018-10-02 12:07:08,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:08,429 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-02 12:07:08,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-02 12:07:08,429 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 85 [2018-10-02 12:07:08,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:08,430 INFO L225 Difference]: With dead ends: 89 [2018-10-02 12:07:08,430 INFO L226 Difference]: Without dead ends: 87 [2018-10-02 12:07:08,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.7s impTime [2018-10-02 12:07:08,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-02 12:07:08,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-02 12:07:08,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-02 12:07:08,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-02 12:07:08,434 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-10-02 12:07:08,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:08,434 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-02 12:07:08,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-02 12:07:08,434 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-02 12:07:08,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-02 12:07:08,435 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:08,435 INFO L375 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-10-02 12:07:08,435 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:08,435 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:08,436 INFO L82 PathProgramCache]: Analyzing trace with hash -814266552, now seen corresponding path program 83 times [2018-10-02 12:07:08,436 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:08,436 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:08,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:08,436 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:08,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:11,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:11,544 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:11,552 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:07:11,714 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-02 12:07:11,714 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:11,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:11,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:11,951 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:11,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-02 12:07:11,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-02 12:07:11,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-02 12:07:11,952 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:11,952 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 86 states. [2018-10-02 12:07:12,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:12,674 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-10-02 12:07:12,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-02 12:07:12,675 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86 [2018-10-02 12:07:12,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:12,675 INFO L225 Difference]: With dead ends: 90 [2018-10-02 12:07:12,676 INFO L226 Difference]: Without dead ends: 88 [2018-10-02 12:07:12,676 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.8s impTime [2018-10-02 12:07:12,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-02 12:07:12,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-10-02 12:07:12,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-02 12:07:12,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-10-02 12:07:12,679 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-10-02 12:07:12,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:12,679 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-10-02 12:07:12,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-02 12:07:12,680 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-10-02 12:07:12,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-02 12:07:12,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:12,680 INFO L375 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-10-02 12:07:12,681 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:12,681 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:12,681 INFO L82 PathProgramCache]: Analyzing trace with hash 527538689, now seen corresponding path program 84 times [2018-10-02 12:07:12,681 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:12,681 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:12,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:12,682 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:12,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:14,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:14,626 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:14,626 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:14,637 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:07:14,800 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-02 12:07:14,800 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:14,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:14,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:14,982 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:14,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-02 12:07:14,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-02 12:07:14,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-02 12:07:14,983 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:14,983 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 87 states. [2018-10-02 12:07:15,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:15,439 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-02 12:07:15,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-02 12:07:15,439 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 87 [2018-10-02 12:07:15,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:15,440 INFO L225 Difference]: With dead ends: 91 [2018-10-02 12:07:15,440 INFO L226 Difference]: Without dead ends: 89 [2018-10-02 12:07:15,440 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.6s impTime [2018-10-02 12:07:15,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-02 12:07:15,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-02 12:07:15,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-02 12:07:15,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-02 12:07:15,442 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-10-02 12:07:15,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:15,442 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-02 12:07:15,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-02 12:07:15,443 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-02 12:07:15,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-02 12:07:15,443 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:15,443 INFO L375 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-10-02 12:07:15,444 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:15,444 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:15,444 INFO L82 PathProgramCache]: Analyzing trace with hash -826171800, now seen corresponding path program 85 times [2018-10-02 12:07:15,444 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:15,444 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:15,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:15,445 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:15,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:18,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:18,238 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:18,239 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:18,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:18,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:18,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:18,543 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:18,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-02 12:07:18,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-02 12:07:18,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-02 12:07:18,544 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:18,545 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 88 states. [2018-10-02 12:07:18,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:18,936 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-10-02 12:07:18,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-02 12:07:18,936 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 88 [2018-10-02 12:07:18,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:18,937 INFO L225 Difference]: With dead ends: 92 [2018-10-02 12:07:18,937 INFO L226 Difference]: Without dead ends: 90 [2018-10-02 12:07:18,937 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.4s impTime [2018-10-02 12:07:18,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-02 12:07:18,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-10-02 12:07:18,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-02 12:07:18,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-10-02 12:07:18,939 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-10-02 12:07:18,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:18,940 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-10-02 12:07:18,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-02 12:07:18,940 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-10-02 12:07:18,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-02 12:07:18,940 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:18,941 INFO L375 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-10-02 12:07:18,941 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:18,941 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:18,941 INFO L82 PathProgramCache]: Analyzing trace with hash 158476001, now seen corresponding path program 86 times [2018-10-02 12:07:18,941 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:18,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:18,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:18,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:18,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:21,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:21,430 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:21,430 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:21,438 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:07:21,579 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:07:21,579 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:21,583 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:21,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:21,758 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:21,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-02 12:07:21,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-02 12:07:21,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-02 12:07:21,760 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:21,760 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 89 states. [2018-10-02 12:07:22,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:22,172 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-02 12:07:22,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-02 12:07:22,172 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 89 [2018-10-02 12:07:22,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:22,173 INFO L225 Difference]: With dead ends: 93 [2018-10-02 12:07:22,173 INFO L226 Difference]: Without dead ends: 91 [2018-10-02 12:07:22,173 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime [2018-10-02 12:07:22,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-02 12:07:22,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-02 12:07:22,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-02 12:07:22,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-02 12:07:22,175 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-10-02 12:07:22,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:22,175 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-02 12:07:22,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-02 12:07:22,176 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-02 12:07:22,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-02 12:07:22,176 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:22,176 INFO L375 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-10-02 12:07:22,176 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:22,176 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:22,177 INFO L82 PathProgramCache]: Analyzing trace with hash 617786760, now seen corresponding path program 87 times [2018-10-02 12:07:22,177 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:22,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:22,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:22,177 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:22,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:24,998 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:24,999 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:25,009 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:07:25,189 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2018-10-02 12:07:25,189 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:25,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:25,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:25,378 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:25,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-02 12:07:25,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-02 12:07:25,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-02 12:07:25,379 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:25,379 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 90 states. [2018-10-02 12:07:25,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:25,763 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-10-02 12:07:25,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-02 12:07:25,763 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90 [2018-10-02 12:07:25,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:25,764 INFO L225 Difference]: With dead ends: 94 [2018-10-02 12:07:25,764 INFO L226 Difference]: Without dead ends: 92 [2018-10-02 12:07:25,764 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.4s impTime [2018-10-02 12:07:25,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-02 12:07:25,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-02 12:07:25,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-02 12:07:25,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-10-02 12:07:25,766 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-10-02 12:07:25,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:25,766 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-10-02 12:07:25,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-02 12:07:25,766 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-10-02 12:07:25,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-02 12:07:25,767 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:25,767 INFO L375 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-10-02 12:07:25,767 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:25,767 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:25,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1971518401, now seen corresponding path program 88 times [2018-10-02 12:07:25,767 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:25,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:25,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:25,768 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:25,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:28,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:28,548 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:28,548 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:28,554 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:07:28,679 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:07:28,679 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:28,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:28,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:28,869 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:28,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-02 12:07:28,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-02 12:07:28,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-02 12:07:28,870 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:28,870 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 91 states. [2018-10-02 12:07:29,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:29,271 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-02 12:07:29,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-02 12:07:29,271 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 91 [2018-10-02 12:07:29,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:29,272 INFO L225 Difference]: With dead ends: 95 [2018-10-02 12:07:29,272 INFO L226 Difference]: Without dead ends: 93 [2018-10-02 12:07:29,272 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.5s impTime [2018-10-02 12:07:29,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-02 12:07:29,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-02 12:07:29,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-02 12:07:29,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-02 12:07:29,274 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-10-02 12:07:29,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:29,274 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-02 12:07:29,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-02 12:07:29,274 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-02 12:07:29,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-02 12:07:29,275 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:29,275 INFO L375 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-10-02 12:07:29,275 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:29,275 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:29,275 INFO L82 PathProgramCache]: Analyzing trace with hash 987526312, now seen corresponding path program 89 times [2018-10-02 12:07:29,275 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:29,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:29,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:29,276 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:29,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:31,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:31,549 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:31,549 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:31,556 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:07:31,750 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-10-02 12:07:31,750 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:31,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:31,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:31,957 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:31,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-02 12:07:31,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-02 12:07:31,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-02 12:07:31,958 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:31,958 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 92 states. [2018-10-02 12:07:32,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:32,468 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-10-02 12:07:32,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-02 12:07:32,469 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 92 [2018-10-02 12:07:32,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:32,469 INFO L225 Difference]: With dead ends: 96 [2018-10-02 12:07:32,469 INFO L226 Difference]: Without dead ends: 94 [2018-10-02 12:07:32,470 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.0s impTime [2018-10-02 12:07:32,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-02 12:07:32,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-10-02 12:07:32,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-02 12:07:32,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-02 12:07:32,472 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-10-02 12:07:32,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:32,472 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-02 12:07:32,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-02 12:07:32,472 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-02 12:07:32,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-02 12:07:32,472 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:32,472 INFO L375 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-10-02 12:07:32,473 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:32,473 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:32,473 INFO L82 PathProgramCache]: Analyzing trace with hash 548542625, now seen corresponding path program 90 times [2018-10-02 12:07:32,473 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:32,473 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:32,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:32,474 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:32,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:34,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:34,742 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:34,742 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:34,765 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:07:34,948 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2018-10-02 12:07:34,948 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:34,952 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:35,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:35,148 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:35,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-02 12:07:35,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-02 12:07:35,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-02 12:07:35,149 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:35,149 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 93 states. [2018-10-02 12:07:35,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:35,665 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-02 12:07:35,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-02 12:07:35,665 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 93 [2018-10-02 12:07:35,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:35,666 INFO L225 Difference]: With dead ends: 97 [2018-10-02 12:07:35,666 INFO L226 Difference]: Without dead ends: 95 [2018-10-02 12:07:35,666 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.0s impTime [2018-10-02 12:07:35,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-02 12:07:35,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-02 12:07:35,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-02 12:07:35,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-02 12:07:35,669 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-10-02 12:07:35,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:35,669 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-02 12:07:35,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-02 12:07:35,670 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-02 12:07:35,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-02 12:07:35,670 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:35,670 INFO L375 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-10-02 12:07:35,671 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:35,671 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:35,671 INFO L82 PathProgramCache]: Analyzing trace with hash -175049784, now seen corresponding path program 91 times [2018-10-02 12:07:35,671 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:35,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:35,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:35,672 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:35,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:39,736 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:39,736 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:39,736 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:39,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:39,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:40,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:40,080 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:40,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-02 12:07:40,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-02 12:07:40,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-02 12:07:40,081 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:40,081 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2018-10-02 12:07:40,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:40,740 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-10-02 12:07:40,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-02 12:07:40,741 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94 [2018-10-02 12:07:40,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:40,742 INFO L225 Difference]: With dead ends: 98 [2018-10-02 12:07:40,742 INFO L226 Difference]: Without dead ends: 96 [2018-10-02 12:07:40,742 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s Time 3.8s impTime [2018-10-02 12:07:40,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-02 12:07:40,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-02 12:07:40,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-02 12:07:40,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-02 12:07:40,745 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-10-02 12:07:40,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:40,745 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-02 12:07:40,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-02 12:07:40,745 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-02 12:07:40,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-02 12:07:40,745 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:40,746 INFO L375 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-10-02 12:07:40,746 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:40,746 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:40,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1131577983, now seen corresponding path program 92 times [2018-10-02 12:07:40,746 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:40,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:40,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:40,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:40,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:43,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:43,915 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:43,915 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:43,922 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:07:44,057 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:07:44,057 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:44,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:44,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:44,344 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:44,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-02 12:07:44,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-02 12:07:44,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-02 12:07:44,345 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:44,345 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 95 states. [2018-10-02 12:07:44,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:44,772 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-02 12:07:44,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-02 12:07:44,773 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 95 [2018-10-02 12:07:44,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:44,774 INFO L225 Difference]: With dead ends: 99 [2018-10-02 12:07:44,774 INFO L226 Difference]: Without dead ends: 97 [2018-10-02 12:07:44,774 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 2.9s impTime [2018-10-02 12:07:44,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-02 12:07:44,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-02 12:07:44,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-02 12:07:44,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-02 12:07:44,777 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-10-02 12:07:44,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:44,777 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-02 12:07:44,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-02 12:07:44,778 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-02 12:07:44,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-02 12:07:44,778 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:44,778 INFO L375 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-10-02 12:07:44,778 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:44,778 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:44,778 INFO L82 PathProgramCache]: Analyzing trace with hash -719181080, now seen corresponding path program 93 times [2018-10-02 12:07:44,778 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:44,779 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:44,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:44,779 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:44,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:47,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:47,244 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:47,244 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:47,252 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:07:47,455 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2018-10-02 12:07:47,455 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:47,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:47,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:47,663 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:47,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-02 12:07:47,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-02 12:07:47,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-02 12:07:47,664 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:47,664 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 96 states. [2018-10-02 12:07:48,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:48,429 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-10-02 12:07:48,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-02 12:07:48,430 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 96 [2018-10-02 12:07:48,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:48,431 INFO L225 Difference]: With dead ends: 100 [2018-10-02 12:07:48,431 INFO L226 Difference]: Without dead ends: 98 [2018-10-02 12:07:48,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime [2018-10-02 12:07:48,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-02 12:07:48,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-10-02 12:07:48,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-10-02 12:07:48,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-10-02 12:07:48,433 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-10-02 12:07:48,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:48,433 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-10-02 12:07:48,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-02 12:07:48,433 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-10-02 12:07:48,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-02 12:07:48,434 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:48,434 INFO L375 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-10-02 12:07:48,434 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:48,434 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:48,434 INFO L82 PathProgramCache]: Analyzing trace with hash -819778975, now seen corresponding path program 94 times [2018-10-02 12:07:48,434 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:48,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:48,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:48,435 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:48,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:51,932 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:51,932 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:51,939 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:07:52,077 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:07:52,078 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:52,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:52,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:52,329 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:52,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-02 12:07:52,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-02 12:07:52,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-02 12:07:52,330 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:52,331 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 97 states. [2018-10-02 12:07:52,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:52,772 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-02 12:07:52,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-02 12:07:52,772 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 97 [2018-10-02 12:07:52,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:52,773 INFO L225 Difference]: With dead ends: 101 [2018-10-02 12:07:52,773 INFO L226 Difference]: Without dead ends: 99 [2018-10-02 12:07:52,773 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time 3.2s impTime [2018-10-02 12:07:52,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-02 12:07:52,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-02 12:07:52,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-02 12:07:52,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-02 12:07:52,775 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-10-02 12:07:52,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:52,776 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-02 12:07:52,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-02 12:07:52,776 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-02 12:07:52,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-02 12:07:52,776 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:52,776 INFO L375 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-10-02 12:07:52,776 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:52,777 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:52,777 INFO L82 PathProgramCache]: Analyzing trace with hash 356653576, now seen corresponding path program 95 times [2018-10-02 12:07:52,777 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:52,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:52,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:52,777 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:52,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:56,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:56,100 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:56,100 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:56,107 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:07:56,309 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-02 12:07:56,310 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:56,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:56,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:56,519 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:56,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-02 12:07:56,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-02 12:07:56,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-02 12:07:56,520 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:56,520 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 98 states. [2018-10-02 12:07:57,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:57,158 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-10-02 12:07:57,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-02 12:07:57,158 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98 [2018-10-02 12:07:57,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:57,159 INFO L225 Difference]: With dead ends: 102 [2018-10-02 12:07:57,159 INFO L226 Difference]: Without dead ends: 100 [2018-10-02 12:07:57,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 3.0s impTime [2018-10-02 12:07:57,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-02 12:07:57,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-02 12:07:57,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-02 12:07:57,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-10-02 12:07:57,162 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-10-02 12:07:57,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:57,162 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-10-02 12:07:57,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-02 12:07:57,163 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-10-02 12:07:57,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-02 12:07:57,163 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:57,163 INFO L375 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-10-02 12:07:57,163 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:57,164 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:57,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1828643007, now seen corresponding path program 96 times [2018-10-02 12:07:57,164 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:57,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:57,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:57,164 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:57,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:59,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:59,922 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:59,922 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:59,929 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:08:00,122 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-02 12:08:00,122 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:00,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:00,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:00,333 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:00,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-02 12:08:00,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-02 12:08:00,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-02 12:08:00,334 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:00,334 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 99 states. [2018-10-02 12:08:00,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:00,800 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-02 12:08:00,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-02 12:08:00,801 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 99 [2018-10-02 12:08:00,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:00,802 INFO L225 Difference]: With dead ends: 103 [2018-10-02 12:08:00,802 INFO L226 Difference]: Without dead ends: 101 [2018-10-02 12:08:00,802 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.4s impTime [2018-10-02 12:08:00,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-02 12:08:00,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-02 12:08:00,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-02 12:08:00,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-02 12:08:00,806 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-10-02 12:08:00,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:00,806 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-02 12:08:00,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-02 12:08:00,806 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-02 12:08:00,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-02 12:08:00,807 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:00,807 INFO L375 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-10-02 12:08:00,807 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:00,807 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:00,807 INFO L82 PathProgramCache]: Analyzing trace with hash -853360344, now seen corresponding path program 97 times [2018-10-02 12:08:00,807 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:00,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:00,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:00,808 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:00,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:04,582 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:04,582 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:04,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:04,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:04,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:04,931 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:04,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-02 12:08:04,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-02 12:08:04,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-02 12:08:04,933 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:04,933 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 100 states. [2018-10-02 12:08:05,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:05,408 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-02 12:08:05,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-02 12:08:05,409 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 100 [2018-10-02 12:08:05,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:05,409 INFO L225 Difference]: With dead ends: 104 [2018-10-02 12:08:05,409 INFO L226 Difference]: Without dead ends: 102 [2018-10-02 12:08:05,410 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time 3.5s impTime [2018-10-02 12:08:05,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-10-02 12:08:05,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-10-02 12:08:05,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-10-02 12:08:05,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-10-02 12:08:05,412 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-10-02 12:08:05,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:05,412 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-10-02 12:08:05,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-02 12:08:05,412 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-10-02 12:08:05,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-02 12:08:05,412 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:05,413 INFO L375 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-10-02 12:08:05,413 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:05,413 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:05,413 INFO L82 PathProgramCache]: Analyzing trace with hash -684368863, now seen corresponding path program 98 times [2018-10-02 12:08:05,413 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:05,413 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:05,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:05,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:05,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:10,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:10,183 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:10,183 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:10,190 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:08:10,338 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:08:10,339 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:10,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:10,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:10,545 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:10,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-02 12:08:10,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-02 12:08:10,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-02 12:08:10,546 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:10,546 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2018-10-02 12:08:11,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:11,288 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-02 12:08:11,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-02 12:08:11,288 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2018-10-02 12:08:11,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:11,289 INFO L225 Difference]: With dead ends: 105 [2018-10-02 12:08:11,289 INFO L226 Difference]: Without dead ends: 103 [2018-10-02 12:08:11,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s Time 4.4s impTime [2018-10-02 12:08:11,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-02 12:08:11,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-02 12:08:11,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-02 12:08:11,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-02 12:08:11,292 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-10-02 12:08:11,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:11,292 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-02 12:08:11,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-02 12:08:11,292 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-02 12:08:11,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-02 12:08:11,292 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:11,293 INFO L375 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-10-02 12:08:11,293 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:11,293 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:11,293 INFO L82 PathProgramCache]: Analyzing trace with hash 259399752, now seen corresponding path program 99 times [2018-10-02 12:08:11,293 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:11,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:11,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:11,294 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:11,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:16,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:16,026 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:16,026 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:16,033 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:08:16,237 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2018-10-02 12:08:16,237 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:16,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:16,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:16,450 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:16,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-02 12:08:16,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-02 12:08:16,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-02 12:08:16,451 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:16,451 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 102 states. [2018-10-02 12:08:17,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:17,200 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-10-02 12:08:17,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-02 12:08:17,200 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102 [2018-10-02 12:08:17,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:17,201 INFO L225 Difference]: With dead ends: 106 [2018-10-02 12:08:17,201 INFO L226 Difference]: Without dead ends: 104 [2018-10-02 12:08:17,201 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s Time 4.4s impTime [2018-10-02 12:08:17,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-02 12:08:17,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-10-02 12:08:17,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-02 12:08:17,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-10-02 12:08:17,204 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-10-02 12:08:17,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:17,204 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-10-02 12:08:17,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-02 12:08:17,205 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-10-02 12:08:17,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-02 12:08:17,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:17,205 INFO L375 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-10-02 12:08:17,206 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:17,206 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:17,206 INFO L82 PathProgramCache]: Analyzing trace with hash -548544255, now seen corresponding path program 100 times [2018-10-02 12:08:17,206 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:17,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:17,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:17,207 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:17,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:21,822 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:21,822 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:21,829 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:08:21,972 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:08:21,972 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:21,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:22,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:22,180 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:22,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-02 12:08:22,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-02 12:08:22,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-02 12:08:22,182 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:22,182 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 103 states. [2018-10-02 12:08:22,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:22,947 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-02 12:08:22,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-02 12:08:22,948 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 103 [2018-10-02 12:08:22,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:22,949 INFO L225 Difference]: With dead ends: 107 [2018-10-02 12:08:22,949 INFO L226 Difference]: Without dead ends: 105 [2018-10-02 12:08:22,949 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s Time 4.3s impTime [2018-10-02 12:08:22,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-02 12:08:22,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-02 12:08:22,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-02 12:08:22,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-02 12:08:22,952 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-10-02 12:08:22,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:22,952 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-02 12:08:22,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-02 12:08:22,952 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-02 12:08:22,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-02 12:08:22,953 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:22,953 INFO L375 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-10-02 12:08:22,954 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:22,954 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:22,954 INFO L82 PathProgramCache]: Analyzing trace with hash 174995304, now seen corresponding path program 101 times [2018-10-02 12:08:22,954 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:22,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:22,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:22,955 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:22,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:28,018 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:28,018 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:28,019 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:28,025 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:08:28,243 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2018-10-02 12:08:28,243 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:28,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:28,440 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:28,461 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:28,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-02 12:08:28,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-02 12:08:28,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-02 12:08:28,463 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:28,463 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 104 states. [2018-10-02 12:08:29,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:29,354 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-10-02 12:08:29,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-02 12:08:29,355 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 104 [2018-10-02 12:08:29,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:29,356 INFO L225 Difference]: With dead ends: 108 [2018-10-02 12:08:29,356 INFO L226 Difference]: Without dead ends: 106 [2018-10-02 12:08:29,356 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1s Time 4.7s impTime [2018-10-02 12:08:29,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-02 12:08:29,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-02 12:08:29,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-02 12:08:29,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-02 12:08:29,359 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-10-02 12:08:29,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:29,359 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-02 12:08:29,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-02 12:08:29,359 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-02 12:08:29,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-02 12:08:29,360 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:29,360 INFO L375 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-10-02 12:08:29,360 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:29,361 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:29,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1129885153, now seen corresponding path program 102 times [2018-10-02 12:08:29,361 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:29,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:29,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:29,361 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:29,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:34,210 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:34,210 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:34,210 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:34,217 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:08:34,423 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2018-10-02 12:08:34,424 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:34,429 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:34,632 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:34,652 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:34,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-02 12:08:34,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-02 12:08:34,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-02 12:08:34,654 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:34,654 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2018-10-02 12:08:35,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:35,417 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-02 12:08:35,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-02 12:08:35,418 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2018-10-02 12:08:35,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:35,419 INFO L225 Difference]: With dead ends: 109 [2018-10-02 12:08:35,419 INFO L226 Difference]: Without dead ends: 107 [2018-10-02 12:08:35,419 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s Time 4.5s impTime [2018-10-02 12:08:35,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-02 12:08:35,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-02 12:08:35,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-02 12:08:35,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-02 12:08:35,422 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-10-02 12:08:35,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:35,422 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-02 12:08:35,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-02 12:08:35,422 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-02 12:08:35,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-02 12:08:35,423 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:35,423 INFO L375 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-10-02 12:08:35,423 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:35,424 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:35,424 INFO L82 PathProgramCache]: Analyzing trace with hash 666699400, now seen corresponding path program 103 times [2018-10-02 12:08:35,424 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:35,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:35,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:35,425 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:35,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-02 12:08:37,867 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-02 12:08:37,871 WARN L205 ceAbstractionStarter]: Timeout [2018-10-02 12:08:37,871 INFO L202 PluginConnector]: Adding new model count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 12:08:37 BoogieIcfgContainer [2018-10-02 12:08:37,872 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-02 12:08:37,872 INFO L168 Benchmark]: Toolchain (without parser) took 234603.15 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -66.1 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 341.4 MB). Peak memory consumption was 275.3 MB. Max. memory is 7.1 GB. [2018-10-02 12:08:37,877 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:08:37,877 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.44 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:08:37,878 INFO L168 Benchmark]: Boogie Preprocessor took 24.92 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:08:37,878 INFO L168 Benchmark]: RCFGBuilder took 316.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-02 12:08:37,879 INFO L168 Benchmark]: TraceAbstraction took 234208.69 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -66.1 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 320.3 MB). Peak memory consumption was 254.2 MB. Max. memory is 7.1 GB. [2018-10-02 12:08:37,882 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 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.44 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.92 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 316.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234208.69 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -66.1 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 320.3 MB). Peak memory consumption was 254.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 43). Cancelled while BasicCegarLoop was analyzing trace of length 107 with TraceHistMax 103, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 105 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 234.1s OverallTime, 104 OverallIterations, 103 TraceHistogramMax, 40.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 309 SDtfs, 0 SDslu, 3883 SDs, 0 SdLazy, 9342 SolverSat, 147 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10916 GetRequests, 5560 SyntacticMatches, 0 SemanticMatches, 5356 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 171.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=103, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 103 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.4s SsaConstructionTime, 9.4s SatisfiabilityAnalysisTime, 176.1s InterpolantComputationTime, 11121 NumberOfCodeBlocks, 11121 NumberOfCodeBlocksAsserted, 1599 NumberOfCheckSat, 10916 ConstructedInterpolants, 0 QuantifiedInterpolants, 2260430 SizeOfPredicates, 103 NumberOfNonLiveVariables, 59313 ConjunctsInSsa, 5458 ConjunctsInUnsatCore, 205 InterpolantComputations, 1 PerfectInterpolantSequences, 0/364208 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-02_12-08-37-892.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-02_12-08-37-892.csv Completed graceful shutdown