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 0.1.23-1cc990c [2018-10-01 00:26:17,106 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-01 00:26:17,108 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-01 00:26:17,126 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-01 00:26:17,127 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-01 00:26:17,128 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-01 00:26:17,130 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-01 00:26:17,132 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-01 00:26:17,136 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-01 00:26:17,137 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-01 00:26:17,139 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-01 00:26:17,183 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 [2018-10-01 00:26:17,203 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-01 00:26:17,204 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-01 00:26:17,204 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-01 00:26:17,205 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-01 00:26:17,205 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-01 00:26:17,206 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-01 00:26:17,206 INFO L133 SettingsManager]: * Use SBE=true [2018-10-01 00:26:17,207 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-01 00:26:17,207 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-01 00:26:17,207 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-01 00:26:17,207 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-01 00:26:17,207 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-01 00:26:17,208 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-01 00:26:17,208 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-01 00:26:17,208 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-01 00:26:17,208 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-01 00:26:17,209 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-01 00:26:17,209 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-01 00:26:17,209 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-01 00:26:17,209 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-01 00:26:17,210 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-01 00:26:17,210 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-01 00:26:17,210 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-01 00:26:17,211 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-01 00:26:17,211 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-01 00:26:17,211 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-01 00:26:17,211 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-01 00:26:17,211 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-01 00:26:17,212 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-01 00:26:17,212 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-01 00:26:17,212 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-01 00:26:17,276 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-01 00:26:17,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-01 00:26:17,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-01 00:26:17,295 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-01 00:26:17,296 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-01 00:26:17,297 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl [2018-10-01 00:26:17,297 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl' [2018-10-01 00:26:17,349 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-01 00:26:17,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-01 00:26:17,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-01 00:26:17,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-01 00:26:17,354 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-01 00:26:17,379 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 01.10 12:26:17" (1/1) ... [2018-10-01 00:26:17,391 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 01.10 12:26:17" (1/1) ... [2018-10-01 00:26:17,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-01 00:26:17,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-01 00:26:17,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-01 00:26:17,399 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-01 00:26:17,414 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 01.10 12:26:17" (1/1) ... [2018-10-01 00:26:17,414 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 01.10 12:26:17" (1/1) ... [2018-10-01 00:26:17,415 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 01.10 12:26:17" (1/1) ... [2018-10-01 00:26:17,415 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 01.10 12:26:17" (1/1) ... [2018-10-01 00:26:17,419 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 01.10 12:26:17" (1/1) ... [2018-10-01 00:26:17,422 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 01.10 12:26:17" (1/1) ... [2018-10-01 00:26:17,423 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 01.10 12:26:17" (1/1) ... [2018-10-01 00:26:17,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-01 00:26:17,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-01 00:26:17,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-01 00:26:17,425 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-01 00:26:17,427 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 01.10 12:26:17" (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 [2018-10-01 00:26:17,502 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-01 00:26:17,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-01 00:26:17,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-01 00:26:17,718 INFO L348 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-01 00:26:17,718 INFO L202 PluginConnector]: Adding new model count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 12:26:17 BoogieIcfgContainer [2018-10-01 00:26:17,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-01 00:26:17,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-01 00:26:17,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-01 00:26:17,723 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-01 00:26:17,723 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 01.10 12:26:17" (1/2) ... [2018-10-01 00:26:17,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd1e2a8 and model type count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.10 12:26:17, skipping insertion in model container [2018-10-01 00:26:17,724 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 01.10 12:26:17" (2/2) ... [2018-10-01 00:26:17,726 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl [2018-10-01 00:26:17,736 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-01 00:26:17,746 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-01 00:26:17,796 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-01 00:26:17,797 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-01 00:26:17,797 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-01 00:26:17,797 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-01 00:26:17,797 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-01 00:26:17,797 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-01 00:26:17,798 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-01 00:26:17,798 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-01 00:26:17,798 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-01 00:26:17,813 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-01 00:26:17,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-01 00:26:17,819 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:17,820 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-01 00:26:17,822 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:17,827 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:17,828 INFO L82 PathProgramCache]: Analyzing trace with hash 30017, now seen corresponding path program 1 times [2018-10-01 00:26:17,830 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:17,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:17,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:17,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:17,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:17,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:17,968 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 00:26:17,969 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-01 00:26:17,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-01 00:26:17,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-01 00:26:17,989 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:17,991 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-01 00:26:18,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:18,138 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-10-01 00:26:18,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-01 00:26:18,140 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-01 00:26:18,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:18,152 INFO L225 Difference]: With dead ends: 9 [2018-10-01 00:26:18,153 INFO L226 Difference]: Without dead ends: 5 [2018-10-01 00:26:18,156 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 00:26:18,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-01 00:26:18,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-01 00:26:18,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-01 00:26:18,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-01 00:26:18,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-01 00:26:18,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:18,194 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-01 00:26:18,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-01 00:26:18,195 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-01 00:26:18,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-01 00:26:18,195 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:18,195 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-01 00:26:18,196 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:18,196 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:18,196 INFO L82 PathProgramCache]: Analyzing trace with hash 928552, now seen corresponding path program 1 times [2018-10-01 00:26:18,196 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:18,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:18,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:18,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:18,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:18,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:18,293 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:18,293 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:18,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:18,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:18,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:18,456 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:18,456 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-01 00:26:18,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-01 00:26:18,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-01 00:26:18,458 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:18,458 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-10-01 00:26:18,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:18,556 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-01 00:26:18,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-01 00:26:18,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-10-01 00:26:18,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:18,558 INFO L225 Difference]: With dead ends: 8 [2018-10-01 00:26:18,558 INFO L226 Difference]: Without dead ends: 6 [2018-10-01 00:26:18,559 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:26:18,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-01 00:26:18,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-01 00:26:18,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-01 00:26:18,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-01 00:26:18,562 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-01 00:26:18,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:18,562 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-01 00:26:18,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-01 00:26:18,563 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-01 00:26:18,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-01 00:26:18,563 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:18,563 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-01 00:26:18,564 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:18,564 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:18,564 INFO L82 PathProgramCache]: Analyzing trace with hash 28783137, now seen corresponding path program 2 times [2018-10-01 00:26:18,564 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:18,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:18,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:18,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:18,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:18,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:18,649 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:18,649 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:18,665 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:26:18,689 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:26:18,690 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:18,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:18,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:18,765 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:18,765 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-01 00:26:18,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-01 00:26:18,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-01 00:26:18,766 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:18,766 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-10-01 00:26:18,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:18,898 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-01 00:26:18,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-01 00:26:18,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-10-01 00:26:18,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:18,899 INFO L225 Difference]: With dead ends: 9 [2018-10-01 00:26:18,899 INFO L226 Difference]: Without dead ends: 7 [2018-10-01 00:26:18,900 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 00:26:18,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-01 00:26:18,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-01 00:26:18,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-01 00:26:18,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-01 00:26:18,902 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-01 00:26:18,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:18,903 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-01 00:26:18,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-01 00:26:18,903 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-01 00:26:18,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-01 00:26:18,904 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:18,904 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-10-01 00:26:18,904 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:18,904 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:18,905 INFO L82 PathProgramCache]: Analyzing trace with hash 892275272, now seen corresponding path program 3 times [2018-10-01 00:26:18,905 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:18,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:18,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:18,906 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:18,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:19,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:19,141 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:19,142 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:19,155 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:26:19,179 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-01 00:26:19,180 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:19,181 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:19,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:19,234 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:19,234 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-01 00:26:19,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-01 00:26:19,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-01 00:26:19,235 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:19,235 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-10-01 00:26:19,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:19,358 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-01 00:26:19,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-01 00:26:19,359 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-10-01 00:26:19,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:19,359 INFO L225 Difference]: With dead ends: 10 [2018-10-01 00:26:19,360 INFO L226 Difference]: Without dead ends: 8 [2018-10-01 00:26:19,360 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:26:19,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-01 00:26:19,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-01 00:26:19,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-01 00:26:19,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-01 00:26:19,363 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-01 00:26:19,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:19,363 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-01 00:26:19,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-01 00:26:19,364 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-01 00:26:19,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-01 00:26:19,364 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:19,364 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-10-01 00:26:19,365 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:19,365 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:19,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1890727681, now seen corresponding path program 4 times [2018-10-01 00:26:19,365 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:19,365 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:19,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:19,366 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:19,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:19,565 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:19,566 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:19,566 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:19,576 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:26:19,595 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:26:19,595 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:19,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:19,624 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:19,647 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:19,647 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-01 00:26:19,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-01 00:26:19,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-01 00:26:19,648 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:19,648 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-10-01 00:26:19,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:19,699 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-01 00:26:19,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-01 00:26:19,700 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-10-01 00:26:19,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:19,700 INFO L225 Difference]: With dead ends: 11 [2018-10-01 00:26:19,700 INFO L226 Difference]: Without dead ends: 9 [2018-10-01 00:26:19,700 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:26:19,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-01 00:26:19,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-01 00:26:19,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-01 00:26:19,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-01 00:26:19,703 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-01 00:26:19,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:19,704 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-01 00:26:19,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-01 00:26:19,704 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-01 00:26:19,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-01 00:26:19,704 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:19,705 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-10-01 00:26:19,705 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:19,705 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:19,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1516986008, now seen corresponding path program 5 times [2018-10-01 00:26:19,705 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:19,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:19,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:19,706 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:19,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:19,836 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:19,836 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:19,837 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:19,847 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:26:19,876 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-01 00:26:19,876 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:19,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:19,934 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:19,955 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:19,955 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-01 00:26:19,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-01 00:26:19,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-01 00:26:19,956 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:19,956 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-10-01 00:26:20,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:20,488 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-01 00:26:20,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-01 00:26:20,490 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-01 00:26:20,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:20,490 INFO L225 Difference]: With dead ends: 12 [2018-10-01 00:26:20,490 INFO L226 Difference]: Without dead ends: 10 [2018-10-01 00:26:20,491 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:26:20,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-01 00:26:20,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-01 00:26:20,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-01 00:26:20,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-01 00:26:20,494 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-01 00:26:20,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:20,494 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-01 00:26:20,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-01 00:26:20,495 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-01 00:26:20,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-01 00:26:20,495 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:20,495 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-10-01 00:26:20,496 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:20,496 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:20,496 INFO L82 PathProgramCache]: Analyzing trace with hash 218072033, now seen corresponding path program 6 times [2018-10-01 00:26:20,496 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:20,496 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:20,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:20,497 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:20,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:20,626 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:20,626 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:20,627 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 [2018-10-01 00:26:20,635 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:26:20,652 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-01 00:26:20,653 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:20,655 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:20,714 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:20,714 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-01 00:26:20,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-01 00:26:20,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-01 00:26:20,715 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:20,715 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-10-01 00:26:20,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:20,795 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-01 00:26:20,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-01 00:26:20,796 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-10-01 00:26:20,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:20,796 INFO L225 Difference]: With dead ends: 13 [2018-10-01 00:26:20,797 INFO L226 Difference]: Without dead ends: 11 [2018-10-01 00:26:20,797 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:26:20,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-01 00:26:20,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-01 00:26:20,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-01 00:26:20,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-01 00:26:20,800 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-01 00:26:20,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:20,800 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-01 00:26:20,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-01 00:26:20,801 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-01 00:26:20,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-01 00:26:20,801 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:20,802 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-10-01 00:26:20,802 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:20,802 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:20,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1829703544, now seen corresponding path program 7 times [2018-10-01 00:26:20,802 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:20,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:20,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:20,804 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:20,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:20,935 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:20,936 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:20,936 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 [2018-10-01 00:26:20,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:20,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:21,033 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:21,056 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:21,056 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-01 00:26:21,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-01 00:26:21,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-01 00:26:21,056 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:21,057 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-10-01 00:26:21,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:21,158 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-01 00:26:21,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-01 00:26:21,159 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-10-01 00:26:21,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:21,160 INFO L225 Difference]: With dead ends: 14 [2018-10-01 00:26:21,160 INFO L226 Difference]: Without dead ends: 12 [2018-10-01 00:26:21,161 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:26:21,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-01 00:26:21,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-01 00:26:21,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-01 00:26:21,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-01 00:26:21,164 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-01 00:26:21,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:21,164 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-01 00:26:21,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-01 00:26:21,164 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-01 00:26:21,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-01 00:26:21,165 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:21,165 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-10-01 00:26:21,165 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:21,166 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:21,166 INFO L82 PathProgramCache]: Analyzing trace with hash -886236991, now seen corresponding path program 8 times [2018-10-01 00:26:21,166 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:21,166 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:21,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:21,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:21,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:21,446 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:21,447 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:21,447 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:21,455 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:26:21,479 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:26:21,479 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:21,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:21,591 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:21,592 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-01 00:26:21,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-01 00:26:21,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-01 00:26:21,593 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:21,593 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-10-01 00:26:21,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:21,747 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-01 00:26:21,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-01 00:26:21,748 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-10-01 00:26:21,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:21,748 INFO L225 Difference]: With dead ends: 15 [2018-10-01 00:26:21,749 INFO L226 Difference]: Without dead ends: 13 [2018-10-01 00:26:21,749 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:26:21,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-01 00:26:21,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-01 00:26:21,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-01 00:26:21,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-01 00:26:21,752 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-01 00:26:21,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:21,752 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-01 00:26:21,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-01 00:26:21,753 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-01 00:26:21,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-01 00:26:21,753 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:21,753 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-10-01 00:26:21,754 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:21,754 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:21,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1703544920, now seen corresponding path program 9 times [2018-10-01 00:26:21,754 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:21,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:21,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:21,755 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:21,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:21,871 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:21,871 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:21,872 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 [2018-10-01 00:26:21,880 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:26:21,934 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-01 00:26:21,934 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:21,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:21,976 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:21,998 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:21,998 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-01 00:26:21,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-01 00:26:21,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-01 00:26:21,999 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:21,999 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-10-01 00:26:22,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:22,082 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-01 00:26:22,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-01 00:26:22,083 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-10-01 00:26:22,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:22,084 INFO L225 Difference]: With dead ends: 16 [2018-10-01 00:26:22,084 INFO L226 Difference]: Without dead ends: 14 [2018-10-01 00:26:22,085 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:26:22,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-01 00:26:22,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-01 00:26:22,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-01 00:26:22,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-01 00:26:22,088 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-01 00:26:22,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:22,089 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-01 00:26:22,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-01 00:26:22,089 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-01 00:26:22,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-01 00:26:22,090 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:22,090 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-10-01 00:26:22,090 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:22,090 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:22,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1270286943, now seen corresponding path program 10 times [2018-10-01 00:26:22,090 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:22,091 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:22,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:22,092 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:22,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:22,257 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:22,257 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:22,258 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:22,268 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:26:22,299 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:26:22,300 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:22,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:22,368 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:22,389 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:22,389 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-01 00:26:22,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-01 00:26:22,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-01 00:26:22,390 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:22,390 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-10-01 00:26:22,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:22,477 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-01 00:26:22,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-01 00:26:22,478 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-10-01 00:26:22,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:22,479 INFO L225 Difference]: With dead ends: 17 [2018-10-01 00:26:22,479 INFO L226 Difference]: Without dead ends: 15 [2018-10-01 00:26:22,479 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:26:22,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-01 00:26:22,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-01 00:26:22,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-01 00:26:22,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-01 00:26:22,482 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-01 00:26:22,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:22,483 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-01 00:26:22,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-01 00:26:22,483 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-01 00:26:22,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-01 00:26:22,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:22,484 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-10-01 00:26:22,484 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:22,484 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:22,484 INFO L82 PathProgramCache]: Analyzing trace with hash -724191544, now seen corresponding path program 11 times [2018-10-01 00:26:22,485 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:22,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:22,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:22,486 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:22,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:22,610 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:22,611 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:22,611 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 [2018-10-01 00:26:22,620 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:26:22,724 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-01 00:26:22,725 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:22,727 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:22,953 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:22,974 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:22,974 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-01 00:26:22,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-01 00:26:22,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-01 00:26:22,975 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:22,975 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-10-01 00:26:23,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:23,070 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-01 00:26:23,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-01 00:26:23,070 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-10-01 00:26:23,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:23,071 INFO L225 Difference]: With dead ends: 18 [2018-10-01 00:26:23,071 INFO L226 Difference]: Without dead ends: 16 [2018-10-01 00:26:23,072 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:26:23,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-01 00:26:23,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-01 00:26:23,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-01 00:26:23,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-01 00:26:23,075 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-01 00:26:23,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:23,075 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-01 00:26:23,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-01 00:26:23,076 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-01 00:26:23,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-01 00:26:23,076 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:23,076 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-10-01 00:26:23,077 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:23,077 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:23,077 INFO L82 PathProgramCache]: Analyzing trace with hash -975103359, now seen corresponding path program 12 times [2018-10-01 00:26:23,077 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:23,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:23,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:23,078 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:23,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:23,232 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:23,232 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:23,232 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 [2018-10-01 00:26:23,240 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:26:23,268 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-01 00:26:23,268 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:23,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:23,343 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:23,370 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:23,371 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-01 00:26:23,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-01 00:26:23,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-01 00:26:23,371 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:23,371 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-10-01 00:26:23,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:23,482 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-01 00:26:23,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-01 00:26:23,483 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-10-01 00:26:23,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:23,484 INFO L225 Difference]: With dead ends: 19 [2018-10-01 00:26:23,484 INFO L226 Difference]: Without dead ends: 17 [2018-10-01 00:26:23,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:26:23,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-01 00:26:23,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-01 00:26:23,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-01 00:26:23,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-01 00:26:23,489 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-01 00:26:23,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:23,489 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-01 00:26:23,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-01 00:26:23,489 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-01 00:26:23,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-01 00:26:23,490 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:23,490 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-10-01 00:26:23,490 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:23,490 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:23,491 INFO L82 PathProgramCache]: Analyzing trace with hash -163435032, now seen corresponding path program 13 times [2018-10-01 00:26:23,491 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:23,491 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:23,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:23,492 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:23,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:23,648 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:23,648 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:23,648 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:23,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:23,687 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:23,745 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:23,766 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:23,766 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-01 00:26:23,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-01 00:26:23,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-01 00:26:23,767 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:23,767 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-10-01 00:26:24,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:24,103 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-01 00:26:24,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-01 00:26:24,104 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-10-01 00:26:24,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:24,104 INFO L225 Difference]: With dead ends: 20 [2018-10-01 00:26:24,105 INFO L226 Difference]: Without dead ends: 18 [2018-10-01 00:26:24,105 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:26:24,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-01 00:26:24,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-01 00:26:24,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-01 00:26:24,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-01 00:26:24,109 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-01 00:26:24,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:24,109 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-01 00:26:24,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-01 00:26:24,110 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-01 00:26:24,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-01 00:26:24,110 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:24,110 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-10-01 00:26:24,111 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:24,111 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:24,111 INFO L82 PathProgramCache]: Analyzing trace with hash -771520671, now seen corresponding path program 14 times [2018-10-01 00:26:24,111 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:24,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:24,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:24,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:24,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:24,312 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:24,313 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:24,313 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:24,321 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:26:24,367 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:26:24,368 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:24,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:24,489 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:24,509 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:24,510 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-01 00:26:24,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-01 00:26:24,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-01 00:26:24,510 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:24,510 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-10-01 00:26:24,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:24,836 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-01 00:26:24,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-01 00:26:24,836 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-10-01 00:26:24,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:24,837 INFO L225 Difference]: With dead ends: 21 [2018-10-01 00:26:24,838 INFO L226 Difference]: Without dead ends: 19 [2018-10-01 00:26:24,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:26:24,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-01 00:26:24,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-01 00:26:24,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-01 00:26:24,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-01 00:26:24,843 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-01 00:26:24,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:24,843 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-01 00:26:24,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-01 00:26:24,843 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-01 00:26:24,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-01 00:26:24,844 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:24,844 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-10-01 00:26:24,844 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:24,844 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:24,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1852661000, now seen corresponding path program 15 times [2018-10-01 00:26:24,845 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:24,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:24,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:24,846 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:24,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:25,292 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:25,293 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:25,293 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:25,302 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:26:25,388 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-01 00:26:25,389 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:25,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:25,490 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:25,490 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-01 00:26:25,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-01 00:26:25,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-01 00:26:25,491 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:25,491 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-10-01 00:26:25,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:25,639 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-01 00:26:25,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-01 00:26:25,639 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-10-01 00:26:25,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:25,640 INFO L225 Difference]: With dead ends: 22 [2018-10-01 00:26:25,640 INFO L226 Difference]: Without dead ends: 20 [2018-10-01 00:26:25,640 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:26:25,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-01 00:26:25,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-01 00:26:25,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-01 00:26:25,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-01 00:26:25,644 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-01 00:26:25,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:25,645 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-01 00:26:25,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-01 00:26:25,645 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-01 00:26:25,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-01 00:26:25,646 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:25,646 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-10-01 00:26:25,646 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:25,646 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:25,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1597914177, now seen corresponding path program 16 times [2018-10-01 00:26:25,646 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:25,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:25,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:25,647 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:25,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:25,799 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:25,799 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:25,799 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 [2018-10-01 00:26:25,810 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:26:25,848 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:26:25,849 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:25,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:25,906 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:25,927 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:25,928 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-01 00:26:25,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-01 00:26:25,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-01 00:26:25,928 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:25,928 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-10-01 00:26:26,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:26,097 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-01 00:26:26,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-01 00:26:26,098 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-10-01 00:26:26,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:26,099 INFO L225 Difference]: With dead ends: 23 [2018-10-01 00:26:26,099 INFO L226 Difference]: Without dead ends: 21 [2018-10-01 00:26:26,099 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:26:26,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-01 00:26:26,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-01 00:26:26,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-01 00:26:26,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-01 00:26:26,102 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-10-01 00:26:26,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:26,102 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-01 00:26:26,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-01 00:26:26,102 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-01 00:26:26,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-01 00:26:26,103 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:26,103 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-10-01 00:26:26,103 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:26,103 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:26,104 INFO L82 PathProgramCache]: Analyzing trace with hash -2004270040, now seen corresponding path program 17 times [2018-10-01 00:26:26,104 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:26,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:26,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:26,105 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:26,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:26,925 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:26,926 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:26,926 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:26,934 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:26:27,037 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-01 00:26:27,038 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:27,040 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:27,143 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:27,164 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:27,164 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-01 00:26:27,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-01 00:26:27,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-01 00:26:27,165 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:27,165 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-10-01 00:26:27,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:27,284 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-01 00:26:27,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-01 00:26:27,284 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-10-01 00:26:27,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:27,285 INFO L225 Difference]: With dead ends: 24 [2018-10-01 00:26:27,285 INFO L226 Difference]: Without dead ends: 22 [2018-10-01 00:26:27,286 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:26:27,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-01 00:26:27,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-01 00:26:27,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-01 00:26:27,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-01 00:26:27,291 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-10-01 00:26:27,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:27,291 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-01 00:26:27,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-01 00:26:27,291 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-01 00:26:27,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-01 00:26:27,292 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:27,292 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-10-01 00:26:27,292 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:27,292 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:27,292 INFO L82 PathProgramCache]: Analyzing trace with hash -2002831071, now seen corresponding path program 18 times [2018-10-01 00:26:27,293 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:27,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:27,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:27,294 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:27,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:27,459 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:27,460 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:27,460 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 [2018-10-01 00:26:27,471 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:26:27,504 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-01 00:26:27,504 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:27,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:27,600 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:27,600 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-01 00:26:27,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-01 00:26:27,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-01 00:26:27,601 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:27,601 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-10-01 00:26:27,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:27,741 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-01 00:26:27,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-01 00:26:27,741 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-10-01 00:26:27,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:27,742 INFO L225 Difference]: With dead ends: 25 [2018-10-01 00:26:27,743 INFO L226 Difference]: Without dead ends: 23 [2018-10-01 00:26:27,743 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:26:27,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-01 00:26:27,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-01 00:26:27,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-01 00:26:27,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-01 00:26:27,747 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-10-01 00:26:27,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:27,747 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-01 00:26:27,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-01 00:26:27,747 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-01 00:26:27,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-01 00:26:27,748 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:27,748 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-10-01 00:26:27,748 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:27,748 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:27,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1958223032, now seen corresponding path program 19 times [2018-10-01 00:26:27,749 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:27,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:27,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:27,750 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:27,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:27,888 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:27,889 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:27,889 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 [2018-10-01 00:26:27,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:27,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:28,146 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:28,166 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:28,167 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-01 00:26:28,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-01 00:26:28,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-01 00:26:28,167 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:28,167 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-10-01 00:26:28,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:28,379 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-01 00:26:28,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-01 00:26:28,380 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-10-01 00:26:28,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:28,381 INFO L225 Difference]: With dead ends: 26 [2018-10-01 00:26:28,381 INFO L226 Difference]: Without dead ends: 24 [2018-10-01 00:26:28,381 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:26:28,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-01 00:26:28,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-01 00:26:28,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-01 00:26:28,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-01 00:26:28,384 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-10-01 00:26:28,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:28,384 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-01 00:26:28,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-01 00:26:28,385 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-01 00:26:28,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-01 00:26:28,385 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:28,385 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-10-01 00:26:28,386 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:28,386 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:28,386 INFO L82 PathProgramCache]: Analyzing trace with hash -575373823, now seen corresponding path program 20 times [2018-10-01 00:26:28,386 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:28,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:28,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:28,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:28,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:28,707 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:28,708 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:28,708 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 [2018-10-01 00:26:28,716 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:26:28,747 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:26:28,748 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:28,750 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:28,789 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:28,810 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:28,810 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-01 00:26:28,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-01 00:26:28,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-01 00:26:28,811 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:28,811 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-10-01 00:26:28,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:28,940 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-01 00:26:28,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-01 00:26:28,941 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-10-01 00:26:28,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:28,941 INFO L225 Difference]: With dead ends: 27 [2018-10-01 00:26:28,942 INFO L226 Difference]: Without dead ends: 25 [2018-10-01 00:26:28,942 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:26:28,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-01 00:26:28,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-01 00:26:28,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-01 00:26:28,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-01 00:26:28,945 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-10-01 00:26:28,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:28,946 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-01 00:26:28,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-01 00:26:28,946 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-01 00:26:28,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-01 00:26:28,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:28,947 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-10-01 00:26:28,947 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:28,947 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:28,947 INFO L82 PathProgramCache]: Analyzing trace with hash -656721304, now seen corresponding path program 21 times [2018-10-01 00:26:28,947 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:28,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:28,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:28,948 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:28,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:29,197 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:29,197 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 [2018-10-01 00:26:29,205 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:26:29,242 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-01 00:26:29,242 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:29,244 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:29,608 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:29,643 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:29,643 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-01 00:26:29,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-01 00:26:29,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-01 00:26:29,644 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:29,644 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-10-01 00:26:29,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:29,984 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-01 00:26:29,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-01 00:26:29,988 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-10-01 00:26:29,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:29,988 INFO L225 Difference]: With dead ends: 28 [2018-10-01 00:26:29,988 INFO L226 Difference]: Without dead ends: 26 [2018-10-01 00:26:29,989 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:26:29,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-01 00:26:29,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-01 00:26:29,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-01 00:26:29,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-01 00:26:29,991 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-10-01 00:26:29,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:29,992 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-01 00:26:29,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-01 00:26:29,992 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-01 00:26:29,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-01 00:26:29,992 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:29,993 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-10-01 00:26:29,993 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:29,993 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:29,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1116474081, now seen corresponding path program 22 times [2018-10-01 00:26:29,993 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:29,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:29,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:29,994 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:29,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:30,323 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:30,323 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 [2018-10-01 00:26:30,330 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:26:30,366 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:26:30,366 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:30,368 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:30,594 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:30,615 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:30,615 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-01 00:26:30,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-01 00:26:30,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-01 00:26:30,616 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:30,616 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-10-01 00:26:30,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:30,745 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-01 00:26:30,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-01 00:26:30,745 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-10-01 00:26:30,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:30,746 INFO L225 Difference]: With dead ends: 29 [2018-10-01 00:26:30,746 INFO L226 Difference]: Without dead ends: 27 [2018-10-01 00:26:30,747 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:26:30,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-01 00:26:30,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-01 00:26:30,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-01 00:26:30,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-01 00:26:30,751 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-10-01 00:26:30,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:30,751 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-01 00:26:30,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-01 00:26:30,751 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-01 00:26:30,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-01 00:26:30,752 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:30,752 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-10-01 00:26:30,752 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:30,752 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:30,753 INFO L82 PathProgramCache]: Analyzing trace with hash 250956168, now seen corresponding path program 23 times [2018-10-01 00:26:30,753 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:30,753 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:30,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:30,754 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:30,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:31,028 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:31,028 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:31,028 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 [2018-10-01 00:26:31,037 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:26:31,155 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-01 00:26:31,156 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:31,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:31,219 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:31,241 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:31,241 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-01 00:26:31,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-01 00:26:31,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-01 00:26:31,242 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:31,242 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-10-01 00:26:31,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:31,354 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-01 00:26:31,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-01 00:26:31,355 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-10-01 00:26:31,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:31,356 INFO L225 Difference]: With dead ends: 30 [2018-10-01 00:26:31,356 INFO L226 Difference]: Without dead ends: 28 [2018-10-01 00:26:31,356 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:26:31,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-01 00:26:31,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-01 00:26:31,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-01 00:26:31,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-01 00:26:31,360 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-10-01 00:26:31,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:31,360 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-01 00:26:31,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-01 00:26:31,361 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-01 00:26:31,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-01 00:26:31,361 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:31,361 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-10-01 00:26:31,362 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:31,362 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:31,362 INFO L82 PathProgramCache]: Analyzing trace with hash -810295359, now seen corresponding path program 24 times [2018-10-01 00:26:31,362 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:31,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:31,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:31,363 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:31,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:31,577 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:31,578 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:31,578 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:31,585 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:26:31,653 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-01 00:26:31,653 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:31,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:31,833 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:31,834 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-01 00:26:31,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-01 00:26:31,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-01 00:26:31,834 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:31,835 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-10-01 00:26:31,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:31,984 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-01 00:26:31,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-01 00:26:31,985 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-10-01 00:26:31,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:31,985 INFO L225 Difference]: With dead ends: 31 [2018-10-01 00:26:31,985 INFO L226 Difference]: Without dead ends: 29 [2018-10-01 00:26:31,986 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:26:31,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-01 00:26:31,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-01 00:26:31,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-01 00:26:31,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-01 00:26:31,990 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-10-01 00:26:31,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:31,990 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-01 00:26:31,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-01 00:26:31,990 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-01 00:26:31,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-01 00:26:31,991 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:31,991 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-10-01 00:26:31,991 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:31,991 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:31,992 INFO L82 PathProgramCache]: Analyzing trace with hash 650645672, now seen corresponding path program 25 times [2018-10-01 00:26:31,992 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:31,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:31,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:31,993 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:31,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:32,195 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:32,195 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:32,195 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:32,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:32,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:32,343 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:32,364 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:32,364 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-01 00:26:32,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-01 00:26:32,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-01 00:26:32,364 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:32,365 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-10-01 00:26:32,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:32,531 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-01 00:26:32,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-01 00:26:32,531 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-10-01 00:26:32,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:32,532 INFO L225 Difference]: With dead ends: 32 [2018-10-01 00:26:32,532 INFO L226 Difference]: Without dead ends: 30 [2018-10-01 00:26:32,532 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:26:32,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-01 00:26:32,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-01 00:26:32,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-01 00:26:32,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-01 00:26:32,536 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-01 00:26:32,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:32,536 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-01 00:26:32,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-01 00:26:32,536 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-01 00:26:32,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-01 00:26:32,537 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:32,537 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-10-01 00:26:32,537 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:32,537 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:32,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1304822623, now seen corresponding path program 26 times [2018-10-01 00:26:32,537 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:32,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:32,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:32,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:32,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:33,408 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:33,408 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:33,408 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 [2018-10-01 00:26:33,421 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:26:33,462 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:26:33,462 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:33,464 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:33,575 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:33,575 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-01 00:26:33,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-01 00:26:33,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-01 00:26:33,576 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:33,576 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-10-01 00:26:33,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:33,784 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-01 00:26:33,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-01 00:26:33,785 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-10-01 00:26:33,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:33,786 INFO L225 Difference]: With dead ends: 33 [2018-10-01 00:26:33,786 INFO L226 Difference]: Without dead ends: 31 [2018-10-01 00:26:33,786 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:26:33,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-01 00:26:33,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-01 00:26:33,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-01 00:26:33,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-01 00:26:33,790 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-10-01 00:26:33,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:33,790 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-01 00:26:33,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-01 00:26:33,791 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-01 00:26:33,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-01 00:26:33,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:33,791 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-10-01 00:26:33,791 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:33,792 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:33,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1794797624, now seen corresponding path program 27 times [2018-10-01 00:26:33,792 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:33,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:33,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:33,793 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:33,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:34,093 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:34,093 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:34,102 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:26:34,148 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-01 00:26:34,148 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:34,150 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:34,219 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:34,240 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:34,240 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-01 00:26:34,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-01 00:26:34,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-01 00:26:34,241 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:34,241 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-10-01 00:26:34,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:34,422 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-01 00:26:34,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-01 00:26:34,422 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-10-01 00:26:34,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:34,423 INFO L225 Difference]: With dead ends: 34 [2018-10-01 00:26:34,423 INFO L226 Difference]: Without dead ends: 32 [2018-10-01 00:26:34,423 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:26:34,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-01 00:26:34,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-01 00:26:34,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-01 00:26:34,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-01 00:26:34,428 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-10-01 00:26:34,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:34,428 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-01 00:26:34,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-01 00:26:34,428 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-01 00:26:34,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-01 00:26:34,429 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:34,429 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-10-01 00:26:34,429 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:34,429 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:34,429 INFO L82 PathProgramCache]: Analyzing trace with hash 195846529, now seen corresponding path program 28 times [2018-10-01 00:26:34,430 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:34,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:34,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:34,430 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:34,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:34,882 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:34,883 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:34,883 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 [2018-10-01 00:26:34,897 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:26:34,941 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:26:34,941 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:34,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:35,049 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:35,049 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-01 00:26:35,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-01 00:26:35,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-01 00:26:35,050 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:35,050 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-10-01 00:26:35,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:35,261 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-01 00:26:35,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-01 00:26:35,261 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-10-01 00:26:35,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:35,262 INFO L225 Difference]: With dead ends: 35 [2018-10-01 00:26:35,262 INFO L226 Difference]: Without dead ends: 33 [2018-10-01 00:26:35,262 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:26:35,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-01 00:26:35,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-01 00:26:35,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-01 00:26:35,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-01 00:26:35,265 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-10-01 00:26:35,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:35,265 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-01 00:26:35,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-01 00:26:35,265 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-01 00:26:35,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-01 00:26:35,269 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:35,269 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-10-01 00:26:35,269 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:35,269 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:35,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1776273128, now seen corresponding path program 29 times [2018-10-01 00:26:35,269 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:35,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:35,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:35,270 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:35,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:35,640 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:35,640 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 [2018-10-01 00:26:35,647 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:26:35,697 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-01 00:26:35,697 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:35,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:35,770 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:35,790 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:35,790 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-01 00:26:35,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-01 00:26:35,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-01 00:26:35,791 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:35,791 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-10-01 00:26:35,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:35,936 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-01 00:26:35,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-01 00:26:35,936 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-10-01 00:26:35,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:35,937 INFO L225 Difference]: With dead ends: 36 [2018-10-01 00:26:35,937 INFO L226 Difference]: Without dead ends: 34 [2018-10-01 00:26:35,938 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:26:35,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-01 00:26:35,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-01 00:26:35,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-01 00:26:35,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-01 00:26:35,941 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-10-01 00:26:35,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:35,941 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-01 00:26:35,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-01 00:26:35,942 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-01 00:26:35,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-01 00:26:35,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:35,942 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-10-01 00:26:35,942 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:35,943 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:35,943 INFO L82 PathProgramCache]: Analyzing trace with hash -770109855, now seen corresponding path program 30 times [2018-10-01 00:26:35,943 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:35,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:35,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:35,943 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:35,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:36,203 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:36,204 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:36,204 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:36,213 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:26:36,271 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-01 00:26:36,271 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:36,274 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:36,372 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:36,392 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:36,393 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-01 00:26:36,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-01 00:26:36,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-01 00:26:36,393 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:36,393 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-10-01 00:26:36,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:36,714 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-01 00:26:36,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-01 00:26:36,714 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-10-01 00:26:36,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:36,715 INFO L225 Difference]: With dead ends: 37 [2018-10-01 00:26:36,715 INFO L226 Difference]: Without dead ends: 35 [2018-10-01 00:26:36,716 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:26:36,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-01 00:26:36,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-01 00:26:36,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-01 00:26:36,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-01 00:26:36,719 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-10-01 00:26:36,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:36,719 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-01 00:26:36,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-01 00:26:36,719 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-01 00:26:36,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-01 00:26:36,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:36,719 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-10-01 00:26:36,720 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:36,720 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:36,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1896396296, now seen corresponding path program 31 times [2018-10-01 00:26:36,720 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:36,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:36,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:36,721 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:36,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:37,132 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:37,133 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:37,133 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 [2018-10-01 00:26:37,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:37,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:37,262 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:37,283 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:37,283 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-01 00:26:37,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-01 00:26:37,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-01 00:26:37,284 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:37,284 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-10-01 00:26:37,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:37,465 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-01 00:26:37,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-01 00:26:37,466 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-10-01 00:26:37,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:37,466 INFO L225 Difference]: With dead ends: 38 [2018-10-01 00:26:37,467 INFO L226 Difference]: Without dead ends: 36 [2018-10-01 00:26:37,467 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:26:37,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-01 00:26:37,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-01 00:26:37,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-01 00:26:37,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-01 00:26:37,471 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-10-01 00:26:37,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:37,471 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-01 00:26:37,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-01 00:26:37,472 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-01 00:26:37,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-01 00:26:37,472 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:37,472 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-10-01 00:26:37,473 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:37,473 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:37,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1341258943, now seen corresponding path program 32 times [2018-10-01 00:26:37,473 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:37,473 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:37,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:37,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:37,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:38,931 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:38,931 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:38,932 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:38,938 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:26:38,986 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:26:38,987 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:38,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:39,067 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:39,088 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:39,088 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-01 00:26:39,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-01 00:26:39,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-01 00:26:39,089 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:39,089 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-10-01 00:26:39,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:39,290 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-01 00:26:39,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-01 00:26:39,290 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-10-01 00:26:39,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:39,291 INFO L225 Difference]: With dead ends: 39 [2018-10-01 00:26:39,291 INFO L226 Difference]: Without dead ends: 37 [2018-10-01 00:26:39,291 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:26:39,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-01 00:26:39,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-01 00:26:39,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-01 00:26:39,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-01 00:26:39,295 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-10-01 00:26:39,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:39,295 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-01 00:26:39,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-01 00:26:39,295 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-01 00:26:39,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-01 00:26:39,296 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:39,296 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-10-01 00:26:39,296 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:39,296 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:39,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1370643752, now seen corresponding path program 33 times [2018-10-01 00:26:39,296 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:39,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:39,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:39,297 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:39,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:39,576 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:39,576 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:39,576 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 [2018-10-01 00:26:39,585 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:26:39,650 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-01 00:26:39,650 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:39,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:39,742 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:39,763 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:39,763 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-01 00:26:39,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-01 00:26:39,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-01 00:26:39,764 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:39,764 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-10-01 00:26:39,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:39,936 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-01 00:26:39,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-01 00:26:39,936 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-10-01 00:26:39,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:39,937 INFO L225 Difference]: With dead ends: 40 [2018-10-01 00:26:39,937 INFO L226 Difference]: Without dead ends: 38 [2018-10-01 00:26:39,937 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:26:39,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-01 00:26:39,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-01 00:26:39,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-01 00:26:39,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-01 00:26:39,940 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-10-01 00:26:39,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:39,940 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-01 00:26:39,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-01 00:26:39,941 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-01 00:26:39,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-01 00:26:39,941 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:39,941 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-10-01 00:26:39,941 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:39,941 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:39,941 INFO L82 PathProgramCache]: Analyzing trace with hash -459718623, now seen corresponding path program 34 times [2018-10-01 00:26:39,941 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:39,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:39,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:39,942 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:39,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:40,268 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:40,268 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:40,268 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 [2018-10-01 00:26:40,283 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:26:40,341 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:26:40,341 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:40,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:40,617 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:40,638 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:40,638 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-01 00:26:40,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-01 00:26:40,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-01 00:26:40,639 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:40,639 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-10-01 00:26:40,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:40,882 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-01 00:26:40,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-01 00:26:40,883 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-10-01 00:26:40,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:40,883 INFO L225 Difference]: With dead ends: 41 [2018-10-01 00:26:40,883 INFO L226 Difference]: Without dead ends: 39 [2018-10-01 00:26:40,884 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:26:40,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-01 00:26:40,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-01 00:26:40,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-01 00:26:40,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-01 00:26:40,888 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-10-01 00:26:40,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:40,888 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-01 00:26:40,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-01 00:26:40,888 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-01 00:26:40,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-01 00:26:40,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:40,889 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-10-01 00:26:40,889 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:40,889 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:40,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1366377400, now seen corresponding path program 35 times [2018-10-01 00:26:40,889 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:40,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:40,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:40,890 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:40,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:41,173 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:41,173 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:41,173 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:41,181 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:26:41,240 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-01 00:26:41,241 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:41,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:41,327 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:41,349 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:41,349 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-01 00:26:41,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-01 00:26:41,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-01 00:26:41,350 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:41,350 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-10-01 00:26:41,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:41,597 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-01 00:26:41,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-01 00:26:41,598 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-10-01 00:26:41,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:41,598 INFO L225 Difference]: With dead ends: 42 [2018-10-01 00:26:41,598 INFO L226 Difference]: Without dead ends: 40 [2018-10-01 00:26:41,599 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:26:41,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-01 00:26:41,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-01 00:26:41,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-01 00:26:41,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-01 00:26:41,602 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-10-01 00:26:41,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:41,602 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-01 00:26:41,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-01 00:26:41,602 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-01 00:26:41,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-01 00:26:41,602 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:41,603 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-10-01 00:26:41,603 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:41,603 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:41,603 INFO L82 PathProgramCache]: Analyzing trace with hash 591971585, now seen corresponding path program 36 times [2018-10-01 00:26:41,603 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:41,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:41,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:41,604 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:41,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:41,957 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:41,957 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:41,957 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 [2018-10-01 00:26:41,965 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:26:42,031 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-01 00:26:42,031 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:42,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:42,590 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:42,610 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:42,611 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-01 00:26:42,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-01 00:26:42,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-01 00:26:42,611 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:42,611 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-10-01 00:26:42,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:42,847 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-01 00:26:42,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-01 00:26:42,847 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-10-01 00:26:42,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:42,848 INFO L225 Difference]: With dead ends: 43 [2018-10-01 00:26:42,848 INFO L226 Difference]: Without dead ends: 41 [2018-10-01 00:26:42,849 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:26:42,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-01 00:26:42,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-01 00:26:42,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-01 00:26:42,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-01 00:26:42,852 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-10-01 00:26:42,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:42,852 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-01 00:26:42,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-01 00:26:42,852 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-01 00:26:42,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-01 00:26:42,852 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:42,853 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-10-01 00:26:42,853 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:42,853 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:42,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1171247976, now seen corresponding path program 37 times [2018-10-01 00:26:42,853 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:42,853 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:42,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:42,854 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:42,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:43,626 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:43,626 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:43,626 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:43,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:43,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:43,782 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:43,802 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:43,803 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-01 00:26:43,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-01 00:26:43,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-01 00:26:43,803 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:43,803 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-10-01 00:26:44,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:44,076 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-01 00:26:44,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-01 00:26:44,077 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-10-01 00:26:44,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:44,078 INFO L225 Difference]: With dead ends: 44 [2018-10-01 00:26:44,078 INFO L226 Difference]: Without dead ends: 42 [2018-10-01 00:26:44,078 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:26:44,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-01 00:26:44,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-01 00:26:44,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-01 00:26:44,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-01 00:26:44,081 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-10-01 00:26:44,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:44,081 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-01 00:26:44,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-01 00:26:44,082 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-01 00:26:44,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-01 00:26:44,082 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:44,082 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-10-01 00:26:44,082 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:44,083 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:44,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1948946913, now seen corresponding path program 38 times [2018-10-01 00:26:44,083 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:44,083 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:44,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:44,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:44,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:45,811 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:45,812 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:45,819 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:26:45,882 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:26:45,883 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:45,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:45,993 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:46,013 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:46,013 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-01 00:26:46,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-01 00:26:46,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-01 00:26:46,014 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:46,014 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-10-01 00:26:46,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:46,277 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-01 00:26:46,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-01 00:26:46,277 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-10-01 00:26:46,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:46,278 INFO L225 Difference]: With dead ends: 45 [2018-10-01 00:26:46,278 INFO L226 Difference]: Without dead ends: 43 [2018-10-01 00:26:46,278 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:26:46,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-01 00:26:46,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-01 00:26:46,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-01 00:26:46,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-01 00:26:46,281 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-10-01 00:26:46,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:46,282 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-01 00:26:46,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-01 00:26:46,282 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-01 00:26:46,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-01 00:26:46,282 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:46,283 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-10-01 00:26:46,297 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:46,298 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:46,298 INFO L82 PathProgramCache]: Analyzing trace with hash 287810184, now seen corresponding path program 39 times [2018-10-01 00:26:46,298 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:46,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:46,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:46,299 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:46,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:46,904 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:46,904 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:46,905 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 [2018-10-01 00:26:46,913 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:26:46,980 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-01 00:26:46,981 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:46,984 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:47,058 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:47,078 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:47,079 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-01 00:26:47,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-01 00:26:47,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-01 00:26:47,079 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:47,079 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-10-01 00:26:47,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:47,380 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-01 00:26:47,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-01 00:26:47,381 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-10-01 00:26:47,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:47,381 INFO L225 Difference]: With dead ends: 46 [2018-10-01 00:26:47,381 INFO L226 Difference]: Without dead ends: 44 [2018-10-01 00:26:47,382 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:26:47,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-01 00:26:47,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-01 00:26:47,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-01 00:26:47,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-01 00:26:47,383 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-10-01 00:26:47,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:47,383 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-01 00:26:47,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-01 00:26:47,384 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-01 00:26:47,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-01 00:26:47,384 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:47,384 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-10-01 00:26:47,384 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:47,384 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:47,384 INFO L82 PathProgramCache]: Analyzing trace with hash 332179137, now seen corresponding path program 40 times [2018-10-01 00:26:47,384 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:47,385 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:47,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:47,385 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:47,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:47,941 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:47,941 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:47,941 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:47,949 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:26:48,010 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:26:48,010 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:48,012 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:48,118 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:48,139 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:48,140 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-01 00:26:48,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-01 00:26:48,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-01 00:26:48,140 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:48,140 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-10-01 00:26:48,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:48,415 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-01 00:26:48,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-01 00:26:48,415 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-10-01 00:26:48,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:48,416 INFO L225 Difference]: With dead ends: 47 [2018-10-01 00:26:48,416 INFO L226 Difference]: Without dead ends: 45 [2018-10-01 00:26:48,417 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:26:48,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-01 00:26:48,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-01 00:26:48,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-01 00:26:48,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-01 00:26:48,419 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-10-01 00:26:48,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:48,419 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-01 00:26:48,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-01 00:26:48,419 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-01 00:26:48,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-01 00:26:48,420 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:48,420 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-10-01 00:26:48,420 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:48,420 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:48,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1707616680, now seen corresponding path program 41 times [2018-10-01 00:26:48,420 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:48,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:48,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:48,421 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:48,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:49,050 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:49,050 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:49,050 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 [2018-10-01 00:26:49,058 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:26:49,142 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-01 00:26:49,142 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:49,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:49,245 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:49,267 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:49,267 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-01 00:26:49,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-01 00:26:49,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-01 00:26:49,268 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:49,268 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-10-01 00:26:49,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:49,604 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-10-01 00:26:49,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-01 00:26:49,605 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-10-01 00:26:49,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:49,605 INFO L225 Difference]: With dead ends: 48 [2018-10-01 00:26:49,606 INFO L226 Difference]: Without dead ends: 46 [2018-10-01 00:26:49,606 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:26:49,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-01 00:26:49,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-01 00:26:49,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-01 00:26:49,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-01 00:26:49,608 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-10-01 00:26:49,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:49,608 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-01 00:26:49,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-01 00:26:49,609 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-01 00:26:49,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-01 00:26:49,609 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:49,609 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-10-01 00:26:49,609 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:49,609 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:49,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1396507553, now seen corresponding path program 42 times [2018-10-01 00:26:49,610 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:49,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:49,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:49,610 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:49,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:49,928 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:49,929 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:49,929 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 [2018-10-01 00:26:49,944 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:26:50,017 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-01 00:26:50,017 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:50,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:50,138 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:50,160 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:50,160 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-01 00:26:50,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-01 00:26:50,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-01 00:26:50,161 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:50,161 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-10-01 00:26:50,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:50,425 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-01 00:26:50,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-01 00:26:50,425 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-10-01 00:26:50,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:50,426 INFO L225 Difference]: With dead ends: 49 [2018-10-01 00:26:50,426 INFO L226 Difference]: Without dead ends: 47 [2018-10-01 00:26:50,426 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:26:50,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-01 00:26:50,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-01 00:26:50,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-01 00:26:50,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-01 00:26:50,429 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-10-01 00:26:50,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:50,429 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-01 00:26:50,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-01 00:26:50,430 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-01 00:26:50,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-01 00:26:50,430 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:50,430 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-10-01 00:26:50,430 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:50,430 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:50,431 INFO L82 PathProgramCache]: Analyzing trace with hash 342059208, now seen corresponding path program 43 times [2018-10-01 00:26:50,431 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:50,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:50,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:50,432 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:50,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:50,923 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:50,924 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:50,924 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:50,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:51,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:51,072 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:51,092 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:51,092 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-01 00:26:51,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-01 00:26:51,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-01 00:26:51,093 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:51,093 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-10-01 00:26:51,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:51,369 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-01 00:26:51,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-01 00:26:51,369 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-10-01 00:26:51,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:51,370 INFO L225 Difference]: With dead ends: 50 [2018-10-01 00:26:51,370 INFO L226 Difference]: Without dead ends: 48 [2018-10-01 00:26:51,370 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:26:51,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-01 00:26:51,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-01 00:26:51,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-01 00:26:51,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-01 00:26:51,374 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-10-01 00:26:51,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:51,374 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-01 00:26:51,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-01 00:26:51,374 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-01 00:26:51,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-01 00:26:51,375 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:51,375 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-10-01 00:26:51,375 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:51,375 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:51,375 INFO L82 PathProgramCache]: Analyzing trace with hash 2013898881, now seen corresponding path program 44 times [2018-10-01 00:26:51,375 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:51,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:51,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:51,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:51,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:51,643 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:51,643 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 [2018-10-01 00:26:51,650 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:26:51,715 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:26:51,715 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:51,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:51,803 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:51,823 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:51,823 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-01 00:26:51,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-01 00:26:51,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-01 00:26:51,823 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:51,823 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-10-01 00:26:52,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:52,202 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-01 00:26:52,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-01 00:26:52,202 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-10-01 00:26:52,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:52,203 INFO L225 Difference]: With dead ends: 51 [2018-10-01 00:26:52,203 INFO L226 Difference]: Without dead ends: 49 [2018-10-01 00:26:52,203 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:26:52,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-01 00:26:52,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-01 00:26:52,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-01 00:26:52,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-01 00:26:52,209 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-10-01 00:26:52,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:52,209 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-01 00:26:52,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-01 00:26:52,209 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-01 00:26:52,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-01 00:26:52,210 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:52,210 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-10-01 00:26:52,210 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:52,210 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:52,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1993646104, now seen corresponding path program 45 times [2018-10-01 00:26:52,211 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:52,211 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:52,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:52,212 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:52,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:52,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:52,632 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:52,632 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 [2018-10-01 00:26:52,640 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:26:52,715 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-01 00:26:52,715 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:52,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:52,904 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:52,904 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-01 00:26:52,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-01 00:26:52,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-01 00:26:52,905 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:52,905 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-10-01 00:26:53,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:53,294 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-01 00:26:53,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-01 00:26:53,295 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-10-01 00:26:53,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:53,296 INFO L225 Difference]: With dead ends: 52 [2018-10-01 00:26:53,296 INFO L226 Difference]: Without dead ends: 50 [2018-10-01 00:26:53,296 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:26:53,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-01 00:26:53,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-01 00:26:53,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-01 00:26:53,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-01 00:26:53,299 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-10-01 00:26:53,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:53,299 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-01 00:26:53,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-01 00:26:53,299 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-01 00:26:53,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-01 00:26:53,299 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:53,300 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-10-01 00:26:53,300 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:53,300 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:53,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1673489055, now seen corresponding path program 46 times [2018-10-01 00:26:53,300 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:53,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:53,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:53,301 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:53,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:53,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:53,707 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:53,708 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 [2018-10-01 00:26:53,715 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:26:53,784 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:26:53,784 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:53,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:53,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:53,919 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:53,919 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-01 00:26:53,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-01 00:26:53,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-01 00:26:53,919 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:53,920 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-10-01 00:26:54,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:54,224 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-01 00:26:54,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-01 00:26:54,224 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-10-01 00:26:54,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:54,225 INFO L225 Difference]: With dead ends: 53 [2018-10-01 00:26:54,225 INFO L226 Difference]: Without dead ends: 51 [2018-10-01 00:26:54,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:26:54,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-01 00:26:54,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-01 00:26:54,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-01 00:26:54,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-01 00:26:54,227 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-10-01 00:26:54,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:54,228 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-01 00:26:54,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-01 00:26:54,228 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-01 00:26:54,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-01 00:26:54,228 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:54,228 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-10-01 00:26:54,229 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:54,229 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:54,229 INFO L82 PathProgramCache]: Analyzing trace with hash -338555128, now seen corresponding path program 47 times [2018-10-01 00:26:54,229 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:54,229 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:54,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:54,230 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:54,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:54,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:54,593 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:54,593 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 [2018-10-01 00:26:54,600 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:26:54,681 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-01 00:26:54,681 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:54,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:54,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:54,813 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:54,814 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-01 00:26:54,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-01 00:26:54,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-01 00:26:54,814 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:54,814 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-10-01 00:26:55,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:55,073 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-01 00:26:55,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-01 00:26:55,073 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-10-01 00:26:55,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:55,074 INFO L225 Difference]: With dead ends: 54 [2018-10-01 00:26:55,074 INFO L226 Difference]: Without dead ends: 52 [2018-10-01 00:26:55,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:26:55,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-01 00:26:55,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-01 00:26:55,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-01 00:26:55,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-01 00:26:55,077 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-10-01 00:26:55,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:55,078 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-01 00:26:55,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-01 00:26:55,078 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-01 00:26:55,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-01 00:26:55,078 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:55,078 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-10-01 00:26:55,079 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:55,079 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:55,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1905276351, now seen corresponding path program 48 times [2018-10-01 00:26:55,079 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:55,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:55,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:55,080 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:55,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:55,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:55,358 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:55,358 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 [2018-10-01 00:26:55,365 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:26:55,446 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-01 00:26:55,446 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:55,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:55,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:55,562 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:55,562 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-01 00:26:55,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-01 00:26:55,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-01 00:26:55,563 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:55,563 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-10-01 00:26:55,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:55,961 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-01 00:26:55,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-01 00:26:55,962 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-10-01 00:26:55,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:55,962 INFO L225 Difference]: With dead ends: 55 [2018-10-01 00:26:55,962 INFO L226 Difference]: Without dead ends: 53 [2018-10-01 00:26:55,962 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:26:55,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-01 00:26:55,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-01 00:26:55,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-01 00:26:55,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-01 00:26:55,964 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-10-01 00:26:55,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:55,965 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-01 00:26:55,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-01 00:26:55,965 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-01 00:26:55,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-01 00:26:55,966 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:55,966 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-10-01 00:26:55,966 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:55,966 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:55,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1065973288, now seen corresponding path program 49 times [2018-10-01 00:26:55,966 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:55,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:55,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:55,967 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:55,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:56,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:56,968 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:56,968 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:56,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:57,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:57,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:57,171 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:57,171 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-01 00:26:57,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-01 00:26:57,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-01 00:26:57,172 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:57,172 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-10-01 00:26:57,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:57,431 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-10-01 00:26:57,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-01 00:26:57,432 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-10-01 00:26:57,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:57,432 INFO L225 Difference]: With dead ends: 56 [2018-10-01 00:26:57,432 INFO L226 Difference]: Without dead ends: 54 [2018-10-01 00:26:57,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:26:57,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-01 00:26:57,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-01 00:26:57,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-01 00:26:57,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-01 00:26:57,434 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-10-01 00:26:57,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:57,434 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-01 00:26:57,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-01 00:26:57,435 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-01 00:26:57,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-01 00:26:57,435 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:57,435 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-10-01 00:26:57,435 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:57,435 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:57,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1314568415, now seen corresponding path program 50 times [2018-10-01 00:26:57,436 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:57,436 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:57,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:57,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:57,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:57,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:57,825 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:57,825 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:57,834 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:26:57,907 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:26:57,908 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:57,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:58,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:58,028 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:58,028 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-01 00:26:58,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-01 00:26:58,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-01 00:26:58,029 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:58,029 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-10-01 00:26:58,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:58,317 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-01 00:26:58,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-01 00:26:58,318 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-10-01 00:26:58,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:58,319 INFO L225 Difference]: With dead ends: 57 [2018-10-01 00:26:58,319 INFO L226 Difference]: Without dead ends: 55 [2018-10-01 00:26:58,319 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:26:58,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-01 00:26:58,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-01 00:26:58,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-01 00:26:58,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-01 00:26:58,322 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-10-01 00:26:58,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:58,322 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-01 00:26:58,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-01 00:26:58,322 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-01 00:26:58,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-01 00:26:58,323 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:58,323 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-10-01 00:26:58,323 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:58,324 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:58,324 INFO L82 PathProgramCache]: Analyzing trace with hash -2096917176, now seen corresponding path program 51 times [2018-10-01 00:26:58,324 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:58,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:58,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:58,325 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:58,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:59,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:59,023 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:59,023 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 [2018-10-01 00:26:59,031 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:26:59,124 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-01 00:26:59,124 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:59,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:59,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:59,521 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:59,522 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-01 00:26:59,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-01 00:26:59,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-01 00:26:59,522 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:59,523 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-10-01 00:26:59,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:59,846 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-01 00:26:59,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-01 00:26:59,846 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-10-01 00:26:59,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:59,847 INFO L225 Difference]: With dead ends: 58 [2018-10-01 00:26:59,847 INFO L226 Difference]: Without dead ends: 56 [2018-10-01 00:26:59,847 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:26:59,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-01 00:26:59,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-01 00:26:59,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-01 00:26:59,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-01 00:26:59,850 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-10-01 00:26:59,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:59,850 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-01 00:26:59,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-01 00:26:59,851 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-01 00:26:59,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-01 00:26:59,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:59,852 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-10-01 00:26:59,852 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:59,852 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:59,852 INFO L82 PathProgramCache]: Analyzing trace with hash -579924991, now seen corresponding path program 52 times [2018-10-01 00:26:59,852 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:59,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:59,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:59,853 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:59,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:01,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:01,077 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:01,077 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:01,085 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:27:01,162 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:27:01,162 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:01,165 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:01,281 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:01,281 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-01 00:27:01,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-01 00:27:01,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-01 00:27:01,282 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:01,282 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-10-01 00:27:01,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:01,611 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-01 00:27:01,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-01 00:27:01,611 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-10-01 00:27:01,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:01,612 INFO L225 Difference]: With dead ends: 59 [2018-10-01 00:27:01,613 INFO L226 Difference]: Without dead ends: 57 [2018-10-01 00:27:01,613 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:27:01,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-01 00:27:01,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-01 00:27:01,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-01 00:27:01,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-01 00:27:01,615 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-10-01 00:27:01,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:01,615 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-01 00:27:01,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-01 00:27:01,616 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-01 00:27:01,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-01 00:27:01,616 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:01,616 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-10-01 00:27:01,616 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:01,617 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:01,617 INFO L82 PathProgramCache]: Analyzing trace with hash -797807512, now seen corresponding path program 53 times [2018-10-01 00:27:01,617 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:01,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:01,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:01,618 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:01,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:01,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:01,920 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:01,920 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 [2018-10-01 00:27:01,928 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:27:02,026 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-01 00:27:02,026 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:02,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:02,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:02,277 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:02,277 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-01 00:27:02,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-01 00:27:02,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-01 00:27:02,278 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:02,278 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-10-01 00:27:02,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:02,613 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-10-01 00:27:02,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-01 00:27:02,614 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-10-01 00:27:02,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:02,615 INFO L225 Difference]: With dead ends: 60 [2018-10-01 00:27:02,615 INFO L226 Difference]: Without dead ends: 58 [2018-10-01 00:27:02,615 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:27:02,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-01 00:27:02,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-01 00:27:02,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-01 00:27:02,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-01 00:27:02,617 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-10-01 00:27:02,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:02,617 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-01 00:27:02,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-01 00:27:02,618 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-01 00:27:02,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-01 00:27:02,618 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:02,618 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-10-01 00:27:02,618 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:02,618 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:02,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1037768929, now seen corresponding path program 54 times [2018-10-01 00:27:02,618 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:02,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:02,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:02,619 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:02,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:02,937 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:02,937 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 [2018-10-01 00:27:02,943 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:27:03,041 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-01 00:27:03,041 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:03,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:03,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:03,220 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:03,220 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-01 00:27:03,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-01 00:27:03,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-01 00:27:03,221 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:03,221 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-10-01 00:27:03,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:03,534 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-01 00:27:03,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-01 00:27:03,534 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-10-01 00:27:03,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:03,535 INFO L225 Difference]: With dead ends: 61 [2018-10-01 00:27:03,535 INFO L226 Difference]: Without dead ends: 59 [2018-10-01 00:27:03,535 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:27:03,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-01 00:27:03,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-01 00:27:03,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-01 00:27:03,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-01 00:27:03,539 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-10-01 00:27:03,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:03,539 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-01 00:27:03,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-01 00:27:03,539 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-01 00:27:03,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-01 00:27:03,540 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:03,540 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-10-01 00:27:03,540 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:03,540 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:03,540 INFO L82 PathProgramCache]: Analyzing trace with hash 2106063752, now seen corresponding path program 55 times [2018-10-01 00:27:03,540 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:03,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:03,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:03,541 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:03,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:03,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:03,858 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:03,858 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:03,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:03,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:04,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:04,072 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:04,073 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-01 00:27:04,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-01 00:27:04,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-01 00:27:04,073 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:04,074 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-10-01 00:27:04,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:04,432 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-01 00:27:04,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-01 00:27:04,432 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-10-01 00:27:04,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:04,433 INFO L225 Difference]: With dead ends: 62 [2018-10-01 00:27:04,433 INFO L226 Difference]: Without dead ends: 60 [2018-10-01 00:27:04,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:27:04,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-01 00:27:04,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-01 00:27:04,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-01 00:27:04,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-01 00:27:04,435 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-10-01 00:27:04,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:04,435 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-01 00:27:04,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-01 00:27:04,435 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-01 00:27:04,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-01 00:27:04,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:04,436 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-10-01 00:27:04,436 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:04,437 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:04,437 INFO L82 PathProgramCache]: Analyzing trace with hash 863464897, now seen corresponding path program 56 times [2018-10-01 00:27:04,437 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:04,437 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:04,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:04,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:04,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:04,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:04,787 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:04,787 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 [2018-10-01 00:27:04,796 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:27:04,899 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:27:04,899 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:04,902 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:05,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:05,023 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:05,023 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-01 00:27:05,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-01 00:27:05,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-01 00:27:05,024 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:05,024 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-10-01 00:27:05,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:05,357 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-01 00:27:05,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-01 00:27:05,357 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-10-01 00:27:05,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:05,358 INFO L225 Difference]: With dead ends: 63 [2018-10-01 00:27:05,358 INFO L226 Difference]: Without dead ends: 61 [2018-10-01 00:27:05,359 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:27:05,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-01 00:27:05,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-01 00:27:05,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-01 00:27:05,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-01 00:27:05,361 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-10-01 00:27:05,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:05,362 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-01 00:27:05,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-01 00:27:05,362 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-01 00:27:05,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-01 00:27:05,362 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:05,362 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-10-01 00:27:05,363 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:05,363 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:05,363 INFO L82 PathProgramCache]: Analyzing trace with hash 997606056, now seen corresponding path program 57 times [2018-10-01 00:27:05,363 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:05,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:05,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:05,364 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:05,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:06,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:06,349 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:06,349 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 [2018-10-01 00:27:06,356 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:27:06,463 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-01 00:27:06,464 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:06,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:08,120 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:08,120 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-01 00:27:08,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-01 00:27:08,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-01 00:27:08,121 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:08,121 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-10-01 00:27:08,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:08,483 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-10-01 00:27:08,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-01 00:27:08,484 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-10-01 00:27:08,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:08,485 INFO L225 Difference]: With dead ends: 64 [2018-10-01 00:27:08,485 INFO L226 Difference]: Without dead ends: 62 [2018-10-01 00:27:08,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:27:08,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-01 00:27:08,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-01 00:27:08,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-01 00:27:08,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-01 00:27:08,488 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-10-01 00:27:08,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:08,488 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-01 00:27:08,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-01 00:27:08,488 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-01 00:27:08,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-01 00:27:08,488 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:08,488 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-10-01 00:27:08,489 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:08,489 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:08,489 INFO L82 PathProgramCache]: Analyzing trace with hash 861014689, now seen corresponding path program 58 times [2018-10-01 00:27:08,489 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:08,489 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:08,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:08,489 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:08,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:08,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:08,989 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:08,989 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 [2018-10-01 00:27:08,999 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:27:09,090 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:27:09,091 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:09,095 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:09,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:09,224 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:09,225 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-01 00:27:09,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-01 00:27:09,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-01 00:27:09,226 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:09,226 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-10-01 00:27:09,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:09,623 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-01 00:27:09,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-01 00:27:09,624 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-10-01 00:27:09,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:09,625 INFO L225 Difference]: With dead ends: 65 [2018-10-01 00:27:09,625 INFO L226 Difference]: Without dead ends: 63 [2018-10-01 00:27:09,625 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:27:09,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-01 00:27:09,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-01 00:27:09,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-01 00:27:09,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-01 00:27:09,627 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-10-01 00:27:09,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:09,628 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-01 00:27:09,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-01 00:27:09,628 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-01 00:27:09,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-01 00:27:09,628 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:09,628 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-10-01 00:27:09,629 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:09,629 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:09,629 INFO L82 PathProgramCache]: Analyzing trace with hash 921649608, now seen corresponding path program 59 times [2018-10-01 00:27:09,629 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:09,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:09,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:09,630 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:09,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:10,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:10,081 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:10,081 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:10,089 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:27:10,203 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-01 00:27:10,204 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:10,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:10,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:10,407 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:10,407 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-01 00:27:10,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-01 00:27:10,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-01 00:27:10,408 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:10,408 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-10-01 00:27:10,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:10,804 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-10-01 00:27:10,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-01 00:27:10,805 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-10-01 00:27:10,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:10,805 INFO L225 Difference]: With dead ends: 66 [2018-10-01 00:27:10,805 INFO L226 Difference]: Without dead ends: 64 [2018-10-01 00:27:10,806 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:27:10,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-01 00:27:10,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-01 00:27:10,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-01 00:27:10,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-01 00:27:10,808 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-10-01 00:27:10,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:10,809 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-01 00:27:10,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-01 00:27:10,809 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-01 00:27:10,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-01 00:27:10,809 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:10,809 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-10-01 00:27:10,809 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:10,809 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:10,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1493635199, now seen corresponding path program 60 times [2018-10-01 00:27:10,810 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:10,810 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:10,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:10,810 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:10,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:11,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:11,411 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:11,412 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:11,419 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:27:11,529 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-01 00:27:11,529 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:11,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:11,684 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:11,684 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-01 00:27:11,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-01 00:27:11,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-01 00:27:11,685 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:11,685 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-10-01 00:27:12,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:12,019 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-01 00:27:12,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-01 00:27:12,020 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-10-01 00:27:12,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:12,021 INFO L225 Difference]: With dead ends: 67 [2018-10-01 00:27:12,021 INFO L226 Difference]: Without dead ends: 65 [2018-10-01 00:27:12,021 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:27:12,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-01 00:27:12,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-01 00:27:12,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-01 00:27:12,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-01 00:27:12,024 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-10-01 00:27:12,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:12,024 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-01 00:27:12,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-01 00:27:12,024 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-01 00:27:12,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-01 00:27:12,025 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:12,025 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-10-01 00:27:12,025 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:12,025 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:12,025 INFO L82 PathProgramCache]: Analyzing trace with hash 941947112, now seen corresponding path program 61 times [2018-10-01 00:27:12,025 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:12,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:12,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:12,026 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:12,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:12,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:12,447 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:12,447 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:12,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:12,566 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:12,695 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:12,695 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-01 00:27:12,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-01 00:27:12,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-01 00:27:12,696 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:12,696 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-10-01 00:27:13,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:13,006 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-01 00:27:13,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-01 00:27:13,007 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-10-01 00:27:13,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:13,008 INFO L225 Difference]: With dead ends: 68 [2018-10-01 00:27:13,008 INFO L226 Difference]: Without dead ends: 66 [2018-10-01 00:27:13,008 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:27:13,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-01 00:27:13,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-01 00:27:13,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-01 00:27:13,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-01 00:27:13,010 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-10-01 00:27:13,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:13,011 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-01 00:27:13,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-01 00:27:13,011 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-01 00:27:13,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-01 00:27:13,011 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:13,011 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-10-01 00:27:13,011 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:13,011 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:13,011 INFO L82 PathProgramCache]: Analyzing trace with hash -864412575, now seen corresponding path program 62 times [2018-10-01 00:27:13,012 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:13,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:13,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:13,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:13,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:13,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:13,342 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:13,342 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 [2018-10-01 00:27:13,351 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:27:13,445 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:27:13,446 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:13,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:13,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:13,827 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:13,827 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-01 00:27:13,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-01 00:27:13,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-01 00:27:13,828 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:13,829 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-10-01 00:27:14,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:14,243 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-01 00:27:14,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-01 00:27:14,243 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-10-01 00:27:14,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:14,244 INFO L225 Difference]: With dead ends: 69 [2018-10-01 00:27:14,244 INFO L226 Difference]: Without dead ends: 67 [2018-10-01 00:27:14,244 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:27:14,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-01 00:27:14,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-01 00:27:14,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-01 00:27:14,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-01 00:27:14,247 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-10-01 00:27:14,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:14,247 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-01 00:27:14,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-01 00:27:14,247 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-01 00:27:14,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-01 00:27:14,247 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:14,247 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-10-01 00:27:14,248 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:14,248 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:14,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1026988024, now seen corresponding path program 63 times [2018-10-01 00:27:14,248 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:14,248 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:14,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:14,249 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:14,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:14,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:14,569 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:14,569 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:14,579 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:27:14,744 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-01 00:27:14,745 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:14,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:14,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:14,914 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:14,914 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-01 00:27:14,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-01 00:27:14,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-01 00:27:14,915 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:14,915 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-10-01 00:27:15,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:15,372 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-01 00:27:15,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-01 00:27:15,373 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-10-01 00:27:15,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:15,374 INFO L225 Difference]: With dead ends: 70 [2018-10-01 00:27:15,374 INFO L226 Difference]: Without dead ends: 68 [2018-10-01 00:27:15,374 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:27:15,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-01 00:27:15,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-01 00:27:15,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-01 00:27:15,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-01 00:27:15,376 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-10-01 00:27:15,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:15,377 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-01 00:27:15,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-01 00:27:15,377 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-01 00:27:15,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-01 00:27:15,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:15,377 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-10-01 00:27:15,378 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:15,378 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:15,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1771859647, now seen corresponding path program 64 times [2018-10-01 00:27:15,378 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:15,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:15,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:15,379 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:15,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:15,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:15,716 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:15,716 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-01 00:27:15,733 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:15,830 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:27:15,831 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:15,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:16,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:16,083 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:16,083 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-01 00:27:16,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-01 00:27:16,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-01 00:27:16,084 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:16,084 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-10-01 00:27:16,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:16,656 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-01 00:27:16,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-01 00:27:16,657 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-10-01 00:27:16,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:16,658 INFO L225 Difference]: With dead ends: 71 [2018-10-01 00:27:16,658 INFO L226 Difference]: Without dead ends: 69 [2018-10-01 00:27:16,658 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:27:16,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-01 00:27:16,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-01 00:27:16,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-01 00:27:16,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-01 00:27:16,661 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-10-01 00:27:16,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:16,661 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-01 00:27:16,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-01 00:27:16,661 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-01 00:27:16,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-01 00:27:16,662 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:16,662 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-10-01 00:27:16,662 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:16,662 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:16,662 INFO L82 PathProgramCache]: Analyzing trace with hash 906923816, now seen corresponding path program 65 times [2018-10-01 00:27:16,662 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:16,662 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:16,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:16,663 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:16,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:17,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:17,458 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:17,458 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 [2018-10-01 00:27:17,465 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:27:17,586 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-01 00:27:17,586 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:17,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:17,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:17,753 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:17,753 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-01 00:27:17,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-01 00:27:17,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-01 00:27:17,755 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:17,755 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-10-01 00:27:18,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:18,190 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-10-01 00:27:18,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-01 00:27:18,190 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-10-01 00:27:18,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:18,191 INFO L225 Difference]: With dead ends: 72 [2018-10-01 00:27:18,191 INFO L226 Difference]: Without dead ends: 70 [2018-10-01 00:27:18,191 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:27:18,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-01 00:27:18,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-01 00:27:18,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-01 00:27:18,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-01 00:27:18,193 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-10-01 00:27:18,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:18,193 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-01 00:27:18,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-01 00:27:18,194 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-01 00:27:18,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-01 00:27:18,194 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:18,194 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-10-01 00:27:18,194 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:18,195 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:18,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1950134751, now seen corresponding path program 66 times [2018-10-01 00:27:18,195 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:18,195 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:18,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:18,195 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:18,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:18,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:18,571 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:18,571 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:18,578 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:27:18,695 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-01 00:27:18,696 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:18,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:19,975 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:19,975 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-01 00:27:19,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-01 00:27:19,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-01 00:27:19,976 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:19,976 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-10-01 00:27:20,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:20,265 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-01 00:27:20,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-01 00:27:20,265 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-10-01 00:27:20,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:20,266 INFO L225 Difference]: With dead ends: 73 [2018-10-01 00:27:20,266 INFO L226 Difference]: Without dead ends: 71 [2018-10-01 00:27:20,267 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:27:20,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-01 00:27:20,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-01 00:27:20,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-01 00:27:20,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-01 00:27:20,269 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-10-01 00:27:20,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:20,270 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-01 00:27:20,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-01 00:27:20,270 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-01 00:27:20,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-01 00:27:20,270 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:20,271 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-10-01 00:27:20,271 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:20,271 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:20,271 INFO L82 PathProgramCache]: Analyzing trace with hash -324637112, now seen corresponding path program 67 times [2018-10-01 00:27:20,271 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:20,271 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:20,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:20,272 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:20,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:20,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:20,630 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:20,630 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:20,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:20,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:21,087 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:21,087 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-01 00:27:21,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-01 00:27:21,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-01 00:27:21,088 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:21,088 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-10-01 00:27:21,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:21,730 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-01 00:27:21,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-01 00:27:21,730 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-10-01 00:27:21,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:21,731 INFO L225 Difference]: With dead ends: 74 [2018-10-01 00:27:21,731 INFO L226 Difference]: Without dead ends: 72 [2018-10-01 00:27:21,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:27:21,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-01 00:27:21,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-01 00:27:21,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-01 00:27:21,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-01 00:27:21,734 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-10-01 00:27:21,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:21,734 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-01 00:27:21,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-01 00:27:21,734 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-01 00:27:21,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-01 00:27:21,735 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:21,735 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-10-01 00:27:21,735 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:21,735 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:21,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1473817855, now seen corresponding path program 68 times [2018-10-01 00:27:21,735 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:21,735 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:21,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:21,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:21,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:22,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:22,089 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:22,089 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:22,095 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:27:22,195 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:27:22,195 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:22,198 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:22,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:22,348 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:22,349 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-01 00:27:22,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-01 00:27:22,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-01 00:27:22,350 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:22,350 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-10-01 00:27:22,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:22,691 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-01 00:27:22,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-01 00:27:22,691 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-10-01 00:27:22,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:22,692 INFO L225 Difference]: With dead ends: 75 [2018-10-01 00:27:22,692 INFO L226 Difference]: Without dead ends: 73 [2018-10-01 00:27:22,692 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:27:22,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-01 00:27:22,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-01 00:27:22,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-01 00:27:22,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-01 00:27:22,694 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-10-01 00:27:22,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:22,695 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-01 00:27:22,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-01 00:27:22,695 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-01 00:27:22,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-01 00:27:22,695 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:22,695 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-10-01 00:27:22,696 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:22,696 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:22,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1556284776, now seen corresponding path program 69 times [2018-10-01 00:27:22,696 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:22,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:22,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:22,697 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:22,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:23,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:23,056 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:23,056 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 [2018-10-01 00:27:23,064 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:27:23,229 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-01 00:27:23,229 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:23,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:23,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:23,657 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:23,657 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-01 00:27:23,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-01 00:27:23,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-01 00:27:23,658 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:23,658 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-10-01 00:27:24,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:24,124 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-01 00:27:24,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-01 00:27:24,125 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-10-01 00:27:24,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:24,126 INFO L225 Difference]: With dead ends: 76 [2018-10-01 00:27:24,126 INFO L226 Difference]: Without dead ends: 74 [2018-10-01 00:27:24,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:27:24,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-01 00:27:24,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-01 00:27:24,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-01 00:27:24,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-01 00:27:24,130 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-10-01 00:27:24,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:24,130 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-01 00:27:24,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-01 00:27:24,130 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-01 00:27:24,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-01 00:27:24,131 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:24,131 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-10-01 00:27:24,131 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:24,131 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:24,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1000185825, now seen corresponding path program 70 times [2018-10-01 00:27:24,131 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:24,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:24,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:24,132 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:24,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:24,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:24,497 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:24,497 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 [2018-10-01 00:27:24,504 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:27:24,617 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:27:24,617 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:24,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:24,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:24,839 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:24,840 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-01 00:27:24,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-01 00:27:24,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-01 00:27:24,841 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:24,841 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-10-01 00:27:25,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:25,292 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-01 00:27:25,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-01 00:27:25,292 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-10-01 00:27:25,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:25,293 INFO L225 Difference]: With dead ends: 77 [2018-10-01 00:27:25,293 INFO L226 Difference]: Without dead ends: 75 [2018-10-01 00:27:25,293 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:27:25,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-01 00:27:25,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-01 00:27:25,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-01 00:27:25,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-01 00:27:25,296 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-10-01 00:27:25,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:25,296 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-01 00:27:25,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-01 00:27:25,296 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-01 00:27:25,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-01 00:27:25,297 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:25,297 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-10-01 00:27:25,297 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:25,297 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:25,298 INFO L82 PathProgramCache]: Analyzing trace with hash 940987528, now seen corresponding path program 71 times [2018-10-01 00:27:25,298 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:25,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:25,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:25,298 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:25,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:25,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:25,688 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:25,688 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 [2018-10-01 00:27:25,695 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:27:25,834 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-01 00:27:25,834 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:25,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:26,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:26,202 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:26,202 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-01 00:27:26,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-01 00:27:26,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-01 00:27:26,203 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:26,203 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-10-01 00:27:26,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:26,878 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-10-01 00:27:26,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-01 00:27:26,879 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-10-01 00:27:26,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:26,880 INFO L225 Difference]: With dead ends: 78 [2018-10-01 00:27:26,880 INFO L226 Difference]: Without dead ends: 76 [2018-10-01 00:27:26,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:27:26,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-01 00:27:26,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-01 00:27:26,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-01 00:27:26,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-01 00:27:26,883 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-10-01 00:27:26,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:26,884 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-01 00:27:26,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-01 00:27:26,884 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-01 00:27:26,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-01 00:27:26,884 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:26,884 INFO L375 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-10-01 00:27:26,885 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:26,885 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:26,885 INFO L82 PathProgramCache]: Analyzing trace with hash -894159679, now seen corresponding path program 72 times [2018-10-01 00:27:26,885 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:26,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:26,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:26,886 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:26,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:27,358 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:27,358 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 [2018-10-01 00:27:27,365 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:27:27,495 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-01 00:27:27,495 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:27,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:27,680 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:27,680 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-01 00:27:27,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-01 00:27:27,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-01 00:27:27,681 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:27,681 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-10-01 00:27:28,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:28,179 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-01 00:27:28,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-01 00:27:28,180 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-10-01 00:27:28,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:28,181 INFO L225 Difference]: With dead ends: 79 [2018-10-01 00:27:28,181 INFO L226 Difference]: Without dead ends: 77 [2018-10-01 00:27:28,181 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:27:28,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-01 00:27:28,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-01 00:27:28,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-01 00:27:28,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-01 00:27:28,184 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-10-01 00:27:28,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:28,185 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-01 00:27:28,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-01 00:27:28,185 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-01 00:27:28,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-01 00:27:28,185 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:28,186 INFO L375 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-10-01 00:27:28,186 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:28,186 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:28,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1949148248, now seen corresponding path program 73 times [2018-10-01 00:27:28,186 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:28,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:28,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:28,187 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:28,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:28,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:28,909 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:28,909 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:28,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:29,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:29,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:29,196 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:29,196 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-01 00:27:29,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-01 00:27:29,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-01 00:27:29,197 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:29,197 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-10-01 00:27:29,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:29,688 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-10-01 00:27:29,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-01 00:27:29,689 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-10-01 00:27:29,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:29,690 INFO L225 Difference]: With dead ends: 80 [2018-10-01 00:27:29,690 INFO L226 Difference]: Without dead ends: 78 [2018-10-01 00:27:29,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:27:29,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-01 00:27:29,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-01 00:27:29,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-01 00:27:29,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-01 00:27:29,693 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-10-01 00:27:29,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:29,694 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-01 00:27:29,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-01 00:27:29,694 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-01 00:27:29,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-01 00:27:29,694 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:29,694 INFO L375 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-10-01 00:27:29,695 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:29,695 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:29,695 INFO L82 PathProgramCache]: Analyzing trace with hash -294055519, now seen corresponding path program 74 times [2018-10-01 00:27:29,695 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:29,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:29,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:29,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:29,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:30,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:30,218 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:30,218 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 [2018-10-01 00:27:30,224 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:27:30,332 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:27:30,333 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:30,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:30,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:30,495 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:30,495 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-01 00:27:30,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-01 00:27:30,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-01 00:27:30,496 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:30,496 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. [2018-10-01 00:27:31,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:31,004 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-01 00:27:31,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-01 00:27:31,004 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 77 [2018-10-01 00:27:31,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:31,005 INFO L225 Difference]: With dead ends: 81 [2018-10-01 00:27:31,005 INFO L226 Difference]: Without dead ends: 79 [2018-10-01 00:27:31,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:27:31,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-01 00:27:31,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-01 00:27:31,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-01 00:27:31,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-01 00:27:31,009 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-10-01 00:27:31,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:31,009 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-01 00:27:31,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-01 00:27:31,009 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-01 00:27:31,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-01 00:27:31,010 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:31,010 INFO L375 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-10-01 00:27:31,010 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:31,010 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:31,010 INFO L82 PathProgramCache]: Analyzing trace with hash -525788472, now seen corresponding path program 75 times [2018-10-01 00:27:31,010 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:31,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:31,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:31,011 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:31,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:31,406 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:31,406 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 [2018-10-01 00:27:31,413 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:27:31,568 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-10-01 00:27:31,568 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:31,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:31,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:31,897 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:31,898 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-01 00:27:31,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-01 00:27:31,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-01 00:27:31,899 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:31,899 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 78 states. [2018-10-01 00:27:32,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:32,930 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-10-01 00:27:32,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-01 00:27:32,931 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2018-10-01 00:27:32,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:32,932 INFO L225 Difference]: With dead ends: 82 [2018-10-01 00:27:32,932 INFO L226 Difference]: Without dead ends: 80 [2018-10-01 00:27:32,932 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:27:32,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-01 00:27:32,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-10-01 00:27:32,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-01 00:27:32,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-01 00:27:32,934 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-10-01 00:27:32,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:32,934 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-01 00:27:32,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-01 00:27:32,935 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-01 00:27:32,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-01 00:27:32,935 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:32,935 INFO L375 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-10-01 00:27:32,935 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:32,936 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:32,936 INFO L82 PathProgramCache]: Analyzing trace with hash 880424577, now seen corresponding path program 76 times [2018-10-01 00:27:32,936 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:32,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:32,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:32,937 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:32,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:33,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:33,332 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:33,332 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 [2018-10-01 00:27:33,340 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:27:33,450 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:27:33,450 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:33,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:33,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:33,618 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:33,618 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-01 00:27:33,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-01 00:27:33,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-01 00:27:33,619 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:33,619 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 79 states. [2018-10-01 00:27:34,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:34,890 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-01 00:27:34,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-01 00:27:34,890 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 79 [2018-10-01 00:27:34,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:34,891 INFO L225 Difference]: With dead ends: 83 [2018-10-01 00:27:34,891 INFO L226 Difference]: Without dead ends: 81 [2018-10-01 00:27:34,891 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:27:34,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-01 00:27:34,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-01 00:27:34,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-01 00:27:34,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-01 00:27:34,894 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-10-01 00:27:34,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:34,895 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-01 00:27:34,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-01 00:27:34,895 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-01 00:27:34,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-01 00:27:34,895 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:34,895 INFO L375 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-10-01 00:27:34,896 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:34,896 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:34,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1523356136, now seen corresponding path program 77 times [2018-10-01 00:27:34,896 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:34,896 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:34,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:34,897 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:34,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:35,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:35,324 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:35,324 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:35,331 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:27:35,477 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-10-01 00:27:35,478 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:35,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:35,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:35,643 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:35,644 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-01 00:27:35,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-01 00:27:35,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-01 00:27:35,645 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:35,645 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 80 states. [2018-10-01 00:27:36,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:36,166 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-10-01 00:27:36,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-01 00:27:36,166 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 80 [2018-10-01 00:27:36,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:36,167 INFO L225 Difference]: With dead ends: 84 [2018-10-01 00:27:36,167 INFO L226 Difference]: Without dead ends: 82 [2018-10-01 00:27:36,167 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:27:36,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-01 00:27:36,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-10-01 00:27:36,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-01 00:27:36,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-10-01 00:27:36,170 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-10-01 00:27:36,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:36,171 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-10-01 00:27:36,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-01 00:27:36,171 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-10-01 00:27:36,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-01 00:27:36,171 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:36,172 INFO L375 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-10-01 00:27:36,172 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:36,172 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:36,172 INFO L82 PathProgramCache]: Analyzing trace with hash -20602015, now seen corresponding path program 78 times [2018-10-01 00:27:36,172 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:36,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:36,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:36,173 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:36,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:36,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:36,646 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:36,646 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 [2018-10-01 00:27:36,652 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:27:36,818 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2018-10-01 00:27:36,818 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:36,822 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:37,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:37,112 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:37,112 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-01 00:27:37,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-01 00:27:37,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-01 00:27:37,113 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:37,114 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 81 states. [2018-10-01 00:27:37,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:37,457 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-01 00:27:37,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-01 00:27:37,457 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 81 [2018-10-01 00:27:37,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:37,458 INFO L225 Difference]: With dead ends: 85 [2018-10-01 00:27:37,458 INFO L226 Difference]: Without dead ends: 83 [2018-10-01 00:27:37,458 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:27:37,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-01 00:27:37,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-01 00:27:37,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-01 00:27:37,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-01 00:27:37,461 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-10-01 00:27:37,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:37,461 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-01 00:27:37,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-01 00:27:37,461 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-01 00:27:37,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-01 00:27:37,462 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:37,462 INFO L375 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-10-01 00:27:37,462 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:37,462 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:37,462 INFO L82 PathProgramCache]: Analyzing trace with hash -638664440, now seen corresponding path program 79 times [2018-10-01 00:27:37,462 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:37,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:37,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:37,463 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:37,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:38,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:38,051 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:38,051 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 [2018-10-01 00:27:38,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:38,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:38,341 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:38,341 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-01 00:27:38,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-01 00:27:38,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-01 00:27:38,342 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:38,342 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 82 states. [2018-10-01 00:27:38,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:38,836 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-10-01 00:27:38,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-01 00:27:38,836 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82 [2018-10-01 00:27:38,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:38,837 INFO L225 Difference]: With dead ends: 86 [2018-10-01 00:27:38,837 INFO L226 Difference]: Without dead ends: 84 [2018-10-01 00:27:38,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:27:38,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-01 00:27:38,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-10-01 00:27:38,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-01 00:27:38,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-10-01 00:27:38,840 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-10-01 00:27:38,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:38,840 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-10-01 00:27:38,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-01 00:27:38,840 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-10-01 00:27:38,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-01 00:27:38,840 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:38,840 INFO L375 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-10-01 00:27:38,841 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:38,841 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:38,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1676236865, now seen corresponding path program 80 times [2018-10-01 00:27:38,841 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:38,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:38,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:38,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:38,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:39,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:39,278 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:39,278 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:39,286 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:27:39,404 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:27:39,405 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:39,409 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:39,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:39,582 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:39,583 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-01 00:27:39,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-01 00:27:39,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-01 00:27:39,584 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:39,584 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 83 states. [2018-10-01 00:27:40,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:40,170 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-01 00:27:40,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-01 00:27:40,171 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 83 [2018-10-01 00:27:40,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:40,171 INFO L225 Difference]: With dead ends: 87 [2018-10-01 00:27:40,171 INFO L226 Difference]: Without dead ends: 85 [2018-10-01 00:27:40,171 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:27:40,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-01 00:27:40,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-01 00:27:40,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-01 00:27:40,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-01 00:27:40,173 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-10-01 00:27:40,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:40,174 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-01 00:27:40,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-01 00:27:40,174 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-01 00:27:40,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-01 00:27:40,174 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:40,174 INFO L375 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-10-01 00:27:40,174 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:40,174 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:40,175 INFO L82 PathProgramCache]: Analyzing trace with hash 423733288, now seen corresponding path program 81 times [2018-10-01 00:27:40,175 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:40,175 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:40,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:40,175 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:40,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:40,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:40,623 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:40,623 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:40,630 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:27:40,787 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-10-01 00:27:40,787 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:40,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:40,969 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:40,969 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-01 00:27:40,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-01 00:27:40,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-01 00:27:40,970 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:40,971 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 84 states. [2018-10-01 00:27:41,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:41,452 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-10-01 00:27:41,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-01 00:27:41,452 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 84 [2018-10-01 00:27:41,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:41,453 INFO L225 Difference]: With dead ends: 88 [2018-10-01 00:27:41,453 INFO L226 Difference]: Without dead ends: 86 [2018-10-01 00:27:41,453 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:27:41,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-01 00:27:41,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-01 00:27:41,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-01 00:27:41,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-10-01 00:27:41,455 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-10-01 00:27:41,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:41,456 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-10-01 00:27:41,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-01 00:27:41,456 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-10-01 00:27:41,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-01 00:27:41,456 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:41,456 INFO L375 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-10-01 00:27:41,456 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:41,457 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:41,457 INFO L82 PathProgramCache]: Analyzing trace with hash 250828065, now seen corresponding path program 82 times [2018-10-01 00:27:41,457 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:41,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:41,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:41,458 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:41,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:42,174 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:42,174 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 [2018-10-01 00:27:42,204 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:27:42,329 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:27:42,329 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:42,333 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:42,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:42,687 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:42,687 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-01 00:27:42,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-01 00:27:42,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-01 00:27:42,688 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:42,688 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 85 states. [2018-10-01 00:27:43,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:43,298 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-01 00:27:43,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-01 00:27:43,298 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 85 [2018-10-01 00:27:43,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:43,299 INFO L225 Difference]: With dead ends: 89 [2018-10-01 00:27:43,299 INFO L226 Difference]: Without dead ends: 87 [2018-10-01 00:27:43,299 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:27:43,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-01 00:27:43,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-01 00:27:43,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-01 00:27:43,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-01 00:27:43,303 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-10-01 00:27:43,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:43,303 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-01 00:27:43,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-01 00:27:43,303 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-01 00:27:43,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-01 00:27:43,304 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:43,304 INFO L375 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-10-01 00:27:43,304 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:43,304 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:43,304 INFO L82 PathProgramCache]: Analyzing trace with hash -814266552, now seen corresponding path program 83 times [2018-10-01 00:27:43,304 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:43,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:43,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:43,305 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:43,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:43,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:43,762 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:43,762 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 [2018-10-01 00:27:43,769 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:27:43,938 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-01 00:27:43,938 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:43,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:44,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:44,114 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:44,115 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-01 00:27:44,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-01 00:27:44,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-01 00:27:44,116 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:44,116 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 86 states. [2018-10-01 00:27:44,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:44,730 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-10-01 00:27:44,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-01 00:27:44,731 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86 [2018-10-01 00:27:44,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:44,731 INFO L225 Difference]: With dead ends: 90 [2018-10-01 00:27:44,731 INFO L226 Difference]: Without dead ends: 88 [2018-10-01 00:27:44,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:27:44,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-01 00:27:44,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-10-01 00:27:44,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-01 00:27:44,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-10-01 00:27:44,734 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-10-01 00:27:44,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:44,734 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-10-01 00:27:44,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-01 00:27:44,734 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-10-01 00:27:44,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-01 00:27:44,735 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:44,735 INFO L375 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-10-01 00:27:44,735 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:44,735 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:44,736 INFO L82 PathProgramCache]: Analyzing trace with hash 527538689, now seen corresponding path program 84 times [2018-10-01 00:27:44,736 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:44,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:44,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:44,737 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:44,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:45,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:45,207 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:45,207 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 [2018-10-01 00:27:45,216 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:27:45,383 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-01 00:27:45,383 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:45,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:45,562 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:45,562 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-01 00:27:45,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-01 00:27:45,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-01 00:27:45,563 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:45,563 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 87 states. [2018-10-01 00:27:46,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:46,030 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-01 00:27:46,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-01 00:27:46,031 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 87 [2018-10-01 00:27:46,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:46,031 INFO L225 Difference]: With dead ends: 91 [2018-10-01 00:27:46,032 INFO L226 Difference]: Without dead ends: 89 [2018-10-01 00:27:46,032 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:27:46,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-01 00:27:46,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-01 00:27:46,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-01 00:27:46,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-01 00:27:46,034 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-10-01 00:27:46,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:46,035 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-01 00:27:46,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-01 00:27:46,035 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-01 00:27:46,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-01 00:27:46,035 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:46,036 INFO L375 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-10-01 00:27:46,036 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:46,036 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:46,036 INFO L82 PathProgramCache]: Analyzing trace with hash -826171800, now seen corresponding path program 85 times [2018-10-01 00:27:46,036 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:46,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:46,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:46,037 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:46,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:46,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:46,519 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:46,519 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:46,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:46,651 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:46,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:46,830 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:46,831 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-01 00:27:46,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-01 00:27:46,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-01 00:27:46,832 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:46,832 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 88 states. [2018-10-01 00:27:47,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:47,405 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-10-01 00:27:47,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-01 00:27:47,405 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 88 [2018-10-01 00:27:47,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:47,406 INFO L225 Difference]: With dead ends: 92 [2018-10-01 00:27:47,406 INFO L226 Difference]: Without dead ends: 90 [2018-10-01 00:27:47,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:27:47,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-01 00:27:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-10-01 00:27:47,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-01 00:27:47,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-10-01 00:27:47,409 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-10-01 00:27:47,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:47,409 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-10-01 00:27:47,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-01 00:27:47,409 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-10-01 00:27:47,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-01 00:27:47,410 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:47,410 INFO L375 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-10-01 00:27:47,410 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:47,410 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:47,410 INFO L82 PathProgramCache]: Analyzing trace with hash 158476001, now seen corresponding path program 86 times [2018-10-01 00:27:47,410 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:47,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:47,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:47,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:47,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:48,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:48,027 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:48,027 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 [2018-10-01 00:27:48,034 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:27:48,157 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:27:48,157 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:48,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:48,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:48,340 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:48,341 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-01 00:27:48,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-01 00:27:48,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-01 00:27:48,342 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:48,342 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 89 states. [2018-10-01 00:27:48,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:48,730 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-01 00:27:48,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-01 00:27:48,731 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 89 [2018-10-01 00:27:48,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:48,731 INFO L225 Difference]: With dead ends: 93 [2018-10-01 00:27:48,731 INFO L226 Difference]: Without dead ends: 91 [2018-10-01 00:27:48,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:27:48,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-01 00:27:48,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-01 00:27:48,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-01 00:27:48,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-01 00:27:48,733 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-10-01 00:27:48,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:48,733 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-01 00:27:48,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-01 00:27:48,734 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-01 00:27:48,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-01 00:27:48,734 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:48,734 INFO L375 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-10-01 00:27:48,734 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:48,734 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:48,734 INFO L82 PathProgramCache]: Analyzing trace with hash 617786760, now seen corresponding path program 87 times [2018-10-01 00:27:48,734 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:48,735 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:48,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:48,735 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:48,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:49,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:49,221 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:49,221 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 [2018-10-01 00:27:49,229 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:27:49,406 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2018-10-01 00:27:49,406 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:49,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:49,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:49,595 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:49,595 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-01 00:27:49,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-01 00:27:49,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-01 00:27:49,596 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:49,596 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 90 states. [2018-10-01 00:27:50,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:50,023 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-10-01 00:27:50,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-01 00:27:50,023 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90 [2018-10-01 00:27:50,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:50,023 INFO L225 Difference]: With dead ends: 94 [2018-10-01 00:27:50,024 INFO L226 Difference]: Without dead ends: 92 [2018-10-01 00:27:50,024 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:27:50,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-01 00:27:50,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-01 00:27:50,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-01 00:27:50,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-10-01 00:27:50,026 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-10-01 00:27:50,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:50,026 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-10-01 00:27:50,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-01 00:27:50,026 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-10-01 00:27:50,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-01 00:27:50,026 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:50,026 INFO L375 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-10-01 00:27:50,027 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:50,027 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:50,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1971518401, now seen corresponding path program 88 times [2018-10-01 00:27:50,027 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:50,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:50,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:50,028 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:50,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:50,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:50,539 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:50,539 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 [2018-10-01 00:27:50,546 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:27:50,676 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:27:50,676 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:50,680 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:50,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:50,875 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:50,875 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-01 00:27:50,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-01 00:27:50,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-01 00:27:50,876 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:50,876 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 91 states. [2018-10-01 00:27:51,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:51,289 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-01 00:27:51,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-01 00:27:51,290 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 91 [2018-10-01 00:27:51,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:51,291 INFO L225 Difference]: With dead ends: 95 [2018-10-01 00:27:51,291 INFO L226 Difference]: Without dead ends: 93 [2018-10-01 00:27:51,291 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:27:51,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-01 00:27:51,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-01 00:27:51,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-01 00:27:51,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-01 00:27:51,293 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-10-01 00:27:51,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:51,293 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-01 00:27:51,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-01 00:27:51,293 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-01 00:27:51,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-01 00:27:51,293 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:51,294 INFO L375 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-10-01 00:27:51,294 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:51,294 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:51,294 INFO L82 PathProgramCache]: Analyzing trace with hash 987526312, now seen corresponding path program 89 times [2018-10-01 00:27:51,294 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:51,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:51,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:51,295 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:51,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:51,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:51,805 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:51,805 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 [2018-10-01 00:27:51,815 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:27:51,997 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-10-01 00:27:51,997 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:52,001 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:52,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:52,329 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:52,329 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-01 00:27:52,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-01 00:27:52,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-01 00:27:52,331 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:52,331 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 92 states. [2018-10-01 00:27:52,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:52,817 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-10-01 00:27:52,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-01 00:27:52,818 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 92 [2018-10-01 00:27:52,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:52,818 INFO L225 Difference]: With dead ends: 96 [2018-10-01 00:27:52,818 INFO L226 Difference]: Without dead ends: 94 [2018-10-01 00:27:52,818 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:27:52,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-01 00:27:52,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-10-01 00:27:52,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-01 00:27:52,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-01 00:27:52,821 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-10-01 00:27:52,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:52,821 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-01 00:27:52,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-01 00:27:52,822 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-01 00:27:52,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-01 00:27:52,822 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:52,822 INFO L375 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-10-01 00:27:52,822 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:52,823 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:52,823 INFO L82 PathProgramCache]: Analyzing trace with hash 548542625, now seen corresponding path program 90 times [2018-10-01 00:27:52,823 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:52,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:52,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:52,824 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:52,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:53,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:53,355 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:53,355 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 [2018-10-01 00:27:53,365 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:27:53,554 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2018-10-01 00:27:53,554 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:53,559 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:53,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:53,746 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:53,746 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-01 00:27:53,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-01 00:27:53,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-01 00:27:53,748 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:53,748 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 93 states. [2018-10-01 00:27:54,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:54,277 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-01 00:27:54,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-01 00:27:54,278 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 93 [2018-10-01 00:27:54,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:54,279 INFO L225 Difference]: With dead ends: 97 [2018-10-01 00:27:54,279 INFO L226 Difference]: Without dead ends: 95 [2018-10-01 00:27:54,279 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:27:54,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-01 00:27:54,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-01 00:27:54,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-01 00:27:54,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-01 00:27:54,282 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-10-01 00:27:54,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:54,282 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-01 00:27:54,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-01 00:27:54,282 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-01 00:27:54,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-01 00:27:54,283 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:54,283 INFO L375 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-10-01 00:27:54,283 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:54,283 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:54,283 INFO L82 PathProgramCache]: Analyzing trace with hash -175049784, now seen corresponding path program 91 times [2018-10-01 00:27:54,284 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:54,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:54,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:54,284 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:54,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:54,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:54,793 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:54,793 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 [2018-10-01 00:27:54,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:54,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:55,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:55,125 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:55,125 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-01 00:27:55,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-01 00:27:55,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-01 00:27:55,127 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:55,127 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2018-10-01 00:27:55,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:55,794 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-10-01 00:27:55,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-01 00:27:55,794 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94 [2018-10-01 00:27:55,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:55,795 INFO L225 Difference]: With dead ends: 98 [2018-10-01 00:27:55,795 INFO L226 Difference]: Without dead ends: 96 [2018-10-01 00:27:55,795 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:27:55,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-01 00:27:55,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-01 00:27:55,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-01 00:27:55,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-01 00:27:55,797 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-10-01 00:27:55,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:55,797 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-01 00:27:55,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-01 00:27:55,797 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-01 00:27:55,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-01 00:27:55,798 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:55,798 INFO L375 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-10-01 00:27:55,798 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:55,798 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:55,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1131577983, now seen corresponding path program 92 times [2018-10-01 00:27:55,798 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:55,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:55,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:55,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:55,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:56,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:56,304 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:56,304 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:56,311 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:27:56,444 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:27:56,445 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:56,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:56,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:56,639 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:56,639 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-01 00:27:56,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-01 00:27:56,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-01 00:27:56,640 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:56,641 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 95 states. [2018-10-01 00:27:57,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:57,113 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-01 00:27:57,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-01 00:27:57,113 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 95 [2018-10-01 00:27:57,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:57,114 INFO L225 Difference]: With dead ends: 99 [2018-10-01 00:27:57,114 INFO L226 Difference]: Without dead ends: 97 [2018-10-01 00:27:57,114 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:27:57,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-01 00:27:57,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-01 00:27:57,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-01 00:27:57,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-01 00:27:57,116 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-10-01 00:27:57,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:57,116 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-01 00:27:57,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-01 00:27:57,116 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-01 00:27:57,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-01 00:27:57,117 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:57,117 INFO L375 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-10-01 00:27:57,117 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:57,117 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:57,117 INFO L82 PathProgramCache]: Analyzing trace with hash -719181080, now seen corresponding path program 93 times [2018-10-01 00:27:57,117 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:57,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:57,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:57,118 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:57,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:57,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:57,826 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:57,826 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 [2018-10-01 00:27:57,834 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:27:58,028 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2018-10-01 00:27:58,028 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:58,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:58,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:58,220 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:58,220 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-01 00:27:58,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-01 00:27:58,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-01 00:27:58,222 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:58,222 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 96 states. [2018-10-01 00:27:58,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:58,774 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-10-01 00:27:58,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-01 00:27:58,775 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 96 [2018-10-01 00:27:58,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:58,776 INFO L225 Difference]: With dead ends: 100 [2018-10-01 00:27:58,776 INFO L226 Difference]: Without dead ends: 98 [2018-10-01 00:27:58,776 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:27:58,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-01 00:27:58,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-10-01 00:27:58,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-10-01 00:27:58,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-10-01 00:27:58,778 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-10-01 00:27:58,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:58,778 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-10-01 00:27:58,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-01 00:27:58,778 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-10-01 00:27:58,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-01 00:27:58,778 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:58,779 INFO L375 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-10-01 00:27:58,779 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:58,779 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:58,779 INFO L82 PathProgramCache]: Analyzing trace with hash -819778975, now seen corresponding path program 94 times [2018-10-01 00:27:58,779 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:58,779 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:58,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:58,780 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:58,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:59,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:59,306 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:59,306 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:59,313 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:27:59,447 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:27:59,447 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:59,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:59,692 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:59,692 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-01 00:27:59,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-01 00:27:59,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-01 00:27:59,694 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:59,694 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 97 states. [2018-10-01 00:28:00,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:00,150 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-01 00:28:00,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-01 00:28:00,150 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 97 [2018-10-01 00:28:00,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:00,150 INFO L225 Difference]: With dead ends: 101 [2018-10-01 00:28:00,151 INFO L226 Difference]: Without dead ends: 99 [2018-10-01 00:28:00,151 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:28:00,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-01 00:28:00,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-01 00:28:00,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-01 00:28:00,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-01 00:28:00,156 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-10-01 00:28:00,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:00,156 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-01 00:28:00,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-01 00:28:00,156 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-01 00:28:00,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-01 00:28:00,157 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:00,157 INFO L375 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-10-01 00:28:00,157 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:00,157 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:00,157 INFO L82 PathProgramCache]: Analyzing trace with hash 356653576, now seen corresponding path program 95 times [2018-10-01 00:28:00,158 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:00,158 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:00,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:00,158 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:00,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:00,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:00,921 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:00,921 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 [2018-10-01 00:28:00,930 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:28:01,128 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-01 00:28:01,128 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:01,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:01,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:01,330 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:01,330 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-01 00:28:01,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-01 00:28:01,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-01 00:28:01,331 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:01,331 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 98 states. [2018-10-01 00:28:01,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:01,976 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-10-01 00:28:01,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-01 00:28:01,977 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98 [2018-10-01 00:28:01,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:01,977 INFO L225 Difference]: With dead ends: 102 [2018-10-01 00:28:01,978 INFO L226 Difference]: Without dead ends: 100 [2018-10-01 00:28:01,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:28:01,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-01 00:28:01,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-01 00:28:01,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-01 00:28:01,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-10-01 00:28:01,981 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-10-01 00:28:01,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:01,981 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-10-01 00:28:01,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-01 00:28:01,981 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-10-01 00:28:01,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-01 00:28:01,982 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:01,982 INFO L375 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-10-01 00:28:01,982 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:01,982 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:01,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1828643007, now seen corresponding path program 96 times [2018-10-01 00:28:01,982 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:01,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:01,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:01,983 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:01,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:02,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:02,812 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:02,812 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:28:02,819 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:28:03,010 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-01 00:28:03,010 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:03,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:03,208 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:03,209 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-01 00:28:03,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-01 00:28:03,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-01 00:28:03,210 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:03,210 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 99 states. [2018-10-01 00:28:03,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:03,681 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-01 00:28:03,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-01 00:28:03,682 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 99 [2018-10-01 00:28:03,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:03,683 INFO L225 Difference]: With dead ends: 103 [2018-10-01 00:28:03,683 INFO L226 Difference]: Without dead ends: 101 [2018-10-01 00:28:03,683 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:28:03,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-01 00:28:03,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-01 00:28:03,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-01 00:28:03,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-01 00:28:03,686 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-10-01 00:28:03,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:03,687 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-01 00:28:03,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-01 00:28:03,687 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-01 00:28:03,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-01 00:28:03,687 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:03,687 INFO L375 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-10-01 00:28:03,687 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:03,688 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:03,688 INFO L82 PathProgramCache]: Analyzing trace with hash -853360344, now seen corresponding path program 97 times [2018-10-01 00:28:03,688 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:03,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:03,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:03,688 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:03,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:04,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:04,281 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:04,281 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:28:04,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:04,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:04,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:04,629 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:04,629 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-01 00:28:04,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-01 00:28:04,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-01 00:28:04,630 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:04,630 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 100 states. [2018-10-01 00:28:05,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:05,111 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-01 00:28:05,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-01 00:28:05,112 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 100 [2018-10-01 00:28:05,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:05,112 INFO L225 Difference]: With dead ends: 104 [2018-10-01 00:28:05,112 INFO L226 Difference]: Without dead ends: 102 [2018-10-01 00:28:05,113 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:28:05,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-10-01 00:28:05,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-10-01 00:28:05,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-10-01 00:28:05,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-10-01 00:28:05,115 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-10-01 00:28:05,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:05,115 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-10-01 00:28:05,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-01 00:28:05,115 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-10-01 00:28:05,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-01 00:28:05,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:05,116 INFO L375 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-10-01 00:28:05,116 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:05,116 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:05,116 INFO L82 PathProgramCache]: Analyzing trace with hash -684368863, now seen corresponding path program 98 times [2018-10-01 00:28:05,116 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:05,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:05,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:05,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:05,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:05,711 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:05,711 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:28:05,718 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:28:05,860 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:28:05,860 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:05,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:06,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:06,061 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:06,062 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-01 00:28:06,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-01 00:28:06,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-01 00:28:06,063 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:06,063 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2018-10-01 00:28:06,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:06,813 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-01 00:28:06,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-01 00:28:06,814 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2018-10-01 00:28:06,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:06,814 INFO L225 Difference]: With dead ends: 105 [2018-10-01 00:28:06,814 INFO L226 Difference]: Without dead ends: 103 [2018-10-01 00:28:06,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:28:06,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-01 00:28:06,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-01 00:28:06,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-01 00:28:06,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-01 00:28:06,818 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-10-01 00:28:06,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:06,818 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-01 00:28:06,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-01 00:28:06,818 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-01 00:28:06,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-01 00:28:06,819 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:06,819 INFO L375 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-10-01 00:28:06,819 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:06,819 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:06,819 INFO L82 PathProgramCache]: Analyzing trace with hash 259399752, now seen corresponding path program 99 times [2018-10-01 00:28:06,820 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:06,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:06,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:06,820 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:06,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:07,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:07,541 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:07,541 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 [2018-10-01 00:28:07,548 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:28:07,766 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2018-10-01 00:28:07,766 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:07,771 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:07,969 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:07,970 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-01 00:28:07,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-01 00:28:07,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-01 00:28:07,971 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:07,971 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 102 states. [2018-10-01 00:28:08,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:08,727 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-10-01 00:28:08,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-01 00:28:08,727 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102 [2018-10-01 00:28:08,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:08,728 INFO L225 Difference]: With dead ends: 106 [2018-10-01 00:28:08,728 INFO L226 Difference]: Without dead ends: 104 [2018-10-01 00:28:08,728 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:28:08,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-01 00:28:08,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-10-01 00:28:08,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-01 00:28:08,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-10-01 00:28:08,730 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-10-01 00:28:08,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:08,730 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-10-01 00:28:08,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-01 00:28:08,731 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-10-01 00:28:08,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-01 00:28:08,731 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:08,731 INFO L375 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-10-01 00:28:08,731 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:08,732 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:08,732 INFO L82 PathProgramCache]: Analyzing trace with hash -548544255, now seen corresponding path program 100 times [2018-10-01 00:28:08,732 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:08,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:08,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:08,733 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:08,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:09,322 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:09,322 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:09,322 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 [2018-10-01 00:28:09,330 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:28:09,473 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:28:09,474 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:09,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:09,660 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:09,680 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:09,680 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-01 00:28:09,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-01 00:28:09,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-01 00:28:09,681 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:09,681 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 103 states. [2018-10-01 00:28:10,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:10,454 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-01 00:28:10,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-01 00:28:10,454 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 103 [2018-10-01 00:28:10,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:10,455 INFO L225 Difference]: With dead ends: 107 [2018-10-01 00:28:10,455 INFO L226 Difference]: Without dead ends: 105 [2018-10-01 00:28:10,455 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:28:10,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-01 00:28:10,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-01 00:28:10,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-01 00:28:10,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-01 00:28:10,458 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-10-01 00:28:10,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:10,458 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-01 00:28:10,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-01 00:28:10,459 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-01 00:28:10,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-01 00:28:10,459 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:10,459 INFO L375 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-10-01 00:28:10,460 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:10,460 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:10,460 INFO L82 PathProgramCache]: Analyzing trace with hash 174995304, now seen corresponding path program 101 times [2018-10-01 00:28:10,460 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:10,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:10,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:10,461 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:10,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:11,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:11,088 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:11,088 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:28:11,095 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:28:11,314 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2018-10-01 00:28:11,314 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:11,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:11,503 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:11,524 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:11,524 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-01 00:28:11,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-01 00:28:11,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-01 00:28:11,526 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:11,526 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 104 states. [2018-10-01 00:28:12,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:12,304 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-10-01 00:28:12,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-01 00:28:12,304 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 104 [2018-10-01 00:28:12,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:12,305 INFO L225 Difference]: With dead ends: 108 [2018-10-01 00:28:12,305 INFO L226 Difference]: Without dead ends: 106 [2018-10-01 00:28:12,305 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:28:12,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-01 00:28:12,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-01 00:28:12,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-01 00:28:12,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-01 00:28:12,308 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-10-01 00:28:12,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:12,308 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-01 00:28:12,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-01 00:28:12,309 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-01 00:28:12,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-01 00:28:12,309 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:12,309 INFO L375 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-10-01 00:28:12,310 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:12,310 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:12,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1129885153, now seen corresponding path program 102 times [2018-10-01 00:28:12,310 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:12,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:12,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:12,311 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:12,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:13,200 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:13,200 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:13,200 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 [2018-10-01 00:28:13,207 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:28:13,421 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2018-10-01 00:28:13,421 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:13,426 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:13,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:13,643 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:13,644 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-01 00:28:13,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-01 00:28:13,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-01 00:28:13,645 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:13,645 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2018-10-01 00:28:14,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:14,482 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-01 00:28:14,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-01 00:28:14,482 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2018-10-01 00:28:14,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:14,483 INFO L225 Difference]: With dead ends: 109 [2018-10-01 00:28:14,483 INFO L226 Difference]: Without dead ends: 107 [2018-10-01 00:28:14,483 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:28:14,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-01 00:28:14,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-01 00:28:14,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-01 00:28:14,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-01 00:28:14,487 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-10-01 00:28:14,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:14,487 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-01 00:28:14,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-01 00:28:14,487 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-01 00:28:14,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-01 00:28:14,487 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:14,488 INFO L375 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-10-01 00:28:14,488 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:14,488 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:14,488 INFO L82 PathProgramCache]: Analyzing trace with hash 666699400, now seen corresponding path program 103 times [2018-10-01 00:28:14,488 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:14,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:14,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:14,489 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:14,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:15,135 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:15,135 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:15,135 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:15,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:15,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:15,565 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:15,587 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:15,587 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-01 00:28:15,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-01 00:28:15,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-01 00:28:15,588 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:15,588 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 106 states. [2018-10-01 00:28:16,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:16,108 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-10-01 00:28:16,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-01 00:28:16,109 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 106 [2018-10-01 00:28:16,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:16,109 INFO L225 Difference]: With dead ends: 110 [2018-10-01 00:28:16,109 INFO L226 Difference]: Without dead ends: 108 [2018-10-01 00:28:16,109 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:28:16,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-01 00:28:16,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-10-01 00:28:16,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-10-01 00:28:16,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-10-01 00:28:16,112 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-10-01 00:28:16,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:16,112 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-10-01 00:28:16,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-01 00:28:16,113 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-10-01 00:28:16,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-01 00:28:16,113 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:16,113 INFO L375 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-10-01 00:28:16,114 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:16,114 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:16,114 INFO L82 PathProgramCache]: Analyzing trace with hash -807157055, now seen corresponding path program 104 times [2018-10-01 00:28:16,114 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:16,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:16,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:16,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:16,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:16,759 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:16,760 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:16,760 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:16,766 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:28:16,914 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:28:16,915 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:16,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:17,180 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:17,200 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:17,200 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-01 00:28:17,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-01 00:28:17,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-01 00:28:17,202 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:17,202 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 107 states. [2018-10-01 00:28:18,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:18,018 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-01 00:28:18,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-01 00:28:18,018 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 107 [2018-10-01 00:28:18,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:18,019 INFO L225 Difference]: With dead ends: 111 [2018-10-01 00:28:18,019 INFO L226 Difference]: Without dead ends: 109 [2018-10-01 00:28:18,019 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:28:18,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-01 00:28:18,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-01 00:28:18,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-01 00:28:18,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-01 00:28:18,021 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-10-01 00:28:18,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:18,023 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-01 00:28:18,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-01 00:28:18,024 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-01 00:28:18,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-01 00:28:18,024 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:18,024 INFO L375 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-10-01 00:28:18,024 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:18,024 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:18,025 INFO L82 PathProgramCache]: Analyzing trace with hash 747933096, now seen corresponding path program 105 times [2018-10-01 00:28:18,025 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:18,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:18,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:18,025 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:18,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:18,621 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:18,621 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:18,634 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:28:18,864 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-10-01 00:28:18,865 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:18,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:19,083 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:19,084 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-01 00:28:19,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-01 00:28:19,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-01 00:28:19,085 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:19,085 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 108 states. [2018-10-01 00:28:19,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:19,942 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-10-01 00:28:19,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-01 00:28:19,942 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 108 [2018-10-01 00:28:19,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:19,943 INFO L225 Difference]: With dead ends: 112 [2018-10-01 00:28:19,943 INFO L226 Difference]: Without dead ends: 110 [2018-10-01 00:28:19,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:28:19,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-01 00:28:19,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-10-01 00:28:19,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-01 00:28:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-10-01 00:28:19,945 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-10-01 00:28:19,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:19,945 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-10-01 00:28:19,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-01 00:28:19,945 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-10-01 00:28:19,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-01 00:28:19,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:19,946 INFO L375 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-10-01 00:28:19,946 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:19,946 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:19,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1711087521, now seen corresponding path program 106 times [2018-10-01 00:28:19,947 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:19,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:19,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:19,947 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:19,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:20,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:20,570 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:20,570 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:20,578 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:28:20,727 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:28:20,727 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:20,732 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:20,939 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:20,940 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-01 00:28:20,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-01 00:28:20,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-01 00:28:20,941 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:20,941 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 109 states. [2018-10-01 00:28:21,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:21,694 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-01 00:28:21,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-01 00:28:21,694 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 109 [2018-10-01 00:28:21,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:21,694 INFO L225 Difference]: With dead ends: 113 [2018-10-01 00:28:21,694 INFO L226 Difference]: Without dead ends: 111 [2018-10-01 00:28:21,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:28:21,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-01 00:28:21,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-01 00:28:21,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-01 00:28:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-01 00:28:21,698 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-10-01 00:28:21,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:21,698 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-01 00:28:21,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-01 00:28:21,698 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-01 00:28:21,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-01 00:28:21,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:21,699 INFO L375 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-10-01 00:28:21,699 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:21,699 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:21,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1504103624, now seen corresponding path program 107 times [2018-10-01 00:28:21,700 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:21,700 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:21,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:21,700 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:21,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:22,497 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:22,497 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:22,497 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:22,505 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:28:22,743 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-01 00:28:22,743 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:22,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:23,078 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:23,099 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:23,099 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-01 00:28:23,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-01 00:28:23,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-01 00:28:23,100 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:23,100 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 110 states. [2018-10-01 00:28:24,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:24,006 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-10-01 00:28:24,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-01 00:28:24,006 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 110 [2018-10-01 00:28:24,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:24,007 INFO L225 Difference]: With dead ends: 114 [2018-10-01 00:28:24,007 INFO L226 Difference]: Without dead ends: 112 [2018-10-01 00:28:24,007 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:28:24,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-10-01 00:28:24,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-10-01 00:28:24,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-01 00:28:24,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-10-01 00:28:24,009 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2018-10-01 00:28:24,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:24,009 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-10-01 00:28:24,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-01 00:28:24,009 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-10-01 00:28:24,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-01 00:28:24,010 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:24,010 INFO L375 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2018-10-01 00:28:24,010 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:24,010 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:24,010 INFO L82 PathProgramCache]: Analyzing trace with hash -617429887, now seen corresponding path program 108 times [2018-10-01 00:28:24,010 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:24,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:24,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:24,011 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:24,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:24,648 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:24,648 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:24,656 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:28:24,912 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-01 00:28:24,912 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:24,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:25,110 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:25,132 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:25,133 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-01 00:28:25,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-01 00:28:25,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-01 00:28:25,134 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:25,134 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 111 states. [2018-10-01 00:28:25,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:25,724 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-01 00:28:25,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-01 00:28:25,725 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 111 [2018-10-01 00:28:25,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:25,725 INFO L225 Difference]: With dead ends: 115 [2018-10-01 00:28:25,725 INFO L226 Difference]: Without dead ends: 113 [2018-10-01 00:28:25,725 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:28:25,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-01 00:28:25,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-01 00:28:25,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-01 00:28:25,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-10-01 00:28:25,729 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 111 [2018-10-01 00:28:25,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:25,729 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-10-01 00:28:25,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-01 00:28:25,729 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-10-01 00:28:25,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-01 00:28:25,730 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:25,730 INFO L375 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2018-10-01 00:28:25,730 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:25,730 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:25,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1960459288, now seen corresponding path program 109 times [2018-10-01 00:28:25,730 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:25,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:25,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:25,731 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:25,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:26,381 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:26,381 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:26,382 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:26,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:26,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:26,780 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:26,780 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-01 00:28:26,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-01 00:28:26,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-01 00:28:26,782 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:26,782 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 112 states. [2018-10-01 00:28:27,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:27,694 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2018-10-01 00:28:27,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-01 00:28:27,695 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 112 [2018-10-01 00:28:27,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:27,695 INFO L225 Difference]: With dead ends: 116 [2018-10-01 00:28:27,695 INFO L226 Difference]: Without dead ends: 114 [2018-10-01 00:28:27,696 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:28:27,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-10-01 00:28:27,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-10-01 00:28:27,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-10-01 00:28:27,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-10-01 00:28:27,698 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 112 [2018-10-01 00:28:27,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:27,698 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-10-01 00:28:27,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-01 00:28:27,699 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-10-01 00:28:27,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-01 00:28:27,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:27,699 INFO L375 BasicCegarLoop]: trace histogram [110, 1, 1, 1] [2018-10-01 00:28:27,699 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:27,700 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:27,700 INFO L82 PathProgramCache]: Analyzing trace with hash -644697759, now seen corresponding path program 110 times [2018-10-01 00:28:27,700 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:27,700 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:27,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:27,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:27,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:28,604 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:28,604 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:28,604 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:28,613 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:28:28,770 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:28:28,771 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:28,775 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:29,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:29,033 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:29,034 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-10-01 00:28:29,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-01 00:28:29,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-01 00:28:29,035 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:29,036 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 113 states. [2018-10-01 00:28:29,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:29,907 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-01 00:28:29,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-01 00:28:29,907 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 113 [2018-10-01 00:28:29,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:29,908 INFO L225 Difference]: With dead ends: 117 [2018-10-01 00:28:29,908 INFO L226 Difference]: Without dead ends: 115 [2018-10-01 00:28:29,908 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:28:29,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-01 00:28:29,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-01 00:28:29,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-01 00:28:29,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-01 00:28:29,911 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 113 [2018-10-01 00:28:29,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:29,912 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-01 00:28:29,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-01 00:28:29,912 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-01 00:28:29,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-01 00:28:29,912 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:29,912 INFO L375 BasicCegarLoop]: trace histogram [111, 1, 1, 1] [2018-10-01 00:28:29,913 INFO L423 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:29,913 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:29,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1489203976, now seen corresponding path program 111 times [2018-10-01 00:28:29,913 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:29,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:29,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:29,914 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:29,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:30,641 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:30,641 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:30,647 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:28:30,923 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2018-10-01 00:28:30,924 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:30,929 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:31,136 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:31,157 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:31,157 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-10-01 00:28:31,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-01 00:28:31,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-01 00:28:31,159 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:31,159 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 114 states. [2018-10-01 00:28:32,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:32,011 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-10-01 00:28:32,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-01 00:28:32,011 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 114 [2018-10-01 00:28:32,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:32,011 INFO L225 Difference]: With dead ends: 118 [2018-10-01 00:28:32,011 INFO L226 Difference]: Without dead ends: 116 [2018-10-01 00:28:32,012 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:28:32,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-10-01 00:28:32,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-10-01 00:28:32,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-10-01 00:28:32,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-10-01 00:28:32,015 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 114 [2018-10-01 00:28:32,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:32,015 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-10-01 00:28:32,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-01 00:28:32,015 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-10-01 00:28:32,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-01 00:28:32,016 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:32,016 INFO L375 BasicCegarLoop]: trace histogram [112, 1, 1, 1] [2018-10-01 00:28:32,016 INFO L423 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:32,016 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:32,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1079318975, now seen corresponding path program 112 times [2018-10-01 00:28:32,017 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:32,017 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:32,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:32,017 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:32,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:32,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:32,681 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:32,681 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:32,689 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:28:32,876 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:28:32,876 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:32,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:33,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:33,426 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:33,426 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-10-01 00:28:33,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-10-01 00:28:33,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-10-01 00:28:33,428 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:33,428 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 115 states. [2018-10-01 00:28:34,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:34,184 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-10-01 00:28:34,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-10-01 00:28:34,185 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 115 [2018-10-01 00:28:34,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:34,185 INFO L225 Difference]: With dead ends: 119 [2018-10-01 00:28:34,185 INFO L226 Difference]: Without dead ends: 117 [2018-10-01 00:28:34,185 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:28:34,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-01 00:28:34,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-01 00:28:34,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-01 00:28:34,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-10-01 00:28:34,187 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 115 [2018-10-01 00:28:34,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:34,188 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-10-01 00:28:34,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-10-01 00:28:34,188 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-10-01 00:28:34,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-01 00:28:34,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:34,188 INFO L375 BasicCegarLoop]: trace histogram [113, 1, 1, 1] [2018-10-01 00:28:34,188 INFO L423 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:34,189 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:34,189 INFO L82 PathProgramCache]: Analyzing trace with hash 900848168, now seen corresponding path program 113 times [2018-10-01 00:28:34,189 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:34,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:34,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:34,189 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:34,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:34,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:34,960 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:34,960 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:34,967 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:28:35,223 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2018-10-01 00:28:35,223 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:35,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:35,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:35,456 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:35,456 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-10-01 00:28:35,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-01 00:28:35,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-01 00:28:35,458 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:35,458 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 116 states. [2018-10-01 00:28:36,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:36,155 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-10-01 00:28:36,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-01 00:28:36,155 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 116 [2018-10-01 00:28:36,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:36,156 INFO L225 Difference]: With dead ends: 120 [2018-10-01 00:28:36,156 INFO L226 Difference]: Without dead ends: 118 [2018-10-01 00:28:36,156 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:28:36,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-01 00:28:36,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-10-01 00:28:36,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-10-01 00:28:36,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-10-01 00:28:36,158 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 116 [2018-10-01 00:28:36,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:36,159 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-10-01 00:28:36,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-01 00:28:36,159 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-10-01 00:28:36,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-01 00:28:36,159 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:36,159 INFO L375 BasicCegarLoop]: trace histogram [114, 1, 1, 1] [2018-10-01 00:28:36,159 INFO L423 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:36,159 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:36,160 INFO L82 PathProgramCache]: Analyzing trace with hash -2138479839, now seen corresponding path program 114 times [2018-10-01 00:28:36,160 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:36,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:36,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:36,160 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:36,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:36,857 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:36,857 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:36,858 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:36,864 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:28:37,113 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2018-10-01 00:28:37,113 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:37,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:37,323 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:37,345 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:37,345 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2018-10-01 00:28:37,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-10-01 00:28:37,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-10-01 00:28:37,347 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:37,347 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 117 states. [2018-10-01 00:28:38,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:38,307 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-01 00:28:38,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-10-01 00:28:38,307 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 117 [2018-10-01 00:28:38,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:38,308 INFO L225 Difference]: With dead ends: 121 [2018-10-01 00:28:38,308 INFO L226 Difference]: Without dead ends: 119 [2018-10-01 00:28:38,308 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:28:38,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-01 00:28:38,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-01 00:28:38,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-01 00:28:38,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-01 00:28:38,312 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 117 [2018-10-01 00:28:38,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:38,312 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-01 00:28:38,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-10-01 00:28:38,312 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-01 00:28:38,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-01 00:28:38,313 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:38,313 INFO L375 BasicCegarLoop]: trace histogram [115, 1, 1, 1] [2018-10-01 00:28:38,313 INFO L423 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:38,313 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:38,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1868367544, now seen corresponding path program 115 times [2018-10-01 00:28:38,313 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:38,313 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:38,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:38,314 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:38,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:39,010 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:39,010 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:39,010 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:39,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:39,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:39,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:39,420 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:39,420 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2018-10-01 00:28:39,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-10-01 00:28:39,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-10-01 00:28:39,422 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:39,422 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 118 states. [2018-10-01 00:28:40,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:40,309 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2018-10-01 00:28:40,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-10-01 00:28:40,310 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 118 [2018-10-01 00:28:40,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:40,310 INFO L225 Difference]: With dead ends: 122 [2018-10-01 00:28:40,310 INFO L226 Difference]: Without dead ends: 120 [2018-10-01 00:28:40,310 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:28:40,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-10-01 00:28:40,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-10-01 00:28:40,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-10-01 00:28:40,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-10-01 00:28:40,313 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 118 [2018-10-01 00:28:40,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:40,313 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-10-01 00:28:40,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-10-01 00:28:40,313 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-10-01 00:28:40,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-01 00:28:40,313 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:40,313 INFO L375 BasicCegarLoop]: trace histogram [116, 1, 1, 1] [2018-10-01 00:28:40,313 INFO L423 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:40,314 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:40,314 INFO L82 PathProgramCache]: Analyzing trace with hash -2084820991, now seen corresponding path program 116 times [2018-10-01 00:28:40,314 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:40,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:40,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:40,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:40,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:41,010 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:41,010 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:41,010 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:41,018 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:28:41,187 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:28:41,187 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:41,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:41,403 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:41,426 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:41,426 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2018-10-01 00:28:41,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-10-01 00:28:41,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-10-01 00:28:41,427 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:41,428 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 119 states. [2018-10-01 00:28:42,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:42,069 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-10-01 00:28:42,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-10-01 00:28:42,070 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 119 [2018-10-01 00:28:42,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:42,070 INFO L225 Difference]: With dead ends: 123 [2018-10-01 00:28:42,070 INFO L226 Difference]: Without dead ends: 121 [2018-10-01 00:28:42,070 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:28:42,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-01 00:28:42,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-01 00:28:42,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-01 00:28:42,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-10-01 00:28:42,073 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 119 [2018-10-01 00:28:42,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:42,073 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-10-01 00:28:42,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-10-01 00:28:42,073 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-10-01 00:28:42,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-01 00:28:42,074 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:42,074 INFO L375 BasicCegarLoop]: trace histogram [117, 1, 1, 1] [2018-10-01 00:28:42,074 INFO L423 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:42,075 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:42,075 INFO L82 PathProgramCache]: Analyzing trace with hash -204943256, now seen corresponding path program 117 times [2018-10-01 00:28:42,075 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:42,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:42,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:42,076 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:42,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:42,811 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:42,811 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:42,812 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:42,819 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:28:43,083 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2018-10-01 00:28:43,083 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:43,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:43,481 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:43,503 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:43,503 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2018-10-01 00:28:43,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-10-01 00:28:43,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-10-01 00:28:43,505 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:43,505 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 120 states. [2018-10-01 00:28:44,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:44,329 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-10-01 00:28:44,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-10-01 00:28:44,329 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 120 [2018-10-01 00:28:44,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:44,330 INFO L225 Difference]: With dead ends: 124 [2018-10-01 00:28:44,330 INFO L226 Difference]: Without dead ends: 122 [2018-10-01 00:28:44,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:28:44,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-10-01 00:28:44,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-10-01 00:28:44,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-10-01 00:28:44,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-10-01 00:28:44,333 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 120 [2018-10-01 00:28:44,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:44,333 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-10-01 00:28:44,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-10-01 00:28:44,334 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-10-01 00:28:44,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-01 00:28:44,334 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:44,334 INFO L375 BasicCegarLoop]: trace histogram [118, 1, 1, 1] [2018-10-01 00:28:44,334 INFO L423 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:44,334 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:44,334 INFO L82 PathProgramCache]: Analyzing trace with hash -2058275615, now seen corresponding path program 118 times [2018-10-01 00:28:44,334 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:44,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:44,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:44,335 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:44,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:45,096 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:45,096 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:45,096 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:45,103 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:28:45,281 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:28:45,281 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:45,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:45,509 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:45,530 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:45,530 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 120 [2018-10-01 00:28:45,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-10-01 00:28:45,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-10-01 00:28:45,532 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:45,532 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 121 states. [2018-10-01 00:28:46,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:46,439 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-01 00:28:46,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-10-01 00:28:46,440 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 121 [2018-10-01 00:28:46,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:46,440 INFO L225 Difference]: With dead ends: 125 [2018-10-01 00:28:46,440 INFO L226 Difference]: Without dead ends: 123 [2018-10-01 00:28:46,441 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:28:46,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-01 00:28:46,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-01 00:28:46,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-01 00:28:46,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-10-01 00:28:46,443 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 121 [2018-10-01 00:28:46,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:46,443 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-10-01 00:28:46,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-10-01 00:28:46,443 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-10-01 00:28:46,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-01 00:28:46,443 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:46,444 INFO L375 BasicCegarLoop]: trace histogram [119, 1, 1, 1] [2018-10-01 00:28:46,444 INFO L423 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:46,444 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:46,444 INFO L82 PathProgramCache]: Analyzing trace with hash 617963400, now seen corresponding path program 119 times [2018-10-01 00:28:46,444 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:46,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:46,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:46,445 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:46,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:47,166 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:47,166 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:47,166 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:47,173 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:28:47,452 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2018-10-01 00:28:47,452 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:47,459 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:47,721 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:47,721 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 121 [2018-10-01 00:28:47,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-10-01 00:28:47,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-10-01 00:28:47,722 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:47,722 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 122 states. [2018-10-01 00:28:48,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:48,369 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2018-10-01 00:28:48,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-10-01 00:28:48,370 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 122 [2018-10-01 00:28:48,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:48,370 INFO L225 Difference]: With dead ends: 126 [2018-10-01 00:28:48,370 INFO L226 Difference]: Without dead ends: 124 [2018-10-01 00:28:48,370 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:28:48,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-10-01 00:28:48,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-10-01 00:28:48,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-10-01 00:28:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-10-01 00:28:48,376 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 122 [2018-10-01 00:28:48,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:48,376 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-10-01 00:28:48,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-10-01 00:28:48,376 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-10-01 00:28:48,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-01 00:28:48,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:48,377 INFO L375 BasicCegarLoop]: trace histogram [120, 1, 1, 1] [2018-10-01 00:28:48,377 INFO L423 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:48,377 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:48,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1976994241, now seen corresponding path program 120 times [2018-10-01 00:28:48,378 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:48,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:48,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:48,378 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:48,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:49,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:49,205 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:49,205 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:49,212 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:28:49,480 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-01 00:28:49,480 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:49,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:49,704 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:49,726 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:49,727 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 122 [2018-10-01 00:28:49,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-10-01 00:28:49,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-10-01 00:28:49,728 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:49,728 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 123 states. [2018-10-01 00:28:50,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:50,668 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-10-01 00:28:50,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-10-01 00:28:50,669 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 123 [2018-10-01 00:28:50,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:50,669 INFO L225 Difference]: With dead ends: 127 [2018-10-01 00:28:50,669 INFO L226 Difference]: Without dead ends: 125 [2018-10-01 00:28:50,670 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:28:50,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-10-01 00:28:50,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-10-01 00:28:50,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-01 00:28:50,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-10-01 00:28:50,672 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 123 [2018-10-01 00:28:50,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:50,672 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-10-01 00:28:50,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-10-01 00:28:50,672 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-10-01 00:28:50,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-01 00:28:50,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:50,673 INFO L375 BasicCegarLoop]: trace histogram [121, 1, 1, 1] [2018-10-01 00:28:50,673 INFO L423 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:50,673 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:50,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1157277352, now seen corresponding path program 121 times [2018-10-01 00:28:50,673 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:50,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:50,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:50,674 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:50,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:51,424 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:51,424 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:51,425 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:51,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:51,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:51,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:51,860 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:51,860 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 123 [2018-10-01 00:28:51,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-10-01 00:28:51,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-10-01 00:28:51,862 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:51,862 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 124 states. [2018-10-01 00:28:52,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:52,764 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2018-10-01 00:28:52,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-10-01 00:28:52,764 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 124 [2018-10-01 00:28:52,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:52,764 INFO L225 Difference]: With dead ends: 128 [2018-10-01 00:28:52,765 INFO L226 Difference]: Without dead ends: 126 [2018-10-01 00:28:52,765 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:28:52,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-10-01 00:28:52,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-10-01 00:28:52,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-10-01 00:28:52,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-10-01 00:28:52,767 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 124 [2018-10-01 00:28:52,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:52,767 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-10-01 00:28:52,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-10-01 00:28:52,767 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-10-01 00:28:52,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-01 00:28:52,767 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:52,768 INFO L375 BasicCegarLoop]: trace histogram [122, 1, 1, 1] [2018-10-01 00:28:52,768 INFO L423 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:52,768 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:52,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1515857569, now seen corresponding path program 122 times [2018-10-01 00:28:52,768 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:52,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:52,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:52,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:52,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:53,652 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:53,652 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:53,652 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:53,659 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:28:53,843 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:28:53,843 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:53,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:54,072 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:54,092 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:54,093 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 124 [2018-10-01 00:28:54,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-10-01 00:28:54,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-10-01 00:28:54,094 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:54,094 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 125 states. [2018-10-01 00:28:55,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:55,045 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-01 00:28:55,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-10-01 00:28:55,045 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 125 [2018-10-01 00:28:55,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:55,046 INFO L225 Difference]: With dead ends: 129 [2018-10-01 00:28:55,046 INFO L226 Difference]: Without dead ends: 127 [2018-10-01 00:28:55,046 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:28:55,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-01 00:28:55,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-01 00:28:55,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-01 00:28:55,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-01 00:28:55,048 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 125 [2018-10-01 00:28:55,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:55,048 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-01 00:28:55,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-10-01 00:28:55,049 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-01 00:28:55,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-01 00:28:55,049 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:55,049 INFO L375 BasicCegarLoop]: trace histogram [123, 1, 1, 1] [2018-10-01 00:28:55,049 INFO L423 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:55,050 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:55,050 INFO L82 PathProgramCache]: Analyzing trace with hash -253057592, now seen corresponding path program 123 times [2018-10-01 00:28:55,050 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:55,050 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:55,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:55,051 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:55,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:55,831 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:55,831 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:55,838 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:28:56,128 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2018-10-01 00:28:56,128 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:56,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:56,356 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:56,377 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:56,377 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 125 [2018-10-01 00:28:56,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-10-01 00:28:56,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-10-01 00:28:56,379 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:56,379 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 126 states. [2018-10-01 00:28:57,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:57,437 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-10-01 00:28:57,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-10-01 00:28:57,437 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 126 [2018-10-01 00:28:57,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:57,438 INFO L225 Difference]: With dead ends: 130 [2018-10-01 00:28:57,438 INFO L226 Difference]: Without dead ends: 128 [2018-10-01 00:28:57,438 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:28:57,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-10-01 00:28:57,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-10-01 00:28:57,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-10-01 00:28:57,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-10-01 00:28:57,440 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 126 [2018-10-01 00:28:57,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:57,440 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-10-01 00:28:57,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-10-01 00:28:57,441 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-10-01 00:28:57,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-01 00:28:57,441 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:57,441 INFO L375 BasicCegarLoop]: trace histogram [124, 1, 1, 1] [2018-10-01 00:28:57,441 INFO L423 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:57,441 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:57,441 INFO L82 PathProgramCache]: Analyzing trace with hash 745147265, now seen corresponding path program 124 times [2018-10-01 00:28:57,441 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:57,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:57,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:57,442 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:57,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:58,245 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:58,245 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:58,245 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:58,254 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:28:58,441 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:28:58,441 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:58,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:58,799 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:58,819 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:58,819 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 126 [2018-10-01 00:28:58,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-10-01 00:28:58,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-10-01 00:28:58,821 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:58,821 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 127 states. [2018-10-01 00:28:59,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:59,774 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-01 00:28:59,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-10-01 00:28:59,775 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 127 [2018-10-01 00:28:59,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:59,775 INFO L225 Difference]: With dead ends: 131 [2018-10-01 00:28:59,775 INFO L226 Difference]: Without dead ends: 129 [2018-10-01 00:28:59,775 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:28:59,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-01 00:28:59,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-10-01 00:28:59,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-01 00:28:59,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-10-01 00:28:59,778 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 127 [2018-10-01 00:28:59,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:59,779 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-10-01 00:28:59,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-10-01 00:28:59,779 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-10-01 00:28:59,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-01 00:28:59,779 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:59,779 INFO L375 BasicCegarLoop]: trace histogram [125, 1, 1, 1] [2018-10-01 00:28:59,779 INFO L423 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:59,779 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:59,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1624726760, now seen corresponding path program 125 times [2018-10-01 00:28:59,780 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:59,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:59,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:59,780 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:59,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:00,535 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:00,535 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:00,535 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:00,542 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:29:00,851 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2018-10-01 00:29:00,851 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:00,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:01,128 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:01,149 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:01,149 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 127 [2018-10-01 00:29:01,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-10-01 00:29:01,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-10-01 00:29:01,151 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:01,151 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 128 states. [2018-10-01 00:29:01,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:01,979 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2018-10-01 00:29:01,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-10-01 00:29:01,980 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 128 [2018-10-01 00:29:01,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:01,980 INFO L225 Difference]: With dead ends: 132 [2018-10-01 00:29:01,980 INFO L226 Difference]: Without dead ends: 130 [2018-10-01 00:29:01,980 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:29:01,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-10-01 00:29:01,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-10-01 00:29:01,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-10-01 00:29:01,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-10-01 00:29:01,983 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 128 [2018-10-01 00:29:01,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:01,984 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-10-01 00:29:01,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-10-01 00:29:01,984 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-10-01 00:29:01,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-01 00:29:01,985 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:01,985 INFO L375 BasicCegarLoop]: trace histogram [126, 1, 1, 1] [2018-10-01 00:29:01,985 INFO L423 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:01,985 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:01,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1173079967, now seen corresponding path program 126 times [2018-10-01 00:29:01,985 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:01,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:01,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:01,986 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:01,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:02,761 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:02,761 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:02,761 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:02,768 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:29:03,059 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2018-10-01 00:29:03,060 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:03,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:03,297 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:03,317 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:03,318 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 128 [2018-10-01 00:29:03,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-10-01 00:29:03,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-10-01 00:29:03,319 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:03,319 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 129 states. [2018-10-01 00:29:04,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:04,281 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-01 00:29:04,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-10-01 00:29:04,282 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 129 [2018-10-01 00:29:04,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:04,282 INFO L225 Difference]: With dead ends: 133 [2018-10-01 00:29:04,282 INFO L226 Difference]: Without dead ends: 131 [2018-10-01 00:29:04,283 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:29:04,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-01 00:29:04,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-01 00:29:04,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-01 00:29:04,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-10-01 00:29:04,285 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 129 [2018-10-01 00:29:04,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:04,285 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-10-01 00:29:04,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-10-01 00:29:04,285 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-10-01 00:29:04,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-01 00:29:04,286 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:04,286 INFO L375 BasicCegarLoop]: trace histogram [127, 1, 1, 1] [2018-10-01 00:29:04,286 INFO L423 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:04,286 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:04,286 INFO L82 PathProgramCache]: Analyzing trace with hash -2005742584, now seen corresponding path program 127 times [2018-10-01 00:29:04,287 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:04,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:04,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:04,287 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:04,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:05,081 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:05,082 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:05,082 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:05,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:29:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:05,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:05,515 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:05,535 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:05,536 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 129 [2018-10-01 00:29:05,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-10-01 00:29:05,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-10-01 00:29:05,538 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:05,538 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 130 states. [2018-10-01 00:29:06,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:06,565 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2018-10-01 00:29:06,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-10-01 00:29:06,565 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 130 [2018-10-01 00:29:06,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:06,566 INFO L225 Difference]: With dead ends: 134 [2018-10-01 00:29:06,566 INFO L226 Difference]: Without dead ends: 132 [2018-10-01 00:29:06,567 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:29:06,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-10-01 00:29:06,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-10-01 00:29:06,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-10-01 00:29:06,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-10-01 00:29:06,570 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 130 [2018-10-01 00:29:06,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:06,570 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-10-01 00:29:06,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-10-01 00:29:06,570 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-10-01 00:29:06,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-01 00:29:06,571 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:06,571 INFO L375 BasicCegarLoop]: trace histogram [128, 1, 1, 1] [2018-10-01 00:29:06,571 INFO L423 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:06,571 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:06,572 INFO L82 PathProgramCache]: Analyzing trace with hash -2048479935, now seen corresponding path program 128 times [2018-10-01 00:29:06,572 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:06,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:06,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:06,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:29:06,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:07,373 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:07,373 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:07,373 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:07,381 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:29:07,564 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:29:07,565 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:07,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:07,806 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:07,827 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:07,827 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130] total 130 [2018-10-01 00:29:07,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-10-01 00:29:07,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-10-01 00:29:07,829 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:07,830 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 131 states. [2018-10-01 00:29:09,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:09,133 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-10-01 00:29:09,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-10-01 00:29:09,134 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 131 [2018-10-01 00:29:09,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:09,134 INFO L225 Difference]: With dead ends: 135 [2018-10-01 00:29:09,134 INFO L226 Difference]: Without dead ends: 133 [2018-10-01 00:29:09,135 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:29:09,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-01 00:29:09,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-01 00:29:09,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-01 00:29:09,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-01 00:29:09,138 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 131 [2018-10-01 00:29:09,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:09,139 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-01 00:29:09,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-10-01 00:29:09,139 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-01 00:29:09,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-01 00:29:09,139 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:09,139 INFO L375 BasicCegarLoop]: trace histogram [129, 1, 1, 1] [2018-10-01 00:29:09,140 INFO L423 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:09,140 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:09,140 INFO L82 PathProgramCache]: Analyzing trace with hash 921629480, now seen corresponding path program 129 times [2018-10-01 00:29:09,140 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:09,140 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:09,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:09,141 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:09,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:09,979 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:09,979 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:09,979 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:09,986 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:29:10,305 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2018-10-01 00:29:10,306 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:10,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:10,547 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:10,568 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:10,568 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131] total 131 [2018-10-01 00:29:10,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-10-01 00:29:10,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-10-01 00:29:10,570 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:10,570 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 132 states. [2018-10-01 00:29:11,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:11,695 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2018-10-01 00:29:11,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-10-01 00:29:11,695 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 132 [2018-10-01 00:29:11,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:11,695 INFO L225 Difference]: With dead ends: 136 [2018-10-01 00:29:11,696 INFO L226 Difference]: Without dead ends: 134 [2018-10-01 00:29:11,696 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:29:11,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-10-01 00:29:11,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-10-01 00:29:11,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-10-01 00:29:11,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-10-01 00:29:11,699 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 132 [2018-10-01 00:29:11,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:11,699 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-10-01 00:29:11,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-10-01 00:29:11,699 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-10-01 00:29:11,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-01 00:29:11,700 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:11,700 INFO L375 BasicCegarLoop]: trace histogram [130, 1, 1, 1] [2018-10-01 00:29:11,700 INFO L423 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:11,700 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:11,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1494259167, now seen corresponding path program 130 times [2018-10-01 00:29:11,700 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:11,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:11,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:11,701 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:11,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:12,601 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:12,601 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:12,608 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:29:12,798 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:29:12,798 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:12,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:13,061 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:13,061 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 132] total 132 [2018-10-01 00:29:13,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-10-01 00:29:13,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-10-01 00:29:13,063 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:13,063 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 133 states. [2018-10-01 00:29:14,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:14,259 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-10-01 00:29:14,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-10-01 00:29:14,260 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 133 [2018-10-01 00:29:14,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:14,260 INFO L225 Difference]: With dead ends: 137 [2018-10-01 00:29:14,260 INFO L226 Difference]: Without dead ends: 135 [2018-10-01 00:29:14,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:29:14,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-01 00:29:14,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-01 00:29:14,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-01 00:29:14,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-01 00:29:14,263 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 133 [2018-10-01 00:29:14,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:14,264 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-01 00:29:14,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-10-01 00:29:14,264 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-01 00:29:14,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-01 00:29:14,264 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:14,264 INFO L375 BasicCegarLoop]: trace histogram [131, 1, 1, 1] [2018-10-01 00:29:14,264 INFO L423 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:14,264 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:14,265 INFO L82 PathProgramCache]: Analyzing trace with hash 922604104, now seen corresponding path program 131 times [2018-10-01 00:29:14,265 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:14,265 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:14,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:14,265 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:14,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:15,071 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:15,071 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:15,071 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:15,078 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:29:15,389 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2018-10-01 00:29:15,389 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:15,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:15,637 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:15,662 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:15,662 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 133 [2018-10-01 00:29:15,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-10-01 00:29:15,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-10-01 00:29:15,664 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:15,664 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 134 states. [2018-10-01 00:29:16,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:16,632 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2018-10-01 00:29:16,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-10-01 00:29:16,633 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 134 [2018-10-01 00:29:16,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:16,633 INFO L225 Difference]: With dead ends: 138 [2018-10-01 00:29:16,633 INFO L226 Difference]: Without dead ends: 136 [2018-10-01 00:29:16,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:29:16,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-10-01 00:29:16,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-10-01 00:29:16,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-10-01 00:29:16,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-10-01 00:29:16,636 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 134 [2018-10-01 00:29:16,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:16,636 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-10-01 00:29:16,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-10-01 00:29:16,636 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-10-01 00:29:16,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-01 00:29:16,636 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:16,636 INFO L375 BasicCegarLoop]: trace histogram [132, 1, 1, 1] [2018-10-01 00:29:16,637 INFO L423 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:16,637 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:16,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1464045823, now seen corresponding path program 132 times [2018-10-01 00:29:16,637 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:16,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:16,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:16,637 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:16,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:17,469 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 0 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:17,469 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:17,469 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:17,476 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:29:17,785 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-01 00:29:17,785 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:17,792 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:18,034 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 0 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:18,055 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:18,055 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 134] total 134 [2018-10-01 00:29:18,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-10-01 00:29:18,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-10-01 00:29:18,057 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:18,057 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 135 states. [2018-10-01 00:29:18,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:18,797 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-10-01 00:29:18,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-10-01 00:29:18,797 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 135 [2018-10-01 00:29:18,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:18,798 INFO L225 Difference]: With dead ends: 139 [2018-10-01 00:29:18,798 INFO L226 Difference]: Without dead ends: 137 [2018-10-01 00:29:18,798 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:29:18,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-01 00:29:18,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-10-01 00:29:18,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-01 00:29:18,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-10-01 00:29:18,800 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 135 [2018-10-01 00:29:18,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:18,801 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-10-01 00:29:18,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-10-01 00:29:18,801 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-10-01 00:29:18,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-01 00:29:18,801 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:18,801 INFO L375 BasicCegarLoop]: trace histogram [133, 1, 1, 1] [2018-10-01 00:29:18,801 INFO L423 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:18,801 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:18,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1859217768, now seen corresponding path program 133 times [2018-10-01 00:29:18,802 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:18,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:18,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:18,802 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:18,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:19,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:19,916 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:19,916 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:19,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:29:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:20,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:20,389 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:20,410 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:20,410 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 135] total 135 [2018-10-01 00:29:20,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-10-01 00:29:20,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-10-01 00:29:20,412 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:20,412 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 136 states. [2018-10-01 00:29:21,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:21,605 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2018-10-01 00:29:21,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-10-01 00:29:21,605 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 136 [2018-10-01 00:29:21,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:21,606 INFO L225 Difference]: With dead ends: 140 [2018-10-01 00:29:21,606 INFO L226 Difference]: Without dead ends: 138 [2018-10-01 00:29:21,606 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:29:21,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-10-01 00:29:21,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-10-01 00:29:21,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-10-01 00:29:21,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-10-01 00:29:21,608 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 136 [2018-10-01 00:29:21,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:21,608 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-10-01 00:29:21,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-10-01 00:29:21,608 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-10-01 00:29:21,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-01 00:29:21,609 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:21,609 INFO L375 BasicCegarLoop]: trace histogram [134, 1, 1, 1] [2018-10-01 00:29:21,609 INFO L423 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:21,609 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:21,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1801173985, now seen corresponding path program 134 times [2018-10-01 00:29:21,609 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:21,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:21,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:21,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:29:21,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:22,452 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:22,452 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:22,459 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:29:22,653 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:29:22,653 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:22,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:22,905 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:22,926 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:22,926 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 136] total 136 [2018-10-01 00:29:22,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-10-01 00:29:22,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-10-01 00:29:22,929 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:22,929 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 137 states. [2018-10-01 00:29:24,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:24,224 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-01 00:29:24,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-10-01 00:29:24,224 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 137 [2018-10-01 00:29:24,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:24,225 INFO L225 Difference]: With dead ends: 141 [2018-10-01 00:29:24,225 INFO L226 Difference]: Without dead ends: 139 [2018-10-01 00:29:24,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:29:24,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-01 00:29:24,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-01 00:29:24,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-01 00:29:24,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-10-01 00:29:24,227 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 137 [2018-10-01 00:29:24,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:24,228 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-10-01 00:29:24,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-10-01 00:29:24,228 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-10-01 00:29:24,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-01 00:29:24,228 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:24,228 INFO L375 BasicCegarLoop]: trace histogram [135, 1, 1, 1] [2018-10-01 00:29:24,229 INFO L423 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:24,229 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:24,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1816712, now seen corresponding path program 135 times [2018-10-01 00:29:24,229 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:24,229 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:24,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:24,230 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:24,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:25,217 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:25,218 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:25,218 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:25,225 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:29:25,560 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2018-10-01 00:29:25,561 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:25,566 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:25,844 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:25,844 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137, 137] total 137 [2018-10-01 00:29:25,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-10-01 00:29:25,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-10-01 00:29:25,846 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:25,846 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 138 states. [2018-10-01 00:29:26,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:26,634 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2018-10-01 00:29:26,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-10-01 00:29:26,634 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 138 [2018-10-01 00:29:26,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:26,635 INFO L225 Difference]: With dead ends: 142 [2018-10-01 00:29:26,635 INFO L226 Difference]: Without dead ends: 140 [2018-10-01 00:29:26,635 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:29:26,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-10-01 00:29:26,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-10-01 00:29:26,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-10-01 00:29:26,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-10-01 00:29:26,638 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 138 [2018-10-01 00:29:26,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:26,638 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-10-01 00:29:26,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-10-01 00:29:26,638 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-10-01 00:29:26,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-01 00:29:26,639 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:26,639 INFO L375 BasicCegarLoop]: trace histogram [136, 1, 1, 1] [2018-10-01 00:29:26,639 INFO L423 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:26,639 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:26,639 INFO L82 PathProgramCache]: Analyzing trace with hash 56316097, now seen corresponding path program 136 times [2018-10-01 00:29:26,639 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:26,640 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:26,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:26,640 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:26,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:27,546 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:27,547 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:27,547 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:27,553 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:29:27,751 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:29:27,752 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:27,759 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:28,004 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:28,025 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:28,025 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 138] total 138 [2018-10-01 00:29:28,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-10-01 00:29:28,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-10-01 00:29:28,027 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:28,027 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 139 states. [2018-10-01 00:29:29,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:29,406 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-01 00:29:29,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-10-01 00:29:29,406 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 139 [2018-10-01 00:29:29,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:29,407 INFO L225 Difference]: With dead ends: 143 [2018-10-01 00:29:29,407 INFO L226 Difference]: Without dead ends: 141 [2018-10-01 00:29:29,407 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:29:29,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-01 00:29:29,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-01 00:29:29,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-01 00:29:29,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-10-01 00:29:29,409 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 139 [2018-10-01 00:29:29,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:29,410 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-10-01 00:29:29,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-10-01 00:29:29,410 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-10-01 00:29:29,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-01 00:29:29,410 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:29,410 INFO L375 BasicCegarLoop]: trace histogram [137, 1, 1, 1] [2018-10-01 00:29:29,410 INFO L423 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:29,410 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:29,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1745797032, now seen corresponding path program 137 times [2018-10-01 00:29:29,411 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:29,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:29,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:29,411 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:29,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:30,330 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:30,330 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:30,337 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:29:30,677 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 70 check-sat command(s) [2018-10-01 00:29:30,677 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:30,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:30,937 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:30,959 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:30,959 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139] total 139 [2018-10-01 00:29:30,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-10-01 00:29:30,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-10-01 00:29:30,961 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:30,961 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 140 states. [2018-10-01 00:29:31,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:31,957 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-10-01 00:29:31,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-10-01 00:29:31,957 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 140 [2018-10-01 00:29:31,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:31,958 INFO L225 Difference]: With dead ends: 144 [2018-10-01 00:29:31,958 INFO L226 Difference]: Without dead ends: 142 [2018-10-01 00:29:31,958 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:29:31,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-10-01 00:29:31,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-10-01 00:29:31,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-10-01 00:29:31,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-10-01 00:29:31,960 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 140 [2018-10-01 00:29:31,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:31,960 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-10-01 00:29:31,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-10-01 00:29:31,960 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-10-01 00:29:31,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-01 00:29:31,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:31,961 INFO L375 BasicCegarLoop]: trace histogram [138, 1, 1, 1] [2018-10-01 00:29:31,961 INFO L423 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:31,961 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:31,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1714868831, now seen corresponding path program 138 times [2018-10-01 00:29:31,961 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:31,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:31,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:31,962 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:31,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:32,836 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:32,837 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:32,837 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:32,843 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:29:33,171 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 70 check-sat command(s) [2018-10-01 00:29:33,171 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:33,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:33,433 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:33,454 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:33,454 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 140] total 140 [2018-10-01 00:29:33,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-10-01 00:29:33,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-10-01 00:29:33,456 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:33,456 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 141 states. [2018-10-01 00:29:34,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:34,894 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-01 00:29:34,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-10-01 00:29:34,895 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 141 [2018-10-01 00:29:34,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:34,895 INFO L225 Difference]: With dead ends: 145 [2018-10-01 00:29:34,895 INFO L226 Difference]: Without dead ends: 143 [2018-10-01 00:29:34,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:29:34,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-01 00:29:34,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-01 00:29:34,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-01 00:29:34,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-10-01 00:29:34,898 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 141 [2018-10-01 00:29:34,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:34,898 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-10-01 00:29:34,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-10-01 00:29:34,899 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-10-01 00:29:34,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-01 00:29:34,899 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:34,899 INFO L375 BasicCegarLoop]: trace histogram [139, 1, 1, 1] [2018-10-01 00:29:34,899 INFO L423 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:34,899 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:34,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1621328184, now seen corresponding path program 139 times [2018-10-01 00:29:34,900 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:34,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:34,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:34,900 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:34,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:35,834 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:35,834 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:35,834 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:35,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:29:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:36,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:36,302 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:36,324 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:36,324 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141, 141] total 141 [2018-10-01 00:29:36,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-10-01 00:29:36,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-10-01 00:29:36,326 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:36,326 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 142 states. [2018-10-01 00:29:37,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:37,382 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-10-01 00:29:37,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-10-01 00:29:37,383 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 142 [2018-10-01 00:29:37,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:37,383 INFO L225 Difference]: With dead ends: 146 [2018-10-01 00:29:37,383 INFO L226 Difference]: Without dead ends: 144 [2018-10-01 00:29:37,383 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:29:37,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-10-01 00:29:37,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-10-01 00:29:37,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-10-01 00:29:37,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-10-01 00:29:37,386 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 142 [2018-10-01 00:29:37,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:37,386 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-10-01 00:29:37,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-10-01 00:29:37,386 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-10-01 00:29:37,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-01 00:29:37,386 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:37,386 INFO L375 BasicCegarLoop]: trace histogram [140, 1, 1, 1] [2018-10-01 00:29:37,386 INFO L423 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:37,387 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:37,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1278431873, now seen corresponding path program 140 times [2018-10-01 00:29:37,387 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:37,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:37,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:37,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:29:37,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:38,269 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 9870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:38,269 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:38,269 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:38,276 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:29:38,482 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:29:38,482 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:38,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:38,748 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 9870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:38,769 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:38,769 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142, 142] total 142 [2018-10-01 00:29:38,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-10-01 00:29:38,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-10-01 00:29:38,771 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:38,771 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 143 states. [2018-10-01 00:29:40,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:40,112 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-10-01 00:29:40,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-10-01 00:29:40,113 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 143 [2018-10-01 00:29:40,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:40,113 INFO L225 Difference]: With dead ends: 147 [2018-10-01 00:29:40,113 INFO L226 Difference]: Without dead ends: 145 [2018-10-01 00:29:40,113 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:29:40,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-01 00:29:40,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-10-01 00:29:40,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-01 00:29:40,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-01 00:29:40,116 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 143 [2018-10-01 00:29:40,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:40,116 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-01 00:29:40,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-10-01 00:29:40,116 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-01 00:29:40,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-01 00:29:40,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:40,116 INFO L375 BasicCegarLoop]: trace histogram [141, 1, 1, 1] [2018-10-01 00:29:40,117 INFO L423 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:40,117 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:40,117 INFO L82 PathProgramCache]: Analyzing trace with hash 976680424, now seen corresponding path program 141 times [2018-10-01 00:29:40,117 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:40,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:40,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:40,117 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:40,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:41,028 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:41,028 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:41,028 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:41,036 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:29:41,393 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 72 check-sat command(s) [2018-10-01 00:29:41,394 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:41,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:41,659 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:41,681 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:41,681 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143, 143] total 143 [2018-10-01 00:29:41,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-10-01 00:29:41,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-10-01 00:29:41,683 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:41,683 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 144 states. [2018-10-01 00:29:42,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:42,538 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-10-01 00:29:42,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-10-01 00:29:42,538 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 144 [2018-10-01 00:29:42,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:42,538 INFO L225 Difference]: With dead ends: 148 [2018-10-01 00:29:42,538 INFO L226 Difference]: Without dead ends: 146 [2018-10-01 00:29:42,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:29:42,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-10-01 00:29:42,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-10-01 00:29:42,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-10-01 00:29:42,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-10-01 00:29:42,541 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 144 [2018-10-01 00:29:42,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:42,541 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-10-01 00:29:42,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-10-01 00:29:42,541 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-10-01 00:29:42,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-01 00:29:42,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:42,542 INFO L375 BasicCegarLoop]: trace histogram [142, 1, 1, 1] [2018-10-01 00:29:42,542 INFO L423 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:42,542 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:42,542 INFO L82 PathProgramCache]: Analyzing trace with hash 212320097, now seen corresponding path program 142 times [2018-10-01 00:29:42,542 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:42,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:42,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:42,543 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:42,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:43,467 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 0 proven. 10153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:43,467 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:43,467 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:43,509 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:29:43,716 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:29:43,716 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:43,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:43,990 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 0 proven. 10153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:44,011 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:44,011 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144, 144] total 144 [2018-10-01 00:29:44,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-10-01 00:29:44,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-10-01 00:29:44,013 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:44,013 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 145 states. [2018-10-01 00:29:45,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:45,272 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-10-01 00:29:45,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-10-01 00:29:45,273 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 145 [2018-10-01 00:29:45,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:45,273 INFO L225 Difference]: With dead ends: 149 [2018-10-01 00:29:45,273 INFO L226 Difference]: Without dead ends: 147 [2018-10-01 00:29:45,274 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:29:45,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-01 00:29:45,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-01 00:29:45,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-01 00:29:45,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-10-01 00:29:45,276 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 145 [2018-10-01 00:29:45,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:45,276 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-10-01 00:29:45,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-10-01 00:29:45,276 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-10-01 00:29:45,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-01 00:29:45,277 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:45,277 INFO L375 BasicCegarLoop]: trace histogram [143, 1, 1, 1] [2018-10-01 00:29:45,277 INFO L423 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:45,277 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:45,277 INFO L82 PathProgramCache]: Analyzing trace with hash -2008013560, now seen corresponding path program 143 times [2018-10-01 00:29:45,277 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:45,278 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:45,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:45,278 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:45,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:46,204 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:46,204 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:46,204 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:46,211 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:29:46,570 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2018-10-01 00:29:46,570 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:46,578 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:46,846 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:46,867 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:46,867 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145, 145] total 145 [2018-10-01 00:29:46,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-10-01 00:29:46,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-10-01 00:29:46,869 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:46,869 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 146 states. [2018-10-01 00:29:48,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:48,359 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2018-10-01 00:29:48,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-10-01 00:29:48,359 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 146 [2018-10-01 00:29:48,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:48,360 INFO L225 Difference]: With dead ends: 150 [2018-10-01 00:29:48,360 INFO L226 Difference]: Without dead ends: 148 [2018-10-01 00:29:48,360 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:29:48,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-10-01 00:29:48,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-10-01 00:29:48,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-10-01 00:29:48,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-10-01 00:29:48,363 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 146 [2018-10-01 00:29:48,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:48,363 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-10-01 00:29:48,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-10-01 00:29:48,363 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-10-01 00:29:48,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-01 00:29:48,395 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:48,395 INFO L375 BasicCegarLoop]: trace histogram [144, 1, 1, 1] [2018-10-01 00:29:48,396 INFO L423 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:48,396 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:48,396 INFO L82 PathProgramCache]: Analyzing trace with hash -2118880191, now seen corresponding path program 144 times [2018-10-01 00:29:48,396 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:48,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:48,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:48,397 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:48,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:49,333 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 0 proven. 10440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:49,333 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:49,334 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:49,341 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:29:49,696 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-01 00:29:49,696 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:49,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 0 proven. 10440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:50,225 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:50,225 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146, 146] total 146 [2018-10-01 00:29:50,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-10-01 00:29:50,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-10-01 00:29:50,228 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:50,228 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 147 states. [2018-10-01 00:29:51,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:51,131 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-10-01 00:29:51,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-10-01 00:29:51,131 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 147 [2018-10-01 00:29:51,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:51,131 INFO L225 Difference]: With dead ends: 151 [2018-10-01 00:29:51,131 INFO L226 Difference]: Without dead ends: 149 [2018-10-01 00:29:51,132 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:29:51,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-01 00:29:51,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-10-01 00:29:51,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-01 00:29:51,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-10-01 00:29:51,134 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 147 [2018-10-01 00:29:51,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:51,134 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-10-01 00:29:51,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-10-01 00:29:51,134 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-10-01 00:29:51,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-01 00:29:51,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:51,135 INFO L375 BasicCegarLoop]: trace histogram [145, 1, 1, 1] [2018-10-01 00:29:51,135 INFO L423 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:51,135 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:51,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1260778456, now seen corresponding path program 145 times [2018-10-01 00:29:51,135 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:51,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:51,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:51,136 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:51,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:52,077 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:52,077 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:52,077 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:52,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:29:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:52,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:52,635 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:52,656 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:52,656 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147, 147] total 147 [2018-10-01 00:29:52,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-10-01 00:29:52,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-10-01 00:29:52,658 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:52,658 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 148 states. [2018-10-01 00:29:54,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:54,157 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2018-10-01 00:29:54,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-10-01 00:29:54,158 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 148 [2018-10-01 00:29:54,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:54,158 INFO L225 Difference]: With dead ends: 152 [2018-10-01 00:29:54,158 INFO L226 Difference]: Without dead ends: 150 [2018-10-01 00:29:54,158 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:29:54,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-10-01 00:29:54,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-10-01 00:29:54,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-10-01 00:29:54,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-10-01 00:29:54,161 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 148 [2018-10-01 00:29:54,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:54,161 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-10-01 00:29:54,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-10-01 00:29:54,161 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-10-01 00:29:54,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-01 00:29:54,161 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:54,161 INFO L375 BasicCegarLoop]: trace histogram [146, 1, 1, 1] [2018-10-01 00:29:54,162 INFO L423 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:54,162 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:54,162 INFO L82 PathProgramCache]: Analyzing trace with hash -429428447, now seen corresponding path program 146 times [2018-10-01 00:29:54,162 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:54,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:54,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:54,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:29:54,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:55,328 INFO L134 CoverageAnalysis]: Checked inductivity of 10731 backedges. 0 proven. 10731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:55,328 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:55,328 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:55,335 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:29:55,547 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:29:55,547 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:55,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:55,827 INFO L134 CoverageAnalysis]: Checked inductivity of 10731 backedges. 0 proven. 10731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:55,848 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:55,849 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148, 148] total 148 [2018-10-01 00:29:55,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-10-01 00:29:55,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-10-01 00:29:55,851 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:55,851 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 149 states. [2018-10-01 00:29:57,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:57,457 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-01 00:29:57,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-10-01 00:29:57,457 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 149 [2018-10-01 00:29:57,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:57,458 INFO L225 Difference]: With dead ends: 153 [2018-10-01 00:29:57,458 INFO L226 Difference]: Without dead ends: 151 [2018-10-01 00:29:57,458 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:29:57,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-01 00:29:57,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-01 00:29:57,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-01 00:29:57,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-10-01 00:29:57,460 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 149 [2018-10-01 00:29:57,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:57,460 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-10-01 00:29:57,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-10-01 00:29:57,461 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-10-01 00:29:57,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-01 00:29:57,461 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:57,461 INFO L375 BasicCegarLoop]: trace histogram [147, 1, 1, 1] [2018-10-01 00:29:57,461 INFO L423 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:57,461 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:57,461 INFO L82 PathProgramCache]: Analyzing trace with hash -427381944, now seen corresponding path program 147 times [2018-10-01 00:29:57,461 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:57,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:57,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:57,462 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:57,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:58,479 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:58,479 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:58,479 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:58,487 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:29:58,889 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 75 check-sat command(s) [2018-10-01 00:29:58,889 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:58,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:59,187 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:59,209 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:59,209 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149, 149] total 149 [2018-10-01 00:29:59,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-10-01 00:29:59,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-10-01 00:29:59,211 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:59,211 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 150 states. [2018-10-01 00:30:00,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:00,879 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-10-01 00:30:00,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-10-01 00:30:00,879 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 150 [2018-10-01 00:30:00,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:00,880 INFO L225 Difference]: With dead ends: 154 [2018-10-01 00:30:00,880 INFO L226 Difference]: Without dead ends: 152 [2018-10-01 00:30:00,880 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:30:00,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-10-01 00:30:00,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-10-01 00:30:00,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-10-01 00:30:00,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-10-01 00:30:00,883 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 150 [2018-10-01 00:30:00,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:00,883 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-10-01 00:30:00,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-10-01 00:30:00,884 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-10-01 00:30:00,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-01 00:30:00,884 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:00,884 INFO L375 BasicCegarLoop]: trace histogram [148, 1, 1, 1] [2018-10-01 00:30:00,884 INFO L423 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:00,885 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:00,885 INFO L82 PathProgramCache]: Analyzing trace with hash -363940351, now seen corresponding path program 148 times [2018-10-01 00:30:00,885 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:00,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:00,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:00,886 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:00,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:01,867 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 0 proven. 11026 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:01,867 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:01,867 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:01,875 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:30:02,090 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:30:02,090 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:02,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:02,371 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 0 proven. 11026 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:02,393 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:02,393 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150, 150] total 150 [2018-10-01 00:30:02,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-10-01 00:30:02,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-10-01 00:30:02,395 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:02,395 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 151 states. [2018-10-01 00:30:03,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:03,731 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-10-01 00:30:03,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-10-01 00:30:03,731 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 151 [2018-10-01 00:30:03,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:03,732 INFO L225 Difference]: With dead ends: 155 [2018-10-01 00:30:03,732 INFO L226 Difference]: Without dead ends: 153 [2018-10-01 00:30:03,732 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:30:03,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-01 00:30:03,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-10-01 00:30:03,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-01 00:30:03,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-10-01 00:30:03,734 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 151 [2018-10-01 00:30:03,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:03,734 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-10-01 00:30:03,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-10-01 00:30:03,735 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-10-01 00:30:03,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-01 00:30:03,735 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:03,735 INFO L375 BasicCegarLoop]: trace histogram [149, 1, 1, 1] [2018-10-01 00:30:03,735 INFO L423 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:03,735 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:03,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1602749032, now seen corresponding path program 149 times [2018-10-01 00:30:03,736 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:03,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:03,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:03,736 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:03,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:04,711 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:04,711 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:04,711 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:04,718 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:30:05,106 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) [2018-10-01 00:30:05,107 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:05,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:05,565 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:05,587 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:05,587 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151, 151] total 151 [2018-10-01 00:30:05,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-10-01 00:30:05,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-10-01 00:30:05,589 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:05,589 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 152 states. [2018-10-01 00:30:06,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:06,649 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-10-01 00:30:06,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-10-01 00:30:06,649 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 152 [2018-10-01 00:30:06,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:06,650 INFO L225 Difference]: With dead ends: 156 [2018-10-01 00:30:06,650 INFO L226 Difference]: Without dead ends: 154 [2018-10-01 00:30:06,650 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:30:06,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-10-01 00:30:06,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-10-01 00:30:06,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-10-01 00:30:06,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-10-01 00:30:06,652 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 152 [2018-10-01 00:30:06,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:06,653 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-10-01 00:30:06,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-10-01 00:30:06,653 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-10-01 00:30:06,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-01 00:30:06,653 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:06,653 INFO L375 BasicCegarLoop]: trace histogram [150, 1, 1, 1] [2018-10-01 00:30:06,653 INFO L423 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:06,654 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:06,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1854389535, now seen corresponding path program 150 times [2018-10-01 00:30:06,654 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:06,654 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:06,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:06,654 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:06,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:07,702 INFO L134 CoverageAnalysis]: Checked inductivity of 11325 backedges. 0 proven. 11325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:07,702 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:07,702 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:07,709 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:30:08,081 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 76 check-sat command(s) [2018-10-01 00:30:08,081 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:08,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:08,367 INFO L134 CoverageAnalysis]: Checked inductivity of 11325 backedges. 0 proven. 11325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:08,388 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:08,388 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152, 152] total 152 [2018-10-01 00:30:08,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-10-01 00:30:08,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-10-01 00:30:08,390 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:08,390 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 153 states. [2018-10-01 00:30:09,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:09,322 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-01 00:30:09,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-10-01 00:30:09,322 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 153 [2018-10-01 00:30:09,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:09,323 INFO L225 Difference]: With dead ends: 157 [2018-10-01 00:30:09,323 INFO L226 Difference]: Without dead ends: 155 [2018-10-01 00:30:09,323 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:30:09,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-01 00:30:09,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-01 00:30:09,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-01 00:30:09,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-10-01 00:30:09,325 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 153 [2018-10-01 00:30:09,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:09,325 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-10-01 00:30:09,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-10-01 00:30:09,326 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-10-01 00:30:09,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-01 00:30:09,326 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:09,326 INFO L375 BasicCegarLoop]: trace histogram [151, 1, 1, 1] [2018-10-01 00:30:09,326 INFO L423 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:09,326 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:09,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1651502712, now seen corresponding path program 151 times [2018-10-01 00:30:09,326 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:09,327 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:09,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:09,327 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:09,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:10,491 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:10,491 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:10,491 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:10,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:30:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:10,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:11,002 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:11,022 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:11,023 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153, 153] total 153 [2018-10-01 00:30:11,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-10-01 00:30:11,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-10-01 00:30:11,025 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:11,025 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 154 states. [2018-10-01 00:30:12,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:12,038 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2018-10-01 00:30:12,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-10-01 00:30:12,038 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 154 [2018-10-01 00:30:12,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:12,039 INFO L225 Difference]: With dead ends: 158 [2018-10-01 00:30:12,039 INFO L226 Difference]: Without dead ends: 156 [2018-10-01 00:30:12,039 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:30:12,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-01 00:30:12,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-10-01 00:30:12,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-10-01 00:30:12,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-10-01 00:30:12,041 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 154 [2018-10-01 00:30:12,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:12,041 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-10-01 00:30:12,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-10-01 00:30:12,042 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-10-01 00:30:12,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-01 00:30:12,042 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:12,042 INFO L375 BasicCegarLoop]: trace histogram [152, 1, 1, 1] [2018-10-01 00:30:12,042 INFO L423 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:12,042 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:12,042 INFO L82 PathProgramCache]: Analyzing trace with hash 343021505, now seen corresponding path program 152 times [2018-10-01 00:30:12,042 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:12,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:12,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:12,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:30:12,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:13,058 INFO L134 CoverageAnalysis]: Checked inductivity of 11628 backedges. 0 proven. 11628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:13,058 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:13,058 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:13,065 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:30:13,287 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:30:13,287 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:13,294 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:13,574 INFO L134 CoverageAnalysis]: Checked inductivity of 11628 backedges. 0 proven. 11628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:13,595 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:13,595 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154, 154] total 154 [2018-10-01 00:30:13,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-10-01 00:30:13,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-10-01 00:30:13,598 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:13,598 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 155 states. [2018-10-01 00:30:14,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:14,626 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-01 00:30:14,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-10-01 00:30:14,626 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 155 [2018-10-01 00:30:14,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:14,627 INFO L225 Difference]: With dead ends: 159 [2018-10-01 00:30:14,627 INFO L226 Difference]: Without dead ends: 157 [2018-10-01 00:30:14,627 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:30:14,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-01 00:30:14,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-10-01 00:30:14,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-01 00:30:14,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-10-01 00:30:14,630 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 155 [2018-10-01 00:30:14,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:14,631 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-10-01 00:30:14,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-10-01 00:30:14,631 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-10-01 00:30:14,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-01 00:30:14,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:14,632 INFO L375 BasicCegarLoop]: trace histogram [153, 1, 1, 1] [2018-10-01 00:30:14,632 INFO L423 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:14,632 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:14,632 INFO L82 PathProgramCache]: Analyzing trace with hash 2043730088, now seen corresponding path program 153 times [2018-10-01 00:30:14,632 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:14,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:14,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:14,633 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:14,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:15,884 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:15,885 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:15,885 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:15,892 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:30:16,292 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 78 check-sat command(s) [2018-10-01 00:30:16,292 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:16,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:16,642 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:16,663 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:16,664 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155, 155] total 155 [2018-10-01 00:30:16,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-10-01 00:30:16,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-10-01 00:30:16,666 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:16,666 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 156 states. [2018-10-01 00:30:17,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:17,744 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2018-10-01 00:30:17,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-10-01 00:30:17,744 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 156 [2018-10-01 00:30:17,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:17,744 INFO L225 Difference]: With dead ends: 160 [2018-10-01 00:30:17,745 INFO L226 Difference]: Without dead ends: 158 [2018-10-01 00:30:17,745 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:30:17,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-10-01 00:30:17,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-10-01 00:30:17,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-10-01 00:30:17,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-10-01 00:30:17,747 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 156 [2018-10-01 00:30:17,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:17,747 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-10-01 00:30:17,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-10-01 00:30:17,747 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-10-01 00:30:17,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-01 00:30:17,748 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:17,748 INFO L375 BasicCegarLoop]: trace histogram [154, 1, 1, 1] [2018-10-01 00:30:17,748 INFO L423 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:17,748 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:17,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1068878687, now seen corresponding path program 154 times [2018-10-01 00:30:17,748 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:17,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:17,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:17,749 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:17,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:18,774 INFO L134 CoverageAnalysis]: Checked inductivity of 11935 backedges. 0 proven. 11935 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:18,775 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:18,775 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:18,783 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:30:19,007 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:30:19,007 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:19,015 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 11935 backedges. 0 proven. 11935 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:19,323 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:19,324 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156, 156] total 156 [2018-10-01 00:30:19,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-10-01 00:30:19,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-10-01 00:30:19,326 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:19,326 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 157 states. [2018-10-01 00:30:20,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:20,916 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-10-01 00:30:20,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-10-01 00:30:20,916 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 157 [2018-10-01 00:30:20,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:20,917 INFO L225 Difference]: With dead ends: 161 [2018-10-01 00:30:20,917 INFO L226 Difference]: Without dead ends: 159 [2018-10-01 00:30:20,917 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:30:20,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-01 00:30:20,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-01 00:30:20,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-01 00:30:20,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-01 00:30:20,919 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 157 [2018-10-01 00:30:20,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:20,920 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-01 00:30:20,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-10-01 00:30:20,920 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-01 00:30:20,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-01 00:30:20,920 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:20,920 INFO L375 BasicCegarLoop]: trace histogram [155, 1, 1, 1] [2018-10-01 00:30:20,920 INFO L423 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:20,920 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:20,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1224497096, now seen corresponding path program 155 times [2018-10-01 00:30:20,921 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:20,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:20,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:20,921 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:20,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:22,002 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:22,002 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:22,003 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:22,012 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:30:22,422 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 79 check-sat command(s) [2018-10-01 00:30:22,422 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:22,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:22,714 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:22,735 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:22,735 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157, 157] total 157 [2018-10-01 00:30:22,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-10-01 00:30:22,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-10-01 00:30:22,738 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:22,738 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 158 states. [2018-10-01 00:30:24,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:24,743 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2018-10-01 00:30:24,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-10-01 00:30:24,744 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 158 [2018-10-01 00:30:24,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:24,744 INFO L225 Difference]: With dead ends: 162 [2018-10-01 00:30:24,744 INFO L226 Difference]: Without dead ends: 160 [2018-10-01 00:30:24,744 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:30:24,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-10-01 00:30:24,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-10-01 00:30:24,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-10-01 00:30:24,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-10-01 00:30:24,747 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 158 [2018-10-01 00:30:24,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:24,747 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-10-01 00:30:24,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-10-01 00:30:24,747 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-10-01 00:30:24,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-01 00:30:24,748 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:24,748 INFO L375 BasicCegarLoop]: trace histogram [156, 1, 1, 1] [2018-10-01 00:30:24,748 INFO L423 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:24,748 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:24,748 INFO L82 PathProgramCache]: Analyzing trace with hash -695297663, now seen corresponding path program 156 times [2018-10-01 00:30:24,748 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:24,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:24,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:24,749 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:24,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:26,018 INFO L134 CoverageAnalysis]: Checked inductivity of 12246 backedges. 0 proven. 12246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:26,018 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:26,018 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:26,026 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:30:26,421 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-01 00:30:26,421 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:26,429 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:26,717 INFO L134 CoverageAnalysis]: Checked inductivity of 12246 backedges. 0 proven. 12246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:26,739 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:26,739 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158, 158] total 158 [2018-10-01 00:30:26,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-10-01 00:30:26,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-10-01 00:30:26,741 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:26,742 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 159 states. [2018-10-01 00:30:28,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:28,389 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-10-01 00:30:28,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-10-01 00:30:28,389 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 159 [2018-10-01 00:30:28,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:28,390 INFO L225 Difference]: With dead ends: 163 [2018-10-01 00:30:28,390 INFO L226 Difference]: Without dead ends: 161 [2018-10-01 00:30:28,390 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:30:28,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-01 00:30:28,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-10-01 00:30:28,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-01 00:30:28,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-10-01 00:30:28,392 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 159 [2018-10-01 00:30:28,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:28,392 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-10-01 00:30:28,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-10-01 00:30:28,393 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-10-01 00:30:28,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-01 00:30:28,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:28,393 INFO L375 BasicCegarLoop]: trace histogram [157, 1, 1, 1] [2018-10-01 00:30:28,393 INFO L423 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:28,393 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:28,393 INFO L82 PathProgramCache]: Analyzing trace with hash -79393048, now seen corresponding path program 157 times [2018-10-01 00:30:28,394 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:28,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:28,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:28,394 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:28,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:29,440 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:29,440 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:29,441 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:29,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:30:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:29,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:29,977 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:29,998 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:29,999 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159, 159] total 159 [2018-10-01 00:30:29,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-10-01 00:30:30,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-10-01 00:30:30,001 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:30,001 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 160 states. [2018-10-01 00:30:31,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:31,716 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2018-10-01 00:30:31,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-10-01 00:30:31,716 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 160 [2018-10-01 00:30:31,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:31,717 INFO L225 Difference]: With dead ends: 164 [2018-10-01 00:30:31,717 INFO L226 Difference]: Without dead ends: 162 [2018-10-01 00:30:31,717 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:30:31,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-10-01 00:30:31,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-10-01 00:30:31,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-10-01 00:30:31,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-10-01 00:30:31,720 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 160 [2018-10-01 00:30:31,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:31,720 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-10-01 00:30:31,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-10-01 00:30:31,720 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-10-01 00:30:31,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-01 00:30:31,720 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:31,720 INFO L375 BasicCegarLoop]: trace histogram [158, 1, 1, 1] [2018-10-01 00:30:31,721 INFO L423 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:31,721 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:31,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1833780833, now seen corresponding path program 158 times [2018-10-01 00:30:31,721 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:31,721 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:31,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:31,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:30:31,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 0 proven. 12561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:32,843 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:32,844 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:32,852 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:30:33,082 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:30:33,083 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:33,091 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:33,382 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 0 proven. 12561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:33,403 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:33,403 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160, 160] total 160 [2018-10-01 00:30:33,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-10-01 00:30:33,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-10-01 00:30:33,405 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:33,405 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 161 states. [2018-10-01 00:30:34,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:34,416 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-10-01 00:30:34,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-10-01 00:30:34,416 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 161 [2018-10-01 00:30:34,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:34,417 INFO L225 Difference]: With dead ends: 165 [2018-10-01 00:30:34,417 INFO L226 Difference]: Without dead ends: 163 [2018-10-01 00:30:34,417 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:30:34,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-01 00:30:34,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-01 00:30:34,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-01 00:30:34,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-10-01 00:30:34,419 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 161 [2018-10-01 00:30:34,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:34,419 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-10-01 00:30:34,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-10-01 00:30:34,420 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-10-01 00:30:34,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-01 00:30:34,420 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:34,420 INFO L375 BasicCegarLoop]: trace histogram [159, 1, 1, 1] [2018-10-01 00:30:34,420 INFO L423 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:34,420 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:34,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1012629000, now seen corresponding path program 159 times [2018-10-01 00:30:34,421 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:34,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:34,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:34,421 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:34,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:35,507 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:35,507 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:35,514 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:30:35,989 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 81 check-sat command(s) [2018-10-01 00:30:35,989 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:35,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:36,370 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:36,392 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:36,393 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161, 161] total 161 [2018-10-01 00:30:36,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-10-01 00:30:36,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-10-01 00:30:36,395 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:36,395 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 162 states. [2018-10-01 00:30:38,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:38,511 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2018-10-01 00:30:38,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-10-01 00:30:38,511 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 162 [2018-10-01 00:30:38,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:38,512 INFO L225 Difference]: With dead ends: 166 [2018-10-01 00:30:38,512 INFO L226 Difference]: Without dead ends: 164 [2018-10-01 00:30:38,512 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:30:38,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-10-01 00:30:38,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-10-01 00:30:38,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-10-01 00:30:38,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2018-10-01 00:30:38,514 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 162 [2018-10-01 00:30:38,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:38,514 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2018-10-01 00:30:38,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-10-01 00:30:38,515 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2018-10-01 00:30:38,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-01 00:30:38,515 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:38,515 INFO L375 BasicCegarLoop]: trace histogram [160, 1, 1, 1] [2018-10-01 00:30:38,515 INFO L423 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:38,515 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:38,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1326725953, now seen corresponding path program 160 times [2018-10-01 00:30:38,516 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:38,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:38,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:38,516 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:38,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 12880 backedges. 0 proven. 12880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:39,615 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:39,615 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:39,623 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:30:39,853 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:30:39,854 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:39,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:40,168 INFO L134 CoverageAnalysis]: Checked inductivity of 12880 backedges. 0 proven. 12880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:40,189 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:40,189 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162, 162] total 162 [2018-10-01 00:30:40,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-10-01 00:30:40,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-10-01 00:30:40,192 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:40,192 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 163 states. [2018-10-01 00:30:42,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:42,178 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-10-01 00:30:42,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-10-01 00:30:42,178 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 163 [2018-10-01 00:30:42,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:42,179 INFO L225 Difference]: With dead ends: 167 [2018-10-01 00:30:42,179 INFO L226 Difference]: Without dead ends: 165 [2018-10-01 00:30:42,179 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:30:42,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-01 00:30:42,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-10-01 00:30:42,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-01 00:30:42,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-10-01 00:30:42,182 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 163 [2018-10-01 00:30:42,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:42,182 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-10-01 00:30:42,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-10-01 00:30:42,182 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-10-01 00:30:42,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-01 00:30:42,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:42,182 INFO L375 BasicCegarLoop]: trace histogram [161, 1, 1, 1] [2018-10-01 00:30:42,183 INFO L423 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:42,183 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:42,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1821170392, now seen corresponding path program 161 times [2018-10-01 00:30:42,183 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:42,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:42,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:42,183 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:42,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:43,285 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:43,286 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:43,286 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:43,294 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:30:43,764 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 82 check-sat command(s) [2018-10-01 00:30:43,765 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:43,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:44,076 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:44,098 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:44,098 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163, 163] total 163 [2018-10-01 00:30:44,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-10-01 00:30:44,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-10-01 00:30:44,100 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:44,100 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 164 states. [2018-10-01 00:30:45,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:45,137 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2018-10-01 00:30:45,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-10-01 00:30:45,137 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 164 [2018-10-01 00:30:45,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:45,138 INFO L225 Difference]: With dead ends: 168 [2018-10-01 00:30:45,138 INFO L226 Difference]: Without dead ends: 166 [2018-10-01 00:30:45,138 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:30:45,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-10-01 00:30:45,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-10-01 00:30:45,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-10-01 00:30:45,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-10-01 00:30:45,141 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 164 [2018-10-01 00:30:45,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:45,142 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-10-01 00:30:45,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-10-01 00:30:45,142 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-10-01 00:30:45,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-01 00:30:45,143 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:45,143 INFO L375 BasicCegarLoop]: trace histogram [162, 1, 1, 1] [2018-10-01 00:30:45,143 INFO L423 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:45,143 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:45,143 INFO L82 PathProgramCache]: Analyzing trace with hash -621709279, now seen corresponding path program 162 times [2018-10-01 00:30:45,143 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:45,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:45,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:45,144 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:45,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:46,550 INFO L134 CoverageAnalysis]: Checked inductivity of 13203 backedges. 0 proven. 13203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:46,550 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:46,550 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:46,557 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:30:46,976 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 82 check-sat command(s) [2018-10-01 00:30:46,977 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:46,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:47,284 INFO L134 CoverageAnalysis]: Checked inductivity of 13203 backedges. 0 proven. 13203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:47,306 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:47,306 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164, 164] total 164 [2018-10-01 00:30:47,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-10-01 00:30:47,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-10-01 00:30:47,309 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:47,309 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 165 states. [2018-10-01 00:30:49,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:49,664 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-01 00:30:49,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-10-01 00:30:49,665 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 165 [2018-10-01 00:30:49,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:49,665 INFO L225 Difference]: With dead ends: 169 [2018-10-01 00:30:49,665 INFO L226 Difference]: Without dead ends: 167 [2018-10-01 00:30:49,665 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:30:49,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-01 00:30:49,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-01 00:30:49,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-01 00:30:49,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-10-01 00:30:49,668 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 165 [2018-10-01 00:30:49,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:49,668 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-10-01 00:30:49,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-10-01 00:30:49,668 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-10-01 00:30:49,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-01 00:30:49,668 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:49,668 INFO L375 BasicCegarLoop]: trace histogram [163, 1, 1, 1] [2018-10-01 00:30:49,669 INFO L423 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:49,669 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:49,669 INFO L82 PathProgramCache]: Analyzing trace with hash -2093120440, now seen corresponding path program 163 times [2018-10-01 00:30:49,669 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:49,669 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:49,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:49,670 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:49,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:50,789 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:50,789 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:50,789 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:50,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:30:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:51,040 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:51,591 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:51,591 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165, 165] total 165 [2018-10-01 00:30:51,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-10-01 00:30:51,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-10-01 00:30:51,594 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:51,595 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 166 states. [2018-10-01 00:30:53,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:53,110 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2018-10-01 00:30:53,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-10-01 00:30:53,110 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 166 [2018-10-01 00:30:53,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:53,111 INFO L225 Difference]: With dead ends: 170 [2018-10-01 00:30:53,111 INFO L226 Difference]: Without dead ends: 168 [2018-10-01 00:30:53,111 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:30:53,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-10-01 00:30:53,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-10-01 00:30:53,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-10-01 00:30:53,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2018-10-01 00:30:53,114 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 166 [2018-10-01 00:30:53,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:53,114 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2018-10-01 00:30:53,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-10-01 00:30:53,114 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2018-10-01 00:30:53,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-01 00:30:53,114 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:53,115 INFO L375 BasicCegarLoop]: trace histogram [164, 1, 1, 1] [2018-10-01 00:30:53,115 INFO L423 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:53,115 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:53,115 INFO L82 PathProgramCache]: Analyzing trace with hash -462226175, now seen corresponding path program 164 times [2018-10-01 00:30:53,115 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:53,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:53,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:53,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:30:53,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:54,271 INFO L134 CoverageAnalysis]: Checked inductivity of 13530 backedges. 0 proven. 13530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:54,271 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:54,271 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:54,279 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:30:54,518 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:30:54,518 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:54,527 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:54,830 INFO L134 CoverageAnalysis]: Checked inductivity of 13530 backedges. 0 proven. 13530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:54,851 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:54,851 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166, 166] total 166 [2018-10-01 00:30:54,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-10-01 00:30:54,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-10-01 00:30:54,853 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:54,853 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 167 states. [2018-10-01 00:30:56,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:56,971 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-10-01 00:30:56,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-10-01 00:30:56,971 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 167 [2018-10-01 00:30:56,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:56,972 INFO L225 Difference]: With dead ends: 171 [2018-10-01 00:30:56,972 INFO L226 Difference]: Without dead ends: 169 [2018-10-01 00:30:56,972 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:30:56,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-01 00:30:56,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-10-01 00:30:56,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-01 00:30:56,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-10-01 00:30:56,975 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 167 [2018-10-01 00:30:56,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:56,975 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-10-01 00:30:56,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-10-01 00:30:56,975 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-10-01 00:30:56,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-01 00:30:56,975 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:56,975 INFO L375 BasicCegarLoop]: trace histogram [165, 1, 1, 1] [2018-10-01 00:30:56,976 INFO L423 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:56,976 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:56,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1444111512, now seen corresponding path program 165 times [2018-10-01 00:30:56,976 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:56,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:56,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:56,976 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:56,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:58,124 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:58,125 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:58,125 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:58,132 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:30:58,591 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 84 check-sat command(s) [2018-10-01 00:30:58,591 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:58,599 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:58,907 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:58,928 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:58,928 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167, 167] total 167 [2018-10-01 00:30:58,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-10-01 00:30:58,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-10-01 00:30:58,931 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:58,931 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 168 states. [2018-10-01 00:31:00,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:00,208 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2018-10-01 00:31:00,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-10-01 00:31:00,208 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 168 [2018-10-01 00:31:00,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:00,208 INFO L225 Difference]: With dead ends: 172 [2018-10-01 00:31:00,209 INFO L226 Difference]: Without dead ends: 170 [2018-10-01 00:31:00,209 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:31:00,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-10-01 00:31:00,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-10-01 00:31:00,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-10-01 00:31:00,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2018-10-01 00:31:00,212 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 168 [2018-10-01 00:31:00,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:00,213 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2018-10-01 00:31:00,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-10-01 00:31:00,213 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2018-10-01 00:31:00,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-01 00:31:00,213 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:00,213 INFO L375 BasicCegarLoop]: trace histogram [166, 1, 1, 1] [2018-10-01 00:31:00,213 INFO L423 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:00,213 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:00,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1817785887, now seen corresponding path program 166 times [2018-10-01 00:31:00,214 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:00,214 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:00,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:00,214 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:00,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 13861 backedges. 0 proven. 13861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:01,379 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:01,379 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:01,386 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:31:01,632 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:31:01,633 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:01,640 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 13861 backedges. 0 proven. 13861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:02,004 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:02,005 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168, 168] total 168 [2018-10-01 00:31:02,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-10-01 00:31:02,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-10-01 00:31:02,007 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:02,008 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 169 states. [2018-10-01 00:31:04,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:04,462 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-10-01 00:31:04,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-10-01 00:31:04,462 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 169 [2018-10-01 00:31:04,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:04,462 INFO L225 Difference]: With dead ends: 173 [2018-10-01 00:31:04,462 INFO L226 Difference]: Without dead ends: 171 [2018-10-01 00:31:04,463 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:31:04,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-01 00:31:04,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-01 00:31:04,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-01 00:31:04,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-01 00:31:04,465 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 169 [2018-10-01 00:31:04,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:04,465 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-01 00:31:04,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-10-01 00:31:04,465 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-01 00:31:04,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-01 00:31:04,466 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:04,466 INFO L375 BasicCegarLoop]: trace histogram [167, 1, 1, 1] [2018-10-01 00:31:04,466 INFO L423 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:04,466 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:04,466 INFO L82 PathProgramCache]: Analyzing trace with hash -516789624, now seen corresponding path program 167 times [2018-10-01 00:31:04,466 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:04,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:04,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:04,467 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:04,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:05,666 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:05,666 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:05,674 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:31:06,134 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 85 check-sat command(s) [2018-10-01 00:31:06,134 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:06,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:06,476 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:06,477 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169, 169] total 169 [2018-10-01 00:31:06,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-10-01 00:31:06,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-10-01 00:31:06,480 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:06,481 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 170 states. [2018-10-01 00:31:07,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:07,949 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2018-10-01 00:31:07,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-10-01 00:31:07,949 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 170 [2018-10-01 00:31:07,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:07,949 INFO L225 Difference]: With dead ends: 174 [2018-10-01 00:31:07,949 INFO L226 Difference]: Without dead ends: 172 [2018-10-01 00:31:07,950 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:31:07,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-10-01 00:31:07,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-10-01 00:31:07,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-10-01 00:31:07,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-10-01 00:31:07,952 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 170 [2018-10-01 00:31:07,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:07,952 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-10-01 00:31:07,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-10-01 00:31:07,952 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-10-01 00:31:07,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-01 00:31:07,953 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:07,953 INFO L375 BasicCegarLoop]: trace histogram [168, 1, 1, 1] [2018-10-01 00:31:07,953 INFO L423 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:07,953 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:07,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1159388865, now seen corresponding path program 168 times [2018-10-01 00:31:07,953 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:07,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:07,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:07,954 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:07,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:09,158 INFO L134 CoverageAnalysis]: Checked inductivity of 14196 backedges. 0 proven. 14196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:09,158 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:09,158 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:09,165 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:31:09,616 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-10-01 00:31:09,616 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:09,626 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 14196 backedges. 0 proven. 14196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:09,956 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:09,957 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170, 170] total 170 [2018-10-01 00:31:09,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-10-01 00:31:09,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-10-01 00:31:09,959 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:09,959 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 171 states. [2018-10-01 00:31:12,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:12,223 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-10-01 00:31:12,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-10-01 00:31:12,223 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 171 [2018-10-01 00:31:12,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:12,224 INFO L225 Difference]: With dead ends: 175 [2018-10-01 00:31:12,224 INFO L226 Difference]: Without dead ends: 173 [2018-10-01 00:31:12,224 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:31:12,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-01 00:31:12,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-10-01 00:31:12,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-01 00:31:12,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-10-01 00:31:12,227 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 171 [2018-10-01 00:31:12,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:12,227 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-10-01 00:31:12,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-10-01 00:31:12,227 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-10-01 00:31:12,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-01 00:31:12,227 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:12,227 INFO L375 BasicCegarLoop]: trace histogram [169, 1, 1, 1] [2018-10-01 00:31:12,228 INFO L423 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:12,228 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:12,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1581314472, now seen corresponding path program 169 times [2018-10-01 00:31:12,228 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:12,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:12,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:12,228 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:12,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:13,429 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:13,429 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:13,429 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:13,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:31:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:13,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:14,043 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:14,064 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:14,064 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171, 171] total 171 [2018-10-01 00:31:14,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-10-01 00:31:14,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-10-01 00:31:14,067 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:14,067 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 172 states. [2018-10-01 00:31:16,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:16,443 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions. [2018-10-01 00:31:16,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-10-01 00:31:16,443 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 172 [2018-10-01 00:31:16,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:16,444 INFO L225 Difference]: With dead ends: 176 [2018-10-01 00:31:16,444 INFO L226 Difference]: Without dead ends: 174 [2018-10-01 00:31:16,444 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:31:16,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-10-01 00:31:16,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-10-01 00:31:16,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-10-01 00:31:16,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-10-01 00:31:16,447 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 172 [2018-10-01 00:31:16,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:16,447 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-10-01 00:31:16,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-10-01 00:31:16,447 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-10-01 00:31:16,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-01 00:31:16,447 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:16,447 INFO L375 BasicCegarLoop]: trace histogram [170, 1, 1, 1] [2018-10-01 00:31:16,448 INFO L423 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:16,448 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:16,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1776106401, now seen corresponding path program 170 times [2018-10-01 00:31:16,448 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:16,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:16,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:16,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:31:16,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:17,953 INFO L134 CoverageAnalysis]: Checked inductivity of 14535 backedges. 0 proven. 14535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:17,953 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:17,953 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:17,962 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:31:18,210 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:31:18,210 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:18,218 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 14535 backedges. 0 proven. 14535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:18,585 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:18,585 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172, 172] total 172 [2018-10-01 00:31:18,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-10-01 00:31:18,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-10-01 00:31:18,588 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:18,588 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 173 states. [2018-10-01 00:31:19,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:19,972 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-01 00:31:19,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-10-01 00:31:19,972 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 173 [2018-10-01 00:31:19,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:19,973 INFO L225 Difference]: With dead ends: 177 [2018-10-01 00:31:19,973 INFO L226 Difference]: Without dead ends: 175 [2018-10-01 00:31:19,973 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:31:19,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-01 00:31:19,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-01 00:31:19,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-01 00:31:19,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-10-01 00:31:19,976 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 173 [2018-10-01 00:31:19,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:19,976 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-10-01 00:31:19,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-10-01 00:31:19,976 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-10-01 00:31:19,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-01 00:31:19,977 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:19,977 INFO L375 BasicCegarLoop]: trace histogram [171, 1, 1, 1] [2018-10-01 00:31:19,977 INFO L423 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:19,977 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:19,977 INFO L82 PathProgramCache]: Analyzing trace with hash -775278392, now seen corresponding path program 171 times [2018-10-01 00:31:19,977 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:19,977 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:19,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:19,978 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:19,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:21,204 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:21,204 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:21,204 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:21,212 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:31:21,698 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 87 check-sat command(s) [2018-10-01 00:31:21,698 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:21,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:22,207 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:22,228 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:22,228 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173, 173] total 173 [2018-10-01 00:31:22,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-10-01 00:31:22,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-10-01 00:31:22,231 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:22,231 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 174 states. [2018-10-01 00:31:23,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:23,636 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2018-10-01 00:31:23,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-10-01 00:31:23,636 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 174 [2018-10-01 00:31:23,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:23,637 INFO L225 Difference]: With dead ends: 178 [2018-10-01 00:31:23,637 INFO L226 Difference]: Without dead ends: 176 [2018-10-01 00:31:23,637 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:31:23,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-10-01 00:31:23,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-10-01 00:31:23,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-10-01 00:31:23,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2018-10-01 00:31:23,640 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 174 [2018-10-01 00:31:23,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:23,640 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2018-10-01 00:31:23,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-10-01 00:31:23,640 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2018-10-01 00:31:23,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-10-01 00:31:23,641 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:23,641 INFO L375 BasicCegarLoop]: trace histogram [172, 1, 1, 1] [2018-10-01 00:31:23,641 INFO L423 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:23,641 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:23,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1736171649, now seen corresponding path program 172 times [2018-10-01 00:31:23,641 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:23,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:23,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:23,642 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:23,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:24,856 INFO L134 CoverageAnalysis]: Checked inductivity of 14878 backedges. 0 proven. 14878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:24,856 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:24,856 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:24,864 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:31:25,117 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:31:25,117 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:25,125 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:25,444 INFO L134 CoverageAnalysis]: Checked inductivity of 14878 backedges. 0 proven. 14878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:25,465 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:25,465 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174, 174] total 174 [2018-10-01 00:31:25,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-10-01 00:31:25,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-10-01 00:31:25,468 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:25,468 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 175 states. [2018-10-01 00:31:27,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:27,730 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-10-01 00:31:27,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-10-01 00:31:27,731 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 175 [2018-10-01 00:31:27,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:27,731 INFO L225 Difference]: With dead ends: 179 [2018-10-01 00:31:27,731 INFO L226 Difference]: Without dead ends: 177 [2018-10-01 00:31:27,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:31:27,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-01 00:31:27,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-10-01 00:31:27,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-10-01 00:31:27,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-10-01 00:31:27,735 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 175 [2018-10-01 00:31:27,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:27,735 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-10-01 00:31:27,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-10-01 00:31:27,735 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-10-01 00:31:27,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-01 00:31:27,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:27,736 INFO L375 BasicCegarLoop]: trace histogram [173, 1, 1, 1] [2018-10-01 00:31:27,736 INFO L423 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:27,736 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:27,736 INFO L82 PathProgramCache]: Analyzing trace with hash -2013255704, now seen corresponding path program 173 times [2018-10-01 00:31:27,736 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:27,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:27,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:27,737 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:27,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:28,981 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:28,981 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:28,982 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:28,988 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:31:29,482 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 88 check-sat command(s) [2018-10-01 00:31:29,483 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:29,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:29,822 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:29,844 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:29,845 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175, 175] total 175 [2018-10-01 00:31:29,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-10-01 00:31:29,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-10-01 00:31:29,848 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:29,848 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 176 states. [2018-10-01 00:31:32,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:32,563 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2018-10-01 00:31:32,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-10-01 00:31:32,563 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 176 [2018-10-01 00:31:32,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:32,563 INFO L225 Difference]: With dead ends: 180 [2018-10-01 00:31:32,564 INFO L226 Difference]: Without dead ends: 178 [2018-10-01 00:31:32,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:31:32,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-10-01 00:31:32,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-10-01 00:31:32,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-10-01 00:31:32,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-10-01 00:31:32,566 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 176 [2018-10-01 00:31:32,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:32,566 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-10-01 00:31:32,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-10-01 00:31:32,567 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-10-01 00:31:32,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-01 00:31:32,567 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:32,567 INFO L375 BasicCegarLoop]: trace histogram [174, 1, 1, 1] [2018-10-01 00:31:32,567 INFO L423 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:32,567 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:32,567 INFO L82 PathProgramCache]: Analyzing trace with hash 2013580641, now seen corresponding path program 174 times [2018-10-01 00:31:32,568 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:32,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:32,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:32,568 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:32,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:33,850 INFO L134 CoverageAnalysis]: Checked inductivity of 15225 backedges. 0 proven. 15225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:33,851 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:33,851 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:33,860 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:31:34,338 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 88 check-sat command(s) [2018-10-01 00:31:34,339 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:34,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:34,693 INFO L134 CoverageAnalysis]: Checked inductivity of 15225 backedges. 0 proven. 15225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:34,714 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:34,714 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176, 176] total 176 [2018-10-01 00:31:34,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-10-01 00:31:34,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-10-01 00:31:34,717 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:34,717 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 177 states. [2018-10-01 00:31:37,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:37,202 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-10-01 00:31:37,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-10-01 00:31:37,202 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 177 [2018-10-01 00:31:37,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:37,202 INFO L225 Difference]: With dead ends: 181 [2018-10-01 00:31:37,203 INFO L226 Difference]: Without dead ends: 179 [2018-10-01 00:31:37,203 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:31:37,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-01 00:31:37,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-01 00:31:37,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-01 00:31:37,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-01 00:31:37,206 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 177 [2018-10-01 00:31:37,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:37,206 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-01 00:31:37,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-10-01 00:31:37,206 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-01 00:31:37,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-01 00:31:37,208 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:37,208 INFO L375 BasicCegarLoop]: trace histogram [175, 1, 1, 1] [2018-10-01 00:31:37,208 INFO L423 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:37,208 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:37,208 INFO L82 PathProgramCache]: Analyzing trace with hash -2003511544, now seen corresponding path program 175 times [2018-10-01 00:31:37,209 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:37,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:37,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:37,209 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:37,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:38,601 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:38,601 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:38,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:31:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:38,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:39,205 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:39,226 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:39,227 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177, 177] total 177 [2018-10-01 00:31:39,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-10-01 00:31:39,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-10-01 00:31:39,230 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:39,230 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 178 states. [2018-10-01 00:31:41,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:41,418 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2018-10-01 00:31:41,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-10-01 00:31:41,419 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 178 [2018-10-01 00:31:41,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:41,419 INFO L225 Difference]: With dead ends: 182 [2018-10-01 00:31:41,419 INFO L226 Difference]: Without dead ends: 180 [2018-10-01 00:31:41,419 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:31:41,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-10-01 00:31:41,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-10-01 00:31:41,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-10-01 00:31:41,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2018-10-01 00:31:41,422 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 178 [2018-10-01 00:31:41,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:41,422 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2018-10-01 00:31:41,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-10-01 00:31:41,422 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2018-10-01 00:31:41,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-01 00:31:41,422 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:41,423 INFO L375 BasicCegarLoop]: trace histogram [176, 1, 1, 1] [2018-10-01 00:31:41,423 INFO L423 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:41,423 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:41,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1979317695, now seen corresponding path program 176 times [2018-10-01 00:31:41,423 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:41,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:41,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:41,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:31:41,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 15576 backedges. 0 proven. 15576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:42,862 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:42,862 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:42,869 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:31:43,134 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:31:43,134 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:43,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 15576 backedges. 0 proven. 15576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:43,496 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:43,497 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178, 178] total 178 [2018-10-01 00:31:43,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-10-01 00:31:43,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-10-01 00:31:43,500 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:43,500 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 179 states. [2018-10-01 00:31:45,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:45,698 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-10-01 00:31:45,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-10-01 00:31:45,699 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 179 [2018-10-01 00:31:45,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:45,699 INFO L225 Difference]: With dead ends: 183 [2018-10-01 00:31:45,699 INFO L226 Difference]: Without dead ends: 181 [2018-10-01 00:31:45,700 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:31:45,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-01 00:31:45,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-01 00:31:45,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-01 00:31:45,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-10-01 00:31:45,703 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 179 [2018-10-01 00:31:45,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:45,703 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-10-01 00:31:45,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-10-01 00:31:45,703 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-10-01 00:31:45,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-01 00:31:45,703 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:45,704 INFO L375 BasicCegarLoop]: trace histogram [177, 1, 1, 1] [2018-10-01 00:31:45,704 INFO L423 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:45,704 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:45,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1229308376, now seen corresponding path program 177 times [2018-10-01 00:31:45,704 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:45,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:45,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:45,705 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:45,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:46,986 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:46,986 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:46,986 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:46,995 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:31:47,517 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 90 check-sat command(s) [2018-10-01 00:31:47,518 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:47,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:47,989 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:48,011 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:48,011 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179, 179] total 179 [2018-10-01 00:31:48,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-10-01 00:31:48,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-10-01 00:31:48,013 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:48,013 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 180 states. [2018-10-01 00:31:50,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:50,406 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2018-10-01 00:31:50,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-10-01 00:31:50,406 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 180 [2018-10-01 00:31:50,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:50,407 INFO L225 Difference]: With dead ends: 184 [2018-10-01 00:31:50,407 INFO L226 Difference]: Without dead ends: 182 [2018-10-01 00:31:50,407 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:31:50,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-10-01 00:31:50,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-10-01 00:31:50,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-10-01 00:31:50,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2018-10-01 00:31:50,410 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 180 [2018-10-01 00:31:50,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:50,410 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2018-10-01 00:31:50,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-10-01 00:31:50,410 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2018-10-01 00:31:50,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-01 00:31:50,411 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:50,411 INFO L375 BasicCegarLoop]: trace histogram [178, 1, 1, 1] [2018-10-01 00:31:50,411 INFO L423 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:50,411 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:50,411 INFO L82 PathProgramCache]: Analyzing trace with hash 546144033, now seen corresponding path program 178 times [2018-10-01 00:31:50,411 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:50,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:50,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:50,412 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:50,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:51,712 INFO L134 CoverageAnalysis]: Checked inductivity of 15931 backedges. 0 proven. 15931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:51,712 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:51,712 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:51,743 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:31:52,005 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:31:52,006 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:52,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:52,341 INFO L134 CoverageAnalysis]: Checked inductivity of 15931 backedges. 0 proven. 15931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:52,362 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:52,363 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180, 180] total 180 [2018-10-01 00:31:52,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-10-01 00:31:52,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-10-01 00:31:52,365 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:52,365 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 181 states. [2018-10-01 00:31:55,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:55,025 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-01 00:31:55,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-10-01 00:31:55,026 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 181 [2018-10-01 00:31:55,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:55,026 INFO L225 Difference]: With dead ends: 185 [2018-10-01 00:31:55,026 INFO L226 Difference]: Without dead ends: 183 [2018-10-01 00:31:55,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:31:55,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-01 00:31:55,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-01 00:31:55,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-01 00:31:55,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-10-01 00:31:55,029 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 181 [2018-10-01 00:31:55,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:55,029 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-10-01 00:31:55,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-10-01 00:31:55,029 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-10-01 00:31:55,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-01 00:31:55,030 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:55,030 INFO L375 BasicCegarLoop]: trace histogram [179, 1, 1, 1] [2018-10-01 00:31:55,030 INFO L423 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:55,030 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:55,030 INFO L82 PathProgramCache]: Analyzing trace with hash -249406136, now seen corresponding path program 179 times [2018-10-01 00:31:55,030 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:55,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:55,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:55,031 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:55,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:56,390 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:56,391 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:56,391 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:56,398 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:31:56,909 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 91 check-sat command(s) [2018-10-01 00:31:56,909 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:56,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:57,252 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:57,273 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:57,274 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181, 181] total 181 [2018-10-01 00:31:57,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-10-01 00:31:57,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-10-01 00:31:57,276 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:57,277 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 182 states. [2018-10-01 00:32:00,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:00,094 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2018-10-01 00:32:00,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-10-01 00:32:00,095 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 182 [2018-10-01 00:32:00,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:00,095 INFO L225 Difference]: With dead ends: 186 [2018-10-01 00:32:00,095 INFO L226 Difference]: Without dead ends: 184 [2018-10-01 00:32:00,095 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:32:00,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-10-01 00:32:00,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-10-01 00:32:00,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-01 00:32:00,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-10-01 00:32:00,099 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 182 [2018-10-01 00:32:00,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:00,100 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-10-01 00:32:00,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-10-01 00:32:00,100 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-10-01 00:32:00,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-01 00:32:00,100 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:00,100 INFO L375 BasicCegarLoop]: trace histogram [180, 1, 1, 1] [2018-10-01 00:32:00,101 INFO L423 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:00,101 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:00,101 INFO L82 PathProgramCache]: Analyzing trace with hash 858342401, now seen corresponding path program 180 times [2018-10-01 00:32:00,101 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:00,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:00,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:00,102 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:00,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:01,439 INFO L134 CoverageAnalysis]: Checked inductivity of 16290 backedges. 0 proven. 16290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:01,439 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:01,439 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:01,447 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:32:01,957 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-10-01 00:32:01,958 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:01,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:02,308 INFO L134 CoverageAnalysis]: Checked inductivity of 16290 backedges. 0 proven. 16290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:02,329 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:02,329 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182, 182] total 182 [2018-10-01 00:32:02,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-10-01 00:32:02,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-10-01 00:32:02,333 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:02,333 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 183 states. [2018-10-01 00:32:04,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:04,835 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-10-01 00:32:04,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-10-01 00:32:04,835 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 183 [2018-10-01 00:32:04,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:04,836 INFO L225 Difference]: With dead ends: 187 [2018-10-01 00:32:04,836 INFO L226 Difference]: Without dead ends: 185 [2018-10-01 00:32:04,836 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:32:04,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-01 00:32:04,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-10-01 00:32:04,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-01 00:32:04,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-10-01 00:32:04,839 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 183 [2018-10-01 00:32:04,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:04,840 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-10-01 00:32:04,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-10-01 00:32:04,840 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-10-01 00:32:04,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-01 00:32:04,840 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:04,841 INFO L375 BasicCegarLoop]: trace histogram [181, 1, 1, 1] [2018-10-01 00:32:04,841 INFO L423 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:04,841 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:04,841 INFO L82 PathProgramCache]: Analyzing trace with hash 838808680, now seen corresponding path program 181 times [2018-10-01 00:32:04,841 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:04,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:04,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:04,842 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:04,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:06,198 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:06,198 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:06,198 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:06,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:32:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:06,485 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:06,855 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:06,877 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:06,877 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183, 183] total 183 [2018-10-01 00:32:06,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-10-01 00:32:06,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-10-01 00:32:06,879 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:06,880 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 184 states. [2018-10-01 00:32:09,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:09,533 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions. [2018-10-01 00:32:09,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-10-01 00:32:09,533 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 184 [2018-10-01 00:32:09,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:09,534 INFO L225 Difference]: With dead ends: 188 [2018-10-01 00:32:09,534 INFO L226 Difference]: Without dead ends: 186 [2018-10-01 00:32:09,534 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:32:09,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-10-01 00:32:09,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-10-01 00:32:09,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-10-01 00:32:09,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2018-10-01 00:32:09,537 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 184 [2018-10-01 00:32:09,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:09,537 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2018-10-01 00:32:09,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-10-01 00:32:09,537 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2018-10-01 00:32:09,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-01 00:32:09,537 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:09,537 INFO L375 BasicCegarLoop]: trace histogram [182, 1, 1, 1] [2018-10-01 00:32:09,538 INFO L423 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:09,538 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:09,538 INFO L82 PathProgramCache]: Analyzing trace with hash 233263329, now seen corresponding path program 182 times [2018-10-01 00:32:09,538 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:09,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:09,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:09,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:32:09,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:10,899 INFO L134 CoverageAnalysis]: Checked inductivity of 16653 backedges. 0 proven. 16653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:10,899 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:10,899 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:10,906 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:32:11,173 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:32:11,173 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:11,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:11,527 INFO L134 CoverageAnalysis]: Checked inductivity of 16653 backedges. 0 proven. 16653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:11,549 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:11,549 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184, 184] total 184 [2018-10-01 00:32:11,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-10-01 00:32:11,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-10-01 00:32:11,552 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:11,552 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 185 states. [2018-10-01 00:32:13,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:13,492 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-10-01 00:32:13,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-10-01 00:32:13,493 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 185 [2018-10-01 00:32:13,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:13,493 INFO L225 Difference]: With dead ends: 189 [2018-10-01 00:32:13,493 INFO L226 Difference]: Without dead ends: 187 [2018-10-01 00:32:13,493 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:32:13,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-01 00:32:13,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-01 00:32:13,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-01 00:32:13,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-01 00:32:13,496 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 185 [2018-10-01 00:32:13,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:13,496 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-01 00:32:13,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-10-01 00:32:13,496 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-01 00:32:13,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-01 00:32:13,497 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:13,497 INFO L375 BasicCegarLoop]: trace histogram [183, 1, 1, 1] [2018-10-01 00:32:13,497 INFO L423 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:13,497 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:13,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1358773368, now seen corresponding path program 183 times [2018-10-01 00:32:13,497 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:13,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:13,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:13,498 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:13,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:14,874 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:14,874 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:14,874 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:14,882 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:32:15,426 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 93 check-sat command(s) [2018-10-01 00:32:15,426 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:15,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:15,803 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:15,804 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185, 185] total 185 [2018-10-01 00:32:15,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-10-01 00:32:15,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-10-01 00:32:15,807 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:15,807 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 186 states. [2018-10-01 00:32:17,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:17,276 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2018-10-01 00:32:17,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-10-01 00:32:17,277 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 186 [2018-10-01 00:32:17,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:17,277 INFO L225 Difference]: With dead ends: 190 [2018-10-01 00:32:17,277 INFO L226 Difference]: Without dead ends: 188 [2018-10-01 00:32:17,277 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:32:17,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-10-01 00:32:17,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-10-01 00:32:17,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-10-01 00:32:17,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2018-10-01 00:32:17,280 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 186 [2018-10-01 00:32:17,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:17,280 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2018-10-01 00:32:17,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-10-01 00:32:17,280 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2018-10-01 00:32:17,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-01 00:32:17,281 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:17,281 INFO L375 BasicCegarLoop]: trace histogram [184, 1, 1, 1] [2018-10-01 00:32:17,281 INFO L423 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:17,281 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:17,281 INFO L82 PathProgramCache]: Analyzing trace with hash 827696577, now seen corresponding path program 184 times [2018-10-01 00:32:17,281 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:17,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:17,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:17,282 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:17,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:18,888 INFO L134 CoverageAnalysis]: Checked inductivity of 17020 backedges. 0 proven. 17020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:18,889 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:18,889 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:18,896 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:32:19,164 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:32:19,164 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:19,173 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:19,520 INFO L134 CoverageAnalysis]: Checked inductivity of 17020 backedges. 0 proven. 17020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:19,541 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:19,541 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186, 186] total 186 [2018-10-01 00:32:19,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-10-01 00:32:19,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-10-01 00:32:19,544 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:19,544 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 187 states. [2018-10-01 00:32:22,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:22,461 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-10-01 00:32:22,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-10-01 00:32:22,461 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 187 [2018-10-01 00:32:22,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:22,462 INFO L225 Difference]: With dead ends: 191 [2018-10-01 00:32:22,462 INFO L226 Difference]: Without dead ends: 189 [2018-10-01 00:32:22,462 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:32:22,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-01 00:32:22,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-10-01 00:32:22,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-01 00:32:22,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-10-01 00:32:22,464 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 187 [2018-10-01 00:32:22,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:22,465 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-10-01 00:32:22,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-10-01 00:32:22,465 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-10-01 00:32:22,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-01 00:32:22,465 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:22,465 INFO L375 BasicCegarLoop]: trace histogram [185, 1, 1, 1] [2018-10-01 00:32:22,466 INFO L423 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:22,466 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:22,466 INFO L82 PathProgramCache]: Analyzing trace with hash -111211864, now seen corresponding path program 185 times [2018-10-01 00:32:22,466 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:22,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:22,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:22,466 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:22,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:24,043 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:24,044 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:24,044 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:24,052 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:32:24,607 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 94 check-sat command(s) [2018-10-01 00:32:24,607 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:24,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:24,986 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:25,008 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:25,008 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187, 187] total 187 [2018-10-01 00:32:25,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-10-01 00:32:25,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-10-01 00:32:25,011 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:25,012 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 188 states. [2018-10-01 00:32:27,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:27,849 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2018-10-01 00:32:27,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-10-01 00:32:27,849 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 188 [2018-10-01 00:32:27,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:27,849 INFO L225 Difference]: With dead ends: 192 [2018-10-01 00:32:27,849 INFO L226 Difference]: Without dead ends: 190 [2018-10-01 00:32:27,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:32:27,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-10-01 00:32:27,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-10-01 00:32:27,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-10-01 00:32:27,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2018-10-01 00:32:27,852 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 188 [2018-10-01 00:32:27,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:27,852 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2018-10-01 00:32:27,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-10-01 00:32:27,853 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2018-10-01 00:32:27,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-01 00:32:27,853 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:27,853 INFO L375 BasicCegarLoop]: trace histogram [186, 1, 1, 1] [2018-10-01 00:32:27,853 INFO L423 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:27,853 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:27,854 INFO L82 PathProgramCache]: Analyzing trace with hash 847397537, now seen corresponding path program 186 times [2018-10-01 00:32:27,854 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:27,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:27,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:27,854 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:27,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:29,504 INFO L134 CoverageAnalysis]: Checked inductivity of 17391 backedges. 0 proven. 17391 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:29,505 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:29,505 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:29,511 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:32:30,041 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 94 check-sat command(s) [2018-10-01 00:32:30,041 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:30,051 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:30,400 INFO L134 CoverageAnalysis]: Checked inductivity of 17391 backedges. 0 proven. 17391 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:30,422 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:30,422 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188, 188] total 188 [2018-10-01 00:32:30,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-10-01 00:32:30,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-10-01 00:32:30,425 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:30,425 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 189 states. [2018-10-01 00:32:31,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:31,890 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-10-01 00:32:31,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-10-01 00:32:31,890 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 189 [2018-10-01 00:32:31,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:31,891 INFO L225 Difference]: With dead ends: 193 [2018-10-01 00:32:31,891 INFO L226 Difference]: Without dead ends: 191 [2018-10-01 00:32:31,891 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:32:31,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-01 00:32:31,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-01 00:32:31,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-01 00:32:31,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-10-01 00:32:31,894 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 189 [2018-10-01 00:32:31,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:31,894 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-10-01 00:32:31,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-10-01 00:32:31,894 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-10-01 00:32:31,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-01 00:32:31,894 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:31,894 INFO L375 BasicCegarLoop]: trace histogram [187, 1, 1, 1] [2018-10-01 00:32:31,895 INFO L423 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:31,895 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:31,895 INFO L82 PathProgramCache]: Analyzing trace with hash 499517896, now seen corresponding path program 187 times [2018-10-01 00:32:31,895 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:31,895 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:31,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:31,895 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:31,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:33,314 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:33,314 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:33,314 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:33,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:32:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:33,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:34,072 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:34,093 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:34,093 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189, 189] total 189 [2018-10-01 00:32:34,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-10-01 00:32:34,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-10-01 00:32:34,096 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:34,096 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 190 states. [2018-10-01 00:32:37,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:37,217 INFO L93 Difference]: Finished difference Result 194 states and 194 transitions. [2018-10-01 00:32:37,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-10-01 00:32:37,217 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 190 [2018-10-01 00:32:37,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:37,218 INFO L225 Difference]: With dead ends: 194 [2018-10-01 00:32:37,218 INFO L226 Difference]: Without dead ends: 192 [2018-10-01 00:32:37,218 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:32:37,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-10-01 00:32:37,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-10-01 00:32:37,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-10-01 00:32:37,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2018-10-01 00:32:37,221 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 190 [2018-10-01 00:32:37,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:37,221 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2018-10-01 00:32:37,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-10-01 00:32:37,221 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2018-10-01 00:32:37,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-01 00:32:37,221 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:37,221 INFO L375 BasicCegarLoop]: trace histogram [188, 1, 1, 1] [2018-10-01 00:32:37,222 INFO L423 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:37,222 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:37,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1694816383, now seen corresponding path program 188 times [2018-10-01 00:32:37,222 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:37,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:37,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:37,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:32:37,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:38,641 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:38,641 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:38,641 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:38,650 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:32:38,932 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:32:38,932 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:38,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:39,369 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:39,391 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:39,392 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190, 190] total 190 [2018-10-01 00:32:39,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-10-01 00:32:39,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-10-01 00:32:39,394 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:39,394 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand 191 states. [2018-10-01 00:32:41,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:41,325 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-01 00:32:41,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-10-01 00:32:41,325 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 191 [2018-10-01 00:32:41,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:41,326 INFO L225 Difference]: With dead ends: 195 [2018-10-01 00:32:41,326 INFO L226 Difference]: Without dead ends: 193 [2018-10-01 00:32:41,326 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:32:41,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-01 00:32:41,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-10-01 00:32:41,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-01 00:32:41,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-10-01 00:32:41,330 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 191 [2018-10-01 00:32:41,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:41,330 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-10-01 00:32:41,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-10-01 00:32:41,331 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-10-01 00:32:41,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-01 00:32:41,331 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:41,331 INFO L375 BasicCegarLoop]: trace histogram [189, 1, 1, 1] [2018-10-01 00:32:41,332 INFO L423 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:41,332 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:41,332 INFO L82 PathProgramCache]: Analyzing trace with hash -999702296, now seen corresponding path program 189 times [2018-10-01 00:32:41,332 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:41,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:41,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:41,333 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:41,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:42,900 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:42,900 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:42,900 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:42,909 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:32:43,483 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 96 check-sat command(s) [2018-10-01 00:32:43,483 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:43,491 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:43,903 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:43,924 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:43,925 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191] total 191 [2018-10-01 00:32:43,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-10-01 00:32:43,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-10-01 00:32:43,928 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:43,928 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 192 states. [2018-10-01 00:32:46,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:46,517 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2018-10-01 00:32:46,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-10-01 00:32:46,517 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 192 [2018-10-01 00:32:46,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:46,518 INFO L225 Difference]: With dead ends: 196 [2018-10-01 00:32:46,518 INFO L226 Difference]: Without dead ends: 194 [2018-10-01 00:32:46,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:32:46,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-10-01 00:32:46,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-10-01 00:32:46,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-10-01 00:32:46,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2018-10-01 00:32:46,520 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 192 [2018-10-01 00:32:46,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:46,521 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2018-10-01 00:32:46,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-10-01 00:32:46,521 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2018-10-01 00:32:46,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-01 00:32:46,521 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:46,521 INFO L375 BasicCegarLoop]: trace histogram [190, 1, 1, 1] [2018-10-01 00:32:46,522 INFO L423 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:46,522 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:46,522 INFO L82 PathProgramCache]: Analyzing trace with hash -926002079, now seen corresponding path program 190 times [2018-10-01 00:32:46,522 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:46,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:46,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:46,523 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:46,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:48,001 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:48,001 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:48,001 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:48,008 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:32:48,290 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:32:48,290 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:48,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:48,649 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:48,670 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:48,671 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192] total 192 [2018-10-01 00:32:48,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-10-01 00:32:48,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-10-01 00:32:48,673 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:48,673 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 193 states. [2018-10-01 00:32:50,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:50,881 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-10-01 00:32:50,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-10-01 00:32:50,882 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 193 [2018-10-01 00:32:50,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:50,882 INFO L225 Difference]: With dead ends: 197 [2018-10-01 00:32:50,882 INFO L226 Difference]: Without dead ends: 195 [2018-10-01 00:32:50,882 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:32:50,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-01 00:32:50,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-01 00:32:50,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-01 00:32:50,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-10-01 00:32:50,886 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 193 [2018-10-01 00:32:50,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:50,886 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-10-01 00:32:50,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-10-01 00:32:50,886 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-10-01 00:32:50,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-01 00:32:50,887 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:50,887 INFO L375 BasicCegarLoop]: trace histogram [191, 1, 1, 1] [2018-10-01 00:32:50,887 INFO L423 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:50,887 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:50,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1358704648, now seen corresponding path program 191 times [2018-10-01 00:32:50,887 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:50,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:50,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:50,888 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:50,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:52,410 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:52,410 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:52,420 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:32:52,991 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 97 check-sat command(s) [2018-10-01 00:32:52,991 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:53,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:53,362 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:53,383 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:53,384 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193] total 193 [2018-10-01 00:32:53,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-10-01 00:32:53,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-10-01 00:32:53,387 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:53,387 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 194 states. [2018-10-01 00:32:55,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:55,949 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2018-10-01 00:32:55,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-10-01 00:32:55,949 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 194 [2018-10-01 00:32:55,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:55,950 INFO L225 Difference]: With dead ends: 198 [2018-10-01 00:32:55,950 INFO L226 Difference]: Without dead ends: 196 [2018-10-01 00:32:55,950 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:32:55,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-10-01 00:32:55,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-10-01 00:32:55,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-10-01 00:32:55,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2018-10-01 00:32:55,953 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 194 [2018-10-01 00:32:55,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:55,954 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2018-10-01 00:32:55,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-10-01 00:32:55,954 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2018-10-01 00:32:55,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-01 00:32:55,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:55,955 INFO L375 BasicCegarLoop]: trace histogram [192, 1, 1, 1] [2018-10-01 00:32:55,955 INFO L423 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:55,955 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:55,955 INFO L82 PathProgramCache]: Analyzing trace with hash -829830847, now seen corresponding path program 192 times [2018-10-01 00:32:55,955 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:55,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:55,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:55,960 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:55,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:57,590 INFO L134 CoverageAnalysis]: Checked inductivity of 18528 backedges. 0 proven. 18528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:57,590 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:57,590 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-01 00:32:57,600 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:58,166 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-10-01 00:32:58,166 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:58,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:58,534 INFO L134 CoverageAnalysis]: Checked inductivity of 18528 backedges. 0 proven. 18528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:58,556 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:58,556 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194, 194] total 194 [2018-10-01 00:32:58,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-10-01 00:32:58,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-10-01 00:32:58,559 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:58,559 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 195 states. [2018-10-01 00:33:00,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:00,188 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-10-01 00:33:00,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-10-01 00:33:00,188 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 195 [2018-10-01 00:33:00,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:00,189 INFO L225 Difference]: With dead ends: 199 [2018-10-01 00:33:00,189 INFO L226 Difference]: Without dead ends: 197 [2018-10-01 00:33:00,189 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:33:00,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-10-01 00:33:00,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-10-01 00:33:00,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-01 00:33:00,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-01 00:33:00,192 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 195 [2018-10-01 00:33:00,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:00,192 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-01 00:33:00,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-10-01 00:33:00,192 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-01 00:33:00,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-01 00:33:00,193 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:00,193 INFO L375 BasicCegarLoop]: trace histogram [193, 1, 1, 1] [2018-10-01 00:33:00,193 INFO L423 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:00,193 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:00,193 INFO L82 PathProgramCache]: Analyzing trace with hash 45045544, now seen corresponding path program 193 times [2018-10-01 00:33:00,193 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:00,194 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:00,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:00,194 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:00,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:01,736 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:01,736 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:01,736 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:01,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:33:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:02,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:02,411 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:02,433 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:02,433 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195, 195] total 195 [2018-10-01 00:33:02,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-10-01 00:33:02,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-10-01 00:33:02,436 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:02,436 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 196 states. [2018-10-01 00:33:05,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:05,769 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2018-10-01 00:33:05,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-10-01 00:33:05,769 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 196 [2018-10-01 00:33:05,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:05,770 INFO L225 Difference]: With dead ends: 200 [2018-10-01 00:33:05,770 INFO L226 Difference]: Without dead ends: 198 [2018-10-01 00:33:05,770 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:33:05,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-10-01 00:33:05,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2018-10-01 00:33:05,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-10-01 00:33:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-10-01 00:33:05,773 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 196 [2018-10-01 00:33:05,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:05,773 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-10-01 00:33:05,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-10-01 00:33:05,773 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-10-01 00:33:05,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-01 00:33:05,774 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:05,774 INFO L375 BasicCegarLoop]: trace histogram [194, 1, 1, 1] [2018-10-01 00:33:05,774 INFO L423 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:05,774 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:05,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1396409889, now seen corresponding path program 194 times [2018-10-01 00:33:05,774 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:05,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:05,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:05,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:33:05,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:07,290 INFO L134 CoverageAnalysis]: Checked inductivity of 18915 backedges. 0 proven. 18915 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:07,290 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:07,290 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:07,298 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:33:07,584 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:33:07,584 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:07,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:07,968 INFO L134 CoverageAnalysis]: Checked inductivity of 18915 backedges. 0 proven. 18915 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:08,020 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:08,020 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196, 196] total 196 [2018-10-01 00:33:08,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-10-01 00:33:08,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-10-01 00:33:08,024 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:08,024 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 197 states. [2018-10-01 00:33:10,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:10,607 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-10-01 00:33:10,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-10-01 00:33:10,607 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 197 [2018-10-01 00:33:10,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:10,608 INFO L225 Difference]: With dead ends: 201 [2018-10-01 00:33:10,608 INFO L226 Difference]: Without dead ends: 199 [2018-10-01 00:33:10,608 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:33:10,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-01 00:33:10,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-01 00:33:10,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-01 00:33:10,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-10-01 00:33:10,612 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 197 [2018-10-01 00:33:10,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:10,612 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-10-01 00:33:10,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-10-01 00:33:10,612 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-10-01 00:33:10,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-01 00:33:10,613 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:10,613 INFO L375 BasicCegarLoop]: trace histogram [195, 1, 1, 1] [2018-10-01 00:33:10,613 INFO L423 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:10,613 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:10,613 INFO L82 PathProgramCache]: Analyzing trace with hash 339031624, now seen corresponding path program 195 times [2018-10-01 00:33:10,613 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:10,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:10,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:10,614 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:10,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:12,193 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:12,193 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:12,193 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:12,233 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:33:12,857 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 99 check-sat command(s) [2018-10-01 00:33:12,857 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:12,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:13,236 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:13,258 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:13,259 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197, 197] total 197 [2018-10-01 00:33:13,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-10-01 00:33:13,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-10-01 00:33:13,261 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:13,262 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 198 states. [2018-10-01 00:33:15,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:15,396 INFO L93 Difference]: Finished difference Result 202 states and 202 transitions. [2018-10-01 00:33:15,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-10-01 00:33:15,397 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 198 [2018-10-01 00:33:15,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:15,397 INFO L225 Difference]: With dead ends: 202 [2018-10-01 00:33:15,397 INFO L226 Difference]: Without dead ends: 200 [2018-10-01 00:33:15,397 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:33:15,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-10-01 00:33:15,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-10-01 00:33:15,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-10-01 00:33:15,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-10-01 00:33:15,400 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 198 [2018-10-01 00:33:15,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:15,400 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-10-01 00:33:15,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-10-01 00:33:15,401 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-10-01 00:33:15,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-01 00:33:15,401 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:15,401 INFO L375 BasicCegarLoop]: trace histogram [196, 1, 1, 1] [2018-10-01 00:33:15,401 INFO L423 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:15,401 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:15,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1920043777, now seen corresponding path program 196 times [2018-10-01 00:33:15,402 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:15,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:15,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:15,402 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:15,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:16,933 INFO L134 CoverageAnalysis]: Checked inductivity of 19306 backedges. 0 proven. 19306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:16,933 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:16,933 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:16,943 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:33:17,231 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:33:17,231 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:17,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:17,607 INFO L134 CoverageAnalysis]: Checked inductivity of 19306 backedges. 0 proven. 19306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:17,629 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:17,629 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198, 198] total 198 [2018-10-01 00:33:17,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-10-01 00:33:17,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-10-01 00:33:17,632 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:17,632 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 199 states. [2018-10-01 00:33:20,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:20,957 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-10-01 00:33:20,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-10-01 00:33:20,957 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 199 [2018-10-01 00:33:20,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:20,958 INFO L225 Difference]: With dead ends: 203 [2018-10-01 00:33:20,958 INFO L226 Difference]: Without dead ends: 201 [2018-10-01 00:33:20,958 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:33:20,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-01 00:33:20,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-10-01 00:33:20,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-10-01 00:33:20,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-10-01 00:33:20,962 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 199 [2018-10-01 00:33:20,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:20,962 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-10-01 00:33:20,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-10-01 00:33:20,962 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-10-01 00:33:20,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-01 00:33:20,963 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:20,963 INFO L375 BasicCegarLoop]: trace histogram [197, 1, 1, 1] [2018-10-01 00:33:20,963 INFO L423 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:20,963 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:20,964 INFO L82 PathProgramCache]: Analyzing trace with hash -608187032, now seen corresponding path program 197 times [2018-10-01 00:33:20,964 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:20,964 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:20,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:20,964 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:20,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:22,557 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:22,558 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:22,558 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:22,564 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:33:23,173 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 100 check-sat command(s) [2018-10-01 00:33:23,173 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:23,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:23,581 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:23,582 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199, 199] total 199 [2018-10-01 00:33:23,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-10-01 00:33:23,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-10-01 00:33:23,585 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:23,585 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 200 states. [2018-10-01 00:33:26,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:26,948 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2018-10-01 00:33:26,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-10-01 00:33:26,949 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 200 [2018-10-01 00:33:26,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:26,949 INFO L225 Difference]: With dead ends: 204 [2018-10-01 00:33:26,949 INFO L226 Difference]: Without dead ends: 202 [2018-10-01 00:33:26,949 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:33:26,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-10-01 00:33:26,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-10-01 00:33:26,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-10-01 00:33:26,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-10-01 00:33:26,952 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 200 [2018-10-01 00:33:26,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:26,952 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-10-01 00:33:26,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-10-01 00:33:26,953 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-10-01 00:33:26,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-01 00:33:26,953 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:26,953 INFO L375 BasicCegarLoop]: trace histogram [198, 1, 1, 1] [2018-10-01 00:33:26,953 INFO L423 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:26,953 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:26,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1673930783, now seen corresponding path program 198 times [2018-10-01 00:33:26,954 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:26,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:26,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:26,954 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:26,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:28,519 INFO L134 CoverageAnalysis]: Checked inductivity of 19701 backedges. 0 proven. 19701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:28,519 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:28,519 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:28,527 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:33:29,111 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 100 check-sat command(s) [2018-10-01 00:33:29,111 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:29,122 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:29,500 INFO L134 CoverageAnalysis]: Checked inductivity of 19701 backedges. 0 proven. 19701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:29,521 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:29,522 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200, 200] total 200 [2018-10-01 00:33:29,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-10-01 00:33:29,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-10-01 00:33:29,525 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:29,525 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 201 states. [2018-10-01 00:33:32,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:32,361 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-10-01 00:33:32,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-10-01 00:33:32,362 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 201 [2018-10-01 00:33:32,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:32,362 INFO L225 Difference]: With dead ends: 205 [2018-10-01 00:33:32,362 INFO L226 Difference]: Without dead ends: 203 [2018-10-01 00:33:32,362 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:33:32,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-01 00:33:32,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-01 00:33:32,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-01 00:33:32,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-10-01 00:33:32,366 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 201 [2018-10-01 00:33:32,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:32,366 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-10-01 00:33:32,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-10-01 00:33:32,366 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-10-01 00:33:32,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-01 00:33:32,367 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:32,367 INFO L375 BasicCegarLoop]: trace histogram [199, 1, 1, 1] [2018-10-01 00:33:32,367 INFO L423 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:32,367 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:32,367 INFO L82 PathProgramCache]: Analyzing trace with hash -352248696, now seen corresponding path program 199 times [2018-10-01 00:33:32,367 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:32,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:32,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:32,368 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:32,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:33,936 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:33,936 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:33,936 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:33,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:33:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:34,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:34,666 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:34,666 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201, 201] total 201 [2018-10-01 00:33:34,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-10-01 00:33:34,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-10-01 00:33:34,669 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:34,669 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 202 states. [2018-10-01 00:33:36,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:36,652 INFO L93 Difference]: Finished difference Result 206 states and 206 transitions. [2018-10-01 00:33:36,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-10-01 00:33:36,652 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 202 [2018-10-01 00:33:36,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:36,653 INFO L225 Difference]: With dead ends: 206 [2018-10-01 00:33:36,653 INFO L226 Difference]: Without dead ends: 204 [2018-10-01 00:33:36,653 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:33:36,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-10-01 00:33:36,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-10-01 00:33:36,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-10-01 00:33:36,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2018-10-01 00:33:36,656 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 202 [2018-10-01 00:33:36,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:36,656 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2018-10-01 00:33:36,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-10-01 00:33:36,656 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2018-10-01 00:33:36,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-01 00:33:36,656 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:36,657 INFO L375 BasicCegarLoop]: trace histogram [200, 1, 1, 1] [2018-10-01 00:33:36,657 INFO L423 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:36,657 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:36,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1965190337, now seen corresponding path program 200 times [2018-10-01 00:33:36,657 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:36,657 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:36,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:36,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:33:36,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:38,251 INFO L134 CoverageAnalysis]: Checked inductivity of 20100 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:38,251 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:38,251 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:38,259 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:33:38,549 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:33:38,549 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:38,559 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:38,936 INFO L134 CoverageAnalysis]: Checked inductivity of 20100 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:38,958 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:38,958 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202, 202] total 202 [2018-10-01 00:33:38,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-10-01 00:33:38,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-10-01 00:33:38,961 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:38,961 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand 203 states. [2018-10-01 00:33:40,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:40,690 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-10-01 00:33:40,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-10-01 00:33:40,691 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 203 [2018-10-01 00:33:40,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:40,691 INFO L225 Difference]: With dead ends: 207 [2018-10-01 00:33:40,691 INFO L226 Difference]: Without dead ends: 205 [2018-10-01 00:33:40,691 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:33:40,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-10-01 00:33:40,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-10-01 00:33:40,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-01 00:33:40,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-10-01 00:33:40,694 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 203 [2018-10-01 00:33:40,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:40,694 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-10-01 00:33:40,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-10-01 00:33:40,695 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-10-01 00:33:40,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-01 00:33:40,695 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:40,695 INFO L375 BasicCegarLoop]: trace histogram [201, 1, 1, 1] [2018-10-01 00:33:40,695 INFO L423 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:40,695 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:40,695 INFO L82 PathProgramCache]: Analyzing trace with hash 791356328, now seen corresponding path program 201 times [2018-10-01 00:33:40,696 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:40,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:40,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:40,696 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:40,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:42,320 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:42,321 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:42,321 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:42,328 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:33:42,967 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 102 check-sat command(s) [2018-10-01 00:33:42,968 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:42,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:43,362 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:43,383 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:43,384 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203, 203] total 203 [2018-10-01 00:33:43,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-10-01 00:33:43,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-10-01 00:33:43,388 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:43,388 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 204 states. [2018-10-01 00:33:45,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:45,345 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-10-01 00:33:45,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-10-01 00:33:45,346 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 204 [2018-10-01 00:33:45,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:45,346 INFO L225 Difference]: With dead ends: 208 [2018-10-01 00:33:45,346 INFO L226 Difference]: Without dead ends: 206 [2018-10-01 00:33:45,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:33:45,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-10-01 00:33:45,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-10-01 00:33:45,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-10-01 00:33:45,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2018-10-01 00:33:45,349 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 204 [2018-10-01 00:33:45,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:45,350 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2018-10-01 00:33:45,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-10-01 00:33:45,350 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2018-10-01 00:33:45,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-01 00:33:45,350 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:45,351 INFO L375 BasicCegarLoop]: trace histogram [202, 1, 1, 1] [2018-10-01 00:33:45,351 INFO L423 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:45,351 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:45,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1237759583, now seen corresponding path program 202 times [2018-10-01 00:33:45,351 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:45,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:45,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:45,352 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:45,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:46,979 INFO L134 CoverageAnalysis]: Checked inductivity of 20503 backedges. 0 proven. 20503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:46,979 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:46,979 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:46,986 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:33:47,281 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:33:47,282 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:47,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:47,719 INFO L134 CoverageAnalysis]: Checked inductivity of 20503 backedges. 0 proven. 20503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:47,740 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:47,741 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204, 204] total 204 [2018-10-01 00:33:47,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-10-01 00:33:47,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-10-01 00:33:47,744 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:47,744 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 205 states. [2018-10-01 00:33:49,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:49,601 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-01 00:33:49,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-10-01 00:33:49,602 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 205 [2018-10-01 00:33:49,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:49,602 INFO L225 Difference]: With dead ends: 209 [2018-10-01 00:33:49,602 INFO L226 Difference]: Without dead ends: 207 [2018-10-01 00:33:49,603 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:33:49,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-01 00:33:49,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-10-01 00:33:49,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-01 00:33:49,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-10-01 00:33:49,605 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 205 [2018-10-01 00:33:49,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:49,606 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-10-01 00:33:49,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-10-01 00:33:49,606 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-10-01 00:33:49,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-01 00:33:49,606 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:49,606 INFO L375 BasicCegarLoop]: trace histogram [203, 1, 1, 1] [2018-10-01 00:33:49,606 INFO L423 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:49,607 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:49,607 INFO L82 PathProgramCache]: Analyzing trace with hash 284156616, now seen corresponding path program 203 times [2018-10-01 00:33:49,607 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:49,607 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:49,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:49,607 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:49,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:51,432 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:51,433 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:51,433 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:51,439 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:33:52,090 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 103 check-sat command(s) [2018-10-01 00:33:52,090 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:52,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:52,483 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:52,505 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:52,505 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205, 205] total 205 [2018-10-01 00:33:52,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-10-01 00:33:52,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-10-01 00:33:52,508 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:52,509 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 206 states. [2018-10-01 00:33:54,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:54,371 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2018-10-01 00:33:54,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-10-01 00:33:54,371 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 206 [2018-10-01 00:33:54,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:54,372 INFO L225 Difference]: With dead ends: 210 [2018-10-01 00:33:54,372 INFO L226 Difference]: Without dead ends: 208 [2018-10-01 00:33:54,372 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:33:54,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-10-01 00:33:54,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-10-01 00:33:54,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-10-01 00:33:54,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2018-10-01 00:33:54,376 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 206 [2018-10-01 00:33:54,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:54,376 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2018-10-01 00:33:54,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-10-01 00:33:54,376 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2018-10-01 00:33:54,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-01 00:33:54,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:54,377 INFO L375 BasicCegarLoop]: trace histogram [204, 1, 1, 1] [2018-10-01 00:33:54,377 INFO L423 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:54,377 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:54,377 INFO L82 PathProgramCache]: Analyzing trace with hash 218918529, now seen corresponding path program 204 times [2018-10-01 00:33:54,377 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:54,377 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:54,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:54,378 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:54,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:56,243 INFO L134 CoverageAnalysis]: Checked inductivity of 20910 backedges. 0 proven. 20910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:56,243 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:56,243 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:56,253 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:33:56,875 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-10-01 00:33:56,875 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:56,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:57,284 INFO L134 CoverageAnalysis]: Checked inductivity of 20910 backedges. 0 proven. 20910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:57,306 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:57,307 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206, 206] total 206 [2018-10-01 00:33:57,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-10-01 00:33:57,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-10-01 00:33:57,310 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:57,310 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 207 states. [2018-10-01 00:33:59,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:59,352 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-10-01 00:33:59,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-10-01 00:33:59,352 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 207 [2018-10-01 00:33:59,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:59,353 INFO L225 Difference]: With dead ends: 211 [2018-10-01 00:33:59,353 INFO L226 Difference]: Without dead ends: 209 [2018-10-01 00:33:59,353 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:33:59,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-01 00:33:59,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-10-01 00:33:59,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-01 00:33:59,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-10-01 00:33:59,356 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 207 [2018-10-01 00:33:59,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:59,356 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-10-01 00:33:59,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-10-01 00:33:59,356 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-10-01 00:33:59,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-01 00:33:59,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:59,357 INFO L375 BasicCegarLoop]: trace histogram [205, 1, 1, 1] [2018-10-01 00:33:59,357 INFO L423 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:59,357 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:59,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1803462168, now seen corresponding path program 205 times [2018-10-01 00:33:59,357 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:59,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:59,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:59,358 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:59,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:01,168 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:01,169 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:01,169 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:01,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:34:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:01,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:01,863 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:01,884 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:01,885 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207, 207] total 207 [2018-10-01 00:34:01,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-10-01 00:34:01,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-10-01 00:34:01,889 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:01,889 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 208 states. [2018-10-01 00:34:03,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:03,857 INFO L93 Difference]: Finished difference Result 212 states and 212 transitions. [2018-10-01 00:34:03,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-10-01 00:34:03,857 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 208 [2018-10-01 00:34:03,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:03,857 INFO L225 Difference]: With dead ends: 212 [2018-10-01 00:34:03,857 INFO L226 Difference]: Without dead ends: 210 [2018-10-01 00:34:03,858 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:34:03,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-10-01 00:34:03,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-10-01 00:34:03,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-10-01 00:34:03,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-10-01 00:34:03,861 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 208 [2018-10-01 00:34:03,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:03,861 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-10-01 00:34:03,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-10-01 00:34:03,862 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-10-01 00:34:03,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-01 00:34:03,862 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:03,863 INFO L375 BasicCegarLoop]: trace histogram [206, 1, 1, 1] [2018-10-01 00:34:03,863 INFO L423 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:03,863 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:03,863 INFO L82 PathProgramCache]: Analyzing trace with hash -72754335, now seen corresponding path program 206 times [2018-10-01 00:34:03,863 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:03,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:03,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:03,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:34:03,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:06,166 INFO L134 CoverageAnalysis]: Checked inductivity of 21321 backedges. 0 proven. 21321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:06,167 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:06,167 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:06,173 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:34:06,486 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:34:06,487 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:06,496 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:06,951 INFO L134 CoverageAnalysis]: Checked inductivity of 21321 backedges. 0 proven. 21321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:06,972 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:06,972 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208, 208] total 208 [2018-10-01 00:34:06,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-10-01 00:34:06,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-10-01 00:34:06,975 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:06,975 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 209 states. [2018-10-01 00:34:09,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:09,678 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-10-01 00:34:09,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-10-01 00:34:09,678 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 209 [2018-10-01 00:34:09,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:09,679 INFO L225 Difference]: With dead ends: 213 [2018-10-01 00:34:09,679 INFO L226 Difference]: Without dead ends: 211 [2018-10-01 00:34:09,679 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:34:09,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-01 00:34:09,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-01 00:34:09,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-01 00:34:09,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-10-01 00:34:09,682 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 209 [2018-10-01 00:34:09,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:09,682 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-10-01 00:34:09,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-10-01 00:34:09,682 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-10-01 00:34:09,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-01 00:34:09,683 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:09,683 INFO L375 BasicCegarLoop]: trace histogram [207, 1, 1, 1] [2018-10-01 00:34:09,683 INFO L423 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:09,683 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:09,683 INFO L82 PathProgramCache]: Analyzing trace with hash 2039580936, now seen corresponding path program 207 times [2018-10-01 00:34:09,683 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:09,684 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:09,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:09,684 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:34:09,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:11,538 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:11,538 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:11,538 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:11,545 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:34:12,265 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 105 check-sat command(s) [2018-10-01 00:34:12,266 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:12,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:12,676 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:12,698 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:12,698 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209, 209] total 209 [2018-10-01 00:34:12,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-10-01 00:34:12,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-10-01 00:34:12,701 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:12,701 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 210 states. [2018-10-01 00:34:16,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:16,424 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2018-10-01 00:34:16,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-10-01 00:34:16,424 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 210 [2018-10-01 00:34:16,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:16,424 INFO L225 Difference]: With dead ends: 214 [2018-10-01 00:34:16,425 INFO L226 Difference]: Without dead ends: 212 [2018-10-01 00:34:16,425 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:34:16,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-10-01 00:34:16,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-10-01 00:34:16,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-10-01 00:34:16,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2018-10-01 00:34:16,431 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 210 [2018-10-01 00:34:16,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:16,431 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2018-10-01 00:34:16,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-10-01 00:34:16,431 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2018-10-01 00:34:16,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-01 00:34:16,432 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:16,432 INFO L375 BasicCegarLoop]: trace histogram [208, 1, 1, 1] [2018-10-01 00:34:16,432 INFO L423 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:16,432 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:16,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1197502399, now seen corresponding path program 208 times [2018-10-01 00:34:16,432 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:16,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:16,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:16,433 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:34:16,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:18,199 INFO L134 CoverageAnalysis]: Checked inductivity of 21736 backedges. 0 proven. 21736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:18,199 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:18,199 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:18,207 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:34:18,513 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:34:18,514 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:18,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:18,913 INFO L134 CoverageAnalysis]: Checked inductivity of 21736 backedges. 0 proven. 21736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:18,934 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:18,934 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210, 210] total 210 [2018-10-01 00:34:18,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-10-01 00:34:18,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-10-01 00:34:18,938 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:18,938 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 211 states. [2018-10-01 00:34:22,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:22,919 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-10-01 00:34:22,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-10-01 00:34:22,919 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 211 [2018-10-01 00:34:22,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:22,920 INFO L225 Difference]: With dead ends: 215 [2018-10-01 00:34:22,920 INFO L226 Difference]: Without dead ends: 213 [2018-10-01 00:34:22,920 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:34:22,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-01 00:34:22,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-10-01 00:34:22,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-01 00:34:22,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-10-01 00:34:22,923 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 211 [2018-10-01 00:34:22,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:22,924 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-10-01 00:34:22,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-10-01 00:34:22,924 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-10-01 00:34:22,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-01 00:34:22,924 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:22,924 INFO L375 BasicCegarLoop]: trace histogram [209, 1, 1, 1] [2018-10-01 00:34:22,924 INFO L423 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:22,925 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:22,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1532129320, now seen corresponding path program 209 times [2018-10-01 00:34:22,925 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:22,925 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:22,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:22,925 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:34:22,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:24,674 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:24,674 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:24,674 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:24,681 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:34:25,353 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 106 check-sat command(s) [2018-10-01 00:34:25,353 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:25,366 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:25,795 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:25,795 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211, 211] total 211 [2018-10-01 00:34:25,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-10-01 00:34:25,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-10-01 00:34:25,799 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:25,799 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 212 states. [2018-10-01 00:34:28,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:28,870 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2018-10-01 00:34:28,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-10-01 00:34:28,870 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 212 [2018-10-01 00:34:28,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:28,870 INFO L225 Difference]: With dead ends: 216 [2018-10-01 00:34:28,870 INFO L226 Difference]: Without dead ends: 214 [2018-10-01 00:34:28,871 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:34:28,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-10-01 00:34:28,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-10-01 00:34:28,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-10-01 00:34:28,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2018-10-01 00:34:28,873 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 212 [2018-10-01 00:34:28,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:28,874 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2018-10-01 00:34:28,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-10-01 00:34:28,874 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2018-10-01 00:34:28,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-01 00:34:28,874 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:28,874 INFO L375 BasicCegarLoop]: trace histogram [210, 1, 1, 1] [2018-10-01 00:34:28,874 INFO L423 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:28,875 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:28,875 INFO L82 PathProgramCache]: Analyzing trace with hash 251366689, now seen corresponding path program 210 times [2018-10-01 00:34:28,875 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:28,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:28,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:28,875 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:34:28,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:30,614 INFO L134 CoverageAnalysis]: Checked inductivity of 22155 backedges. 0 proven. 22155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:30,614 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:30,614 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:30,621 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:34:31,274 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 106 check-sat command(s) [2018-10-01 00:34:31,275 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:31,286 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:31,945 INFO L134 CoverageAnalysis]: Checked inductivity of 22155 backedges. 0 proven. 22155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:31,967 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:31,967 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212, 212] total 212 [2018-10-01 00:34:31,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-10-01 00:34:31,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-10-01 00:34:31,970 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:31,970 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand 213 states. [2018-10-01 00:34:34,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:34,523 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-10-01 00:34:34,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-10-01 00:34:34,523 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 213 [2018-10-01 00:34:34,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:34,523 INFO L225 Difference]: With dead ends: 217 [2018-10-01 00:34:34,523 INFO L226 Difference]: Without dead ends: 215 [2018-10-01 00:34:34,524 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:34:34,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-01 00:34:34,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-10-01 00:34:34,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-01 00:34:34,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-10-01 00:34:34,526 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 213 [2018-10-01 00:34:34,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:34,527 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-10-01 00:34:34,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-10-01 00:34:34,527 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-10-01 00:34:34,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-01 00:34:34,527 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:34,527 INFO L375 BasicCegarLoop]: trace histogram [211, 1, 1, 1] [2018-10-01 00:34:34,528 INFO L423 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:34,528 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:34,528 INFO L82 PathProgramCache]: Analyzing trace with hash -797569208, now seen corresponding path program 211 times [2018-10-01 00:34:34,528 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:34,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:34,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:34,528 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:34:34,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:36,282 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:36,283 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:36,283 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:36,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:34:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:36,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:37,106 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:37,128 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:37,128 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213, 213] total 213 [2018-10-01 00:34:37,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-10-01 00:34:37,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-10-01 00:34:37,131 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:37,132 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 214 states. [2018-10-01 00:34:41,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:41,288 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2018-10-01 00:34:41,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-10-01 00:34:41,288 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 214 [2018-10-01 00:34:41,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:41,289 INFO L225 Difference]: With dead ends: 218 [2018-10-01 00:34:41,289 INFO L226 Difference]: Without dead ends: 216 [2018-10-01 00:34:41,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:34:41,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-10-01 00:34:41,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-10-01 00:34:41,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-10-01 00:34:41,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2018-10-01 00:34:41,292 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 214 [2018-10-01 00:34:41,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:41,292 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2018-10-01 00:34:41,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-10-01 00:34:41,292 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2018-10-01 00:34:41,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-01 00:34:41,293 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:41,293 INFO L375 BasicCegarLoop]: trace histogram [212, 1, 1, 1] [2018-10-01 00:34:41,293 INFO L423 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:41,293 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:41,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1045156353, now seen corresponding path program 212 times [2018-10-01 00:34:41,293 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:41,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:41,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:41,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:34:41,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 22578 backedges. 0 proven. 22578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:43,319 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:43,319 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:43,327 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:34:43,640 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:34:43,640 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:43,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:44,062 INFO L134 CoverageAnalysis]: Checked inductivity of 22578 backedges. 0 proven. 22578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:44,083 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:44,083 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214, 214] total 214 [2018-10-01 00:34:44,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-10-01 00:34:44,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-10-01 00:34:44,088 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:44,088 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 215 states. [2018-10-01 00:34:46,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:46,432 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-10-01 00:34:46,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-10-01 00:34:46,433 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 215 [2018-10-01 00:34:46,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:46,433 INFO L225 Difference]: With dead ends: 219 [2018-10-01 00:34:46,433 INFO L226 Difference]: Without dead ends: 217 [2018-10-01 00:34:46,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:34:46,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-01 00:34:46,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-10-01 00:34:46,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-10-01 00:34:46,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-10-01 00:34:46,436 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 215 [2018-10-01 00:34:46,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:46,436 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-10-01 00:34:46,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-10-01 00:34:46,437 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-10-01 00:34:46,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-01 00:34:46,437 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:46,437 INFO L375 BasicCegarLoop]: trace histogram [213, 1, 1, 1] [2018-10-01 00:34:46,437 INFO L423 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:46,437 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:46,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1959893400, now seen corresponding path program 213 times [2018-10-01 00:34:46,438 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:46,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:46,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:46,438 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:34:46,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:48,490 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:48,490 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:48,498 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:34:49,214 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 108 check-sat command(s) [2018-10-01 00:34:49,214 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:49,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:49,659 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:49,659 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215, 215] total 215 [2018-10-01 00:34:49,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-10-01 00:34:49,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-10-01 00:34:49,663 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:49,663 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 216 states. [2018-10-01 00:34:52,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:52,636 INFO L93 Difference]: Finished difference Result 220 states and 220 transitions. [2018-10-01 00:34:52,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-10-01 00:34:52,636 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 216 [2018-10-01 00:34:52,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:52,636 INFO L225 Difference]: With dead ends: 220 [2018-10-01 00:34:52,637 INFO L226 Difference]: Without dead ends: 218 [2018-10-01 00:34:52,637 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:34:52,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-10-01 00:34:52,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2018-10-01 00:34:52,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-10-01 00:34:52,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2018-10-01 00:34:52,640 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 216 [2018-10-01 00:34:52,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:52,640 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2018-10-01 00:34:52,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-10-01 00:34:52,640 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2018-10-01 00:34:52,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-01 00:34:52,640 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:52,641 INFO L375 BasicCegarLoop]: trace histogram [214, 1, 1, 1] [2018-10-01 00:34:52,641 INFO L423 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:52,641 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:52,641 INFO L82 PathProgramCache]: Analyzing trace with hash -627155231, now seen corresponding path program 214 times [2018-10-01 00:34:52,641 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:52,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:52,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:52,641 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:34:52,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:54,467 INFO L134 CoverageAnalysis]: Checked inductivity of 23005 backedges. 0 proven. 23005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:54,467 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:54,467 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:54,474 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:34:54,783 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:34:54,784 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:54,794 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:55,237 INFO L134 CoverageAnalysis]: Checked inductivity of 23005 backedges. 0 proven. 23005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:55,259 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:55,260 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216, 216] total 216 [2018-10-01 00:34:55,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-10-01 00:34:55,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-10-01 00:34:55,263 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:55,263 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand 217 states. [2018-10-01 00:34:59,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:59,391 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-01 00:34:59,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-10-01 00:34:59,391 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 217 [2018-10-01 00:34:59,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:59,391 INFO L225 Difference]: With dead ends: 221 [2018-10-01 00:34:59,391 INFO L226 Difference]: Without dead ends: 219 [2018-10-01 00:34:59,392 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:34:59,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-01 00:34:59,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-10-01 00:34:59,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-01 00:34:59,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-10-01 00:34:59,395 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 217 [2018-10-01 00:34:59,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:59,396 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-10-01 00:34:59,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-10-01 00:34:59,396 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-10-01 00:34:59,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-01 00:34:59,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:59,397 INFO L375 BasicCegarLoop]: trace histogram [215, 1, 1, 1] [2018-10-01 00:34:59,397 INFO L423 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:59,397 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:59,397 INFO L82 PathProgramCache]: Analyzing trace with hash 2033022344, now seen corresponding path program 215 times [2018-10-01 00:34:59,397 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:59,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:59,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:59,398 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:34:59,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:01,260 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:01,260 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:01,269 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:35:01,985 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 109 check-sat command(s) [2018-10-01 00:35:01,986 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:01,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:02,683 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:02,705 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:02,706 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217, 217] total 217 [2018-10-01 00:35:02,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-10-01 00:35:02,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-10-01 00:35:02,710 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:02,710 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 218 states. [2018-10-01 00:35:05,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:05,312 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2018-10-01 00:35:05,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-10-01 00:35:05,312 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 218 [2018-10-01 00:35:05,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:05,313 INFO L225 Difference]: With dead ends: 222 [2018-10-01 00:35:05,313 INFO L226 Difference]: Without dead ends: 220 [2018-10-01 00:35:05,313 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:35:05,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-10-01 00:35:05,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-10-01 00:35:05,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-10-01 00:35:05,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2018-10-01 00:35:05,316 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 218 [2018-10-01 00:35:05,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:05,316 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2018-10-01 00:35:05,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-10-01 00:35:05,316 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2018-10-01 00:35:05,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-01 00:35:05,317 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:05,317 INFO L375 BasicCegarLoop]: trace histogram [216, 1, 1, 1] [2018-10-01 00:35:05,317 INFO L423 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:05,317 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:05,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1400818751, now seen corresponding path program 216 times [2018-10-01 00:35:05,317 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:05,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:05,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:05,318 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:05,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:07,212 INFO L134 CoverageAnalysis]: Checked inductivity of 23436 backedges. 0 proven. 23436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:07,212 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:07,212 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:07,219 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:35:07,912 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2018-10-01 00:35:07,912 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:07,926 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 23436 backedges. 0 proven. 23436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:08,366 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:08,366 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [218, 218] total 218 [2018-10-01 00:35:08,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 219 states [2018-10-01 00:35:08,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2018-10-01 00:35:08,370 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:08,370 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 219 states. [2018-10-01 00:35:11,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:11,779 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-01 00:35:11,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-10-01 00:35:11,779 INFO L78 Accepts]: Start accepts. Automaton has 219 states. Word has length 219 [2018-10-01 00:35:11,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:11,780 INFO L225 Difference]: With dead ends: 223 [2018-10-01 00:35:11,780 INFO L226 Difference]: Without dead ends: 221 [2018-10-01 00:35:11,780 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:35:11,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-01 00:35:11,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-10-01 00:35:11,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-01 00:35:11,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-10-01 00:35:11,783 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 219 [2018-10-01 00:35:11,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:11,783 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-10-01 00:35:11,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 219 states. [2018-10-01 00:35:11,783 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-10-01 00:35:11,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-01 00:35:11,784 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:11,784 INFO L375 BasicCegarLoop]: trace histogram [217, 1, 1, 1] [2018-10-01 00:35:11,784 INFO L423 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:11,784 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:11,784 INFO L82 PathProgramCache]: Analyzing trace with hash -475710296, now seen corresponding path program 217 times [2018-10-01 00:35:11,784 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:11,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:11,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:11,785 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:11,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:13,917 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:13,917 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:13,917 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:13,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:35:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:14,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:14,701 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:14,702 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219, 219] total 219 [2018-10-01 00:35:14,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-10-01 00:35:14,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-10-01 00:35:14,705 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:14,705 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 220 states. [2018-10-01 00:35:17,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:17,877 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2018-10-01 00:35:17,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-10-01 00:35:17,878 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 220 [2018-10-01 00:35:17,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:17,878 INFO L225 Difference]: With dead ends: 224 [2018-10-01 00:35:17,878 INFO L226 Difference]: Without dead ends: 222 [2018-10-01 00:35:17,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:35:17,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-10-01 00:35:17,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2018-10-01 00:35:17,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-10-01 00:35:17,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2018-10-01 00:35:17,882 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 220 [2018-10-01 00:35:17,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:17,883 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2018-10-01 00:35:17,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-10-01 00:35:17,883 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2018-10-01 00:35:17,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-01 00:35:17,884 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:17,884 INFO L375 BasicCegarLoop]: trace histogram [218, 1, 1, 1] [2018-10-01 00:35:17,884 INFO L423 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:17,884 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:17,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1862119263, now seen corresponding path program 218 times [2018-10-01 00:35:17,884 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:17,884 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:17,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:17,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:35:17,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:19,871 INFO L134 CoverageAnalysis]: Checked inductivity of 23871 backedges. 0 proven. 23871 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:19,872 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:19,872 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:19,878 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:35:20,204 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:35:20,204 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:20,215 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 23871 backedges. 0 proven. 23871 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:20,658 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:20,659 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [220, 220] total 220 [2018-10-01 00:35:20,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 221 states [2018-10-01 00:35:20,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2018-10-01 00:35:20,662 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:20,662 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 221 states. [2018-10-01 00:35:24,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:24,052 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-10-01 00:35:24,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-10-01 00:35:24,052 INFO L78 Accepts]: Start accepts. Automaton has 221 states. Word has length 221 [2018-10-01 00:35:24,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:24,052 INFO L225 Difference]: With dead ends: 225 [2018-10-01 00:35:24,052 INFO L226 Difference]: Without dead ends: 223 [2018-10-01 00:35:24,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:35:24,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-01 00:35:24,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-10-01 00:35:24,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-01 00:35:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-01 00:35:24,056 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 221 [2018-10-01 00:35:24,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:24,057 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-01 00:35:24,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 221 states. [2018-10-01 00:35:24,057 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-01 00:35:24,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-01 00:35:24,057 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:24,057 INFO L375 BasicCegarLoop]: trace histogram [219, 1, 1, 1] [2018-10-01 00:35:24,057 INFO L423 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:24,057 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:24,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1891124280, now seen corresponding path program 219 times [2018-10-01 00:35:24,058 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:24,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:24,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:24,058 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:24,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:25,982 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:25,982 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:25,982 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:25,989 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:35:26,742 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 111 check-sat command(s) [2018-10-01 00:35:26,742 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:26,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:27,187 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:27,209 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:27,209 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [221, 221] total 221 [2018-10-01 00:35:27,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-10-01 00:35:27,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-10-01 00:35:27,214 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:27,214 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 222 states. [2018-10-01 00:35:31,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:31,552 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2018-10-01 00:35:31,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-10-01 00:35:31,552 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 222 [2018-10-01 00:35:31,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:31,553 INFO L225 Difference]: With dead ends: 226 [2018-10-01 00:35:31,553 INFO L226 Difference]: Without dead ends: 224 [2018-10-01 00:35:31,553 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:35:31,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-10-01 00:35:31,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2018-10-01 00:35:31,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-10-01 00:35:31,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-10-01 00:35:31,556 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 222 [2018-10-01 00:35:31,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:31,556 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-10-01 00:35:31,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-10-01 00:35:31,556 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-10-01 00:35:31,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-01 00:35:31,556 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:31,557 INFO L375 BasicCegarLoop]: trace histogram [220, 1, 1, 1] [2018-10-01 00:35:31,557 INFO L423 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:31,557 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:31,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1504687489, now seen corresponding path program 220 times [2018-10-01 00:35:31,557 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:31,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:31,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:31,558 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:31,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:33,597 INFO L134 CoverageAnalysis]: Checked inductivity of 24310 backedges. 0 proven. 24310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:33,597 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:33,597 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:33,642 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:35:33,972 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:35:33,972 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:33,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:34,409 INFO L134 CoverageAnalysis]: Checked inductivity of 24310 backedges. 0 proven. 24310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:34,431 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:34,431 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [222, 222] total 222 [2018-10-01 00:35:34,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 223 states [2018-10-01 00:35:34,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 223 interpolants. [2018-10-01 00:35:34,434 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:34,435 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 223 states. [2018-10-01 00:35:36,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:36,955 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-10-01 00:35:36,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2018-10-01 00:35:36,955 INFO L78 Accepts]: Start accepts. Automaton has 223 states. Word has length 223 [2018-10-01 00:35:36,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:36,956 INFO L225 Difference]: With dead ends: 227 [2018-10-01 00:35:36,956 INFO L226 Difference]: Without dead ends: 225 [2018-10-01 00:35:36,956 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:35:36,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-10-01 00:35:36,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-10-01 00:35:36,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-01 00:35:36,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-10-01 00:35:36,959 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 223 [2018-10-01 00:35:36,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:36,959 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-10-01 00:35:36,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 223 states. [2018-10-01 00:35:36,960 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-10-01 00:35:36,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-01 00:35:36,960 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:36,960 INFO L375 BasicCegarLoop]: trace histogram [221, 1, 1, 1] [2018-10-01 00:35:36,960 INFO L423 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:36,960 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:36,961 INFO L82 PathProgramCache]: Analyzing trace with hash -599330072, now seen corresponding path program 221 times [2018-10-01 00:35:36,961 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:36,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:36,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:36,961 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:36,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:39,103 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:39,104 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:39,104 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:39,111 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:35:39,858 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 112 check-sat command(s) [2018-10-01 00:35:39,859 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:39,872 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:40,358 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:40,380 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:40,380 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223, 223] total 223 [2018-10-01 00:35:40,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-10-01 00:35:40,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-10-01 00:35:40,384 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:40,384 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 224 states. [2018-10-01 00:35:43,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:43,951 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2018-10-01 00:35:43,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-10-01 00:35:43,952 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 224 [2018-10-01 00:35:43,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:43,952 INFO L225 Difference]: With dead ends: 228 [2018-10-01 00:35:43,952 INFO L226 Difference]: Without dead ends: 226 [2018-10-01 00:35:43,953 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:35:43,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-10-01 00:35:43,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-10-01 00:35:43,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-10-01 00:35:43,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-10-01 00:35:43,955 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 224 [2018-10-01 00:35:43,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:43,956 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-10-01 00:35:43,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-10-01 00:35:43,956 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-10-01 00:35:43,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-01 00:35:43,956 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:43,956 INFO L375 BasicCegarLoop]: trace histogram [222, 1, 1, 1] [2018-10-01 00:35:43,957 INFO L423 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:43,957 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:43,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1399365023, now seen corresponding path program 222 times [2018-10-01 00:35:43,957 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:43,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:43,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:43,957 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:43,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:45,898 INFO L134 CoverageAnalysis]: Checked inductivity of 24753 backedges. 0 proven. 24753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:45,898 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:45,898 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:45,905 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:35:46,622 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 112 check-sat command(s) [2018-10-01 00:35:46,622 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:46,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:47,069 INFO L134 CoverageAnalysis]: Checked inductivity of 24753 backedges. 0 proven. 24753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:47,092 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:47,092 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [224, 224] total 224 [2018-10-01 00:35:47,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 225 states [2018-10-01 00:35:47,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2018-10-01 00:35:47,096 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:47,096 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 225 states. [2018-10-01 00:35:51,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:51,234 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-10-01 00:35:51,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-10-01 00:35:51,234 INFO L78 Accepts]: Start accepts. Automaton has 225 states. Word has length 225 [2018-10-01 00:35:51,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:51,235 INFO L225 Difference]: With dead ends: 229 [2018-10-01 00:35:51,235 INFO L226 Difference]: Without dead ends: 227 [2018-10-01 00:35:51,235 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:35:51,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-01 00:35:51,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-10-01 00:35:51,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-01 00:35:51,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-10-01 00:35:51,238 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 225 [2018-10-01 00:35:51,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:51,238 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-10-01 00:35:51,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 225 states. [2018-10-01 00:35:51,238 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-10-01 00:35:51,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-01 00:35:51,239 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:51,239 INFO L375 BasicCegarLoop]: trace histogram [223, 1, 1, 1] [2018-10-01 00:35:51,239 INFO L423 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:51,239 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:51,239 INFO L82 PathProgramCache]: Analyzing trace with hash -430644728, now seen corresponding path program 223 times [2018-10-01 00:35:51,239 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:51,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:51,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:51,240 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:51,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:53,184 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:53,185 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:53,185 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:53,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:35:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:53,538 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:54,042 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:54,063 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:54,064 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [225, 225] total 225 [2018-10-01 00:35:54,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 226 states [2018-10-01 00:35:54,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2018-10-01 00:35:54,067 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:54,067 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 226 states. [2018-10-01 00:35:58,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:58,763 INFO L93 Difference]: Finished difference Result 230 states and 230 transitions. [2018-10-01 00:35:58,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2018-10-01 00:35:58,763 INFO L78 Accepts]: Start accepts. Automaton has 226 states. Word has length 226 [2018-10-01 00:35:58,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:58,764 INFO L225 Difference]: With dead ends: 230 [2018-10-01 00:35:58,764 INFO L226 Difference]: Without dead ends: 228 [2018-10-01 00:35:58,764 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:35:58,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-10-01 00:35:58,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-10-01 00:35:58,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-10-01 00:35:58,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2018-10-01 00:35:58,767 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 226 [2018-10-01 00:35:58,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:58,767 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2018-10-01 00:35:58,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 226 states. [2018-10-01 00:35:58,767 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2018-10-01 00:35:58,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-01 00:35:58,768 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:58,768 INFO L375 BasicCegarLoop]: trace histogram [224, 1, 1, 1] [2018-10-01 00:35:58,768 INFO L423 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:58,768 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:58,769 INFO L82 PathProgramCache]: Analyzing trace with hash -465086655, now seen corresponding path program 224 times [2018-10-01 00:35:58,769 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:58,769 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:58,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:58,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:35:58,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:00,749 INFO L134 CoverageAnalysis]: Checked inductivity of 25200 backedges. 0 proven. 25200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:00,749 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:00,749 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:00,756 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:36:01,109 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:36:01,110 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:01,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:01,675 INFO L134 CoverageAnalysis]: Checked inductivity of 25200 backedges. 0 proven. 25200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:01,697 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:01,697 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [226, 226] total 226 [2018-10-01 00:36:01,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 227 states [2018-10-01 00:36:01,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 227 interpolants. [2018-10-01 00:36:01,703 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:01,703 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand 227 states. [2018-10-01 00:36:05,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:05,201 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-10-01 00:36:05,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2018-10-01 00:36:05,201 INFO L78 Accepts]: Start accepts. Automaton has 227 states. Word has length 227 [2018-10-01 00:36:05,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:05,202 INFO L225 Difference]: With dead ends: 231 [2018-10-01 00:36:05,202 INFO L226 Difference]: Without dead ends: 229 [2018-10-01 00:36:05,202 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:36:05,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-10-01 00:36:05,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-10-01 00:36:05,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-10-01 00:36:05,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-10-01 00:36:05,205 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 227 [2018-10-01 00:36:05,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:05,205 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-10-01 00:36:05,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 227 states. [2018-10-01 00:36:05,205 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-10-01 00:36:05,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-01 00:36:05,206 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:05,206 INFO L375 BasicCegarLoop]: trace histogram [225, 1, 1, 1] [2018-10-01 00:36:05,206 INFO L423 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:05,206 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:05,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1532786392, now seen corresponding path program 225 times [2018-10-01 00:36:05,206 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:05,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:05,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:05,207 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:05,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:07,198 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:07,199 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:07,199 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:07,247 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:36:08,023 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 114 check-sat command(s) [2018-10-01 00:36:08,023 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:08,034 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:08,475 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:08,499 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:08,499 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [227, 227] total 227 [2018-10-01 00:36:08,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-10-01 00:36:08,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-10-01 00:36:08,503 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:08,503 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 228 states. [2018-10-01 00:36:11,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:11,120 INFO L93 Difference]: Finished difference Result 232 states and 232 transitions. [2018-10-01 00:36:11,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2018-10-01 00:36:11,120 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 228 [2018-10-01 00:36:11,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:11,121 INFO L225 Difference]: With dead ends: 232 [2018-10-01 00:36:11,121 INFO L226 Difference]: Without dead ends: 230 [2018-10-01 00:36:11,121 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:36:11,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-10-01 00:36:11,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2018-10-01 00:36:11,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-10-01 00:36:11,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2018-10-01 00:36:11,124 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 228 [2018-10-01 00:36:11,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:11,124 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2018-10-01 00:36:11,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-10-01 00:36:11,124 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2018-10-01 00:36:11,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-10-01 00:36:11,125 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:11,125 INFO L375 BasicCegarLoop]: trace histogram [226, 1, 1, 1] [2018-10-01 00:36:11,125 INFO L423 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:11,125 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:11,125 INFO L82 PathProgramCache]: Analyzing trace with hash -271739871, now seen corresponding path program 226 times [2018-10-01 00:36:11,125 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:11,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:11,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:11,126 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:11,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 25651 backedges. 0 proven. 25651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:13,226 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:13,226 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:13,240 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:36:13,579 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:36:13,579 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:13,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:14,264 INFO L134 CoverageAnalysis]: Checked inductivity of 25651 backedges. 0 proven. 25651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:14,286 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:14,287 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [228, 228] total 228 [2018-10-01 00:36:14,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 229 states [2018-10-01 00:36:14,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 229 interpolants. [2018-10-01 00:36:14,291 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:14,291 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 229 states. [2018-10-01 00:36:17,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:17,427 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-10-01 00:36:17,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2018-10-01 00:36:17,427 INFO L78 Accepts]: Start accepts. Automaton has 229 states. Word has length 229 [2018-10-01 00:36:17,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:17,428 INFO L225 Difference]: With dead ends: 233 [2018-10-01 00:36:17,428 INFO L226 Difference]: Without dead ends: 231 [2018-10-01 00:36:17,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:36:17,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-01 00:36:17,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-10-01 00:36:17,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-01 00:36:17,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-10-01 00:36:17,432 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 229 [2018-10-01 00:36:17,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:17,432 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-10-01 00:36:17,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has 229 states. [2018-10-01 00:36:17,432 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-10-01 00:36:17,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-01 00:36:17,433 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:17,433 INFO L375 BasicCegarLoop]: trace histogram [227, 1, 1, 1] [2018-10-01 00:36:17,433 INFO L423 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:17,434 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:17,434 INFO L82 PathProgramCache]: Analyzing trace with hash 165996616, now seen corresponding path program 227 times [2018-10-01 00:36:17,434 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:17,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:17,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:17,434 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:17,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:19,579 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:19,579 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:19,579 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:19,589 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:36:20,377 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 115 check-sat command(s) [2018-10-01 00:36:20,378 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:20,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:20,931 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:20,931 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [229, 229] total 229 [2018-10-01 00:36:20,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 230 states [2018-10-01 00:36:20,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2018-10-01 00:36:20,935 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:20,935 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 230 states. [2018-10-01 00:36:23,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:23,337 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-10-01 00:36:23,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2018-10-01 00:36:23,337 INFO L78 Accepts]: Start accepts. Automaton has 230 states. Word has length 230 [2018-10-01 00:36:23,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:23,338 INFO L225 Difference]: With dead ends: 234 [2018-10-01 00:36:23,338 INFO L226 Difference]: Without dead ends: 232 [2018-10-01 00:36:23,338 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:36:23,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-10-01 00:36:23,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-10-01 00:36:23,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-10-01 00:36:23,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2018-10-01 00:36:23,342 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 230 [2018-10-01 00:36:23,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:23,342 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2018-10-01 00:36:23,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 230 states. [2018-10-01 00:36:23,342 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2018-10-01 00:36:23,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-10-01 00:36:23,343 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:23,343 INFO L375 BasicCegarLoop]: trace histogram [228, 1, 1, 1] [2018-10-01 00:36:23,343 INFO L423 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:23,343 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:23,343 INFO L82 PathProgramCache]: Analyzing trace with hash 850925825, now seen corresponding path program 228 times [2018-10-01 00:36:23,343 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:23,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:23,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:23,344 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:23,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 26106 backedges. 0 proven. 26106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:25,658 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:25,658 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:25,665 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:36:26,422 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 115 check-sat command(s) [2018-10-01 00:36:26,422 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:26,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:26,878 INFO L134 CoverageAnalysis]: Checked inductivity of 26106 backedges. 0 proven. 26106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:26,900 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:26,901 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [230, 230] total 230 [2018-10-01 00:36:26,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 231 states [2018-10-01 00:36:26,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 231 interpolants. [2018-10-01 00:36:26,905 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:26,905 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand 231 states. [2018-10-01 00:36:30,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:30,741 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-10-01 00:36:30,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2018-10-01 00:36:30,741 INFO L78 Accepts]: Start accepts. Automaton has 231 states. Word has length 231 [2018-10-01 00:36:30,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:30,741 INFO L225 Difference]: With dead ends: 235 [2018-10-01 00:36:30,741 INFO L226 Difference]: Without dead ends: 233 [2018-10-01 00:36:30,742 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:36:30,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-10-01 00:36:30,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-10-01 00:36:30,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-10-01 00:36:30,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-10-01 00:36:30,744 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 231 [2018-10-01 00:36:30,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:30,745 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-10-01 00:36:30,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 231 states. [2018-10-01 00:36:30,745 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-10-01 00:36:30,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-01 00:36:30,745 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:30,745 INFO L375 BasicCegarLoop]: trace histogram [229, 1, 1, 1] [2018-10-01 00:36:30,746 INFO L423 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:30,746 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:30,746 INFO L82 PathProgramCache]: Analyzing trace with hash 608894824, now seen corresponding path program 229 times [2018-10-01 00:36:30,746 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:30,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:30,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:30,746 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:30,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:32,804 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:32,804 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:32,804 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:32,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:36:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:33,164 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:33,639 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:33,639 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [231, 231] total 231 [2018-10-01 00:36:33,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 232 states [2018-10-01 00:36:33,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2018-10-01 00:36:33,644 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:33,644 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 232 states. [2018-10-01 00:36:35,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:35,964 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2018-10-01 00:36:35,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2018-10-01 00:36:35,964 INFO L78 Accepts]: Start accepts. Automaton has 232 states. Word has length 232 [2018-10-01 00:36:35,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:35,965 INFO L225 Difference]: With dead ends: 236 [2018-10-01 00:36:35,965 INFO L226 Difference]: Without dead ends: 234 [2018-10-01 00:36:35,965 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:36:35,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-10-01 00:36:35,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2018-10-01 00:36:35,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-10-01 00:36:35,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2018-10-01 00:36:35,968 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 232 [2018-10-01 00:36:35,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:35,968 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2018-10-01 00:36:35,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 232 states. [2018-10-01 00:36:35,968 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2018-10-01 00:36:35,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-01 00:36:35,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:35,969 INFO L375 BasicCegarLoop]: trace histogram [230, 1, 1, 1] [2018-10-01 00:36:35,969 INFO L423 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:35,969 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:35,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1695868385, now seen corresponding path program 230 times [2018-10-01 00:36:35,970 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:35,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:35,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:35,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:36:35,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 26565 backedges. 0 proven. 26565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:38,043 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:38,043 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:38,051 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:36:38,395 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:36:38,395 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:38,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:38,850 INFO L134 CoverageAnalysis]: Checked inductivity of 26565 backedges. 0 proven. 26565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:38,873 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:38,873 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [232, 232] total 232 [2018-10-01 00:36:38,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 233 states [2018-10-01 00:36:38,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 233 interpolants. [2018-10-01 00:36:38,877 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:38,877 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand 233 states. [2018-10-01 00:36:42,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:42,552 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-10-01 00:36:42,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2018-10-01 00:36:42,553 INFO L78 Accepts]: Start accepts. Automaton has 233 states. Word has length 233 [2018-10-01 00:36:42,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:42,553 INFO L225 Difference]: With dead ends: 237 [2018-10-01 00:36:42,553 INFO L226 Difference]: Without dead ends: 235 [2018-10-01 00:36:42,553 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:36:42,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-01 00:36:42,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-10-01 00:36:42,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-01 00:36:42,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-10-01 00:36:42,557 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 233 [2018-10-01 00:36:42,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:42,557 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-10-01 00:36:42,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 233 states. [2018-10-01 00:36:42,557 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-10-01 00:36:42,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-01 00:36:42,558 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:42,558 INFO L375 BasicCegarLoop]: trace histogram [231, 1, 1, 1] [2018-10-01 00:36:42,558 INFO L423 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:42,558 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:42,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1032310408, now seen corresponding path program 231 times [2018-10-01 00:36:42,558 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:42,558 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:42,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:42,558 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:42,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:44,715 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:44,715 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:44,715 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:44,722 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:36:45,548 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 117 check-sat command(s) [2018-10-01 00:36:45,548 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:45,559 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:46,032 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:46,055 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:46,055 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [233, 233] total 233 [2018-10-01 00:36:46,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 234 states [2018-10-01 00:36:46,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 234 interpolants. [2018-10-01 00:36:46,060 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:46,061 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 234 states. [2018-10-01 00:36:49,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:49,224 INFO L93 Difference]: Finished difference Result 238 states and 238 transitions. [2018-10-01 00:36:49,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2018-10-01 00:36:49,225 INFO L78 Accepts]: Start accepts. Automaton has 234 states. Word has length 234 [2018-10-01 00:36:49,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:49,225 INFO L225 Difference]: With dead ends: 238 [2018-10-01 00:36:49,225 INFO L226 Difference]: Without dead ends: 236 [2018-10-01 00:36:49,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:36:49,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-10-01 00:36:49,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-10-01 00:36:49,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-10-01 00:36:49,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-10-01 00:36:49,228 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 234 [2018-10-01 00:36:49,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:49,228 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-10-01 00:36:49,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 234 states. [2018-10-01 00:36:49,229 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-10-01 00:36:49,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-01 00:36:49,229 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:49,229 INFO L375 BasicCegarLoop]: trace histogram [232, 1, 1, 1] [2018-10-01 00:36:49,229 INFO L423 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:49,229 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:49,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1936849601, now seen corresponding path program 232 times [2018-10-01 00:36:49,230 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:49,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:49,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:49,230 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:49,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:51,545 INFO L134 CoverageAnalysis]: Checked inductivity of 27028 backedges. 0 proven. 27028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:51,545 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:51,545 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:51,553 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:36:51,894 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:36:51,895 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:51,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:52,354 INFO L134 CoverageAnalysis]: Checked inductivity of 27028 backedges. 0 proven. 27028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:52,376 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:52,377 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [234, 234] total 234 [2018-10-01 00:36:52,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 235 states [2018-10-01 00:36:52,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 235 interpolants. [2018-10-01 00:36:52,381 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:52,381 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 235 states. [2018-10-01 00:36:56,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:56,900 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-10-01 00:36:56,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2018-10-01 00:36:56,900 INFO L78 Accepts]: Start accepts. Automaton has 235 states. Word has length 235 [2018-10-01 00:36:56,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:56,901 INFO L225 Difference]: With dead ends: 239 [2018-10-01 00:36:56,901 INFO L226 Difference]: Without dead ends: 237 [2018-10-01 00:36:56,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:36:56,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-10-01 00:36:56,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-10-01 00:36:56,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-10-01 00:36:56,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-10-01 00:36:56,904 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 235 [2018-10-01 00:36:56,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:56,904 INFO L480 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-10-01 00:36:56,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 235 states. [2018-10-01 00:36:56,904 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-10-01 00:36:56,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-01 00:36:56,905 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:56,905 INFO L375 BasicCegarLoop]: trace histogram [233, 1, 1, 1] [2018-10-01 00:36:56,905 INFO L423 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:56,905 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:56,905 INFO L82 PathProgramCache]: Analyzing trace with hash -87206488, now seen corresponding path program 233 times [2018-10-01 00:36:56,905 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:56,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:56,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:56,906 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:56,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:59,059 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:59,059 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:59,059 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:59,067 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:36:59,893 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 118 check-sat command(s) [2018-10-01 00:36:59,894 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:59,909 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:00,454 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:00,478 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:00,478 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [235, 235] total 235 [2018-10-01 00:37:00,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 236 states [2018-10-01 00:37:00,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2018-10-01 00:37:00,482 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:00,482 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 236 states. [2018-10-01 00:37:05,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:05,918 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2018-10-01 00:37:05,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2018-10-01 00:37:05,918 INFO L78 Accepts]: Start accepts. Automaton has 236 states. Word has length 236 [2018-10-01 00:37:05,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:05,918 INFO L225 Difference]: With dead ends: 240 [2018-10-01 00:37:05,918 INFO L226 Difference]: Without dead ends: 238 [2018-10-01 00:37:05,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:37:05,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-10-01 00:37:05,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-10-01 00:37:05,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-10-01 00:37:05,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2018-10-01 00:37:05,922 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 236 [2018-10-01 00:37:05,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:05,922 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2018-10-01 00:37:05,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 236 states. [2018-10-01 00:37:05,922 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2018-10-01 00:37:05,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-10-01 00:37:05,922 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:05,923 INFO L375 BasicCegarLoop]: trace histogram [234, 1, 1, 1] [2018-10-01 00:37:05,923 INFO L423 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:05,923 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:05,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1591564193, now seen corresponding path program 234 times [2018-10-01 00:37:05,923 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:05,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:05,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:05,923 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:05,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:08,058 INFO L134 CoverageAnalysis]: Checked inductivity of 27495 backedges. 0 proven. 27495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:08,058 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:08,058 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:08,067 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:37:08,860 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 118 check-sat command(s) [2018-10-01 00:37:08,861 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:08,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:09,390 INFO L134 CoverageAnalysis]: Checked inductivity of 27495 backedges. 0 proven. 27495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:09,412 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:09,412 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [236, 236] total 236 [2018-10-01 00:37:09,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 237 states [2018-10-01 00:37:09,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 237 interpolants. [2018-10-01 00:37:09,416 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:09,416 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand 237 states. [2018-10-01 00:37:13,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:13,037 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-10-01 00:37:13,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2018-10-01 00:37:13,037 INFO L78 Accepts]: Start accepts. Automaton has 237 states. Word has length 237 [2018-10-01 00:37:13,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:13,038 INFO L225 Difference]: With dead ends: 241 [2018-10-01 00:37:13,038 INFO L226 Difference]: Without dead ends: 239 [2018-10-01 00:37:13,038 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:37:13,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-10-01 00:37:13,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-10-01 00:37:13,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-01 00:37:13,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-10-01 00:37:13,042 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 237 [2018-10-01 00:37:13,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:13,042 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-10-01 00:37:13,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 237 states. [2018-10-01 00:37:13,042 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-10-01 00:37:13,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-01 00:37:13,043 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:13,043 INFO L375 BasicCegarLoop]: trace histogram [235, 1, 1, 1] [2018-10-01 00:37:13,043 INFO L423 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:13,044 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:13,044 INFO L82 PathProgramCache]: Analyzing trace with hash 2093847752, now seen corresponding path program 235 times [2018-10-01 00:37:13,044 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:13,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:13,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:13,044 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:13,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:15,261 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:15,261 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:15,261 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:15,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:37:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:15,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:16,143 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:16,165 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:16,165 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [237, 237] total 237 [2018-10-01 00:37:16,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 238 states [2018-10-01 00:37:16,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 238 interpolants. [2018-10-01 00:37:16,169 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:16,169 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 238 states. [2018-10-01 00:37:20,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:20,268 INFO L93 Difference]: Finished difference Result 242 states and 242 transitions. [2018-10-01 00:37:20,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2018-10-01 00:37:20,268 INFO L78 Accepts]: Start accepts. Automaton has 238 states. Word has length 238 [2018-10-01 00:37:20,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:20,269 INFO L225 Difference]: With dead ends: 242 [2018-10-01 00:37:20,269 INFO L226 Difference]: Without dead ends: 240 [2018-10-01 00:37:20,269 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:37:20,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-10-01 00:37:20,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2018-10-01 00:37:20,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-10-01 00:37:20,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 240 transitions. [2018-10-01 00:37:20,273 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 240 transitions. Word has length 238 [2018-10-01 00:37:20,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:20,273 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 240 transitions. [2018-10-01 00:37:20,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 238 states. [2018-10-01 00:37:20,273 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 240 transitions. [2018-10-01 00:37:20,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-10-01 00:37:20,274 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:20,274 INFO L375 BasicCegarLoop]: trace histogram [236, 1, 1, 1] [2018-10-01 00:37:20,274 INFO L423 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:20,274 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:20,274 INFO L82 PathProgramCache]: Analyzing trace with hash 484768897, now seen corresponding path program 236 times [2018-10-01 00:37:20,275 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:20,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:20,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:20,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:37:20,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:22,552 INFO L134 CoverageAnalysis]: Checked inductivity of 27966 backedges. 0 proven. 27966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:22,552 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:22,552 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:22,559 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:37:22,909 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:37:22,909 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:22,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:23,430 INFO L134 CoverageAnalysis]: Checked inductivity of 27966 backedges. 0 proven. 27966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:23,451 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:23,452 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [238, 238] total 238 [2018-10-01 00:37:23,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 239 states [2018-10-01 00:37:23,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 239 interpolants. [2018-10-01 00:37:23,456 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:23,456 INFO L87 Difference]: Start difference. First operand 240 states and 240 transitions. Second operand 239 states. [2018-10-01 00:37:27,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:27,831 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-10-01 00:37:27,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2018-10-01 00:37:27,831 INFO L78 Accepts]: Start accepts. Automaton has 239 states. Word has length 239 [2018-10-01 00:37:27,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:27,831 INFO L225 Difference]: With dead ends: 243 [2018-10-01 00:37:27,832 INFO L226 Difference]: Without dead ends: 241 [2018-10-01 00:37:27,832 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:37:27,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-10-01 00:37:27,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-10-01 00:37:27,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-01 00:37:27,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-10-01 00:37:27,835 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 239 [2018-10-01 00:37:27,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:27,835 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-10-01 00:37:27,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 239 states. [2018-10-01 00:37:27,835 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-10-01 00:37:27,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-01 00:37:27,836 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:27,836 INFO L375 BasicCegarLoop]: trace histogram [237, 1, 1, 1] [2018-10-01 00:37:27,836 INFO L423 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:27,836 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:27,836 INFO L82 PathProgramCache]: Analyzing trace with hash 2142931944, now seen corresponding path program 237 times [2018-10-01 00:37:27,836 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:27,836 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:27,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:27,837 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:27,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:29,989 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:29,990 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:29,990 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:29,998 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:37:30,865 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 120 check-sat command(s) [2018-10-01 00:37:30,866 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:30,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:31,360 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:31,382 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:31,382 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [239, 239] total 239 [2018-10-01 00:37:31,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 240 states [2018-10-01 00:37:31,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2018-10-01 00:37:31,387 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:31,387 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 240 states. [2018-10-01 00:37:35,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:35,576 INFO L93 Difference]: Finished difference Result 244 states and 244 transitions. [2018-10-01 00:37:35,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2018-10-01 00:37:35,576 INFO L78 Accepts]: Start accepts. Automaton has 240 states. Word has length 240 [2018-10-01 00:37:35,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:35,577 INFO L225 Difference]: With dead ends: 244 [2018-10-01 00:37:35,577 INFO L226 Difference]: Without dead ends: 242 [2018-10-01 00:37:35,577 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:37:35,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-10-01 00:37:35,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2018-10-01 00:37:35,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-10-01 00:37:35,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2018-10-01 00:37:35,580 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 240 [2018-10-01 00:37:35,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:35,580 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2018-10-01 00:37:35,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 240 states. [2018-10-01 00:37:35,580 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2018-10-01 00:37:35,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-01 00:37:35,581 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:35,581 INFO L375 BasicCegarLoop]: trace histogram [238, 1, 1, 1] [2018-10-01 00:37:35,581 INFO L423 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:35,581 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:35,581 INFO L82 PathProgramCache]: Analyzing trace with hash 2006378849, now seen corresponding path program 238 times [2018-10-01 00:37:35,581 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:35,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:35,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:35,582 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:35,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:37,909 INFO L134 CoverageAnalysis]: Checked inductivity of 28441 backedges. 0 proven. 28441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:37,909 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:37,909 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:37,916 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:37:38,267 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:37:38,267 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:38,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:38,740 INFO L134 CoverageAnalysis]: Checked inductivity of 28441 backedges. 0 proven. 28441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:38,761 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:38,762 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [240, 240] total 240 [2018-10-01 00:37:38,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 241 states [2018-10-01 00:37:38,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 241 interpolants. [2018-10-01 00:37:38,766 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:38,766 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand 241 states. [2018-10-01 00:37:42,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:42,997 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-10-01 00:37:42,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2018-10-01 00:37:42,997 INFO L78 Accepts]: Start accepts. Automaton has 241 states. Word has length 241 [2018-10-01 00:37:42,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:42,998 INFO L225 Difference]: With dead ends: 245 [2018-10-01 00:37:42,998 INFO L226 Difference]: Without dead ends: 243 [2018-10-01 00:37:42,998 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:37:42,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-01 00:37:43,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-10-01 00:37:43,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-10-01 00:37:43,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-10-01 00:37:43,001 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 241 [2018-10-01 00:37:43,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:43,001 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-10-01 00:37:43,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 241 states. [2018-10-01 00:37:43,001 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-10-01 00:37:43,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-01 00:37:43,002 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:43,002 INFO L375 BasicCegarLoop]: trace histogram [239, 1, 1, 1] [2018-10-01 00:37:43,002 INFO L423 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:43,002 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:43,002 INFO L82 PathProgramCache]: Analyzing trace with hash 2068200200, now seen corresponding path program 239 times [2018-10-01 00:37:43,003 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:43,003 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:43,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:43,003 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:43,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:45,203 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:45,203 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:45,203 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:45,211 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:37:46,056 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 121 check-sat command(s) [2018-10-01 00:37:46,056 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:46,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:46,626 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:46,649 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:46,650 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [241, 241] total 241 [2018-10-01 00:37:46,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 242 states [2018-10-01 00:37:46,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 242 interpolants. [2018-10-01 00:37:46,654 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:46,654 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 242 states. [2018-10-01 00:37:52,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:52,243 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2018-10-01 00:37:52,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2018-10-01 00:37:52,244 INFO L78 Accepts]: Start accepts. Automaton has 242 states. Word has length 242 [2018-10-01 00:37:52,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:52,244 INFO L225 Difference]: With dead ends: 246 [2018-10-01 00:37:52,244 INFO L226 Difference]: Without dead ends: 244 [2018-10-01 00:37:52,245 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:37:52,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-10-01 00:37:52,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2018-10-01 00:37:52,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-10-01 00:37:52,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2018-10-01 00:37:52,248 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 242 [2018-10-01 00:37:52,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:52,248 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2018-10-01 00:37:52,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 242 states. [2018-10-01 00:37:52,248 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2018-10-01 00:37:52,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-01 00:37:52,248 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:52,249 INFO L375 BasicCegarLoop]: trace histogram [240, 1, 1, 1] [2018-10-01 00:37:52,249 INFO L423 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:52,249 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:52,249 INFO L82 PathProgramCache]: Analyzing trace with hash -310305215, now seen corresponding path program 240 times [2018-10-01 00:37:52,249 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:52,249 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:52,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:52,250 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:52,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:54,527 INFO L134 CoverageAnalysis]: Checked inductivity of 28920 backedges. 0 proven. 28920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:54,528 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:54,528 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:54,534 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:37:55,362 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 121 check-sat command(s) [2018-10-01 00:37:55,362 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:55,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:55,847 INFO L134 CoverageAnalysis]: Checked inductivity of 28920 backedges. 0 proven. 28920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:55,870 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:55,871 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [242, 242] total 242 [2018-10-01 00:37:55,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 243 states [2018-10-01 00:37:55,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 243 interpolants. [2018-10-01 00:37:55,876 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:55,876 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand 243 states. [2018-10-01 00:37:58,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:58,728 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-10-01 00:37:58,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 243 states. [2018-10-01 00:37:58,728 INFO L78 Accepts]: Start accepts. Automaton has 243 states. Word has length 243 [2018-10-01 00:37:58,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:58,729 INFO L225 Difference]: With dead ends: 247 [2018-10-01 00:37:58,729 INFO L226 Difference]: Without dead ends: 245 [2018-10-01 00:37:58,729 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:37:58,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-10-01 00:37:58,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-10-01 00:37:58,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-10-01 00:37:58,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-10-01 00:37:58,732 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 243 [2018-10-01 00:37:58,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:58,732 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-10-01 00:37:58,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 243 states. [2018-10-01 00:37:58,732 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-10-01 00:37:58,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-01 00:37:58,733 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:58,733 INFO L375 BasicCegarLoop]: trace histogram [241, 1, 1, 1] [2018-10-01 00:37:58,733 INFO L423 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:58,733 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:58,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1029529048, now seen corresponding path program 241 times [2018-10-01 00:37:58,734 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:58,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:58,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:58,734 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:58,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 29161 backedges. 0 proven. 29161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:01,010 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:01,011 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:01,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:01,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:01,922 INFO L134 CoverageAnalysis]: Checked inductivity of 29161 backedges. 0 proven. 29161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:01,944 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:01,944 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [243, 243] total 243 [2018-10-01 00:38:01,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 244 states [2018-10-01 00:38:01,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 244 interpolants. [2018-10-01 00:38:01,950 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:01,950 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 244 states. [2018-10-01 00:38:07,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:07,575 INFO L93 Difference]: Finished difference Result 248 states and 248 transitions. [2018-10-01 00:38:07,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2018-10-01 00:38:07,575 INFO L78 Accepts]: Start accepts. Automaton has 244 states. Word has length 244 [2018-10-01 00:38:07,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:07,576 INFO L225 Difference]: With dead ends: 248 [2018-10-01 00:38:07,576 INFO L226 Difference]: Without dead ends: 246 [2018-10-01 00:38:07,576 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:38:07,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-10-01 00:38:07,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2018-10-01 00:38:07,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-10-01 00:38:07,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 246 transitions. [2018-10-01 00:38:07,579 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 246 transitions. Word has length 244 [2018-10-01 00:38:07,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:07,579 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 246 transitions. [2018-10-01 00:38:07,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 244 states. [2018-10-01 00:38:07,579 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 246 transitions. [2018-10-01 00:38:07,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-10-01 00:38:07,580 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:07,580 INFO L375 BasicCegarLoop]: trace histogram [242, 1, 1, 1] [2018-10-01 00:38:07,580 INFO L423 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:07,580 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:07,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1850631391, now seen corresponding path program 242 times [2018-10-01 00:38:07,581 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:07,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:07,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:07,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:07,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:09,953 INFO L134 CoverageAnalysis]: Checked inductivity of 29403 backedges. 0 proven. 29403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:09,953 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:09,953 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:09,960 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:38:10,385 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:38:10,386 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:10,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 29403 backedges. 0 proven. 29403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:10,909 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:10,910 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [244, 244] total 244 [2018-10-01 00:38:10,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 245 states [2018-10-01 00:38:10,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 245 interpolants. [2018-10-01 00:38:10,915 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:10,915 INFO L87 Difference]: Start difference. First operand 246 states and 246 transitions. Second operand 245 states. [2018-10-01 00:38:16,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:16,018 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-10-01 00:38:16,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2018-10-01 00:38:16,019 INFO L78 Accepts]: Start accepts. Automaton has 245 states. Word has length 245 [2018-10-01 00:38:16,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:16,019 INFO L225 Difference]: With dead ends: 249 [2018-10-01 00:38:16,019 INFO L226 Difference]: Without dead ends: 247 [2018-10-01 00:38:16,020 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:38:16,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-01 00:38:16,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-10-01 00:38:16,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-10-01 00:38:16,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-10-01 00:38:16,023 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 245 [2018-10-01 00:38:16,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:16,023 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-10-01 00:38:16,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 245 states. [2018-10-01 00:38:16,023 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-10-01 00:38:16,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-01 00:38:16,024 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:16,024 INFO L375 BasicCegarLoop]: trace histogram [243, 1, 1, 1] [2018-10-01 00:38:16,024 INFO L423 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:16,024 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:16,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1535000248, now seen corresponding path program 243 times [2018-10-01 00:38:16,024 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:16,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:16,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:16,025 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:16,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:18,700 INFO L134 CoverageAnalysis]: Checked inductivity of 29646 backedges. 0 proven. 29646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:18,701 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:18,701 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:18,708 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:38:19,690 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 123 check-sat command(s) [2018-10-01 00:38:19,690 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:19,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:20,213 INFO L134 CoverageAnalysis]: Checked inductivity of 29646 backedges. 0 proven. 29646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:20,235 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:20,235 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [245, 245] total 245 [2018-10-01 00:38:20,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 246 states [2018-10-01 00:38:20,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 246 interpolants. [2018-10-01 00:38:20,241 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:20,241 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 246 states. [2018-10-01 00:38:25,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:25,271 INFO L93 Difference]: Finished difference Result 250 states and 250 transitions. [2018-10-01 00:38:25,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 246 states. [2018-10-01 00:38:25,271 INFO L78 Accepts]: Start accepts. Automaton has 246 states. Word has length 246 [2018-10-01 00:38:25,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:25,272 INFO L225 Difference]: With dead ends: 250 [2018-10-01 00:38:25,272 INFO L226 Difference]: Without dead ends: 248 [2018-10-01 00:38:25,272 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time [2018-10-01 00:38:25,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-10-01 00:38:25,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2018-10-01 00:38:25,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-10-01 00:38:25,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-10-01 00:38:25,275 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 246 [2018-10-01 00:38:25,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:25,276 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-10-01 00:38:25,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 246 states. [2018-10-01 00:38:25,276 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-10-01 00:38:25,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-01 00:38:25,276 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:25,276 INFO L375 BasicCegarLoop]: trace histogram [244, 1, 1, 1] [2018-10-01 00:38:25,277 INFO L423 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:25,277 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:25,277 INFO L82 PathProgramCache]: Analyzing trace with hash -340369407, now seen corresponding path program 244 times [2018-10-01 00:38:25,277 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:25,277 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:25,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:25,277 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:25,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:27,912 INFO L134 CoverageAnalysis]: Checked inductivity of 29890 backedges. 0 proven. 29890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:27,912 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:27,912 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:27,920 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:38:28,298 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:38:28,298 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:28,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:28,796 INFO L134 CoverageAnalysis]: Checked inductivity of 29890 backedges. 0 proven. 29890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:28,818 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:28,818 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [246, 246] total 246 [2018-10-01 00:38:28,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 247 states [2018-10-01 00:38:28,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 247 interpolants. [2018-10-01 00:38:28,823 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:28,823 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 247 states. [2018-10-01 00:38:32,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:32,402 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-10-01 00:38:32,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2018-10-01 00:38:32,402 INFO L78 Accepts]: Start accepts. Automaton has 247 states. Word has length 247 [2018-10-01 00:38:32,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:32,403 INFO L225 Difference]: With dead ends: 251 [2018-10-01 00:38:32,403 INFO L226 Difference]: Without dead ends: 249 [2018-10-01 00:38:32,403 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 00:38:32,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-10-01 00:38:32,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-10-01 00:38:32,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-10-01 00:38:32,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-10-01 00:38:32,406 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 247 [2018-10-01 00:38:32,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:32,406 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-10-01 00:38:32,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 247 states. [2018-10-01 00:38:32,407 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-10-01 00:38:32,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-01 00:38:32,407 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:32,407 INFO L375 BasicCegarLoop]: trace histogram [245, 1, 1, 1] [2018-10-01 00:38:32,407 INFO L423 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:32,408 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:32,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1961519000, now seen corresponding path program 245 times [2018-10-01 00:38:32,408 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:32,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:32,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:32,408 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:32,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 30135 backedges. 0 proven. 30135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:34,801 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:34,801 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:34,808 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:38:35,729 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 124 check-sat command(s) [2018-10-01 00:38:35,730 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:35,747 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:36,293 INFO L134 CoverageAnalysis]: Checked inductivity of 30135 backedges. 0 proven. 30135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:36,316 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:36,317 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [247, 247] total 247 [2018-10-01 00:38:36,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 248 states [2018-10-01 00:38:36,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 248 interpolants. [2018-10-01 00:38:36,321 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:36,321 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 248 states. [2018-10-01 00:38:40,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:40,090 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2018-10-01 00:38:40,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 248 states. [2018-10-01 00:38:40,091 INFO L78 Accepts]: Start accepts. Automaton has 248 states. Word has length 248 [2018-10-01 00:38:40,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:40,091 INFO L225 Difference]: With dead ends: 252 [2018-10-01 00:38:40,091 INFO L226 Difference]: Without dead ends: 250 [2018-10-01 00:38:40,092 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:38:40,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-10-01 00:38:40,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2018-10-01 00:38:40,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-10-01 00:38:40,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 250 transitions. [2018-10-01 00:38:40,095 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 250 transitions. Word has length 248 [2018-10-01 00:38:40,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:40,095 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 250 transitions. [2018-10-01 00:38:40,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 248 states. [2018-10-01 00:38:40,095 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 250 transitions. [2018-10-01 00:38:40,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-01 00:38:40,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:40,096 INFO L375 BasicCegarLoop]: trace histogram [246, 1, 1, 1] [2018-10-01 00:38:40,096 INFO L423 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:40,096 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:40,096 INFO L82 PathProgramCache]: Analyzing trace with hash -677548831, now seen corresponding path program 246 times [2018-10-01 00:38:40,096 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:40,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:40,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:40,097 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:40,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:42,677 INFO L134 CoverageAnalysis]: Checked inductivity of 30381 backedges. 0 proven. 30381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:42,677 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:42,677 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:42,684 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:38:43,570 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 124 check-sat command(s) [2018-10-01 00:38:43,571 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:43,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 30381 backedges. 0 proven. 30381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:44,102 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:44,102 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [248, 248] total 248 [2018-10-01 00:38:44,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 249 states [2018-10-01 00:38:44,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 249 interpolants. [2018-10-01 00:38:44,108 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:44,108 INFO L87 Difference]: Start difference. First operand 250 states and 250 transitions. Second operand 249 states. [2018-10-01 00:38:49,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:49,455 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-10-01 00:38:49,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 249 states. [2018-10-01 00:38:49,456 INFO L78 Accepts]: Start accepts. Automaton has 249 states. Word has length 249 [2018-10-01 00:38:49,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:49,456 INFO L225 Difference]: With dead ends: 253 [2018-10-01 00:38:49,456 INFO L226 Difference]: Without dead ends: 251 [2018-10-01 00:38:49,456 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:38:49,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-10-01 00:38:49,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-10-01 00:38:49,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-01 00:38:49,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-10-01 00:38:49,459 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 249 [2018-10-01 00:38:49,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:49,460 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-10-01 00:38:49,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 249 states. [2018-10-01 00:38:49,460 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-10-01 00:38:49,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-01 00:38:49,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:49,460 INFO L375 BasicCegarLoop]: trace histogram [247, 1, 1, 1] [2018-10-01 00:38:49,461 INFO L423 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:49,461 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:49,461 INFO L82 PathProgramCache]: Analyzing trace with hash 470820744, now seen corresponding path program 247 times [2018-10-01 00:38:49,461 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:49,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:49,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:49,461 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:49,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:51,804 INFO L134 CoverageAnalysis]: Checked inductivity of 30628 backedges. 0 proven. 30628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:51,804 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:51,804 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:51,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:52,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:52,916 INFO L134 CoverageAnalysis]: Checked inductivity of 30628 backedges. 0 proven. 30628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:52,937 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:52,937 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [249, 249] total 249 [2018-10-01 00:38:52,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 250 states [2018-10-01 00:38:52,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 250 interpolants. [2018-10-01 00:38:52,942 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:52,942 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 250 states. [2018-10-01 00:38:57,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:57,511 INFO L93 Difference]: Finished difference Result 254 states and 254 transitions. [2018-10-01 00:38:57,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 250 states. [2018-10-01 00:38:57,511 INFO L78 Accepts]: Start accepts. Automaton has 250 states. Word has length 250 [2018-10-01 00:38:57,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:57,511 INFO L225 Difference]: With dead ends: 254 [2018-10-01 00:38:57,511 INFO L226 Difference]: Without dead ends: 252 [2018-10-01 00:38:57,512 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 00:38:57,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-10-01 00:38:57,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2018-10-01 00:38:57,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-10-01 00:38:57,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 252 transitions. [2018-10-01 00:38:57,515 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 252 transitions. Word has length 250 [2018-10-01 00:38:57,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:57,515 INFO L480 AbstractCegarLoop]: Abstraction has 252 states and 252 transitions. [2018-10-01 00:38:57,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 250 states. [2018-10-01 00:38:57,515 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 252 transitions. [2018-10-01 00:38:57,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-01 00:38:57,516 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:57,516 INFO L375 BasicCegarLoop]: trace histogram [248, 1, 1, 1] [2018-10-01 00:38:57,516 INFO L423 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:57,516 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:57,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1710539201, now seen corresponding path program 248 times [2018-10-01 00:38:57,517 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:57,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:57,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:57,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:57,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:00,068 INFO L134 CoverageAnalysis]: Checked inductivity of 30876 backedges. 0 proven. 30876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:00,069 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:00,069 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:00,075 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:39:00,457 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:39:00,457 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:00,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 30876 backedges. 0 proven. 30876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:00,984 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:00,985 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [250, 250] total 250 [2018-10-01 00:39:00,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 251 states [2018-10-01 00:39:00,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 251 interpolants. [2018-10-01 00:39:00,989 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:00,989 INFO L87 Difference]: Start difference. First operand 252 states and 252 transitions. Second operand 251 states. [2018-10-01 00:39:05,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:05,532 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-10-01 00:39:05,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 251 states. [2018-10-01 00:39:05,532 INFO L78 Accepts]: Start accepts. Automaton has 251 states. Word has length 251 [2018-10-01 00:39:05,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:05,533 INFO L225 Difference]: With dead ends: 255 [2018-10-01 00:39:05,533 INFO L226 Difference]: Without dead ends: 253 [2018-10-01 00:39:05,533 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:39:05,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-10-01 00:39:05,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-10-01 00:39:05,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-10-01 00:39:05,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-10-01 00:39:05,536 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 251 [2018-10-01 00:39:05,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:05,536 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-10-01 00:39:05,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has 251 states. [2018-10-01 00:39:05,536 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-10-01 00:39:05,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-01 00:39:05,537 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:05,537 INFO L375 BasicCegarLoop]: trace histogram [249, 1, 1, 1] [2018-10-01 00:39:05,537 INFO L423 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:05,538 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:05,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1487105704, now seen corresponding path program 249 times [2018-10-01 00:39:05,538 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:05,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:05,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:05,538 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:05,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:08,089 INFO L134 CoverageAnalysis]: Checked inductivity of 31125 backedges. 0 proven. 31125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:08,090 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:08,090 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:08,097 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:39:09,042 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 126 check-sat command(s) [2018-10-01 00:39:09,042 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:09,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:09,562 INFO L134 CoverageAnalysis]: Checked inductivity of 31125 backedges. 0 proven. 31125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:09,584 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:09,585 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [251, 251] total 251 [2018-10-01 00:39:09,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 252 states [2018-10-01 00:39:09,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 252 interpolants. [2018-10-01 00:39:09,589 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:09,590 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 252 states. [2018-10-01 00:39:14,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:14,851 INFO L93 Difference]: Finished difference Result 256 states and 256 transitions. [2018-10-01 00:39:14,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 252 states. [2018-10-01 00:39:14,852 INFO L78 Accepts]: Start accepts. Automaton has 252 states. Word has length 252 [2018-10-01 00:39:14,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:14,852 INFO L225 Difference]: With dead ends: 256 [2018-10-01 00:39:14,852 INFO L226 Difference]: Without dead ends: 254 [2018-10-01 00:39:14,853 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:39:14,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-10-01 00:39:14,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2018-10-01 00:39:14,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-10-01 00:39:14,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2018-10-01 00:39:14,856 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 252 [2018-10-01 00:39:14,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:14,856 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2018-10-01 00:39:14,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 252 states. [2018-10-01 00:39:14,856 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2018-10-01 00:39:14,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-01 00:39:14,857 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:14,857 INFO L375 BasicCegarLoop]: trace histogram [250, 1, 1, 1] [2018-10-01 00:39:14,857 INFO L423 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:14,857 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:14,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1144365407, now seen corresponding path program 250 times [2018-10-01 00:39:14,857 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:14,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:14,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:14,858 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:14,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 31375 backedges. 0 proven. 31375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:17,413 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:17,413 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:17,421 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:39:17,804 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:39:17,805 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:17,819 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:18,546 INFO L134 CoverageAnalysis]: Checked inductivity of 31375 backedges. 0 proven. 31375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:18,568 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:18,569 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [252, 252] total 252 [2018-10-01 00:39:18,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 253 states [2018-10-01 00:39:18,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 253 interpolants. [2018-10-01 00:39:18,574 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:18,574 INFO L87 Difference]: Start difference. First operand 254 states and 254 transitions. Second operand 253 states. [2018-10-01 00:39:25,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:25,231 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-10-01 00:39:25,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 253 states. [2018-10-01 00:39:25,232 INFO L78 Accepts]: Start accepts. Automaton has 253 states. Word has length 253 [2018-10-01 00:39:25,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:25,232 INFO L225 Difference]: With dead ends: 257 [2018-10-01 00:39:25,232 INFO L226 Difference]: Without dead ends: 255 [2018-10-01 00:39:25,233 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time [2018-10-01 00:39:25,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-10-01 00:39:25,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-10-01 00:39:25,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-10-01 00:39:25,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-10-01 00:39:25,236 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 253 [2018-10-01 00:39:25,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:25,237 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-10-01 00:39:25,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 253 states. [2018-10-01 00:39:25,237 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-10-01 00:39:25,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-01 00:39:25,238 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:25,238 INFO L375 BasicCegarLoop]: trace histogram [251, 1, 1, 1] [2018-10-01 00:39:25,238 INFO L423 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:25,238 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:25,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1115591224, now seen corresponding path program 251 times [2018-10-01 00:39:25,238 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:25,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:25,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:25,239 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:25,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:27,766 INFO L134 CoverageAnalysis]: Checked inductivity of 31626 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:27,767 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:27,767 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:27,810 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:39:28,750 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 127 check-sat command(s) [2018-10-01 00:39:28,750 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:28,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:29,269 INFO L134 CoverageAnalysis]: Checked inductivity of 31626 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:29,294 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:29,295 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [253, 253] total 253 [2018-10-01 00:39:29,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 254 states [2018-10-01 00:39:29,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 254 interpolants. [2018-10-01 00:39:29,299 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:29,299 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 254 states. [2018-10-01 00:39:35,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:35,452 INFO L93 Difference]: Finished difference Result 258 states and 258 transitions. [2018-10-01 00:39:35,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2018-10-01 00:39:35,452 INFO L78 Accepts]: Start accepts. Automaton has 254 states. Word has length 254 [2018-10-01 00:39:35,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:35,453 INFO L225 Difference]: With dead ends: 258 [2018-10-01 00:39:35,453 INFO L226 Difference]: Without dead ends: 256 [2018-10-01 00:39:35,453 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:39:35,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-10-01 00:39:35,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2018-10-01 00:39:35,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-10-01 00:39:35,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 256 transitions. [2018-10-01 00:39:35,456 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 256 transitions. Word has length 254 [2018-10-01 00:39:35,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:35,456 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 256 transitions. [2018-10-01 00:39:35,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 254 states. [2018-10-01 00:39:35,456 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 256 transitions. [2018-10-01 00:39:35,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-10-01 00:39:35,457 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:35,457 INFO L375 BasicCegarLoop]: trace histogram [252, 1, 1, 1] [2018-10-01 00:39:35,457 INFO L423 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:35,457 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:35,457 INFO L82 PathProgramCache]: Analyzing trace with hash -223591551, now seen corresponding path program 252 times [2018-10-01 00:39:35,457 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:35,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:35,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:35,458 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:35,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-01 00:39:37,482 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-01 00:39:37,486 WARN L206 ceAbstractionStarter]: Timeout [2018-10-01 00:39:37,486 INFO L202 PluginConnector]: Adding new model count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.10 12:39:37 BoogieIcfgContainer [2018-10-01 00:39:37,486 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-01 00:39:37,487 INFO L168 Benchmark]: Toolchain (without parser) took 800137.28 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 331.4 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 35.6 MB). Peak memory consumption was 366.9 MB. Max. memory is 7.1 GB. [2018-10-01 00:39:37,489 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.27 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. [2018-10-01 00:39:37,489 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.65 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. [2018-10-01 00:39:37,490 INFO L168 Benchmark]: Boogie Preprocessor took 25.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-01 00:39:37,490 INFO L168 Benchmark]: RCFGBuilder took 293.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-01 00:39:37,490 INFO L168 Benchmark]: TraceAbstraction took 799766.92 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 331.4 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 14.5 MB). Peak memory consumption was 345.8 MB. Max. memory is 7.1 GB. [2018-10-01 00:39:37,492 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 0.27 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 44.65 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 293.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 799766.92 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 331.4 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 14.5 MB). Peak memory consumption was 345.8 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 256 with TraceHistMax 252, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 254 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 799.6s OverallTime, 253 OverallIterations, 252 TraceHistogramMax, 383.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 756 SDtfs, 0 SDslu, 13176 SDs, 0 SdLazy, 45306 SolverSat, 581 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 62.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64258 GetRequests, 32380 SyntacticMatches, 0 SemanticMatches, 31878 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 289.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=256occurred in iteration=252, 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: 0.7s AutomataMinimizationTime, 252 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 9.2s SsaConstructionTime, 76.0s SatisfiabilityAnalysisTime, 315.6s InterpolantComputationTime, 64761 NumberOfCodeBlocks, 64761 NumberOfCodeBlocksAsserted, 8546 NumberOfCheckSat, 64258 ConstructedInterpolants, 0 QuantifiedInterpolants, 32452300 SizeOfPredicates, 252 NumberOfNonLiveVariables, 351651 ConjunctsInSsa, 32129 ConjunctsInUnsatCore, 503 InterpolantComputations, 1 PerfectInterpolantSequences, 0/5334252 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-0-2018-10-01_00-39-37-501.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-0-2018-10-01_00-39-37-501.csv Completed graceful shutdown