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/gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-10-01 00:35:27,711 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-01 00:35:27,713 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-01 00:35:27,728 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-01 00:35:27,729 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-01 00:35:27,730 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-01 00:35:27,731 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-01 00:35:27,733 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-01 00:35:27,735 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-01 00:35:27,736 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-01 00:35:27,736 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-01 00:35:27,759 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 00:35:27,786 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-01 00:35:27,786 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-01 00:35:27,787 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-01 00:35:27,787 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-01 00:35:27,788 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-01 00:35:27,788 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-01 00:35:27,788 INFO L133 SettingsManager]: * Use SBE=true [2018-10-01 00:35:27,788 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-01 00:35:27,788 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-01 00:35:27,789 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-01 00:35:27,789 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-01 00:35:27,789 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-01 00:35:27,789 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-01 00:35:27,790 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-01 00:35:27,790 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-01 00:35:27,790 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-01 00:35:27,791 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-01 00:35:27,792 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-01 00:35:27,792 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-01 00:35:27,792 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-01 00:35:27,792 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-01 00:35:27,792 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-01 00:35:27,793 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-01 00:35:27,793 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-01 00:35:27,793 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-01 00:35:27,793 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-01 00:35:27,793 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-01 00:35:27,794 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-01 00:35:27,794 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-01 00:35:27,794 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-01 00:35:27,794 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-01 00:35:27,836 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-01 00:35:27,849 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-01 00:35:27,853 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-01 00:35:27,855 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-01 00:35:27,856 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-01 00:35:27,857 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl [2018-10-01 00:35:27,857 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl' [2018-10-01 00:35:27,914 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-01 00:35:27,918 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-01 00:35:27,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-01 00:35:27,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-01 00:35:27,920 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-01 00:35:27,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:35:27" (1/1) ... [2018-10-01 00:35:27,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:35:27" (1/1) ... [2018-10-01 00:35:27,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-01 00:35:27,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-01 00:35:27,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-01 00:35:27,960 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-01 00:35:27,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:35:27" (1/1) ... [2018-10-01 00:35:27,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:35:27" (1/1) ... [2018-10-01 00:35:27,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:35:27" (1/1) ... [2018-10-01 00:35:27,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:35:27" (1/1) ... [2018-10-01 00:35:27,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:35:27" (1/1) ... [2018-10-01 00:35:27,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:35:27" (1/1) ... [2018-10-01 00:35:27,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:35:27" (1/1) ... [2018-10-01 00:35:27,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-01 00:35:27,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-01 00:35:27,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-01 00:35:27,981 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-01 00:35:27,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:35:27" (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 00:35:28,057 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-01 00:35:28,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-01 00:35:28,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-01 00:35:28,291 INFO L348 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-01 00:35:28,292 INFO L202 PluginConnector]: Adding new model gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 12:35:28 BoogieIcfgContainer [2018-10-01 00:35:28,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-01 00:35:28,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-01 00:35:28,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-01 00:35:28,296 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-01 00:35:28,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:35:27" (1/2) ... [2018-10-01 00:35:28,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41aab529 and model type gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.10 12:35:28, skipping insertion in model container [2018-10-01 00:35:28,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 12:35:28" (2/2) ... [2018-10-01 00:35:28,300 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl [2018-10-01 00:35:28,311 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-01 00:35:28,322 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-01 00:35:28,374 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-01 00:35:28,375 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-01 00:35:28,376 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-01 00:35:28,376 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-01 00:35:28,376 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-01 00:35:28,376 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-01 00:35:28,376 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-01 00:35:28,377 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-01 00:35:28,377 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-01 00:35:28,391 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-01 00:35:28,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-01 00:35:28,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:28,398 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-01 00:35:28,399 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:28,407 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:28,407 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2018-10-01 00:35:28,409 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:28,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:28,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:28,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:35:28,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:28,485 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:28,485 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:28,485 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:28,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:35:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:28,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:28,612 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 00:35:28,672 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 00:35:28,672 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-01 00:35:28,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-01 00:35:28,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-01 00:35:28,702 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:28,709 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-01 00:35:28,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:28,846 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-10-01 00:35:28,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-01 00:35:28,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-01 00:35:28,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:28,859 INFO L225 Difference]: With dead ends: 9 [2018-10-01 00:35:28,859 INFO L226 Difference]: Without dead ends: 5 [2018-10-01 00:35:28,863 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 00:35:28,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-01 00:35:28,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-01 00:35:28,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-01 00:35:28,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-01 00:35:28,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-01 00:35:28,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:28,897 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-01 00:35:28,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-01 00:35:28,898 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-01 00:35:28,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-01 00:35:28,898 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:28,899 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-01 00:35:28,899 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:28,899 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:28,899 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2018-10-01 00:35:28,900 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:28,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:28,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:28,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:35:28,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:28,913 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:28,914 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:28,914 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:28,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:35:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:28,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:28,999 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 00:35:29,020 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:35:29,020 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-10-01 00:35:29,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-01 00:35:29,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-01 00:35:29,022 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:29,022 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-10-01 00:35:29,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:29,103 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-01 00:35:29,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-01 00:35:29,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-10-01 00:35:29,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:29,104 INFO L225 Difference]: With dead ends: 8 [2018-10-01 00:35:29,104 INFO L226 Difference]: Without dead ends: 6 [2018-10-01 00:35:29,105 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 00:35:29,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-01 00:35:29,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-01 00:35:29,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-01 00:35:29,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-01 00:35:29,108 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-01 00:35:29,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:29,108 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-01 00:35:29,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-01 00:35:29,108 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-01 00:35:29,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-01 00:35:29,109 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:29,109 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-01 00:35:29,109 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:29,109 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:29,110 INFO L82 PathProgramCache]: Analyzing trace with hash 28844579, now seen corresponding path program 2 times [2018-10-01 00:35:29,110 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:29,110 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:29,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:29,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:35:29,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:29,118 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:29,118 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:29,118 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:29,133 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:35:29,144 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:35:29,145 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:29,146 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:29,254 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 00:35:29,274 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:35:29,275 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-10-01 00:35:29,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-01 00:35:29,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-01 00:35:29,275 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:29,276 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-10-01 00:35:29,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:29,639 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-01 00:35:29,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-01 00:35:29,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-10-01 00:35:29,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:29,642 INFO L225 Difference]: With dead ends: 9 [2018-10-01 00:35:29,642 INFO L226 Difference]: Without dead ends: 7 [2018-10-01 00:35:29,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 00:35:29,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-01 00:35:29,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-01 00:35:29,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-01 00:35:29,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-01 00:35:29,646 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-01 00:35:29,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:29,646 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-01 00:35:29,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-01 00:35:29,647 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-01 00:35:29,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-01 00:35:29,647 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:29,647 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-10-01 00:35:29,648 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:29,648 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:29,648 INFO L82 PathProgramCache]: Analyzing trace with hash 894183756, now seen corresponding path program 3 times [2018-10-01 00:35:29,648 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:29,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:29,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:29,650 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:29,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:29,658 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:29,658 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:29,658 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-01 00:35:29,673 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:29,691 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-01 00:35:29,692 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:29,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:29,747 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 00:35:29,767 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:35:29,768 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-01 00:35:29,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-01 00:35:29,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-01 00:35:29,769 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:29,769 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-10-01 00:35:30,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:30,123 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-01 00:35:30,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-01 00:35:30,124 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-10-01 00:35:30,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:30,125 INFO L225 Difference]: With dead ends: 10 [2018-10-01 00:35:30,125 INFO L226 Difference]: Without dead ends: 8 [2018-10-01 00:35:30,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 00:35:30,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-01 00:35:30,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-01 00:35:30,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-01 00:35:30,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-01 00:35:30,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-01 00:35:30,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:30,130 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-01 00:35:30,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-01 00:35:30,130 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-01 00:35:30,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-01 00:35:30,131 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:30,131 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-10-01 00:35:30,132 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:30,132 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:30,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1949894467, now seen corresponding path program 4 times [2018-10-01 00:35:30,132 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:30,132 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:30,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:30,134 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:30,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:30,142 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:30,142 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:30,142 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:30,160 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:35:30,171 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:35:30,172 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:30,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:30,264 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 00:35:30,285 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:35:30,285 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-10-01 00:35:30,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-01 00:35:30,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-01 00:35:30,286 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:30,286 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-10-01 00:35:30,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:30,891 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-01 00:35:30,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-01 00:35:30,892 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-10-01 00:35:30,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:30,892 INFO L225 Difference]: With dead ends: 11 [2018-10-01 00:35:30,892 INFO L226 Difference]: Without dead ends: 9 [2018-10-01 00:35:30,893 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 00:35:30,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-01 00:35:30,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-01 00:35:30,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-01 00:35:30,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-01 00:35:30,896 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-01 00:35:30,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:30,897 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-01 00:35:30,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-01 00:35:30,897 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-01 00:35:30,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-01 00:35:30,898 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:30,898 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-10-01 00:35:30,898 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:30,898 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:30,899 INFO L82 PathProgramCache]: Analyzing trace with hash 317188140, now seen corresponding path program 5 times [2018-10-01 00:35:30,899 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:30,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:30,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:30,900 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:30,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:30,909 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:30,910 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:30,910 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:30,923 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:35:30,935 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-01 00:35:30,936 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:30,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:31,033 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 00:35:31,053 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:35:31,054 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-01 00:35:31,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-01 00:35:31,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-01 00:35:31,054 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:31,055 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-10-01 00:35:31,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:31,280 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-01 00:35:31,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-01 00:35:31,286 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-01 00:35:31,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:31,286 INFO L225 Difference]: With dead ends: 12 [2018-10-01 00:35:31,287 INFO L226 Difference]: Without dead ends: 10 [2018-10-01 00:35:31,287 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 00:35:31,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-01 00:35:31,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-01 00:35:31,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-01 00:35:31,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-01 00:35:31,290 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-01 00:35:31,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:31,291 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-01 00:35:31,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-01 00:35:31,291 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-01 00:35:31,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-01 00:35:31,292 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:31,292 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-10-01 00:35:31,292 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:31,292 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:31,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1242899555, now seen corresponding path program 6 times [2018-10-01 00:35:31,293 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:31,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:31,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:31,294 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:31,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:31,307 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:31,308 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:31,308 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:31,340 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:35:31,353 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-01 00:35:31,354 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:31,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:31,541 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 00:35:31,562 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:35:31,562 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-01 00:35:31,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-01 00:35:31,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-01 00:35:31,563 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:31,564 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-10-01 00:35:31,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:31,903 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-01 00:35:31,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-01 00:35:31,903 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-10-01 00:35:31,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:31,904 INFO L225 Difference]: With dead ends: 13 [2018-10-01 00:35:31,904 INFO L226 Difference]: Without dead ends: 11 [2018-10-01 00:35:31,904 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:35:31,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-01 00:35:31,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-01 00:35:31,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-01 00:35:31,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-01 00:35:31,908 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-01 00:35:31,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:31,908 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-01 00:35:31,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-01 00:35:31,909 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-01 00:35:31,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-01 00:35:31,909 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:31,909 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-10-01 00:35:31,910 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:31,910 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:31,910 INFO L82 PathProgramCache]: Analyzing trace with hash -124817652, now seen corresponding path program 7 times [2018-10-01 00:35:31,910 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:31,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:31,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:31,911 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:31,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:31,921 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:31,922 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:31,922 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:31,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:35:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:31,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:32,055 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 00:35:32,077 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:35:32,077 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-10-01 00:35:32,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-01 00:35:32,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-01 00:35:32,078 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:32,079 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-10-01 00:35:32,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:32,462 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-01 00:35:32,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-01 00:35:32,463 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-10-01 00:35:32,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:32,463 INFO L225 Difference]: With dead ends: 14 [2018-10-01 00:35:32,463 INFO L226 Difference]: Without dead ends: 12 [2018-10-01 00:35:32,464 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 00:35:32,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-01 00:35:32,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-01 00:35:32,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-01 00:35:32,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-01 00:35:32,467 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-01 00:35:32,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:32,468 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-01 00:35:32,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-01 00:35:32,468 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-01 00:35:32,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-01 00:35:32,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:32,469 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-10-01 00:35:32,469 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:32,469 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:32,469 INFO L82 PathProgramCache]: Analyzing trace with hash 425621891, now seen corresponding path program 8 times [2018-10-01 00:35:32,469 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:32,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:32,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:32,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:35:32,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:32,479 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:32,479 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:32,480 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:32,488 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:35:32,500 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:35:32,501 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:32,503 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:32,755 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 00:35:32,785 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:35:32,785 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-01 00:35:32,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-01 00:35:32,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-01 00:35:32,786 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:32,786 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-10-01 00:35:33,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:33,315 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-01 00:35:33,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-01 00:35:33,317 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-10-01 00:35:33,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:33,317 INFO L225 Difference]: With dead ends: 15 [2018-10-01 00:35:33,317 INFO L226 Difference]: Without dead ends: 13 [2018-10-01 00:35:33,318 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:35:33,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-01 00:35:33,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-01 00:35:33,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-01 00:35:33,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-01 00:35:33,322 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-01 00:35:33,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:33,323 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-01 00:35:33,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-01 00:35:33,323 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-01 00:35:33,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-01 00:35:33,323 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:33,324 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-10-01 00:35:33,324 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:33,324 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:33,324 INFO L82 PathProgramCache]: Analyzing trace with hash 309378540, now seen corresponding path program 9 times [2018-10-01 00:35:33,324 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:33,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:33,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:33,325 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:33,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:33,334 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:33,335 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:33,335 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:33,344 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:35:33,365 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-01 00:35:33,365 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:33,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:33,512 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 00:35:33,532 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:35:33,532 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-01 00:35:33,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-01 00:35:33,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-01 00:35:33,533 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:33,534 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-10-01 00:35:34,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:34,253 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-01 00:35:34,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-01 00:35:34,253 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-10-01 00:35:34,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:34,254 INFO L225 Difference]: With dead ends: 16 [2018-10-01 00:35:34,254 INFO L226 Difference]: Without dead ends: 14 [2018-10-01 00:35:34,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:35:34,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-01 00:35:34,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-01 00:35:34,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-01 00:35:34,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-01 00:35:34,257 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-01 00:35:34,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:34,258 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-01 00:35:34,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-01 00:35:34,258 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-01 00:35:34,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-01 00:35:34,258 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:34,258 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-10-01 00:35:34,259 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:34,259 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:34,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1000801955, now seen corresponding path program 10 times [2018-10-01 00:35:34,259 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:34,259 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:34,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:34,260 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:34,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:34,269 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:34,269 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:34,269 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:34,282 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:35:34,298 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:35:34,299 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:34,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:34,436 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 00:35:34,458 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:35:34,458 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-01 00:35:34,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-01 00:35:34,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-01 00:35:34,459 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:34,459 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-10-01 00:35:35,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:35,240 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-01 00:35:35,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-01 00:35:35,241 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-10-01 00:35:35,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:35,241 INFO L225 Difference]: With dead ends: 17 [2018-10-01 00:35:35,242 INFO L226 Difference]: Without dead ends: 15 [2018-10-01 00:35:35,242 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:35:35,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-01 00:35:35,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-01 00:35:35,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-01 00:35:35,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-01 00:35:35,246 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-01 00:35:35,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:35,247 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-01 00:35:35,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-01 00:35:35,247 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-01 00:35:35,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-01 00:35:35,247 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:35,247 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-10-01 00:35:35,248 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:35,248 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:35,248 INFO L82 PathProgramCache]: Analyzing trace with hash 960091340, now seen corresponding path program 11 times [2018-10-01 00:35:35,248 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:35,248 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:35,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:35,249 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:35,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:35,259 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:35,259 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:35,259 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:35,273 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:35:35,293 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-01 00:35:35,294 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:35,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:35,616 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 00:35:35,643 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:35:35,644 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-10-01 00:35:35,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-01 00:35:35,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-01 00:35:35,644 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:35,644 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-10-01 00:35:36,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:36,294 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-01 00:35:36,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-01 00:35:36,294 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-10-01 00:35:36,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:36,295 INFO L225 Difference]: With dead ends: 18 [2018-10-01 00:35:36,295 INFO L226 Difference]: Without dead ends: 16 [2018-10-01 00:35:36,295 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:35:36,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-01 00:35:36,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-01 00:35:36,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-01 00:35:36,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-01 00:35:36,299 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-01 00:35:36,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:36,299 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-01 00:35:36,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-01 00:35:36,300 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-01 00:35:36,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-01 00:35:36,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:36,300 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-10-01 00:35:36,300 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:36,301 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:36,301 INFO L82 PathProgramCache]: Analyzing trace with hash -301937725, now seen corresponding path program 12 times [2018-10-01 00:35:36,301 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:36,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:36,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:36,302 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:36,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:36,310 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:36,311 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:36,311 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:36,324 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:35:36,344 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-01 00:35:36,344 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:36,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:36,542 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 00:35:36,563 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:35:36,563 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-10-01 00:35:36,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-01 00:35:36,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-01 00:35:36,564 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:36,564 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-10-01 00:35:37,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:37,287 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-01 00:35:37,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-01 00:35:37,293 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-10-01 00:35:37,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:37,293 INFO L225 Difference]: With dead ends: 19 [2018-10-01 00:35:37,293 INFO L226 Difference]: Without dead ends: 17 [2018-10-01 00:35:37,294 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:35:37,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-01 00:35:37,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-01 00:35:37,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-01 00:35:37,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-01 00:35:37,300 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-01 00:35:37,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:37,301 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-01 00:35:37,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-01 00:35:37,302 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-01 00:35:37,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-01 00:35:37,302 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:37,302 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-10-01 00:35:37,303 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:37,303 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:37,303 INFO L82 PathProgramCache]: Analyzing trace with hash -770133076, now seen corresponding path program 13 times [2018-10-01 00:35:37,303 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:37,303 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:37,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:37,304 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:37,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:37,321 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:37,321 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:37,321 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:37,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:35:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:37,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:37,740 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 00:35:37,763 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:35:37,763 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-10-01 00:35:37,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-01 00:35:37,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-01 00:35:37,764 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:37,764 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-10-01 00:35:38,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:38,794 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-01 00:35:38,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-01 00:35:38,794 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-10-01 00:35:38,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:38,795 INFO L225 Difference]: With dead ends: 20 [2018-10-01 00:35:38,795 INFO L226 Difference]: Without dead ends: 18 [2018-10-01 00:35:38,795 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:35:38,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-01 00:35:38,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-01 00:35:38,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-01 00:35:38,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-01 00:35:38,799 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-01 00:35:38,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:38,799 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-01 00:35:38,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-01 00:35:38,799 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-01 00:35:38,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-01 00:35:38,800 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:38,800 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-10-01 00:35:38,800 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:38,801 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:38,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1895680227, now seen corresponding path program 14 times [2018-10-01 00:35:38,801 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:38,801 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:38,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:38,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:35:38,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:38,821 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:38,821 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:38,821 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:38,840 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:35:38,863 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:35:38,863 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:38,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:39,113 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 00:35:39,134 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:35:39,134 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-10-01 00:35:39,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-01 00:35:39,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-01 00:35:39,135 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:39,135 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-10-01 00:35:40,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:40,236 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-01 00:35:40,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-01 00:35:40,237 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-10-01 00:35:40,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:40,238 INFO L225 Difference]: With dead ends: 21 [2018-10-01 00:35:40,238 INFO L226 Difference]: Without dead ends: 19 [2018-10-01 00:35:40,238 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:35:40,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-01 00:35:40,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-01 00:35:40,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-01 00:35:40,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-01 00:35:40,242 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-01 00:35:40,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:40,243 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-01 00:35:40,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-01 00:35:40,243 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-01 00:35:40,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-01 00:35:40,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:40,244 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-10-01 00:35:40,244 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:40,244 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:40,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1363453300, now seen corresponding path program 15 times [2018-10-01 00:35:40,244 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:40,245 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:40,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:40,245 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:40,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:40,255 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:40,255 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:40,255 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:40,271 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:35:40,330 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-01 00:35:40,331 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:40,333 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:41,496 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 00:35:41,516 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:35:41,517 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-10-01 00:35:41,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-01 00:35:41,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-01 00:35:41,517 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:41,517 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-10-01 00:35:42,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:42,651 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-01 00:35:42,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-01 00:35:42,651 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-10-01 00:35:42,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:42,652 INFO L225 Difference]: With dead ends: 22 [2018-10-01 00:35:42,652 INFO L226 Difference]: Without dead ends: 20 [2018-10-01 00:35:42,652 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:35:42,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-01 00:35:42,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-01 00:35:42,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-01 00:35:42,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-01 00:35:42,657 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-01 00:35:42,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:42,657 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-01 00:35:42,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-01 00:35:42,657 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-01 00:35:42,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-01 00:35:42,658 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:42,658 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-10-01 00:35:42,658 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:42,658 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:42,658 INFO L82 PathProgramCache]: Analyzing trace with hash 682622467, now seen corresponding path program 16 times [2018-10-01 00:35:42,659 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:42,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:42,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:42,660 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:42,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:42,669 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:42,669 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:42,669 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:42,692 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:35:42,714 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:35:42,715 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:42,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:43,101 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 00:35:43,122 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:35:43,122 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-10-01 00:35:43,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-01 00:35:43,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-01 00:35:43,123 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:43,123 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-10-01 00:35:44,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:44,378 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-01 00:35:44,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-01 00:35:44,380 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-10-01 00:35:44,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:44,380 INFO L225 Difference]: With dead ends: 23 [2018-10-01 00:35:44,381 INFO L226 Difference]: Without dead ends: 21 [2018-10-01 00:35:44,381 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:35:44,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-01 00:35:44,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-01 00:35:44,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-01 00:35:44,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-01 00:35:44,384 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-10-01 00:35:44,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:44,384 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-01 00:35:44,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-01 00:35:44,385 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-01 00:35:44,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-01 00:35:44,385 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:44,385 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-10-01 00:35:44,385 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:44,385 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:44,386 INFO L82 PathProgramCache]: Analyzing trace with hash -313538196, now seen corresponding path program 17 times [2018-10-01 00:35:44,386 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:44,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:44,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:44,387 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:44,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:44,396 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:44,396 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:44,396 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:44,412 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:35:44,440 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-01 00:35:44,440 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:44,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:44,965 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 00:35:44,985 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:35:44,986 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-01 00:35:44,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-01 00:35:44,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-01 00:35:44,986 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:44,986 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-10-01 00:35:46,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:46,365 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-01 00:35:46,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-01 00:35:46,367 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-10-01 00:35:46,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:46,368 INFO L225 Difference]: With dead ends: 24 [2018-10-01 00:35:46,368 INFO L226 Difference]: Without dead ends: 22 [2018-10-01 00:35:46,368 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:35:46,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-01 00:35:46,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-01 00:35:46,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-01 00:35:46,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-01 00:35:46,373 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-10-01 00:35:46,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:46,373 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-01 00:35:46,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-01 00:35:46,374 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-01 00:35:46,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-01 00:35:46,374 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:46,374 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-10-01 00:35:46,375 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:46,375 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:46,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1129747677, now seen corresponding path program 18 times [2018-10-01 00:35:46,375 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:46,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:46,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:46,376 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:46,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:46,385 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:46,386 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:46,386 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:46,410 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:35:46,451 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-01 00:35:46,451 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:46,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:46,761 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 00:35:46,781 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:35:46,782 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-01 00:35:46,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-01 00:35:46,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-01 00:35:46,782 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:46,783 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-10-01 00:35:48,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:48,311 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-01 00:35:48,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-01 00:35:48,312 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-10-01 00:35:48,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:48,313 INFO L225 Difference]: With dead ends: 25 [2018-10-01 00:35:48,313 INFO L226 Difference]: Without dead ends: 23 [2018-10-01 00:35:48,313 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:35:48,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-01 00:35:48,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-01 00:35:48,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-01 00:35:48,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-01 00:35:48,318 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-10-01 00:35:48,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:48,318 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-01 00:35:48,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-01 00:35:48,318 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-01 00:35:48,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-01 00:35:48,319 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:48,319 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-10-01 00:35:48,319 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:48,320 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:48,320 INFO L82 PathProgramCache]: Analyzing trace with hash -662437812, now seen corresponding path program 19 times [2018-10-01 00:35:48,320 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:48,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:48,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:48,321 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:48,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:48,329 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:48,329 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:48,329 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:48,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:35:48,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:48,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:48,747 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 00:35:48,767 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:35:48,768 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-01 00:35:48,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-01 00:35:48,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-01 00:35:48,768 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:48,768 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-10-01 00:35:50,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:50,356 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-01 00:35:50,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-01 00:35:50,357 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-10-01 00:35:50,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:50,358 INFO L225 Difference]: With dead ends: 26 [2018-10-01 00:35:50,358 INFO L226 Difference]: Without dead ends: 24 [2018-10-01 00:35:50,358 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:35:50,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-01 00:35:50,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-01 00:35:50,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-01 00:35:50,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-01 00:35:50,362 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-10-01 00:35:50,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:50,363 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-01 00:35:50,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-01 00:35:50,363 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-01 00:35:50,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-01 00:35:50,363 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:50,363 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-10-01 00:35:50,364 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:50,364 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:50,364 INFO L82 PathProgramCache]: Analyzing trace with hash 939266115, now seen corresponding path program 20 times [2018-10-01 00:35:50,364 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:50,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:50,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:50,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:35:50,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:50,373 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:50,373 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:50,373 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:50,385 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:35:50,413 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:35:50,413 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:50,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:50,779 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 00:35:50,800 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:35:50,800 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-01 00:35:50,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-01 00:35:50,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-01 00:35:50,801 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:50,801 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-10-01 00:35:52,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:52,552 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-01 00:35:52,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-01 00:35:52,553 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-10-01 00:35:52,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:52,554 INFO L225 Difference]: With dead ends: 27 [2018-10-01 00:35:52,554 INFO L226 Difference]: Without dead ends: 25 [2018-10-01 00:35:52,554 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:35:52,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-01 00:35:52,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-01 00:35:52,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-01 00:35:52,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-01 00:35:52,559 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-10-01 00:35:52,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:52,559 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-01 00:35:52,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-01 00:35:52,559 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-01 00:35:52,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-01 00:35:52,560 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:52,560 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-10-01 00:35:52,560 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:52,560 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:52,561 INFO L82 PathProgramCache]: Analyzing trace with hash -947519700, now seen corresponding path program 21 times [2018-10-01 00:35:52,561 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:52,561 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:52,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:52,562 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:52,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:52,569 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:52,570 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:52,570 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:52,591 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:35:52,718 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-01 00:35:52,718 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:52,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:53,103 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 00:35:53,124 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:35:53,124 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-01 00:35:53,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-01 00:35:53,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-01 00:35:53,125 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:53,125 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-10-01 00:35:55,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:55,237 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-01 00:35:55,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-01 00:35:55,240 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-10-01 00:35:55,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:55,240 INFO L225 Difference]: With dead ends: 28 [2018-10-01 00:35:55,240 INFO L226 Difference]: Without dead ends: 26 [2018-10-01 00:35:55,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:35:55,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-01 00:35:55,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-01 00:35:55,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-01 00:35:55,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-01 00:35:55,245 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-10-01 00:35:55,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:55,245 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-01 00:35:55,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-01 00:35:55,246 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-01 00:35:55,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-01 00:35:55,246 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:55,246 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-10-01 00:35:55,246 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:55,247 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:55,247 INFO L82 PathProgramCache]: Analyzing trace with hash 691662179, now seen corresponding path program 22 times [2018-10-01 00:35:55,247 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:55,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:55,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:55,248 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:55,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:55,255 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:55,256 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:55,256 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:55,276 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:35:55,307 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:35:55,307 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:55,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:55,712 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 00:35:55,733 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:35:55,733 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-01 00:35:55,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-01 00:35:55,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-01 00:35:55,734 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:55,734 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-10-01 00:35:58,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:58,155 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-01 00:35:58,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-01 00:35:58,155 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-10-01 00:35:58,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:58,155 INFO L225 Difference]: With dead ends: 29 [2018-10-01 00:35:58,155 INFO L226 Difference]: Without dead ends: 27 [2018-10-01 00:35:58,156 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:35:58,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-01 00:35:58,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-01 00:35:58,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-01 00:35:58,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-01 00:35:58,162 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-10-01 00:35:58,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:58,162 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-01 00:35:58,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-01 00:35:58,162 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-01 00:35:58,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-01 00:35:58,163 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:58,163 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-10-01 00:35:58,163 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:58,163 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:58,163 INFO L82 PathProgramCache]: Analyzing trace with hash -33307124, now seen corresponding path program 23 times [2018-10-01 00:35:58,164 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:58,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:58,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:58,164 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:58,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:58,172 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:35:58,172 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:35:58,172 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:35:58,190 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:35:58,229 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-01 00:35:58,230 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:58,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:58,772 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 00:35:58,803 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:35:58,804 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-01 00:35:58,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-01 00:35:58,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-01 00:35:58,804 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:58,805 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-10-01 00:36:01,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:01,303 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-01 00:36:01,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-01 00:36:01,303 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-10-01 00:36:01,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:01,304 INFO L225 Difference]: With dead ends: 30 [2018-10-01 00:36:01,304 INFO L226 Difference]: Without dead ends: 28 [2018-10-01 00:36:01,304 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:36:01,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-01 00:36:01,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-01 00:36:01,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-01 00:36:01,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-01 00:36:01,308 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-10-01 00:36:01,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:01,309 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-01 00:36:01,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-01 00:36:01,309 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-01 00:36:01,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-01 00:36:01,309 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:01,310 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-10-01 00:36:01,310 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:01,310 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:01,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1032519037, now seen corresponding path program 24 times [2018-10-01 00:36:01,310 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:01,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:01,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:01,311 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:01,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:01,318 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:36:01,319 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:36:01,319 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:36:01,331 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:36:01,392 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-01 00:36:01,392 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:01,395 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:01,959 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 00:36:01,979 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:36:01,979 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-01 00:36:01,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-01 00:36:01,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-01 00:36:01,980 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:01,980 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-10-01 00:36:04,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:04,761 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-01 00:36:04,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-01 00:36:04,761 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-10-01 00:36:04,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:04,762 INFO L225 Difference]: With dead ends: 31 [2018-10-01 00:36:04,762 INFO L226 Difference]: Without dead ends: 29 [2018-10-01 00:36:04,762 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:36:04,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-01 00:36:04,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-01 00:36:04,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-01 00:36:04,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-01 00:36:04,767 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-10-01 00:36:04,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:04,767 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-01 00:36:04,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-01 00:36:04,768 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-01 00:36:04,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-01 00:36:04,768 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:04,768 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-10-01 00:36:04,769 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:04,769 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:04,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1943317268, now seen corresponding path program 25 times [2018-10-01 00:36:04,769 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:04,769 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:04,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:04,770 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:04,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:04,777 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:36:04,777 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:36:04,777 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:36:04,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:36:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:04,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:05,311 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 00:36:05,332 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:36:05,332 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-01 00:36:05,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-01 00:36:05,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-01 00:36:05,332 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:05,333 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-10-01 00:36:08,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:08,024 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-01 00:36:08,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-01 00:36:08,025 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-10-01 00:36:08,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:08,026 INFO L225 Difference]: With dead ends: 32 [2018-10-01 00:36:08,026 INFO L226 Difference]: Without dead ends: 30 [2018-10-01 00:36:08,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:36:08,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-01 00:36:08,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-01 00:36:08,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-01 00:36:08,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-01 00:36:08,031 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-01 00:36:08,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:08,031 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-01 00:36:08,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-01 00:36:08,031 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-01 00:36:08,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-01 00:36:08,032 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:08,032 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-10-01 00:36:08,032 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:08,033 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:08,033 INFO L82 PathProgramCache]: Analyzing trace with hash -113291357, now seen corresponding path program 26 times [2018-10-01 00:36:08,033 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:08,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:08,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:08,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:36:08,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:08,041 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:36:08,041 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:36:08,042 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:36:08,054 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:36:08,106 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:36:08,106 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:08,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:08,724 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 00:36:08,744 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:36:08,745 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-01 00:36:08,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-01 00:36:08,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-01 00:36:08,745 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:08,745 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-10-01 00:36:11,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:11,886 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-01 00:36:11,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-01 00:36:11,886 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-10-01 00:36:11,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:11,887 INFO L225 Difference]: With dead ends: 33 [2018-10-01 00:36:11,887 INFO L226 Difference]: Without dead ends: 31 [2018-10-01 00:36:11,887 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:36:11,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-01 00:36:11,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-01 00:36:11,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-01 00:36:11,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-01 00:36:11,891 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-10-01 00:36:11,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:11,892 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-01 00:36:11,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-01 00:36:11,892 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-01 00:36:11,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-01 00:36:11,892 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:11,892 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-10-01 00:36:11,893 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:11,893 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:11,893 INFO L82 PathProgramCache]: Analyzing trace with hash 782937036, now seen corresponding path program 27 times [2018-10-01 00:36:11,893 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:11,893 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:11,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:11,894 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:11,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:11,907 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:36:11,907 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:36:11,907 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:36:11,918 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:36:12,266 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-01 00:36:12,267 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:12,269 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:12,828 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 00:36:12,848 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:36:12,848 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-01 00:36:12,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-01 00:36:12,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-01 00:36:12,848 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:12,849 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-10-01 00:36:16,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:16,218 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-01 00:36:16,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-01 00:36:16,218 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-10-01 00:36:16,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:16,219 INFO L225 Difference]: With dead ends: 34 [2018-10-01 00:36:16,219 INFO L226 Difference]: Without dead ends: 32 [2018-10-01 00:36:16,219 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:36:16,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-01 00:36:16,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-01 00:36:16,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-01 00:36:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-01 00:36:16,224 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-10-01 00:36:16,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:16,225 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-01 00:36:16,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-01 00:36:16,225 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-01 00:36:16,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-01 00:36:16,225 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:16,225 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-10-01 00:36:16,226 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:16,226 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:16,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1498753853, now seen corresponding path program 28 times [2018-10-01 00:36:16,226 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:16,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:16,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:16,227 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:16,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:16,233 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:36:16,234 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:36:16,234 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:36:16,248 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:36:16,299 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:36:16,299 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:16,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:16,920 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 00:36:16,940 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:36:16,941 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-01 00:36:16,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-01 00:36:16,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-01 00:36:16,941 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:16,941 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-10-01 00:36:20,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:20,514 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-01 00:36:20,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-01 00:36:20,515 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-10-01 00:36:20,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:20,515 INFO L225 Difference]: With dead ends: 35 [2018-10-01 00:36:20,515 INFO L226 Difference]: Without dead ends: 33 [2018-10-01 00:36:20,516 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:36:20,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-01 00:36:20,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-01 00:36:20,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-01 00:36:20,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-01 00:36:20,521 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-10-01 00:36:20,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:20,521 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-01 00:36:20,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-01 00:36:20,521 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-01 00:36:20,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-01 00:36:20,522 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:20,522 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-10-01 00:36:20,522 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:20,522 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:20,523 INFO L82 PathProgramCache]: Analyzing trace with hash 783272620, now seen corresponding path program 29 times [2018-10-01 00:36:20,523 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:20,523 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:20,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:20,524 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:20,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:20,530 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:36:20,531 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:36:20,531 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:36:20,544 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:36:20,597 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-01 00:36:20,597 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:20,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:21,222 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 00:36:21,243 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:36:21,243 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-01 00:36:21,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-01 00:36:21,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-01 00:36:21,243 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:21,244 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-10-01 00:36:25,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:25,203 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-01 00:36:25,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-01 00:36:25,204 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-10-01 00:36:25,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:25,205 INFO L225 Difference]: With dead ends: 36 [2018-10-01 00:36:25,205 INFO L226 Difference]: Without dead ends: 34 [2018-10-01 00:36:25,205 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:36:25,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-01 00:36:25,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-01 00:36:25,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-01 00:36:25,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-01 00:36:25,210 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-10-01 00:36:25,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:25,210 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-01 00:36:25,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-01 00:36:25,210 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-01 00:36:25,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-01 00:36:25,211 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:25,211 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-10-01 00:36:25,211 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:25,211 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:25,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1488350749, now seen corresponding path program 30 times [2018-10-01 00:36:25,211 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:25,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:25,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:25,212 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:25,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:25,220 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:36:25,220 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:36:25,220 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:36:25,251 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:36:25,391 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-01 00:36:25,391 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:25,395 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:26,159 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:26,180 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:36:26,180 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-01 00:36:26,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-01 00:36:26,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-01 00:36:26,181 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:26,181 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-10-01 00:36:30,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:30,313 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-01 00:36:30,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-01 00:36:30,313 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-10-01 00:36:30,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:30,314 INFO L225 Difference]: With dead ends: 37 [2018-10-01 00:36:30,314 INFO L226 Difference]: Without dead ends: 35 [2018-10-01 00:36:30,315 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:36:30,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-01 00:36:30,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-01 00:36:30,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-01 00:36:30,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-01 00:36:30,319 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-10-01 00:36:30,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:30,319 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-01 00:36:30,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-01 00:36:30,319 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-01 00:36:30,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-01 00:36:30,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:30,320 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-10-01 00:36:30,320 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:30,320 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:30,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1105768844, now seen corresponding path program 31 times [2018-10-01 00:36:30,320 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:30,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:30,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:30,321 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:30,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:30,328 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:36:30,328 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:36:30,328 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:36:30,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:36:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:30,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:31,174 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 00:36:31,194 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:36:31,195 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-01 00:36:31,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-01 00:36:31,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-01 00:36:31,195 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:31,195 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-10-01 00:36:35,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:35,801 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-01 00:36:35,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-01 00:36:35,801 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-10-01 00:36:35,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:35,802 INFO L225 Difference]: With dead ends: 38 [2018-10-01 00:36:35,802 INFO L226 Difference]: Without dead ends: 36 [2018-10-01 00:36:35,802 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:36:35,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-01 00:36:35,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-01 00:36:35,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-01 00:36:35,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-01 00:36:35,806 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-10-01 00:36:35,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:35,806 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-01 00:36:35,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-01 00:36:35,806 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-01 00:36:35,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-01 00:36:35,807 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:35,807 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-10-01 00:36:35,807 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:35,807 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:35,807 INFO L82 PathProgramCache]: Analyzing trace with hash -80902397, now seen corresponding path program 32 times [2018-10-01 00:36:35,808 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:35,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:35,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:35,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:36:35,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:35,815 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:36:35,815 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:36:35,815 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:36:35,827 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:36:35,904 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:36:35,904 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:35,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:37,430 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 00:36:37,450 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:36:37,450 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-01 00:36:37,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-01 00:36:37,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-01 00:36:37,451 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:37,451 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-10-01 00:36:42,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:42,127 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-01 00:36:42,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-01 00:36:42,128 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-10-01 00:36:42,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:42,128 INFO L225 Difference]: With dead ends: 39 [2018-10-01 00:36:42,128 INFO L226 Difference]: Without dead ends: 37 [2018-10-01 00:36:42,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:36:42,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-01 00:36:42,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-01 00:36:42,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-01 00:36:42,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-01 00:36:42,132 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-10-01 00:36:42,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:42,132 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-01 00:36:42,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-01 00:36:42,132 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-01 00:36:42,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-01 00:36:42,133 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:42,133 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-10-01 00:36:42,133 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:42,133 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:42,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1786994796, now seen corresponding path program 33 times [2018-10-01 00:36:42,133 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:42,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:42,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:42,134 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:42,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:42,140 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:36:42,140 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:36:42,141 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:36:42,156 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:36:42,812 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-01 00:36:42,812 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:42,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:43,533 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 00:36:43,554 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:36:43,554 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-10-01 00:36:43,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-01 00:36:43,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-01 00:36:43,554 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:43,555 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-10-01 00:36:48,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:48,462 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-01 00:36:48,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-01 00:36:48,462 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-10-01 00:36:48,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:48,463 INFO L225 Difference]: With dead ends: 40 [2018-10-01 00:36:48,463 INFO L226 Difference]: Without dead ends: 38 [2018-10-01 00:36:48,463 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:36:48,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-01 00:36:48,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-01 00:36:48,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-01 00:36:48,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-01 00:36:48,468 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-10-01 00:36:48,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:48,468 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-01 00:36:48,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-01 00:36:48,468 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-01 00:36:48,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-01 00:36:48,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:48,468 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-10-01 00:36:48,469 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:48,469 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:48,469 INFO L82 PathProgramCache]: Analyzing trace with hash -437734365, now seen corresponding path program 34 times [2018-10-01 00:36:48,469 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:48,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:48,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:48,470 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:48,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:48,476 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:36:48,476 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:36:48,476 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:36:48,489 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:36:48,543 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:36:48,544 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:48,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:49,393 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 00:36:49,413 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:36:49,413 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-10-01 00:36:49,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-01 00:36:49,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-01 00:36:49,413 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:49,413 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-10-01 00:36:54,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:54,671 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-01 00:36:54,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-01 00:36:54,672 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-10-01 00:36:54,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:54,672 INFO L225 Difference]: With dead ends: 41 [2018-10-01 00:36:54,672 INFO L226 Difference]: Without dead ends: 39 [2018-10-01 00:36:54,673 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:36:54,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-01 00:36:54,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-01 00:36:54,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-01 00:36:54,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-01 00:36:54,676 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-10-01 00:36:54,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:54,676 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-01 00:36:54,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-01 00:36:54,676 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-01 00:36:54,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-01 00:36:54,677 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:54,677 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-10-01 00:36:54,677 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:54,677 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:54,678 INFO L82 PathProgramCache]: Analyzing trace with hash -684861620, now seen corresponding path program 35 times [2018-10-01 00:36:54,678 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:54,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:54,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:54,678 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:54,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:54,685 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:36:54,685 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:36:54,686 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:36:54,695 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:36:54,761 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-01 00:36:54,762 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:54,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:55,763 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 00:36:55,783 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:36:55,783 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-10-01 00:36:55,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-01 00:36:55,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-01 00:36:55,784 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:55,784 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-10-01 00:37:01,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:01,386 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-01 00:37:01,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-01 00:37:01,386 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-10-01 00:37:01,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:01,387 INFO L225 Difference]: With dead ends: 42 [2018-10-01 00:37:01,387 INFO L226 Difference]: Without dead ends: 40 [2018-10-01 00:37:01,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:37:01,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-01 00:37:01,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-01 00:37:01,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-01 00:37:01,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-01 00:37:01,390 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-10-01 00:37:01,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:01,390 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-01 00:37:01,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-01 00:37:01,390 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-01 00:37:01,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-01 00:37:01,390 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:01,391 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-10-01 00:37:01,391 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:01,391 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:01,391 INFO L82 PathProgramCache]: Analyzing trace with hash 244128067, now seen corresponding path program 36 times [2018-10-01 00:37:01,391 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:01,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:01,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:01,392 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:01,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:01,398 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:37:01,398 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:37:01,398 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-01 00:37:01,408 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:37:01,622 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-01 00:37:01,622 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:01,627 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:02,657 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 00:37:02,678 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:37:02,679 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-10-01 00:37:02,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-01 00:37:02,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-01 00:37:02,679 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:02,679 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-10-01 00:37:08,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:08,514 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-01 00:37:08,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-01 00:37:08,514 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-10-01 00:37:08,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:08,515 INFO L225 Difference]: With dead ends: 43 [2018-10-01 00:37:08,515 INFO L226 Difference]: Without dead ends: 41 [2018-10-01 00:37:08,515 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:37:08,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-01 00:37:08,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-01 00:37:08,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-01 00:37:08,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-01 00:37:08,519 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-10-01 00:37:08,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:08,519 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-01 00:37:08,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-01 00:37:08,519 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-01 00:37:08,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-01 00:37:08,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:08,520 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-10-01 00:37:08,520 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:08,520 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:08,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1021962708, now seen corresponding path program 37 times [2018-10-01 00:37:08,520 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:08,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:08,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:08,521 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:08,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:08,527 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:37:08,528 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:37:08,528 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:37:08,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:37:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:08,599 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:09,493 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 00:37:09,512 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:37:09,512 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-01 00:37:09,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-01 00:37:09,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-01 00:37:09,513 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:09,513 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-10-01 00:37:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:15,693 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-01 00:37:15,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-01 00:37:15,694 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-10-01 00:37:15,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:15,694 INFO L225 Difference]: With dead ends: 44 [2018-10-01 00:37:15,694 INFO L226 Difference]: Without dead ends: 42 [2018-10-01 00:37:15,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:37:15,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-01 00:37:15,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-01 00:37:15,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-01 00:37:15,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-01 00:37:15,698 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-10-01 00:37:15,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:15,698 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-01 00:37:15,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-01 00:37:15,699 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-01 00:37:15,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-01 00:37:15,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:15,699 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-10-01 00:37:15,699 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:15,700 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:15,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1616071069, now seen corresponding path program 38 times [2018-10-01 00:37:15,700 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:15,700 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:15,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:15,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:37:15,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:15,709 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:37:15,710 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:37:15,710 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:37:15,721 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:37:15,781 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:37:15,781 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:15,785 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:16,726 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 00:37:16,749 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:37:16,749 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-01 00:37:16,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-01 00:37:16,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-01 00:37:16,749 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:16,750 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-10-01 00:37:23,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:23,395 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-01 00:37:23,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-01 00:37:23,396 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-10-01 00:37:23,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:23,397 INFO L225 Difference]: With dead ends: 45 [2018-10-01 00:37:23,397 INFO L226 Difference]: Without dead ends: 43 [2018-10-01 00:37:23,397 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:37:23,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-01 00:37:23,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-01 00:37:23,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-01 00:37:23,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-01 00:37:23,401 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-10-01 00:37:23,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:23,401 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-01 00:37:23,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-01 00:37:23,401 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-01 00:37:23,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-01 00:37:23,401 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:23,401 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-10-01 00:37:23,402 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:23,402 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:23,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1441406220, now seen corresponding path program 39 times [2018-10-01 00:37:23,402 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:23,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:23,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:23,403 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:23,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:23,408 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:37:23,408 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:37:23,408 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:37:23,428 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:37:24,929 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-01 00:37:24,929 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:24,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:26,156 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 00:37:26,175 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:37:26,176 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-01 00:37:26,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-01 00:37:26,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-01 00:37:26,176 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:26,176 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-10-01 00:37:32,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:32,852 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-01 00:37:32,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-01 00:37:32,853 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-10-01 00:37:32,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:32,853 INFO L225 Difference]: With dead ends: 46 [2018-10-01 00:37:32,853 INFO L226 Difference]: Without dead ends: 44 [2018-10-01 00:37:32,853 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:37:32,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-01 00:37:32,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-01 00:37:32,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-01 00:37:32,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-01 00:37:32,856 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-10-01 00:37:32,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:32,856 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-01 00:37:32,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-01 00:37:32,857 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-01 00:37:32,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-01 00:37:32,857 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:32,857 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-10-01 00:37:32,857 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:32,858 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:32,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1733921667, now seen corresponding path program 40 times [2018-10-01 00:37:32,858 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:32,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:32,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:32,859 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:32,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:32,865 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:37:32,865 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:37:32,865 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:37:32,876 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:37:32,945 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:37:32,946 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:32,949 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:33,982 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 00:37:34,003 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:37:34,003 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-10-01 00:37:34,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-01 00:37:34,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-01 00:37:34,003 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:34,004 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-10-01 00:37:41,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:41,373 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-01 00:37:41,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-01 00:37:41,374 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-10-01 00:37:41,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:41,374 INFO L225 Difference]: With dead ends: 47 [2018-10-01 00:37:41,374 INFO L226 Difference]: Without dead ends: 45 [2018-10-01 00:37:41,375 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:37:41,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-01 00:37:41,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-01 00:37:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-01 00:37:41,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-01 00:37:41,377 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-10-01 00:37:41,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:41,377 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-01 00:37:41,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-01 00:37:41,377 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-01 00:37:41,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-01 00:37:41,378 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:41,378 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-10-01 00:37:41,378 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:41,378 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:41,378 INFO L82 PathProgramCache]: Analyzing trace with hash -2083001364, now seen corresponding path program 41 times [2018-10-01 00:37:41,378 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:41,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:41,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:41,379 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:41,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:41,385 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:37:41,385 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:37:41,385 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:37:41,394 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:37:41,482 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-01 00:37:41,482 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:41,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:42,853 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 00:37:42,875 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:37:42,875 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-01 00:37:42,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-01 00:37:42,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-01 00:37:42,876 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:42,876 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-10-01 00:37:50,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:50,312 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-10-01 00:37:50,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-01 00:37:50,312 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-10-01 00:37:50,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:50,312 INFO L225 Difference]: With dead ends: 48 [2018-10-01 00:37:50,312 INFO L226 Difference]: Without dead ends: 46 [2018-10-01 00:37:50,313 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:37:50,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-01 00:37:50,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-01 00:37:50,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-01 00:37:50,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-01 00:37:50,317 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-10-01 00:37:50,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:50,317 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-01 00:37:50,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-01 00:37:50,317 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-01 00:37:50,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-01 00:37:50,318 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:50,318 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-10-01 00:37:50,318 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:50,318 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:50,318 INFO L82 PathProgramCache]: Analyzing trace with hash -148531037, now seen corresponding path program 42 times [2018-10-01 00:37:50,318 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:50,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:50,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:50,319 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:50,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:50,324 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:37:50,324 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:37:50,324 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:37:50,332 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:37:50,803 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-01 00:37:50,803 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:50,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:53,139 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 00:37:53,160 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:37:53,160 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-10-01 00:37:53,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-01 00:37:53,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-01 00:37:53,161 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:53,161 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-10-01 00:38:00,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:00,918 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-01 00:38:00,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-01 00:38:00,919 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-10-01 00:38:00,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:00,919 INFO L225 Difference]: With dead ends: 49 [2018-10-01 00:38:00,919 INFO L226 Difference]: Without dead ends: 47 [2018-10-01 00:38:00,920 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:38:00,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-01 00:38:00,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-01 00:38:00,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-01 00:38:00,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-01 00:38:00,923 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-10-01 00:38:00,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:00,923 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-01 00:38:00,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-01 00:38:00,924 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-01 00:38:00,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-01 00:38:00,924 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:00,924 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-10-01 00:38:00,924 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:00,925 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:00,925 INFO L82 PathProgramCache]: Analyzing trace with hash -309493044, now seen corresponding path program 43 times [2018-10-01 00:38:00,925 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:00,925 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:00,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:00,925 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:00,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:00,931 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:38:00,931 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:38:00,931 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:38:00,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:01,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:02,767 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 00:38:02,787 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:38:02,788 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-10-01 00:38:02,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-01 00:38:02,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-01 00:38:02,788 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:02,788 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-10-01 00:38:11,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:11,096 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-01 00:38:11,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-01 00:38:11,097 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-10-01 00:38:11,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:11,098 INFO L225 Difference]: With dead ends: 50 [2018-10-01 00:38:11,098 INFO L226 Difference]: Without dead ends: 48 [2018-10-01 00:38:11,098 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:38:11,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-01 00:38:11,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-01 00:38:11,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-01 00:38:11,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-01 00:38:11,102 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-10-01 00:38:11,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:11,103 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-01 00:38:11,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-01 00:38:11,103 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-01 00:38:11,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-01 00:38:11,103 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:11,104 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-10-01 00:38:11,104 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:11,104 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:11,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1004347965, now seen corresponding path program 44 times [2018-10-01 00:38:11,104 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:11,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:11,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:11,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:11,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:11,111 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:38:11,112 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:38:11,112 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:38:11,126 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:38:11,237 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:38:11,237 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:11,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:12,922 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:12,943 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:38:12,943 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-10-01 00:38:12,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-01 00:38:12,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-01 00:38:12,944 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:12,944 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-10-01 00:38:21,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:21,522 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-01 00:38:21,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-01 00:38:21,522 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-10-01 00:38:21,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:21,523 INFO L225 Difference]: With dead ends: 51 [2018-10-01 00:38:21,523 INFO L226 Difference]: Without dead ends: 49 [2018-10-01 00:38:21,523 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:38:21,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-01 00:38:21,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-01 00:38:21,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-01 00:38:21,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-01 00:38:21,527 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-10-01 00:38:21,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:21,527 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-01 00:38:21,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-01 00:38:21,527 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-01 00:38:21,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-01 00:38:21,528 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:21,528 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-10-01 00:38:21,528 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:21,528 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:21,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1070014036, now seen corresponding path program 45 times [2018-10-01 00:38:21,529 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:21,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:21,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:21,530 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:21,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:21,536 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:38:21,536 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:38:21,536 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 (exit command is (exit), workingDir is null) [2018-10-01 00:38:21,553 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:38:24,121 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-01 00:38:24,121 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:24,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:25,453 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 00:38:25,473 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:38:25,473 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-01 00:38:25,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-01 00:38:25,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-01 00:38:25,474 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:25,474 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-10-01 00:38:34,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:34,539 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-01 00:38:34,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-01 00:38:34,539 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-10-01 00:38:34,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:34,539 INFO L225 Difference]: With dead ends: 52 [2018-10-01 00:38:34,540 INFO L226 Difference]: Without dead ends: 50 [2018-10-01 00:38:34,540 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:38:34,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-01 00:38:34,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-01 00:38:34,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-01 00:38:34,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-01 00:38:34,545 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-10-01 00:38:34,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:34,545 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-01 00:38:34,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-01 00:38:34,545 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-01 00:38:34,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-01 00:38:34,545 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:34,546 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-10-01 00:38:34,546 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:34,546 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:34,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1189305059, now seen corresponding path program 46 times [2018-10-01 00:38:34,546 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:34,546 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:34,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:34,547 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:34,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:34,553 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:38:34,553 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:38:34,553 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 (exit command is (exit), workingDir is null) [2018-10-01 00:38:34,566 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:38:34,655 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:38:34,655 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:34,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:36,096 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 00:38:36,116 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:38:36,116 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-10-01 00:38:36,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-01 00:38:36,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-01 00:38:36,116 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:36,116 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-10-01 00:38:45,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:45,557 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-01 00:38:45,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-01 00:38:45,557 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-10-01 00:38:45,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:45,558 INFO L225 Difference]: With dead ends: 53 [2018-10-01 00:38:45,558 INFO L226 Difference]: Without dead ends: 51 [2018-10-01 00:38:45,558 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:38:45,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-01 00:38:45,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-01 00:38:45,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-01 00:38:45,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-01 00:38:45,561 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-10-01 00:38:45,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:45,562 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-01 00:38:45,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-01 00:38:45,562 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-01 00:38:45,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-01 00:38:45,562 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:45,562 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-10-01 00:38:45,563 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:45,563 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:45,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1786247028, now seen corresponding path program 47 times [2018-10-01 00:38:45,563 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:45,563 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:45,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:45,564 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:45,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:45,570 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:38:45,570 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:38:45,570 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:38:45,585 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:38:45,701 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-01 00:38:45,702 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:45,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:47,126 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 00:38:47,146 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:38:47,146 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-10-01 00:38:47,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-01 00:38:47,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-01 00:38:47,146 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:47,146 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-10-01 00:38:57,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:57,298 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-01 00:38:57,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-01 00:38:57,299 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-10-01 00:38:57,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:57,299 INFO L225 Difference]: With dead ends: 54 [2018-10-01 00:38:57,299 INFO L226 Difference]: Without dead ends: 52 [2018-10-01 00:38:57,300 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:38:57,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-01 00:38:57,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-01 00:38:57,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-01 00:38:57,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-01 00:38:57,304 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-10-01 00:38:57,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:57,304 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-01 00:38:57,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-01 00:38:57,304 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-01 00:38:57,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-01 00:38:57,305 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:57,305 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-10-01 00:38:57,305 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:57,305 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:57,305 INFO L82 PathProgramCache]: Analyzing trace with hash 460918787, now seen corresponding path program 48 times [2018-10-01 00:38:57,305 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:57,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:57,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:57,306 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:57,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:57,313 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:38:57,313 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:38:57,313 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:38:57,322 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:38:58,014 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-01 00:38:58,014 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:58,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:59,591 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 00:38:59,613 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:38:59,613 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-10-01 00:38:59,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-01 00:38:59,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-01 00:38:59,614 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:59,614 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-10-01 00:39:10,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:10,524 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-01 00:39:10,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-01 00:39:10,524 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-10-01 00:39:10,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:10,525 INFO L225 Difference]: With dead ends: 55 [2018-10-01 00:39:10,525 INFO L226 Difference]: Without dead ends: 53 [2018-10-01 00:39:10,525 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:39:10,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-01 00:39:10,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-01 00:39:10,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-01 00:39:10,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-01 00:39:10,529 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-10-01 00:39:10,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:10,530 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-01 00:39:10,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-01 00:39:10,530 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-01 00:39:10,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-01 00:39:10,530 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:10,531 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-10-01 00:39:10,531 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:10,531 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:10,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1403582316, now seen corresponding path program 49 times [2018-10-01 00:39:10,531 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:10,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:10,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:10,532 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:10,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:10,538 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:39:10,538 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:39:10,538 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:39:10,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:10,651 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:12,258 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 00:39:12,280 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:39:12,280 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-10-01 00:39:12,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-01 00:39:12,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-01 00:39:12,280 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:12,281 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-10-01 00:39:23,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:23,494 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-10-01 00:39:23,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-01 00:39:23,495 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-10-01 00:39:23,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:23,495 INFO L225 Difference]: With dead ends: 56 [2018-10-01 00:39:23,496 INFO L226 Difference]: Without dead ends: 54 [2018-10-01 00:39:23,496 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:39:23,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-01 00:39:23,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-01 00:39:23,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-01 00:39:23,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-01 00:39:23,500 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-10-01 00:39:23,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:23,500 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-01 00:39:23,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-01 00:39:23,500 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-01 00:39:23,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-01 00:39:23,501 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:23,501 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-10-01 00:39:23,501 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:23,502 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:23,502 INFO L82 PathProgramCache]: Analyzing trace with hash 561380643, now seen corresponding path program 50 times [2018-10-01 00:39:23,502 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:23,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:23,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:23,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:23,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:23,511 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:39:23,511 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:39:23,511 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:39:23,521 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:39:23,652 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:39:23,653 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:23,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:25,964 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 00:39:25,984 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:39:25,984 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-01 00:39:25,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-01 00:39:25,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-01 00:39:25,985 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:25,985 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-10-01 00:39:37,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:37,169 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-01 00:39:37,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-01 00:39:37,169 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-10-01 00:39:37,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:37,170 INFO L225 Difference]: With dead ends: 57 [2018-10-01 00:39:37,170 INFO L226 Difference]: Without dead ends: 55 [2018-10-01 00:39:37,170 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:39:37,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-01 00:39:37,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-01 00:39:37,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-01 00:39:37,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-01 00:39:37,173 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-10-01 00:39:37,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:37,174 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-01 00:39:37,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-01 00:39:37,174 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-01 00:39:37,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-01 00:39:37,174 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:37,176 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-10-01 00:39:37,176 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:37,176 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:37,176 INFO L82 PathProgramCache]: Analyzing trace with hash 222932556, now seen corresponding path program 51 times [2018-10-01 00:39:37,176 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:37,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:37,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:37,177 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:37,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:37,184 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:39:37,184 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:39:37,185 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:39:37,196 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:39:41,572 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-01 00:39:41,572 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:41,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:43,234 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 00:39:43,254 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:39:43,254 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-10-01 00:39:43,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-01 00:39:43,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-01 00:39:43,254 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:43,255 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-10-01 00:39:55,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:55,052 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-01 00:39:55,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-01 00:39:55,053 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-10-01 00:39:55,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:55,054 INFO L225 Difference]: With dead ends: 58 [2018-10-01 00:39:55,054 INFO L226 Difference]: Without dead ends: 56 [2018-10-01 00:39:55,054 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:39:55,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-01 00:39:55,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-01 00:39:55,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-01 00:39:55,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-01 00:39:55,059 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-10-01 00:39:55,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:55,059 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-01 00:39:55,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-01 00:39:55,059 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-01 00:39:55,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-01 00:39:55,059 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:55,060 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-10-01 00:39:55,060 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:55,060 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:55,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1679023549, now seen corresponding path program 52 times [2018-10-01 00:39:55,060 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:55,060 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:55,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:55,061 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:55,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:55,067 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:39:55,067 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:39:55,068 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:39:55,083 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:39:55,194 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:39:55,194 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:55,198 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:56,918 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 00:39:56,939 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:39:56,940 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-10-01 00:39:56,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-01 00:39:56,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-01 00:39:56,940 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:56,940 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-10-01 00:40:09,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:09,425 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-01 00:40:09,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-01 00:40:09,425 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-10-01 00:40:09,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:09,426 INFO L225 Difference]: With dead ends: 59 [2018-10-01 00:40:09,426 INFO L226 Difference]: Without dead ends: 57 [2018-10-01 00:40:09,426 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:40:09,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-01 00:40:09,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-01 00:40:09,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-01 00:40:09,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-01 00:40:09,430 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-10-01 00:40:09,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:09,430 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-01 00:40:09,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-01 00:40:09,430 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-01 00:40:09,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-01 00:40:09,431 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:09,431 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-10-01 00:40:09,431 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:09,431 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:09,431 INFO L82 PathProgramCache]: Analyzing trace with hash -510120660, now seen corresponding path program 53 times [2018-10-01 00:40:09,431 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:09,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:09,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:09,432 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:09,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:09,439 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:40:09,440 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:40:09,440 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:40:09,457 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:40:09,670 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-01 00:40:09,671 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:09,677 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:11,580 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 00:40:11,601 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:40:11,601 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-10-01 00:40:11,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-01 00:40:11,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-01 00:40:11,602 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:11,602 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-10-01 00:40:23,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:23,924 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-10-01 00:40:23,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-01 00:40:23,925 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-10-01 00:40:23,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:23,925 INFO L225 Difference]: With dead ends: 60 [2018-10-01 00:40:23,926 INFO L226 Difference]: Without dead ends: 58 [2018-10-01 00:40:23,926 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:40:23,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-01 00:40:23,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-01 00:40:23,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-01 00:40:23,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-01 00:40:23,929 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-10-01 00:40:23,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:23,929 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-01 00:40:23,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-01 00:40:23,929 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-01 00:40:23,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-01 00:40:23,929 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:23,930 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-10-01 00:40:23,930 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:23,930 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:23,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1366130531, now seen corresponding path program 54 times [2018-10-01 00:40:23,930 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:23,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:23,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:23,931 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:23,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:23,936 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:40:23,937 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:40:23,937 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:40:23,947 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:40:25,283 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-01 00:40:25,284 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:25,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:27,144 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 00:40:27,165 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:40:27,165 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-10-01 00:40:27,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-01 00:40:27,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-01 00:40:27,165 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:27,166 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-10-01 00:40:39,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:39,775 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-01 00:40:39,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-01 00:40:39,776 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-10-01 00:40:39,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:39,777 INFO L225 Difference]: With dead ends: 61 [2018-10-01 00:40:39,777 INFO L226 Difference]: Without dead ends: 59 [2018-10-01 00:40:39,777 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:40:39,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-01 00:40:39,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-01 00:40:39,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-01 00:40:39,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-01 00:40:39,781 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-10-01 00:40:39,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:39,781 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-01 00:40:39,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-01 00:40:39,781 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-01 00:40:39,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-01 00:40:39,782 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:39,782 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-10-01 00:40:39,782 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:39,782 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:39,782 INFO L82 PathProgramCache]: Analyzing trace with hash -599624692, now seen corresponding path program 55 times [2018-10-01 00:40:39,783 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:39,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:39,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:39,783 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:39,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:39,790 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:40:39,790 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:40:39,790 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:40:39,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:39,929 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:42,064 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 00:40:42,084 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:40:42,084 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-01 00:40:42,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-01 00:40:42,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-01 00:40:42,085 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:42,085 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-10-01 00:40:55,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:55,330 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-01 00:40:55,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-01 00:40:55,330 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-10-01 00:40:55,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:55,331 INFO L225 Difference]: With dead ends: 62 [2018-10-01 00:40:55,331 INFO L226 Difference]: Without dead ends: 60 [2018-10-01 00:40:55,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:40:55,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-01 00:40:55,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-01 00:40:55,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-01 00:40:55,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-01 00:40:55,336 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-10-01 00:40:55,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:55,336 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-01 00:40:55,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-01 00:40:55,336 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-01 00:40:55,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-01 00:40:55,336 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:55,336 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-10-01 00:40:55,336 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:55,337 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:55,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1408494461, now seen corresponding path program 56 times [2018-10-01 00:40:55,337 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:55,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:55,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:55,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:55,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:55,346 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:40:55,347 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:40:55,347 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:40:55,356 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:40:55,479 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:40:55,479 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:55,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:57,633 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 00:40:57,654 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:40:57,654 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-10-01 00:40:57,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-01 00:40:57,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-01 00:40:57,655 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:57,655 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-10-01 00:41:11,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:11,456 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-01 00:41:11,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-01 00:41:11,456 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-10-01 00:41:11,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:11,457 INFO L225 Difference]: With dead ends: 63 [2018-10-01 00:41:11,457 INFO L226 Difference]: Without dead ends: 61 [2018-10-01 00:41:11,457 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:41:11,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-01 00:41:11,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-01 00:41:11,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-01 00:41:11,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-01 00:41:11,461 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-10-01 00:41:11,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:11,461 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-01 00:41:11,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-01 00:41:11,462 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-01 00:41:11,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-01 00:41:11,462 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:11,462 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-10-01 00:41:11,462 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:11,463 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:11,463 INFO L82 PathProgramCache]: Analyzing trace with hash -713653524, now seen corresponding path program 57 times [2018-10-01 00:41:11,463 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:11,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:11,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:11,464 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:11,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:11,470 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:41:11,470 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:41:11,470 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:41:11,488 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:41:19,098 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-01 00:41:19,099 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:19,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:21,380 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 00:41:21,400 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:41:21,400 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-10-01 00:41:21,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-01 00:41:21,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-01 00:41:21,401 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:21,401 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-10-01 00:41:35,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:35,574 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-10-01 00:41:35,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-01 00:41:35,575 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-10-01 00:41:35,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:35,576 INFO L225 Difference]: With dead ends: 64 [2018-10-01 00:41:35,576 INFO L226 Difference]: Without dead ends: 62 [2018-10-01 00:41:35,576 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:41:35,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-01 00:41:35,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-01 00:41:35,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-01 00:41:35,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-01 00:41:35,582 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-10-01 00:41:35,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:35,582 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-01 00:41:35,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-01 00:41:35,582 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-01 00:41:35,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-01 00:41:35,582 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:35,582 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-10-01 00:41:35,583 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:35,583 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:35,583 INFO L82 PathProgramCache]: Analyzing trace with hash -648420957, now seen corresponding path program 58 times [2018-10-01 00:41:35,583 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:35,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:35,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:35,584 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:35,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:35,590 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:41:35,590 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:41:35,591 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:41:35,607 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:41:35,747 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:41:35,748 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:35,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:38,120 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 00:41:38,141 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:41:38,142 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-10-01 00:41:38,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-01 00:41:38,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-01 00:41:38,142 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:38,142 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-10-01 00:41:52,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:52,817 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-01 00:41:52,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-01 00:41:52,818 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-10-01 00:41:52,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:52,819 INFO L225 Difference]: With dead ends: 65 [2018-10-01 00:41:52,819 INFO L226 Difference]: Without dead ends: 63 [2018-10-01 00:41:52,819 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:41:52,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-01 00:41:52,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-01 00:41:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-01 00:41:52,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-01 00:41:52,824 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-10-01 00:41:52,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:52,825 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-01 00:41:52,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-01 00:41:52,825 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-01 00:41:52,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-01 00:41:52,825 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:52,825 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-10-01 00:41:52,826 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:52,826 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:52,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1373788620, now seen corresponding path program 59 times [2018-10-01 00:41:52,826 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:52,826 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:52,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:52,827 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:52,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:52,833 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:41:52,834 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:41:52,834 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:41:52,858 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:41:53,148 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-01 00:41:53,148 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:53,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:56,004 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 00:41:56,024 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:41:56,024 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-10-01 00:41:56,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-01 00:41:56,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-01 00:41:56,025 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:56,025 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-10-01 00:42:12,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:12,098 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-10-01 00:42:12,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-01 00:42:12,099 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-10-01 00:42:12,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:12,100 INFO L225 Difference]: With dead ends: 66 [2018-10-01 00:42:12,100 INFO L226 Difference]: Without dead ends: 64 [2018-10-01 00:42:12,100 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time [2018-10-01 00:42:12,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-01 00:42:12,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-01 00:42:12,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-01 00:42:12,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-01 00:42:12,104 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-10-01 00:42:12,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:12,104 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-01 00:42:12,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-01 00:42:12,104 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-01 00:42:12,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-01 00:42:12,104 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:12,104 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-10-01 00:42:12,105 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:12,105 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:12,105 INFO L82 PathProgramCache]: Analyzing trace with hash -362223933, now seen corresponding path program 60 times [2018-10-01 00:42:12,105 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:12,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:12,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:12,106 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:12,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:12,113 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:42:12,113 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:42:12,113 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:42:12,124 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:42:13,986 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-01 00:42:13,986 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:13,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:16,221 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 00:42:16,242 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:42:16,242 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-01 00:42:16,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-01 00:42:16,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-01 00:42:16,243 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:16,243 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-10-01 00:42:32,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:32,170 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-01 00:42:32,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-01 00:42:32,171 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-10-01 00:42:32,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:32,172 INFO L225 Difference]: With dead ends: 67 [2018-10-01 00:42:32,172 INFO L226 Difference]: Without dead ends: 65 [2018-10-01 00:42:32,172 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:42:32,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-01 00:42:32,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-01 00:42:32,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-01 00:42:32,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-01 00:42:32,176 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-10-01 00:42:32,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:32,177 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-01 00:42:32,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-01 00:42:32,177 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-01 00:42:32,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-01 00:42:32,177 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:32,177 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-10-01 00:42:32,177 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:32,177 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:32,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1655961772, now seen corresponding path program 61 times [2018-10-01 00:42:32,178 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:32,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:32,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:32,178 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:32,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:32,184 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:42:32,184 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:42:32,185 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:42:32,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:32,354 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:34,929 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 00:42:34,950 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:42:34,950 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-10-01 00:42:34,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-01 00:42:34,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-01 00:42:34,950 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:34,951 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-10-01 00:42:51,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:51,303 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-01 00:42:51,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-01 00:42:51,304 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-10-01 00:42:51,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:51,304 INFO L225 Difference]: With dead ends: 68 [2018-10-01 00:42:51,304 INFO L226 Difference]: Without dead ends: 66 [2018-10-01 00:42:51,304 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:42:51,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-01 00:42:51,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-01 00:42:51,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-01 00:42:51,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-01 00:42:51,310 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-10-01 00:42:51,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:51,310 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-01 00:42:51,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-01 00:42:51,310 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-01 00:42:51,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-01 00:42:51,310 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:51,310 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-10-01 00:42:51,311 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:51,311 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:51,311 INFO L82 PathProgramCache]: Analyzing trace with hash -204790813, now seen corresponding path program 62 times [2018-10-01 00:42:51,311 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:51,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:51,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:51,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:51,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:51,318 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:42:51,318 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:42:51,319 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:42:51,333 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:42:51,485 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:42:51,485 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:51,491 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:54,014 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 00:42:54,034 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:42:54,035 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-10-01 00:42:54,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-01 00:42:54,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-01 00:42:54,035 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:54,035 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-10-01 00:43:10,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:10,791 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-01 00:43:10,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-01 00:43:10,791 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-10-01 00:43:10,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:10,792 INFO L225 Difference]: With dead ends: 69 [2018-10-01 00:43:10,792 INFO L226 Difference]: Without dead ends: 67 [2018-10-01 00:43:10,792 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:43:10,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-01 00:43:10,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-01 00:43:10,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-01 00:43:10,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-01 00:43:10,797 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-10-01 00:43:10,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:10,797 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-01 00:43:10,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-01 00:43:10,797 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-01 00:43:10,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-01 00:43:10,797 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:10,797 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-10-01 00:43:10,798 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:10,798 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:10,798 INFO L82 PathProgramCache]: Analyzing trace with hash -2053546100, now seen corresponding path program 63 times [2018-10-01 00:43:10,798 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:10,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:10,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:10,799 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:10,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:10,806 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:43:10,806 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:43:10,806 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:43:10,822 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:43:23,440 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-01 00:43:23,440 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:23,446 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:26,141 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 00:43:26,160 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:43:26,160 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-10-01 00:43:26,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-01 00:43:26,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-01 00:43:26,161 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:26,161 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-10-01 00:43:44,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:44,232 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-01 00:43:44,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-01 00:43:44,233 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-10-01 00:43:44,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:44,234 INFO L225 Difference]: With dead ends: 70 [2018-10-01 00:43:44,234 INFO L226 Difference]: Without dead ends: 68 [2018-10-01 00:43:44,234 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 00:43:44,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-01 00:43:44,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-01 00:43:44,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-01 00:43:44,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-01 00:43:44,244 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-10-01 00:43:44,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:44,245 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-01 00:43:44,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-01 00:43:44,245 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-01 00:43:44,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-01 00:43:44,245 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:44,246 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-10-01 00:43:44,246 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:44,246 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:44,246 INFO L82 PathProgramCache]: Analyzing trace with hash 764582147, now seen corresponding path program 64 times [2018-10-01 00:43:44,246 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:44,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:44,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:44,248 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:44,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:44,254 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:43:44,254 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:43:44,255 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:43:44,265 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:43:44,465 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:43:44,465 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:44,474 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:47,101 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 00:43:47,122 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:43:47,122 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-10-01 00:43:47,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-01 00:43:47,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-01 00:43:47,123 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:47,123 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-10-01 00:44:05,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:05,010 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-01 00:44:05,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-01 00:44:05,010 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-10-01 00:44:05,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:05,011 INFO L225 Difference]: With dead ends: 71 [2018-10-01 00:44:05,011 INFO L226 Difference]: Without dead ends: 69 [2018-10-01 00:44:05,011 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:44:05,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-01 00:44:05,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-01 00:44:05,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-01 00:44:05,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-01 00:44:05,014 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-10-01 00:44:05,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:05,015 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-01 00:44:05,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-01 00:44:05,015 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-01 00:44:05,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-01 00:44:05,015 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:05,015 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-10-01 00:44:05,016 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:05,016 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:05,016 INFO L82 PathProgramCache]: Analyzing trace with hash -2067755412, now seen corresponding path program 65 times [2018-10-01 00:44:05,016 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:05,016 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:05,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:05,016 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:05,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:05,022 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:44:05,023 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:44:05,023 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:44:05,031 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:44:05,309 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-01 00:44:05,309 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:05,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:09,472 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 00:44:09,493 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:44:09,493 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-10-01 00:44:09,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-01 00:44:09,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-01 00:44:09,494 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:09,494 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-10-01 00:44:27,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:27,864 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-10-01 00:44:27,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-01 00:44:27,864 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-10-01 00:44:27,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:27,865 INFO L225 Difference]: With dead ends: 72 [2018-10-01 00:44:27,865 INFO L226 Difference]: Without dead ends: 70 [2018-10-01 00:44:27,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s Time [2018-10-01 00:44:27,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-01 00:44:27,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-01 00:44:27,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-01 00:44:27,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-01 00:44:27,870 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-10-01 00:44:27,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:27,870 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-01 00:44:27,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-01 00:44:27,870 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-01 00:44:27,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-01 00:44:27,871 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:27,871 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-10-01 00:44:27,871 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:27,871 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:27,872 INFO L82 PathProgramCache]: Analyzing trace with hash 324093475, now seen corresponding path program 66 times [2018-10-01 00:44:27,872 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:27,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:27,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:27,873 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:27,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:27,878 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:44:27,878 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:44:27,879 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:44:27,893 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:44:31,249 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-01 00:44:31,249 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:31,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:36,165 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 00:44:36,186 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:44:36,187 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-10-01 00:44:36,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-01 00:44:36,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-01 00:44:36,192 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:36,192 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-10-01 00:44:54,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:54,918 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-01 00:44:54,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-01 00:44:54,919 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-10-01 00:44:54,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:54,919 INFO L225 Difference]: With dead ends: 73 [2018-10-01 00:44:54,919 INFO L226 Difference]: Without dead ends: 71 [2018-10-01 00:44:54,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s Time [2018-10-01 00:44:54,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-01 00:44:54,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-01 00:44:54,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-01 00:44:54,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-01 00:44:54,924 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-10-01 00:44:54,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:54,924 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-01 00:44:54,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-01 00:44:54,925 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-01 00:44:54,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-01 00:44:54,925 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:54,925 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-10-01 00:44:54,925 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:54,926 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:54,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1456964940, now seen corresponding path program 67 times [2018-10-01 00:44:54,926 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:54,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:54,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:54,927 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:54,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:54,933 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:44:54,933 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:44:54,934 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:44:54,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:44:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:55,165 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:58,268 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 00:44:58,289 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:44:58,289 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-10-01 00:44:58,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-01 00:44:58,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-01 00:44:58,289 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:58,289 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-10-01 00:45:18,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:18,591 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-01 00:45:18,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-01 00:45:18,591 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-10-01 00:45:18,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:18,592 INFO L225 Difference]: With dead ends: 74 [2018-10-01 00:45:18,592 INFO L226 Difference]: Without dead ends: 72 [2018-10-01 00:45:18,592 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time [2018-10-01 00:45:18,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-01 00:45:18,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-01 00:45:18,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-01 00:45:18,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-01 00:45:18,596 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-10-01 00:45:18,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:18,596 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-01 00:45:18,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-01 00:45:18,596 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-01 00:45:18,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-01 00:45:18,597 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:18,597 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-10-01 00:45:18,597 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:18,597 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:18,597 INFO L82 PathProgramCache]: Analyzing trace with hash -2078725309, now seen corresponding path program 68 times [2018-10-01 00:45:18,597 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:18,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:18,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:18,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:45:18,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:18,603 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:45:18,603 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:45:18,603 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:45:18,614 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:45:18,832 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:45:18,832 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:18,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:22,059 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 00:45:22,080 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:45:22,080 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-10-01 00:45:22,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-01 00:45:22,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-01 00:45:22,081 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:22,081 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-10-01 00:45:42,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:42,592 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-01 00:45:42,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-01 00:45:42,593 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-10-01 00:45:42,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:42,593 INFO L225 Difference]: With dead ends: 75 [2018-10-01 00:45:42,593 INFO L226 Difference]: Without dead ends: 73 [2018-10-01 00:45:42,593 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time [2018-10-01 00:45:42,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-01 00:45:42,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-01 00:45:42,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-01 00:45:42,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-01 00:45:42,598 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-10-01 00:45:42,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:42,598 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-01 00:45:42,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-01 00:45:42,599 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-01 00:45:42,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-01 00:45:42,599 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:42,599 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-10-01 00:45:42,599 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:42,600 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:42,600 INFO L82 PathProgramCache]: Analyzing trace with hash -15973332, now seen corresponding path program 69 times [2018-10-01 00:45:42,600 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:42,600 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:42,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:42,601 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:42,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:42,607 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:45:42,608 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:45:42,608 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:45:42,621 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:46:02,029 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-01 00:46:02,029 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:02,036 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:05,347 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 00:46:05,367 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:46:05,368 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-10-01 00:46:05,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-01 00:46:05,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-01 00:46:05,368 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:05,368 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-10-01 00:46:27,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:27,360 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-01 00:46:27,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-01 00:46:27,361 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-10-01 00:46:27,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:27,361 INFO L225 Difference]: With dead ends: 76 [2018-10-01 00:46:27,361 INFO L226 Difference]: Without dead ends: 74 [2018-10-01 00:46:27,361 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time [2018-10-01 00:46:27,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-01 00:46:27,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-01 00:46:27,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-01 00:46:27,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-01 00:46:27,367 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-10-01 00:46:27,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:27,368 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-01 00:46:27,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-01 00:46:27,368 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-01 00:46:27,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-01 00:46:27,368 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:27,368 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-10-01 00:46:27,369 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:27,369 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:27,369 INFO L82 PathProgramCache]: Analyzing trace with hash -495171485, now seen corresponding path program 70 times [2018-10-01 00:46:27,369 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:27,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:27,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:27,370 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:27,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:27,377 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:46:27,378 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:46:27,378 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:46:27,388 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:46:27,769 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:46:27,769 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:27,776 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:31,129 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 00:46:31,151 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:46:31,151 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-10-01 00:46:31,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-01 00:46:31,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-01 00:46:31,152 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:31,152 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-10-01 00:46:52,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:52,650 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-01 00:46:52,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-01 00:46:52,650 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-10-01 00:46:52,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:52,651 INFO L225 Difference]: With dead ends: 77 [2018-10-01 00:46:52,651 INFO L226 Difference]: Without dead ends: 75 [2018-10-01 00:46:52,652 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time [2018-10-01 00:46:52,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-01 00:46:52,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-01 00:46:52,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-01 00:46:52,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-01 00:46:52,658 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-10-01 00:46:52,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:52,658 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-01 00:46:52,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-01 00:46:52,658 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-01 00:46:52,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-01 00:46:52,659 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:52,659 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-10-01 00:46:52,659 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:52,659 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:52,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1829554956, now seen corresponding path program 71 times [2018-10-01 00:46:52,660 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:52,660 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:52,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:52,660 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:52,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:52,667 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:46:52,667 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:46:52,667 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:46:52,680 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:46:53,021 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-01 00:46:53,022 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:53,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:56,395 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 00:46:56,416 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:46:56,416 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-10-01 00:46:56,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-01 00:46:56,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-01 00:46:56,417 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:56,417 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-10-01 00:47:18,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:18,224 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-10-01 00:47:18,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-01 00:47:18,225 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-10-01 00:47:18,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:18,226 INFO L225 Difference]: With dead ends: 78 [2018-10-01 00:47:18,226 INFO L226 Difference]: Without dead ends: 76 [2018-10-01 00:47:18,226 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time [2018-10-01 00:47:18,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-01 00:47:18,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-01 00:47:18,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-01 00:47:18,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-01 00:47:18,232 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-10-01 00:47:18,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:18,232 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-01 00:47:18,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-01 00:47:18,233 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-01 00:47:18,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-01 00:47:18,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:18,233 INFO L375 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-10-01 00:47:18,234 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:18,234 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:18,234 INFO L82 PathProgramCache]: Analyzing trace with hash 881630595, now seen corresponding path program 72 times [2018-10-01 00:47:18,234 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:18,234 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:18,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:18,235 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:18,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:18,242 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:47:18,242 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:47:18,242 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:47:18,252 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:47:22,609 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-01 00:47:22,610 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:22,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:26,101 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 00:47:26,121 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:47:26,121 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-10-01 00:47:26,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-01 00:47:26,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-01 00:47:26,122 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:26,122 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-10-01 00:47:49,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:49,596 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-01 00:47:49,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-01 00:47:49,597 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-10-01 00:47:49,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:49,598 INFO L225 Difference]: With dead ends: 79 [2018-10-01 00:47:49,598 INFO L226 Difference]: Without dead ends: 77 [2018-10-01 00:47:49,598 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time [2018-10-01 00:47:49,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-01 00:47:49,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-01 00:47:49,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-01 00:47:49,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-01 00:47:49,603 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-10-01 00:47:49,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:49,604 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-01 00:47:49,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-01 00:47:49,604 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-01 00:47:49,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-01 00:47:49,604 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:49,604 INFO L375 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-10-01 00:47:49,605 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:49,605 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:49,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1560746476, now seen corresponding path program 73 times [2018-10-01 00:47:49,605 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:49,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:49,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:49,606 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:49,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:49,613 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:47:49,613 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:47:49,613 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:47:49,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:47:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:49,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:53,441 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 00:47:53,460 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:47:53,460 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-10-01 00:47:53,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-01 00:47:53,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-01 00:47:53,461 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:53,461 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-10-01 00:48:17,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:17,005 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-10-01 00:48:17,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-01 00:48:17,006 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-10-01 00:48:17,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:17,006 INFO L225 Difference]: With dead ends: 80 [2018-10-01 00:48:17,006 INFO L226 Difference]: Without dead ends: 78 [2018-10-01 00:48:17,006 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time [2018-10-01 00:48:17,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-01 00:48:17,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-01 00:48:17,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-01 00:48:17,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-01 00:48:17,011 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-10-01 00:48:17,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:17,012 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-01 00:48:17,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-01 00:48:17,012 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-01 00:48:17,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-01 00:48:17,012 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:17,012 INFO L375 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-10-01 00:48:17,013 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:17,013 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:17,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1138502307, now seen corresponding path program 74 times [2018-10-01 00:48:17,013 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:17,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:17,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:17,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:48:17,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:17,020 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-01 00:48:17,021 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-10-01 00:48:17,021 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-01 00:48:17,032 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:48:17,296 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:48:17,296 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:17,301 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:20,894 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 00:48:20,915 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-01 00:48:20,915 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-10-01 00:48:20,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-01 00:48:20,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-01 00:48:20,916 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:20,916 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. Received shutdown request... [2018-10-01 00:48:45,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-01 00:48:45,120 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-01 00:48:45,125 WARN L206 ceAbstractionStarter]: Timeout [2018-10-01 00:48:45,126 INFO L202 PluginConnector]: Adding new model gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.10 12:48:45 BoogieIcfgContainer [2018-10-01 00:48:45,126 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-01 00:48:45,127 INFO L168 Benchmark]: Toolchain (without parser) took 797211.77 ms. Allocated memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: -512.8 MB). Free memory was 1.5 GB in the beginning and 952.4 MB in the end (delta: 504.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-01 00:48:45,129 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.99 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 00:48:45,129 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.40 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 00:48:45,130 INFO L168 Benchmark]: Boogie Preprocessor took 21.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-01 00:48:45,130 INFO L168 Benchmark]: RCFGBuilder took 310.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-01 00:48:45,132 INFO L168 Benchmark]: TraceAbstraction took 796832.96 ms. Allocated memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: -512.8 MB). Free memory was 1.4 GB in the beginning and 952.4 MB in the end (delta: 483.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-01 00:48:45,138 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 0.99 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 39.40 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 21.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 310.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 796832.96 ms. Allocated memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: -512.8 MB). Free memory was 1.4 GB in the beginning and 952.4 MB in the end (delta: 483.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 46). Cancelled while BasicCegarLoop was constructing difference of abstraction (78states) and FLOYD_HOARE automaton (currently 77 states, 77 states before enhancement), while ReachableStatesComputation was computing reachable states (79 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 796.7s OverallTime, 75 OverallIterations, 74 TraceHistogramMax, 619.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 224 SDtfs, 0 SDslu, 2775 SDs, 0 SdLazy, 149150 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 255.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2925 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 2850 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 103.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 74 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 66.5s SatisfiabilityAnalysisTime, 105.7s InterpolantComputationTime, 3000 NumberOfCodeBlocks, 3000 NumberOfCodeBlocksAsserted, 790 NumberOfCheckSat, 2925 ConstructedInterpolants, 0 QuantifiedInterpolants, 1036785 SizeOfPredicates, 224 NumberOfNonLiveVariables, 15300 ConjunctsInSsa, 11547 ConjunctsInUnsatCore, 75 InterpolantComputations, 1 PerfectInterpolantSequences, 0/70300 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/gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-01_00-48-45-157.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-01_00-48-45-157.csv Completed graceful shutdown