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/overflow1.i_3.bplTransformedIcfg_BEv2_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-10-01 00:38:33,543 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-01 00:38:33,546 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-01 00:38:33,564 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-01 00:38:33,564 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-01 00:38:33,566 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-01 00:38:33,567 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-01 00:38:33,570 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-01 00:38:33,572 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-01 00:38:33,573 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-01 00:38:33,583 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-01 00:38:33,628 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 00:38:33,657 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-01 00:38:33,657 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-01 00:38:33,658 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-01 00:38:33,658 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-01 00:38:33,659 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-01 00:38:33,659 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-01 00:38:33,659 INFO L133 SettingsManager]: * Use SBE=true [2018-10-01 00:38:33,661 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-01 00:38:33,661 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-01 00:38:33,661 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-01 00:38:33,661 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-01 00:38:33,661 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-01 00:38:33,662 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-01 00:38:33,662 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-01 00:38:33,662 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-01 00:38:33,662 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-01 00:38:33,662 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-01 00:38:33,663 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-01 00:38:33,663 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-01 00:38:33,663 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-01 00:38:33,663 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-01 00:38:33,663 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-01 00:38:33,664 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-01 00:38:33,664 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-01 00:38:33,664 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-01 00:38:33,664 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-01 00:38:33,666 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-01 00:38:33,666 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-01 00:38:33,666 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-01 00:38:33,666 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-01 00:38:33,666 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-01 00:38:33,738 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-01 00:38:33,755 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-01 00:38:33,759 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-01 00:38:33,761 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-01 00:38:33,761 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-01 00:38:33,762 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/overflow1.i_3.bplTransformedIcfg_BEv2_4.bpl [2018-10-01 00:38:33,762 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/overflow1.i_3.bplTransformedIcfg_BEv2_4.bpl' [2018-10-01 00:38:33,814 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-01 00:38:33,817 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-01 00:38:33,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-01 00:38:33,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-01 00:38:33,819 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-01 00:38:33,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "overflow1.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:38:33" (1/1) ... [2018-10-01 00:38:33,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "overflow1.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:38:33" (1/1) ... [2018-10-01 00:38:33,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-01 00:38:33,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-01 00:38:33,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-01 00:38:33,862 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-01 00:38:33,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "overflow1.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:38:33" (1/1) ... [2018-10-01 00:38:33,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "overflow1.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:38:33" (1/1) ... [2018-10-01 00:38:33,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "overflow1.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:38:33" (1/1) ... [2018-10-01 00:38:33,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "overflow1.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:38:33" (1/1) ... [2018-10-01 00:38:33,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "overflow1.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:38:33" (1/1) ... [2018-10-01 00:38:33,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "overflow1.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:38:33" (1/1) ... [2018-10-01 00:38:33,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "overflow1.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:38:33" (1/1) ... [2018-10-01 00:38:33,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-01 00:38:33,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-01 00:38:33,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-01 00:38:33,883 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-01 00:38:33,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "overflow1.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:38:33" (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 00:38:33,945 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-01 00:38:33,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-01 00:38:33,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-01 00:38:34,076 INFO L348 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-01 00:38:34,076 INFO L202 PluginConnector]: Adding new model overflow1.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 12:38:34 BoogieIcfgContainer [2018-10-01 00:38:34,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-01 00:38:34,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-01 00:38:34,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-01 00:38:34,081 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-01 00:38:34,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "overflow1.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:38:33" (1/2) ... [2018-10-01 00:38:34,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@345ebd7e and model type overflow1.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.10 12:38:34, skipping insertion in model container [2018-10-01 00:38:34,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "overflow1.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 12:38:34" (2/2) ... [2018-10-01 00:38:34,085 INFO L112 eAbstractionObserver]: Analyzing ICFG overflow1.i_3.bplTransformedIcfg_BEv2_4.bpl [2018-10-01 00:38:34,095 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-01 00:38:34,103 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-01 00:38:34,161 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-01 00:38:34,162 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-01 00:38:34,162 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-01 00:38:34,162 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-01 00:38:34,162 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-01 00:38:34,162 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-01 00:38:34,163 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-01 00:38:34,163 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-01 00:38:34,163 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-01 00:38:34,181 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-01 00:38:34,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-01 00:38:34,194 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:34,195 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-01 00:38:34,196 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:34,205 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:34,206 INFO L82 PathProgramCache]: Analyzing trace with hash 30017, now seen corresponding path program 1 times [2018-10-01 00:38:34,210 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:34,211 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:34,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:34,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:34,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:34,465 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 00:38:34,468 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 00:38:34,468 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-01 00:38:34,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-01 00:38:34,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-01 00:38:34,490 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:34,492 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-01 00:38:34,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:34,632 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-10-01 00:38:34,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-01 00:38:34,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-01 00:38:34,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:34,645 INFO L225 Difference]: With dead ends: 9 [2018-10-01 00:38:34,645 INFO L226 Difference]: Without dead ends: 5 [2018-10-01 00:38:34,649 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 00:38:34,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-01 00:38:34,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-01 00:38:34,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-01 00:38:34,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-01 00:38:34,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-01 00:38:34,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:34,685 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-01 00:38:34,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-01 00:38:34,686 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-01 00:38:34,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-01 00:38:34,686 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:34,686 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-01 00:38:34,686 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:34,687 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:34,687 INFO L82 PathProgramCache]: Analyzing trace with hash 928552, now seen corresponding path program 1 times [2018-10-01 00:38:34,687 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:34,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:34,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:34,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:34,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:34,846 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 00:38:34,847 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:34,847 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:34,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:34,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:34,964 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 00:38:34,987 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:34,987 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-01 00:38:34,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-01 00:38:34,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-01 00:38:34,989 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:34,989 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-10-01 00:38:35,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:35,083 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-01 00:38:35,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-01 00:38:35,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-10-01 00:38:35,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:35,084 INFO L225 Difference]: With dead ends: 8 [2018-10-01 00:38:35,085 INFO L226 Difference]: Without dead ends: 6 [2018-10-01 00:38:35,085 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:38:35,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-01 00:38:35,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-01 00:38:35,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-01 00:38:35,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-01 00:38:35,088 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-01 00:38:35,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:35,088 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-01 00:38:35,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-01 00:38:35,089 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-01 00:38:35,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-01 00:38:35,089 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:35,089 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-01 00:38:35,090 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:35,090 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:35,090 INFO L82 PathProgramCache]: Analyzing trace with hash 28783137, now seen corresponding path program 2 times [2018-10-01 00:38:35,090 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:35,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:35,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:35,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:35,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:35,172 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 00:38:35,173 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:35,173 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:35,187 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:38:35,204 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:38:35,205 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:35,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:35,236 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 00:38:35,257 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:35,257 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-01 00:38:35,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-01 00:38:35,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-01 00:38:35,258 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:35,258 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-10-01 00:38:35,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:35,403 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-01 00:38:35,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-01 00:38:35,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-10-01 00:38:35,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:35,404 INFO L225 Difference]: With dead ends: 9 [2018-10-01 00:38:35,405 INFO L226 Difference]: Without dead ends: 7 [2018-10-01 00:38:35,405 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 00:38:35,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-01 00:38:35,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-01 00:38:35,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-01 00:38:35,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-01 00:38:35,408 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-01 00:38:35,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:35,409 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-01 00:38:35,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-01 00:38:35,409 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-01 00:38:35,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-01 00:38:35,409 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:35,410 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-10-01 00:38:35,410 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:35,410 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:35,410 INFO L82 PathProgramCache]: Analyzing trace with hash 892275272, now seen corresponding path program 3 times [2018-10-01 00:38:35,411 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:35,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:35,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:35,412 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:35,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:35,559 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 00:38:35,559 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:35,560 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:35,576 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:38:35,628 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-01 00:38:35,629 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:35,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:35,726 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 00:38:35,756 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:35,756 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-01 00:38:35,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-01 00:38:35,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-01 00:38:35,757 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:35,757 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-10-01 00:38:35,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:35,830 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-01 00:38:35,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-01 00:38:35,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-10-01 00:38:35,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:35,834 INFO L225 Difference]: With dead ends: 10 [2018-10-01 00:38:35,834 INFO L226 Difference]: Without dead ends: 8 [2018-10-01 00:38:35,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:38:35,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-01 00:38:35,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-01 00:38:35,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-01 00:38:35,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-01 00:38:35,838 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-01 00:38:35,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:35,839 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-01 00:38:35,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-01 00:38:35,839 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-01 00:38:35,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-01 00:38:35,840 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:35,840 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-10-01 00:38:35,840 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:35,840 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:35,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1890727681, now seen corresponding path program 4 times [2018-10-01 00:38:35,840 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:35,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:35,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:35,842 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:35,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:35,985 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 00:38:35,985 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:35,985 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-01 00:38:36,000 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:36,016 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:38:36,017 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:36,018 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:36,053 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 00:38:36,074 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:36,074 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-01 00:38:36,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-01 00:38:36,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-01 00:38:36,075 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:36,075 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-10-01 00:38:36,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:36,189 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-01 00:38:36,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-01 00:38:36,190 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-10-01 00:38:36,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:36,190 INFO L225 Difference]: With dead ends: 11 [2018-10-01 00:38:36,190 INFO L226 Difference]: Without dead ends: 9 [2018-10-01 00:38:36,191 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:38:36,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-01 00:38:36,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-01 00:38:36,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-01 00:38:36,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-01 00:38:36,194 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-01 00:38:36,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:36,194 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-01 00:38:36,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-01 00:38:36,195 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-01 00:38:36,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-01 00:38:36,195 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:36,195 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-10-01 00:38:36,196 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:36,196 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:36,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1516986008, now seen corresponding path program 5 times [2018-10-01 00:38:36,196 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:36,196 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:36,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:36,197 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:36,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:36,276 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 00:38:36,276 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:36,276 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:36,284 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:38:36,297 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-01 00:38:36,297 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:36,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:36,333 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 00:38:36,354 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:36,355 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-01 00:38:36,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-01 00:38:36,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-01 00:38:36,355 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:36,356 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-10-01 00:38:36,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:36,714 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-01 00:38:36,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-01 00:38:36,715 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-01 00:38:36,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:36,716 INFO L225 Difference]: With dead ends: 12 [2018-10-01 00:38:36,716 INFO L226 Difference]: Without dead ends: 10 [2018-10-01 00:38:36,718 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 00:38:36,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-01 00:38:36,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-01 00:38:36,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-01 00:38:36,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-01 00:38:36,724 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-01 00:38:36,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:36,728 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-01 00:38:36,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-01 00:38:36,728 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-01 00:38:36,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-01 00:38:36,729 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:36,729 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-10-01 00:38:36,729 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:36,730 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:36,730 INFO L82 PathProgramCache]: Analyzing trace with hash 218072033, now seen corresponding path program 6 times [2018-10-01 00:38:36,730 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:36,730 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:36,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:36,732 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:36,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:37,041 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 00:38:37,042 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:37,042 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:37,052 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:38:37,061 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-01 00:38:37,062 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:37,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:37,124 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 00:38:37,145 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:37,146 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-01 00:38:37,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-01 00:38:37,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-01 00:38:37,147 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:37,147 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-10-01 00:38:37,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:37,280 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-01 00:38:37,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-01 00:38:37,281 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-10-01 00:38:37,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:37,281 INFO L225 Difference]: With dead ends: 13 [2018-10-01 00:38:37,281 INFO L226 Difference]: Without dead ends: 11 [2018-10-01 00:38:37,282 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:38:37,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-01 00:38:37,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-01 00:38:37,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-01 00:38:37,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-01 00:38:37,285 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-01 00:38:37,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:37,285 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-01 00:38:37,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-01 00:38:37,285 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-01 00:38:37,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-01 00:38:37,286 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:37,286 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-10-01 00:38:37,287 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:37,287 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:37,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1829703544, now seen corresponding path program 7 times [2018-10-01 00:38:37,287 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:37,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:37,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:37,288 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:37,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:37,434 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 00:38:37,434 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:37,434 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:37,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:37,452 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:37,539 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 00:38:37,570 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:37,570 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-01 00:38:37,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-01 00:38:37,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-01 00:38:37,571 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:37,571 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-10-01 00:38:37,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:37,693 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-01 00:38:37,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-01 00:38:37,694 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-10-01 00:38:37,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:37,695 INFO L225 Difference]: With dead ends: 14 [2018-10-01 00:38:37,695 INFO L226 Difference]: Without dead ends: 12 [2018-10-01 00:38:37,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:38:37,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-01 00:38:37,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-01 00:38:37,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-01 00:38:37,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-01 00:38:37,698 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-01 00:38:37,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:37,698 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-01 00:38:37,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-01 00:38:37,699 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-01 00:38:37,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-01 00:38:37,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:37,699 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-10-01 00:38:37,700 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:37,700 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:37,700 INFO L82 PathProgramCache]: Analyzing trace with hash -886236991, now seen corresponding path program 8 times [2018-10-01 00:38:37,700 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:37,700 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:37,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:37,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:37,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:37,858 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 00:38:37,858 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:37,859 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:37,872 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:38:37,882 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:38:37,882 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:37,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:37,939 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 00:38:37,960 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:37,960 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-01 00:38:37,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-01 00:38:37,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-01 00:38:37,961 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:37,961 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-10-01 00:38:38,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:38,101 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-01 00:38:38,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-01 00:38:38,105 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-10-01 00:38:38,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:38,105 INFO L225 Difference]: With dead ends: 15 [2018-10-01 00:38:38,106 INFO L226 Difference]: Without dead ends: 13 [2018-10-01 00:38:38,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:38:38,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-01 00:38:38,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-01 00:38:38,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-01 00:38:38,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-01 00:38:38,109 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-01 00:38:38,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:38,109 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-01 00:38:38,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-01 00:38:38,110 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-01 00:38:38,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-01 00:38:38,110 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:38,110 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-10-01 00:38:38,111 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:38,111 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:38,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1703544920, now seen corresponding path program 9 times [2018-10-01 00:38:38,111 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:38,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:38,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:38,112 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:38,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:38,266 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 00:38:38,266 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:38,267 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:38,277 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:38:38,293 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-01 00:38:38,293 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:38,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:38,341 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 00:38:38,362 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:38,362 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-01 00:38:38,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-01 00:38:38,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-01 00:38:38,363 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:38,364 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-10-01 00:38:38,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:38,480 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-01 00:38:38,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-01 00:38:38,481 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-10-01 00:38:38,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:38,482 INFO L225 Difference]: With dead ends: 16 [2018-10-01 00:38:38,482 INFO L226 Difference]: Without dead ends: 14 [2018-10-01 00:38:38,483 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:38:38,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-01 00:38:38,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-01 00:38:38,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-01 00:38:38,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-01 00:38:38,486 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-01 00:38:38,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:38,486 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-01 00:38:38,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-01 00:38:38,487 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-01 00:38:38,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-01 00:38:38,487 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:38,487 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-10-01 00:38:38,487 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:38,488 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:38,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1270286943, now seen corresponding path program 10 times [2018-10-01 00:38:38,488 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:38,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:38,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:38,489 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:38,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:38,601 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 00:38:38,602 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:38,602 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:38,610 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:38:38,620 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:38:38,620 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:38,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:38,672 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 00:38:38,693 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:38,693 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-01 00:38:38,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-01 00:38:38,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-01 00:38:38,694 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:38,694 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-10-01 00:38:38,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:38,785 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-01 00:38:38,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-01 00:38:38,786 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-10-01 00:38:38,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:38,787 INFO L225 Difference]: With dead ends: 17 [2018-10-01 00:38:38,787 INFO L226 Difference]: Without dead ends: 15 [2018-10-01 00:38:38,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:38:38,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-01 00:38:38,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-01 00:38:38,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-01 00:38:38,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-01 00:38:38,791 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-01 00:38:38,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:38,792 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-01 00:38:38,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-01 00:38:38,792 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-01 00:38:38,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-01 00:38:38,792 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:38,793 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-10-01 00:38:38,793 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:38,793 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:38,793 INFO L82 PathProgramCache]: Analyzing trace with hash -724191544, now seen corresponding path program 11 times [2018-10-01 00:38:38,793 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:38,794 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:38,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:38,795 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:38,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:38,951 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 00:38:38,952 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:38,952 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:38,960 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:38:38,979 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-01 00:38:38,980 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:38,981 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:39,050 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 00:38:39,071 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:39,071 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-01 00:38:39,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-01 00:38:39,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-01 00:38:39,072 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:39,072 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-10-01 00:38:39,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:39,174 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-01 00:38:39,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-01 00:38:39,175 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-10-01 00:38:39,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:39,176 INFO L225 Difference]: With dead ends: 18 [2018-10-01 00:38:39,176 INFO L226 Difference]: Without dead ends: 16 [2018-10-01 00:38:39,177 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:38:39,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-01 00:38:39,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-01 00:38:39,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-01 00:38:39,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-01 00:38:39,181 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-01 00:38:39,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:39,182 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-01 00:38:39,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-01 00:38:39,182 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-01 00:38:39,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-01 00:38:39,183 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:39,183 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-10-01 00:38:39,183 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:39,183 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:39,183 INFO L82 PathProgramCache]: Analyzing trace with hash -975103359, now seen corresponding path program 12 times [2018-10-01 00:38:39,183 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:39,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:39,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:39,184 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:39,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:39,419 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 00:38:39,420 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:39,420 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:39,428 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:38:39,441 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-01 00:38:39,441 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:39,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:39,488 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 00:38:39,513 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:39,513 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-01 00:38:39,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-01 00:38:39,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-01 00:38:39,514 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:39,514 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-10-01 00:38:39,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:39,627 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-01 00:38:39,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-01 00:38:39,627 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-10-01 00:38:39,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:39,628 INFO L225 Difference]: With dead ends: 19 [2018-10-01 00:38:39,629 INFO L226 Difference]: Without dead ends: 17 [2018-10-01 00:38:39,629 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:38:39,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-01 00:38:39,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-01 00:38:39,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-01 00:38:39,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-01 00:38:39,633 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-01 00:38:39,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:39,633 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-01 00:38:39,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-01 00:38:39,633 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-01 00:38:39,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-01 00:38:39,634 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:39,634 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-10-01 00:38:39,634 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:39,634 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:39,634 INFO L82 PathProgramCache]: Analyzing trace with hash -163435032, now seen corresponding path program 13 times [2018-10-01 00:38:39,635 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:39,635 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:39,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:39,635 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:39,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:39,792 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 00:38:39,793 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:39,793 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:39,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:39,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:39,914 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 00:38:39,936 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:39,937 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-01 00:38:39,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-01 00:38:39,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-01 00:38:39,937 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:39,938 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-10-01 00:38:40,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:40,204 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-01 00:38:40,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-01 00:38:40,205 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-10-01 00:38:40,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:40,205 INFO L225 Difference]: With dead ends: 20 [2018-10-01 00:38:40,206 INFO L226 Difference]: Without dead ends: 18 [2018-10-01 00:38:40,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:38:40,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-01 00:38:40,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-01 00:38:40,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-01 00:38:40,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-01 00:38:40,210 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-01 00:38:40,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:40,211 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-01 00:38:40,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-01 00:38:40,211 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-01 00:38:40,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-01 00:38:40,212 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:40,212 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-10-01 00:38:40,212 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:40,212 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:40,212 INFO L82 PathProgramCache]: Analyzing trace with hash -771520671, now seen corresponding path program 14 times [2018-10-01 00:38:40,212 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:40,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:40,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:40,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:40,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:40,392 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 00:38:40,392 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:40,393 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:40,425 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:38:40,443 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:38:40,443 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:40,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:40,508 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 00:38:40,528 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:40,529 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-01 00:38:40,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-01 00:38:40,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-01 00:38:40,530 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:40,530 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-10-01 00:38:40,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:40,668 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-01 00:38:40,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-01 00:38:40,669 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-10-01 00:38:40,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:40,669 INFO L225 Difference]: With dead ends: 21 [2018-10-01 00:38:40,670 INFO L226 Difference]: Without dead ends: 19 [2018-10-01 00:38:40,670 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:38:40,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-01 00:38:40,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-01 00:38:40,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-01 00:38:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-01 00:38:40,674 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-01 00:38:40,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:40,674 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-01 00:38:40,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-01 00:38:40,674 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-01 00:38:40,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-01 00:38:40,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:40,675 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-10-01 00:38:40,675 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:40,675 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:40,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1852661000, now seen corresponding path program 15 times [2018-10-01 00:38:40,676 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:40,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:40,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:40,677 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:40,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:41,082 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 00:38:41,083 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:41,083 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:41,091 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:38:41,159 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-01 00:38:41,160 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:41,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:41,266 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 00:38:41,287 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:41,287 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-01 00:38:41,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-01 00:38:41,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-01 00:38:41,288 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:41,288 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-10-01 00:38:41,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:41,431 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-01 00:38:41,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-01 00:38:41,432 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-10-01 00:38:41,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:41,433 INFO L225 Difference]: With dead ends: 22 [2018-10-01 00:38:41,433 INFO L226 Difference]: Without dead ends: 20 [2018-10-01 00:38:41,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:38:41,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-01 00:38:41,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-01 00:38:41,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-01 00:38:41,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-01 00:38:41,438 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-01 00:38:41,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:41,438 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-01 00:38:41,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-01 00:38:41,438 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-01 00:38:41,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-01 00:38:41,439 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:41,439 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-10-01 00:38:41,439 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:41,439 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:41,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1597914177, now seen corresponding path program 16 times [2018-10-01 00:38:41,440 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:41,440 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:41,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:41,441 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:41,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:41,566 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 00:38:41,567 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:41,567 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:41,575 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:38:41,595 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:38:41,596 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:41,597 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:41,888 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 00:38:41,909 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:41,910 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-01 00:38:41,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-01 00:38:41,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-01 00:38:41,910 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:41,910 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-10-01 00:38:42,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:42,094 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-01 00:38:42,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-01 00:38:42,095 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-10-01 00:38:42,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:42,096 INFO L225 Difference]: With dead ends: 23 [2018-10-01 00:38:42,096 INFO L226 Difference]: Without dead ends: 21 [2018-10-01 00:38:42,097 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:38:42,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-01 00:38:42,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-01 00:38:42,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-01 00:38:42,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-01 00:38:42,100 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-10-01 00:38:42,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:42,100 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-01 00:38:42,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-01 00:38:42,100 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-01 00:38:42,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-01 00:38:42,101 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:42,101 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-10-01 00:38:42,101 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:42,102 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:42,102 INFO L82 PathProgramCache]: Analyzing trace with hash -2004270040, now seen corresponding path program 17 times [2018-10-01 00:38:42,102 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:42,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:42,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:42,103 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:42,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:42,535 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 00:38:42,535 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:42,535 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:42,544 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:38:42,569 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-01 00:38:42,570 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:42,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:42,668 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 00:38:42,690 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:42,690 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-01 00:38:42,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-01 00:38:42,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-01 00:38:42,690 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:42,691 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-10-01 00:38:42,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:42,837 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-01 00:38:42,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-01 00:38:42,837 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-10-01 00:38:42,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:42,838 INFO L225 Difference]: With dead ends: 24 [2018-10-01 00:38:42,838 INFO L226 Difference]: Without dead ends: 22 [2018-10-01 00:38:42,839 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:38:42,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-01 00:38:42,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-01 00:38:42,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-01 00:38:42,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-01 00:38:42,844 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-10-01 00:38:42,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:42,844 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-01 00:38:42,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-01 00:38:42,844 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-01 00:38:42,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-01 00:38:42,845 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:42,845 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-10-01 00:38:42,845 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:42,846 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:42,846 INFO L82 PathProgramCache]: Analyzing trace with hash -2002831071, now seen corresponding path program 18 times [2018-10-01 00:38:42,846 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:42,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:42,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:42,847 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:42,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:42,981 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 00:38:42,981 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:42,982 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:42,993 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:38:43,028 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-01 00:38:43,028 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:43,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:43,091 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 00:38:43,121 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:43,121 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-01 00:38:43,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-01 00:38:43,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-01 00:38:43,122 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:43,122 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-10-01 00:38:43,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:43,272 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-01 00:38:43,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-01 00:38:43,272 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-10-01 00:38:43,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:43,273 INFO L225 Difference]: With dead ends: 25 [2018-10-01 00:38:43,273 INFO L226 Difference]: Without dead ends: 23 [2018-10-01 00:38:43,274 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:38:43,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-01 00:38:43,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-01 00:38:43,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-01 00:38:43,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-01 00:38:43,279 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-10-01 00:38:43,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:43,279 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-01 00:38:43,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-01 00:38:43,279 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-01 00:38:43,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-01 00:38:43,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:43,280 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-10-01 00:38:43,280 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:43,280 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:43,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1958223032, now seen corresponding path program 19 times [2018-10-01 00:38:43,281 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:43,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:43,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:43,282 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:43,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:43,700 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 00:38:43,701 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:43,701 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:43,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:43,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:43,829 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 00:38:43,849 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:43,849 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-01 00:38:43,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-01 00:38:43,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-01 00:38:43,850 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:43,850 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-10-01 00:38:44,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:44,070 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-01 00:38:44,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-01 00:38:44,071 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-10-01 00:38:44,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:44,072 INFO L225 Difference]: With dead ends: 26 [2018-10-01 00:38:44,072 INFO L226 Difference]: Without dead ends: 24 [2018-10-01 00:38:44,073 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:38:44,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-01 00:38:44,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-01 00:38:44,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-01 00:38:44,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-01 00:38:44,075 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-10-01 00:38:44,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:44,075 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-01 00:38:44,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-01 00:38:44,076 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-01 00:38:44,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-01 00:38:44,076 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:44,076 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-10-01 00:38:44,077 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:44,077 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:44,077 INFO L82 PathProgramCache]: Analyzing trace with hash -575373823, now seen corresponding path program 20 times [2018-10-01 00:38:44,077 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:44,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:44,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:44,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:44,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:44,361 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 00:38:44,361 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:44,361 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:44,371 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:38:44,386 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:38:44,386 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:44,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:44,501 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 00:38:44,534 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:44,534 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-01 00:38:44,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-01 00:38:44,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-01 00:38:44,535 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:44,535 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-10-01 00:38:44,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:44,675 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-01 00:38:44,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-01 00:38:44,676 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-10-01 00:38:44,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:44,677 INFO L225 Difference]: With dead ends: 27 [2018-10-01 00:38:44,677 INFO L226 Difference]: Without dead ends: 25 [2018-10-01 00:38:44,677 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:38:44,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-01 00:38:44,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-01 00:38:44,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-01 00:38:44,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-01 00:38:44,681 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-10-01 00:38:44,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:44,682 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-01 00:38:44,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-01 00:38:44,682 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-01 00:38:44,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-01 00:38:44,683 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:44,683 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-10-01 00:38:44,683 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:44,683 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:44,683 INFO L82 PathProgramCache]: Analyzing trace with hash -656721304, now seen corresponding path program 21 times [2018-10-01 00:38:44,683 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:44,684 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:44,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:44,684 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:44,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:44,853 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 00:38:44,853 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:44,853 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:44,861 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:38:44,879 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-01 00:38:44,880 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:44,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:45,124 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 00:38:45,158 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:45,158 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-01 00:38:45,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-01 00:38:45,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-01 00:38:45,159 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:45,159 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-10-01 00:38:45,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:45,428 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-01 00:38:45,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-01 00:38:45,430 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-10-01 00:38:45,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:45,431 INFO L225 Difference]: With dead ends: 28 [2018-10-01 00:38:45,431 INFO L226 Difference]: Without dead ends: 26 [2018-10-01 00:38:45,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:38:45,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-01 00:38:45,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-01 00:38:45,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-01 00:38:45,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-01 00:38:45,434 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-10-01 00:38:45,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:45,434 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-01 00:38:45,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-01 00:38:45,434 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-01 00:38:45,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-01 00:38:45,435 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:45,435 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-10-01 00:38:45,435 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:45,435 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:45,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1116474081, now seen corresponding path program 22 times [2018-10-01 00:38:45,436 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:45,436 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:45,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:45,436 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:45,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:45,616 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 00:38:45,616 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:45,616 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:45,625 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:38:45,645 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:38:45,645 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:45,647 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:45,781 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 00:38:45,814 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:45,814 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-01 00:38:45,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-01 00:38:45,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-01 00:38:45,815 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:45,815 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-10-01 00:38:45,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:45,966 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-01 00:38:45,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-01 00:38:45,966 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-10-01 00:38:45,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:45,967 INFO L225 Difference]: With dead ends: 29 [2018-10-01 00:38:45,967 INFO L226 Difference]: Without dead ends: 27 [2018-10-01 00:38:45,967 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:38:45,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-01 00:38:45,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-01 00:38:45,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-01 00:38:45,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-01 00:38:45,971 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-10-01 00:38:45,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:45,971 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-01 00:38:45,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-01 00:38:45,971 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-01 00:38:45,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-01 00:38:45,972 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:45,972 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-10-01 00:38:45,972 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:45,972 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:45,972 INFO L82 PathProgramCache]: Analyzing trace with hash 250956168, now seen corresponding path program 23 times [2018-10-01 00:38:45,973 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:45,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:45,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:45,973 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:45,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:46,126 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 00:38:46,127 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:46,127 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:46,135 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:38:46,154 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-01 00:38:46,155 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:46,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:46,255 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 00:38:46,276 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:46,276 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-01 00:38:46,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-01 00:38:46,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-01 00:38:46,277 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:46,277 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-10-01 00:38:46,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:46,438 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-01 00:38:46,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-01 00:38:46,444 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-10-01 00:38:46,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:46,444 INFO L225 Difference]: With dead ends: 30 [2018-10-01 00:38:46,444 INFO L226 Difference]: Without dead ends: 28 [2018-10-01 00:38:46,445 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:38:46,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-01 00:38:46,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-01 00:38:46,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-01 00:38:46,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-01 00:38:46,449 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-10-01 00:38:46,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:46,449 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-01 00:38:46,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-01 00:38:46,449 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-01 00:38:46,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-01 00:38:46,450 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:46,450 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-10-01 00:38:46,450 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:46,451 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:46,451 INFO L82 PathProgramCache]: Analyzing trace with hash -810295359, now seen corresponding path program 24 times [2018-10-01 00:38:46,451 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:46,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:46,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:46,452 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:46,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:46,613 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 00:38:46,613 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:46,614 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:46,622 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:38:46,645 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-01 00:38:46,646 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:46,647 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:46,793 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 00:38:46,814 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:46,815 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-01 00:38:46,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-01 00:38:46,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-01 00:38:46,815 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:46,815 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-10-01 00:38:46,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:46,984 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-01 00:38:46,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-01 00:38:46,984 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-10-01 00:38:46,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:46,985 INFO L225 Difference]: With dead ends: 31 [2018-10-01 00:38:46,985 INFO L226 Difference]: Without dead ends: 29 [2018-10-01 00:38:46,986 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:38:46,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-01 00:38:46,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-01 00:38:46,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-01 00:38:46,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-01 00:38:46,990 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-10-01 00:38:46,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:46,990 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-01 00:38:46,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-01 00:38:46,990 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-01 00:38:46,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-01 00:38:46,991 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:46,991 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-10-01 00:38:46,992 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:46,992 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:46,992 INFO L82 PathProgramCache]: Analyzing trace with hash 650645672, now seen corresponding path program 25 times [2018-10-01 00:38:46,992 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:46,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:46,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:46,993 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:46,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:48,080 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 00:38:48,080 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:48,080 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:48,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:48,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:48,196 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 00:38:48,215 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:48,216 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-01 00:38:48,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-01 00:38:48,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-01 00:38:48,216 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:48,217 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-10-01 00:38:48,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:48,390 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-01 00:38:48,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-01 00:38:48,390 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-10-01 00:38:48,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:48,391 INFO L225 Difference]: With dead ends: 32 [2018-10-01 00:38:48,391 INFO L226 Difference]: Without dead ends: 30 [2018-10-01 00:38:48,392 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:38:48,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-01 00:38:48,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-01 00:38:48,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-01 00:38:48,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-01 00:38:48,395 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-01 00:38:48,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:48,395 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-01 00:38:48,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-01 00:38:48,396 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-01 00:38:48,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-01 00:38:48,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:48,396 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-10-01 00:38:48,397 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:48,397 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:48,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1304822623, now seen corresponding path program 26 times [2018-10-01 00:38:48,397 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:48,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:48,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:48,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:48,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:48,554 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 00:38:48,554 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:48,554 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:48,562 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:38:48,579 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:38:48,579 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:48,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:48,658 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 00:38:48,680 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:48,681 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-01 00:38:48,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-01 00:38:48,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-01 00:38:48,681 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:48,682 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-10-01 00:38:48,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:48,902 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-01 00:38:48,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-01 00:38:48,903 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-10-01 00:38:48,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:48,903 INFO L225 Difference]: With dead ends: 33 [2018-10-01 00:38:48,903 INFO L226 Difference]: Without dead ends: 31 [2018-10-01 00:38:48,904 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:38:48,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-01 00:38:48,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-01 00:38:48,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-01 00:38:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-01 00:38:48,907 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-10-01 00:38:48,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:48,907 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-01 00:38:48,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-01 00:38:48,908 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-01 00:38:48,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-01 00:38:48,908 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:48,908 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-10-01 00:38:48,908 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:48,909 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:48,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1794797624, now seen corresponding path program 27 times [2018-10-01 00:38:48,909 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:48,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:48,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:48,910 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:48,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:49,144 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 00:38:49,145 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:49,145 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:49,153 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:38:49,175 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-01 00:38:49,175 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:49,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:49,269 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 00:38:49,290 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:49,290 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-01 00:38:49,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-01 00:38:49,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-01 00:38:49,291 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:49,291 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-10-01 00:38:49,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:49,466 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-01 00:38:49,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-01 00:38:49,467 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-10-01 00:38:49,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:49,468 INFO L225 Difference]: With dead ends: 34 [2018-10-01 00:38:49,468 INFO L226 Difference]: Without dead ends: 32 [2018-10-01 00:38:49,468 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:38:49,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-01 00:38:49,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-01 00:38:49,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-01 00:38:49,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-01 00:38:49,473 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-10-01 00:38:49,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:49,473 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-01 00:38:49,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-01 00:38:49,473 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-01 00:38:49,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-01 00:38:49,474 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:49,474 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-10-01 00:38:49,474 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:49,474 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:49,474 INFO L82 PathProgramCache]: Analyzing trace with hash 195846529, now seen corresponding path program 28 times [2018-10-01 00:38:49,474 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:49,475 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:49,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:49,475 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:49,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:50,447 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 00:38:50,447 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:50,447 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:50,457 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:38:50,473 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:38:50,474 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:50,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:50,528 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 00:38:50,550 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:50,550 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-01 00:38:50,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-01 00:38:50,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-01 00:38:50,551 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:50,551 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-10-01 00:38:50,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:50,700 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-01 00:38:50,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-01 00:38:50,700 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-10-01 00:38:50,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:50,701 INFO L225 Difference]: With dead ends: 35 [2018-10-01 00:38:50,701 INFO L226 Difference]: Without dead ends: 33 [2018-10-01 00:38:50,701 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:38:50,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-01 00:38:50,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-01 00:38:50,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-01 00:38:50,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-01 00:38:50,705 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-10-01 00:38:50,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:50,705 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-01 00:38:50,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-01 00:38:50,706 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-01 00:38:50,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-01 00:38:50,706 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:50,706 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-10-01 00:38:50,707 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:50,707 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:50,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1776273128, now seen corresponding path program 29 times [2018-10-01 00:38:50,707 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:50,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:50,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:50,708 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:50,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:51,208 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 00:38:51,209 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:51,209 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:51,216 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:38:51,288 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-01 00:38:51,289 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:51,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:51,379 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 00:38:51,401 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:51,402 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-01 00:38:51,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-01 00:38:51,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-01 00:38:51,402 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:51,403 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-10-01 00:38:51,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:51,547 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-01 00:38:51,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-01 00:38:51,548 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-10-01 00:38:51,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:51,549 INFO L225 Difference]: With dead ends: 36 [2018-10-01 00:38:51,549 INFO L226 Difference]: Without dead ends: 34 [2018-10-01 00:38:51,549 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:38:51,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-01 00:38:51,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-01 00:38:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-01 00:38:51,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-01 00:38:51,553 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-10-01 00:38:51,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:51,554 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-01 00:38:51,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-01 00:38:51,554 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-01 00:38:51,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-01 00:38:51,554 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:51,555 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-10-01 00:38:51,555 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:51,555 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:51,555 INFO L82 PathProgramCache]: Analyzing trace with hash -770109855, now seen corresponding path program 30 times [2018-10-01 00:38:51,555 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:51,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:51,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:51,556 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:51,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:52,691 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 00:38:52,692 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:52,692 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:52,700 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:38:52,738 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-01 00:38:52,739 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:52,741 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:52,909 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 00:38:52,930 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:52,930 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-01 00:38:52,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-01 00:38:52,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-01 00:38:52,930 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:52,930 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-10-01 00:38:53,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:53,177 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-01 00:38:53,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-01 00:38:53,177 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-10-01 00:38:53,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:53,178 INFO L225 Difference]: With dead ends: 37 [2018-10-01 00:38:53,178 INFO L226 Difference]: Without dead ends: 35 [2018-10-01 00:38:53,179 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:38:53,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-01 00:38:53,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-01 00:38:53,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-01 00:38:53,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-01 00:38:53,181 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-10-01 00:38:53,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:53,182 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-01 00:38:53,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-01 00:38:53,182 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-01 00:38:53,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-01 00:38:53,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:53,182 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-10-01 00:38:53,183 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:53,183 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:53,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1896396296, now seen corresponding path program 31 times [2018-10-01 00:38:53,183 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:53,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:53,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:53,184 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:53,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:53,422 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 00:38:53,422 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:53,423 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:53,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:53,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:53,510 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 00:38:53,530 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:53,530 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-01 00:38:53,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-01 00:38:53,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-01 00:38:53,531 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:53,531 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-10-01 00:38:53,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:53,729 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-01 00:38:53,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-01 00:38:53,730 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-10-01 00:38:53,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:53,730 INFO L225 Difference]: With dead ends: 38 [2018-10-01 00:38:53,730 INFO L226 Difference]: Without dead ends: 36 [2018-10-01 00:38:53,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:38:53,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-01 00:38:53,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-01 00:38:53,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-01 00:38:53,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-01 00:38:53,735 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-10-01 00:38:53,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:53,735 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-01 00:38:53,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-01 00:38:53,736 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-01 00:38:53,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-01 00:38:53,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:53,736 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-10-01 00:38:53,736 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:53,737 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:53,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1341258943, now seen corresponding path program 32 times [2018-10-01 00:38:53,737 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:53,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:53,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:53,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:53,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:53,989 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 00:38:53,989 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:53,989 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:53,996 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:38:54,022 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:38:54,023 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:54,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:54,115 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 00:38:54,137 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:54,138 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-01 00:38:54,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-01 00:38:54,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-01 00:38:54,138 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:54,138 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-10-01 00:38:54,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:54,365 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-01 00:38:54,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-01 00:38:54,365 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-10-01 00:38:54,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:54,366 INFO L225 Difference]: With dead ends: 39 [2018-10-01 00:38:54,366 INFO L226 Difference]: Without dead ends: 37 [2018-10-01 00:38:54,367 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:38:54,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-01 00:38:54,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-01 00:38:54,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-01 00:38:54,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-01 00:38:54,370 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-10-01 00:38:54,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:54,371 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-01 00:38:54,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-01 00:38:54,371 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-01 00:38:54,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-01 00:38:54,371 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:54,372 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-10-01 00:38:54,372 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:54,372 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:54,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1370643752, now seen corresponding path program 33 times [2018-10-01 00:38:54,372 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:54,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:54,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:54,373 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:54,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:54,787 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 00:38:54,787 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:54,787 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:54,795 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:38:54,826 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-01 00:38:54,826 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:54,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:54,947 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 00:38:54,967 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:54,968 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-01 00:38:54,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-01 00:38:54,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-01 00:38:54,968 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:54,968 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-10-01 00:38:55,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:55,099 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-01 00:38:55,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-01 00:38:55,099 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-10-01 00:38:55,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:55,100 INFO L225 Difference]: With dead ends: 40 [2018-10-01 00:38:55,100 INFO L226 Difference]: Without dead ends: 38 [2018-10-01 00:38:55,100 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:38:55,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-01 00:38:55,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-01 00:38:55,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-01 00:38:55,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-01 00:38:55,103 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-10-01 00:38:55,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:55,104 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-01 00:38:55,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-01 00:38:55,104 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-01 00:38:55,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-01 00:38:55,104 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:55,104 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-10-01 00:38:55,104 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:55,105 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:55,105 INFO L82 PathProgramCache]: Analyzing trace with hash -459718623, now seen corresponding path program 34 times [2018-10-01 00:38:55,105 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:55,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:55,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:55,105 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:55,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:55,333 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 00:38:55,333 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:55,333 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:55,343 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:38:55,364 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:38:55,364 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:55,366 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:55,536 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 00:38:55,556 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:55,556 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-01 00:38:55,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-01 00:38:55,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-01 00:38:55,557 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:55,557 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-10-01 00:38:55,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:55,786 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-01 00:38:55,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-01 00:38:55,786 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-10-01 00:38:55,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:55,787 INFO L225 Difference]: With dead ends: 41 [2018-10-01 00:38:55,787 INFO L226 Difference]: Without dead ends: 39 [2018-10-01 00:38:55,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:38:55,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-01 00:38:55,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-01 00:38:55,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-01 00:38:55,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-01 00:38:55,791 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-10-01 00:38:55,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:55,791 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-01 00:38:55,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-01 00:38:55,791 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-01 00:38:55,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-01 00:38:55,792 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:55,792 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-10-01 00:38:55,792 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:55,792 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:55,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1366377400, now seen corresponding path program 35 times [2018-10-01 00:38:55,793 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:55,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:55,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:55,794 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:55,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:56,007 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 00:38:56,007 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:56,008 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:56,015 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:38:56,045 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-01 00:38:56,045 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:56,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:56,138 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 00:38:56,159 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:56,159 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-01 00:38:56,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-01 00:38:56,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-01 00:38:56,160 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:56,160 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-10-01 00:38:56,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:56,426 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-01 00:38:56,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-01 00:38:56,427 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-10-01 00:38:56,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:56,427 INFO L225 Difference]: With dead ends: 42 [2018-10-01 00:38:56,428 INFO L226 Difference]: Without dead ends: 40 [2018-10-01 00:38:56,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:38:56,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-01 00:38:56,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-01 00:38:56,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-01 00:38:56,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-01 00:38:56,431 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-10-01 00:38:56,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:56,431 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-01 00:38:56,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-01 00:38:56,431 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-01 00:38:56,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-01 00:38:56,431 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:56,432 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-10-01 00:38:56,432 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:56,432 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:56,432 INFO L82 PathProgramCache]: Analyzing trace with hash 591971585, now seen corresponding path program 36 times [2018-10-01 00:38:56,432 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:56,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:56,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:56,433 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:56,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:56,794 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 00:38:56,794 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:56,794 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:56,802 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:38:56,829 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-01 00:38:56,829 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:56,831 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:57,840 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 00:38:57,879 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:57,879 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-01 00:38:57,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-01 00:38:57,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-01 00:38:57,880 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:57,880 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-10-01 00:38:58,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:58,544 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-01 00:38:58,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-01 00:38:58,545 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-10-01 00:38:58,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:58,546 INFO L225 Difference]: With dead ends: 43 [2018-10-01 00:38:58,546 INFO L226 Difference]: Without dead ends: 41 [2018-10-01 00:38:58,546 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:38:58,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-01 00:38:58,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-01 00:38:58,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-01 00:38:58,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-01 00:38:58,548 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-10-01 00:38:58,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:58,548 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-01 00:38:58,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-01 00:38:58,549 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-01 00:38:58,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-01 00:38:58,549 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:58,549 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-10-01 00:38:58,549 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:58,550 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:58,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1171247976, now seen corresponding path program 37 times [2018-10-01 00:38:58,550 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:58,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:58,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:58,551 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:58,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:58,812 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 00:38:58,812 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:58,812 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:58,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:58,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:58,931 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 00:38:58,951 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:58,952 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-01 00:38:58,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-01 00:38:58,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-01 00:38:58,952 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:58,953 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-10-01 00:38:59,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:59,231 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-01 00:38:59,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-01 00:38:59,231 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-10-01 00:38:59,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:59,232 INFO L225 Difference]: With dead ends: 44 [2018-10-01 00:38:59,232 INFO L226 Difference]: Without dead ends: 42 [2018-10-01 00:38:59,233 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:38:59,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-01 00:38:59,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-01 00:38:59,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-01 00:38:59,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-01 00:38:59,235 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-10-01 00:38:59,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:59,236 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-01 00:38:59,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-01 00:38:59,236 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-01 00:38:59,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-01 00:38:59,236 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:59,237 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-10-01 00:38:59,237 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:59,237 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:59,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1948946913, now seen corresponding path program 38 times [2018-10-01 00:38:59,237 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:59,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:59,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:59,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:59,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:59,674 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 00:38:59,675 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:59,675 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:59,683 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:38:59,706 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:38:59,706 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:59,708 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:59,792 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 00:38:59,813 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:59,814 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-01 00:38:59,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-01 00:38:59,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-01 00:38:59,814 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:59,814 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-10-01 00:39:00,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:00,057 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-01 00:39:00,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-01 00:39:00,058 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-10-01 00:39:00,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:00,058 INFO L225 Difference]: With dead ends: 45 [2018-10-01 00:39:00,059 INFO L226 Difference]: Without dead ends: 43 [2018-10-01 00:39:00,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:39:00,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-01 00:39:00,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-01 00:39:00,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-01 00:39:00,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-01 00:39:00,062 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-10-01 00:39:00,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:00,062 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-01 00:39:00,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-01 00:39:00,062 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-01 00:39:00,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-01 00:39:00,063 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:00,063 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-10-01 00:39:00,063 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:00,063 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:00,064 INFO L82 PathProgramCache]: Analyzing trace with hash 287810184, now seen corresponding path program 39 times [2018-10-01 00:39:00,064 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:00,064 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:00,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:00,065 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:00,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:00,474 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 00:39:00,474 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:00,474 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:00,481 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:39:00,511 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-01 00:39:00,511 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:00,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:00,587 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 00:39:00,608 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:00,609 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-01 00:39:00,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-01 00:39:00,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-01 00:39:00,609 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:00,609 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-10-01 00:39:00,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:00,818 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-01 00:39:00,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-01 00:39:00,819 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-10-01 00:39:00,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:00,820 INFO L225 Difference]: With dead ends: 46 [2018-10-01 00:39:00,820 INFO L226 Difference]: Without dead ends: 44 [2018-10-01 00:39:00,820 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:39:00,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-01 00:39:00,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-01 00:39:00,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-01 00:39:00,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-01 00:39:00,823 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-10-01 00:39:00,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:00,823 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-01 00:39:00,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-01 00:39:00,823 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-01 00:39:00,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-01 00:39:00,823 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:00,824 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-10-01 00:39:00,824 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:00,824 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:00,824 INFO L82 PathProgramCache]: Analyzing trace with hash 332179137, now seen corresponding path program 40 times [2018-10-01 00:39:00,824 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:00,824 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:00,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:00,825 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:00,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:01,098 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 00:39:01,098 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:01,098 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:01,105 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:39:01,129 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:39:01,129 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:01,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:01,220 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 00:39:01,240 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:01,240 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-01 00:39:01,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-01 00:39:01,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-01 00:39:01,241 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:01,241 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-10-01 00:39:01,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:01,577 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-01 00:39:01,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-01 00:39:01,577 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-10-01 00:39:01,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:01,578 INFO L225 Difference]: With dead ends: 47 [2018-10-01 00:39:01,578 INFO L226 Difference]: Without dead ends: 45 [2018-10-01 00:39:01,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:39:01,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-01 00:39:01,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-01 00:39:01,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-01 00:39:01,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-01 00:39:01,581 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-10-01 00:39:01,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:01,581 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-01 00:39:01,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-01 00:39:01,581 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-01 00:39:01,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-01 00:39:01,582 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:01,582 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-10-01 00:39:01,582 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:01,582 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:01,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1707616680, now seen corresponding path program 41 times [2018-10-01 00:39:01,582 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:01,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:01,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:01,583 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:01,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:02,075 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 00:39:02,075 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:02,075 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:02,084 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:39:02,116 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-01 00:39:02,116 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:02,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:02,227 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 00:39:02,250 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:02,251 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-01 00:39:02,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-01 00:39:02,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-01 00:39:02,251 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:02,251 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-10-01 00:39:02,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:02,807 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-10-01 00:39:02,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-01 00:39:02,807 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-10-01 00:39:02,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:02,808 INFO L225 Difference]: With dead ends: 48 [2018-10-01 00:39:02,808 INFO L226 Difference]: Without dead ends: 46 [2018-10-01 00:39:02,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:39:02,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-01 00:39:02,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-01 00:39:02,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-01 00:39:02,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-01 00:39:02,810 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-10-01 00:39:02,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:02,810 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-01 00:39:02,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-01 00:39:02,811 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-01 00:39:02,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-01 00:39:02,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:02,811 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-10-01 00:39:02,811 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:02,811 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:02,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1396507553, now seen corresponding path program 42 times [2018-10-01 00:39:02,812 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:02,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:02,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:02,812 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:02,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:03,118 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 00:39:03,118 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:03,118 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:03,126 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:39:03,162 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-01 00:39:03,163 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:03,164 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:03,271 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 00:39:03,291 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:03,292 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-01 00:39:03,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-01 00:39:03,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-01 00:39:03,293 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:03,293 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-10-01 00:39:03,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:03,620 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-01 00:39:03,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-01 00:39:03,621 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-10-01 00:39:03,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:03,622 INFO L225 Difference]: With dead ends: 49 [2018-10-01 00:39:03,622 INFO L226 Difference]: Without dead ends: 47 [2018-10-01 00:39:03,622 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:39:03,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-01 00:39:03,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-01 00:39:03,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-01 00:39:03,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-01 00:39:03,625 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-10-01 00:39:03,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:03,626 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-01 00:39:03,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-01 00:39:03,626 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-01 00:39:03,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-01 00:39:03,627 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:03,627 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-10-01 00:39:03,627 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:03,627 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:03,627 INFO L82 PathProgramCache]: Analyzing trace with hash 342059208, now seen corresponding path program 43 times [2018-10-01 00:39:03,627 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:03,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:03,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:03,628 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:03,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:04,419 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 00:39:04,420 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:04,420 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:04,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:04,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:04,544 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 00:39:04,565 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:04,566 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-01 00:39:04,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-01 00:39:04,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-01 00:39:04,566 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:04,566 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-10-01 00:39:04,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:04,930 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-01 00:39:04,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-01 00:39:04,930 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-10-01 00:39:04,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:04,931 INFO L225 Difference]: With dead ends: 50 [2018-10-01 00:39:04,931 INFO L226 Difference]: Without dead ends: 48 [2018-10-01 00:39:04,931 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:39:04,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-01 00:39:04,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-01 00:39:04,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-01 00:39:04,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-01 00:39:04,934 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-10-01 00:39:04,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:04,934 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-01 00:39:04,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-01 00:39:04,935 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-01 00:39:04,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-01 00:39:04,935 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:04,935 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-10-01 00:39:04,936 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:04,936 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:04,936 INFO L82 PathProgramCache]: Analyzing trace with hash 2013898881, now seen corresponding path program 44 times [2018-10-01 00:39:04,936 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:04,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:04,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:04,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:04,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:05,193 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 00:39:05,193 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:05,193 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:05,200 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:39:05,224 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:39:05,225 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:05,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:05,302 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 00:39:05,323 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:05,323 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-01 00:39:05,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-01 00:39:05,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-01 00:39:05,324 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:05,324 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-10-01 00:39:05,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:05,613 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-01 00:39:05,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-01 00:39:05,614 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-10-01 00:39:05,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:05,615 INFO L225 Difference]: With dead ends: 51 [2018-10-01 00:39:05,615 INFO L226 Difference]: Without dead ends: 49 [2018-10-01 00:39:05,615 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:39:05,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-01 00:39:05,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-01 00:39:05,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-01 00:39:05,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-01 00:39:05,618 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-10-01 00:39:05,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:05,618 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-01 00:39:05,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-01 00:39:05,619 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-01 00:39:05,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-01 00:39:05,619 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:05,619 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-10-01 00:39:05,620 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:05,620 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:05,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1993646104, now seen corresponding path program 45 times [2018-10-01 00:39:05,620 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:05,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:05,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:05,621 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:05,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:05,939 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 00:39:05,939 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:05,939 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:05,949 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:39:05,985 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-01 00:39:05,986 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:05,987 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:06,096 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 00:39:06,116 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:06,116 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-01 00:39:06,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-01 00:39:06,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-01 00:39:06,116 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:06,117 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-10-01 00:39:06,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:06,542 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-01 00:39:06,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-01 00:39:06,542 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-10-01 00:39:06,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:06,543 INFO L225 Difference]: With dead ends: 52 [2018-10-01 00:39:06,543 INFO L226 Difference]: Without dead ends: 50 [2018-10-01 00:39:06,544 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:39:06,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-01 00:39:06,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-01 00:39:06,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-01 00:39:06,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-01 00:39:06,546 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-10-01 00:39:06,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:06,546 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-01 00:39:06,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-01 00:39:06,547 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-01 00:39:06,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-01 00:39:06,547 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:06,547 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-10-01 00:39:06,548 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:06,548 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:06,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1673489055, now seen corresponding path program 46 times [2018-10-01 00:39:06,548 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:06,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:06,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:06,549 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:06,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:08,092 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 00:39:08,093 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:08,093 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:08,100 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:39:08,126 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:39:08,126 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:08,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:08,273 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 00:39:08,294 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:08,294 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-01 00:39:08,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-01 00:39:08,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-01 00:39:08,295 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:08,295 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-10-01 00:39:08,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:08,599 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-01 00:39:08,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-01 00:39:08,599 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-10-01 00:39:08,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:08,600 INFO L225 Difference]: With dead ends: 53 [2018-10-01 00:39:08,600 INFO L226 Difference]: Without dead ends: 51 [2018-10-01 00:39:08,601 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:39:08,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-01 00:39:08,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-01 00:39:08,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-01 00:39:08,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-01 00:39:08,603 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-10-01 00:39:08,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:08,604 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-01 00:39:08,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-01 00:39:08,604 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-01 00:39:08,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-01 00:39:08,604 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:08,604 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-10-01 00:39:08,605 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:08,605 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:08,605 INFO L82 PathProgramCache]: Analyzing trace with hash -338555128, now seen corresponding path program 47 times [2018-10-01 00:39:08,605 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:08,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:08,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:08,606 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:08,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:08,908 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 00:39:08,908 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:08,908 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:08,917 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:39:08,960 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-01 00:39:08,960 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:08,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:09,073 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 00:39:09,093 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:09,093 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-01 00:39:09,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-01 00:39:09,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-01 00:39:09,094 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:09,094 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-10-01 00:39:09,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:09,394 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-01 00:39:09,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-01 00:39:09,394 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-10-01 00:39:09,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:09,395 INFO L225 Difference]: With dead ends: 54 [2018-10-01 00:39:09,396 INFO L226 Difference]: Without dead ends: 52 [2018-10-01 00:39:09,396 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:39:09,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-01 00:39:09,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-01 00:39:09,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-01 00:39:09,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-01 00:39:09,399 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-10-01 00:39:09,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:09,399 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-01 00:39:09,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-01 00:39:09,399 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-01 00:39:09,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-01 00:39:09,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:09,400 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-10-01 00:39:09,400 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:09,400 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:09,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1905276351, now seen corresponding path program 48 times [2018-10-01 00:39:09,400 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:09,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:09,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:09,401 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:09,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:09,667 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 00:39:09,668 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:09,668 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:09,675 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:39:09,866 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-01 00:39:09,867 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:09,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:09,975 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 00:39:09,996 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:09,996 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-01 00:39:09,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-01 00:39:09,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-01 00:39:09,997 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:09,997 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-10-01 00:39:10,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:10,237 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-01 00:39:10,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-01 00:39:10,238 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-10-01 00:39:10,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:10,238 INFO L225 Difference]: With dead ends: 55 [2018-10-01 00:39:10,238 INFO L226 Difference]: Without dead ends: 53 [2018-10-01 00:39:10,239 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:39:10,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-01 00:39:10,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-01 00:39:10,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-01 00:39:10,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-01 00:39:10,242 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-10-01 00:39:10,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:10,242 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-01 00:39:10,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-01 00:39:10,243 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-01 00:39:10,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-01 00:39:10,243 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:10,243 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-10-01 00:39:10,243 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:10,244 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:10,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1065973288, now seen corresponding path program 49 times [2018-10-01 00:39:10,244 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:10,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:10,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:10,245 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:10,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:10,548 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 00:39:10,548 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:10,548 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:10,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:10,584 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:10,666 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 00:39:10,687 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:10,688 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-01 00:39:10,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-01 00:39:10,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-01 00:39:10,688 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:10,688 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-10-01 00:39:10,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:10,947 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-10-01 00:39:10,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-01 00:39:10,948 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-10-01 00:39:10,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:10,948 INFO L225 Difference]: With dead ends: 56 [2018-10-01 00:39:10,948 INFO L226 Difference]: Without dead ends: 54 [2018-10-01 00:39:10,949 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:39:10,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-01 00:39:10,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-01 00:39:10,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-01 00:39:10,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-01 00:39:10,952 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-10-01 00:39:10,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:10,952 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-01 00:39:10,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-01 00:39:10,953 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-01 00:39:10,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-01 00:39:10,953 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:10,953 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-10-01 00:39:10,953 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:10,953 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:10,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1314568415, now seen corresponding path program 50 times [2018-10-01 00:39:10,954 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:10,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:10,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:10,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:10,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:11,258 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 00:39:11,258 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:11,258 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:11,267 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:39:11,298 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:39:11,298 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:11,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:11,430 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 00:39:11,450 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:11,451 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-01 00:39:11,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-01 00:39:11,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-01 00:39:11,451 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:11,452 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-10-01 00:39:11,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:11,719 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-01 00:39:11,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-01 00:39:11,720 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-10-01 00:39:11,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:11,721 INFO L225 Difference]: With dead ends: 57 [2018-10-01 00:39:11,721 INFO L226 Difference]: Without dead ends: 55 [2018-10-01 00:39:11,721 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:39:11,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-01 00:39:11,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-01 00:39:11,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-01 00:39:11,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-01 00:39:11,723 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-10-01 00:39:11,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:11,724 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-01 00:39:11,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-01 00:39:11,724 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-01 00:39:11,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-01 00:39:11,724 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:11,724 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-10-01 00:39:11,725 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:11,725 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:11,725 INFO L82 PathProgramCache]: Analyzing trace with hash -2096917176, now seen corresponding path program 51 times [2018-10-01 00:39:11,725 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:11,725 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:11,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:11,726 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:11,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:12,223 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 00:39:12,223 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:12,224 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:12,231 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:39:12,271 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-01 00:39:12,271 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:12,273 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:12,678 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 00:39:12,698 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:12,698 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-01 00:39:12,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-01 00:39:12,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-01 00:39:12,699 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:12,699 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-10-01 00:39:13,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:13,168 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-01 00:39:13,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-01 00:39:13,168 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-10-01 00:39:13,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:13,169 INFO L225 Difference]: With dead ends: 58 [2018-10-01 00:39:13,169 INFO L226 Difference]: Without dead ends: 56 [2018-10-01 00:39:13,169 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:39:13,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-01 00:39:13,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-01 00:39:13,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-01 00:39:13,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-01 00:39:13,171 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-10-01 00:39:13,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:13,172 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-01 00:39:13,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-01 00:39:13,172 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-01 00:39:13,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-01 00:39:13,172 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:13,172 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-10-01 00:39:13,173 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:13,173 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:13,173 INFO L82 PathProgramCache]: Analyzing trace with hash -579924991, now seen corresponding path program 52 times [2018-10-01 00:39:13,173 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:13,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:13,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:13,174 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:13,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:13,484 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 00:39:13,484 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:13,484 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:13,492 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:39:13,522 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:39:13,523 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:13,525 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:13,619 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 00:39:13,639 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:13,639 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-01 00:39:13,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-01 00:39:13,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-01 00:39:13,640 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:13,640 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-10-01 00:39:13,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:13,982 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-01 00:39:13,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-01 00:39:13,983 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-10-01 00:39:13,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:13,984 INFO L225 Difference]: With dead ends: 59 [2018-10-01 00:39:13,984 INFO L226 Difference]: Without dead ends: 57 [2018-10-01 00:39:13,984 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:39:13,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-01 00:39:13,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-01 00:39:13,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-01 00:39:13,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-01 00:39:13,986 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-10-01 00:39:13,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:13,986 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-01 00:39:13,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-01 00:39:13,987 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-01 00:39:13,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-01 00:39:13,987 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:13,987 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-10-01 00:39:13,987 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:13,987 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:13,988 INFO L82 PathProgramCache]: Analyzing trace with hash -797807512, now seen corresponding path program 53 times [2018-10-01 00:39:13,988 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:13,988 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:13,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:13,988 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:13,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:14,283 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 00:39:14,283 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:14,283 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:14,291 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:39:14,332 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-01 00:39:14,332 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:14,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:14,491 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 00:39:14,510 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:14,511 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-01 00:39:14,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-01 00:39:14,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-01 00:39:14,512 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:14,512 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-10-01 00:39:14,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:14,912 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-10-01 00:39:14,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-01 00:39:14,912 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-10-01 00:39:14,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:14,913 INFO L225 Difference]: With dead ends: 60 [2018-10-01 00:39:14,913 INFO L226 Difference]: Without dead ends: 58 [2018-10-01 00:39:14,914 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:39:14,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-01 00:39:14,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-01 00:39:14,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-01 00:39:14,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-01 00:39:14,915 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-10-01 00:39:14,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:14,916 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-01 00:39:14,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-01 00:39:14,916 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-01 00:39:14,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-01 00:39:14,916 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:14,916 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-10-01 00:39:14,916 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:14,917 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:14,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1037768929, now seen corresponding path program 54 times [2018-10-01 00:39:14,917 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:14,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:14,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:14,917 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:14,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:15,446 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 00:39:15,446 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:15,446 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:15,453 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:39:15,499 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-01 00:39:15,499 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:15,501 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:15,709 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 00:39:15,730 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:15,730 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-01 00:39:15,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-01 00:39:15,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-01 00:39:15,731 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:15,731 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-10-01 00:39:16,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:16,046 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-01 00:39:16,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-01 00:39:16,047 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-10-01 00:39:16,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:16,048 INFO L225 Difference]: With dead ends: 61 [2018-10-01 00:39:16,048 INFO L226 Difference]: Without dead ends: 59 [2018-10-01 00:39:16,048 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:39:16,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-01 00:39:16,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-01 00:39:16,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-01 00:39:16,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-01 00:39:16,051 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-10-01 00:39:16,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:16,051 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-01 00:39:16,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-01 00:39:16,051 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-01 00:39:16,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-01 00:39:16,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:16,052 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-10-01 00:39:16,052 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:16,052 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:16,053 INFO L82 PathProgramCache]: Analyzing trace with hash 2106063752, now seen corresponding path program 55 times [2018-10-01 00:39:16,053 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:16,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:16,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:16,054 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:16,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:16,336 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 00:39:16,336 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:16,336 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:16,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:16,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:16,474 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 00:39:16,495 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:16,495 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-01 00:39:16,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-01 00:39:16,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-01 00:39:16,496 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:16,496 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-10-01 00:39:16,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:16,862 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-01 00:39:16,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-01 00:39:16,862 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-10-01 00:39:16,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:16,863 INFO L225 Difference]: With dead ends: 62 [2018-10-01 00:39:16,863 INFO L226 Difference]: Without dead ends: 60 [2018-10-01 00:39:16,863 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:39:16,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-01 00:39:16,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-01 00:39:16,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-01 00:39:16,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-01 00:39:16,867 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-10-01 00:39:16,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:16,867 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-01 00:39:16,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-01 00:39:16,867 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-01 00:39:16,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-01 00:39:16,867 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:16,867 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-10-01 00:39:16,868 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:16,868 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:16,868 INFO L82 PathProgramCache]: Analyzing trace with hash 863464897, now seen corresponding path program 56 times [2018-10-01 00:39:16,868 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:16,868 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:16,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:16,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:16,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:17,234 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 00:39:17,235 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:17,235 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:17,242 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:39:17,272 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:39:17,272 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:17,274 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:17,369 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 00:39:17,390 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:17,390 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-01 00:39:17,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-01 00:39:17,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-01 00:39:17,391 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:17,391 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-10-01 00:39:17,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:17,730 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-01 00:39:17,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-01 00:39:17,731 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-10-01 00:39:17,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:17,732 INFO L225 Difference]: With dead ends: 63 [2018-10-01 00:39:17,732 INFO L226 Difference]: Without dead ends: 61 [2018-10-01 00:39:17,732 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:39:17,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-01 00:39:17,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-01 00:39:17,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-01 00:39:17,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-01 00:39:17,736 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-10-01 00:39:17,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:17,736 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-01 00:39:17,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-01 00:39:17,736 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-01 00:39:17,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-01 00:39:17,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:17,737 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-10-01 00:39:17,737 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:17,737 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:17,737 INFO L82 PathProgramCache]: Analyzing trace with hash 997606056, now seen corresponding path program 57 times [2018-10-01 00:39:17,737 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:17,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:17,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:17,738 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:17,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:18,334 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 00:39:18,334 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:18,334 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:18,341 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:39:18,393 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-01 00:39:18,393 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:18,395 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:18,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:18,569 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:18,570 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-01 00:39:18,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-01 00:39:18,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-01 00:39:18,570 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:18,571 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-10-01 00:39:18,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:18,937 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-10-01 00:39:18,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-01 00:39:18,938 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-10-01 00:39:18,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:18,939 INFO L225 Difference]: With dead ends: 64 [2018-10-01 00:39:18,939 INFO L226 Difference]: Without dead ends: 62 [2018-10-01 00:39:18,939 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:39:18,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-01 00:39:18,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-01 00:39:18,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-01 00:39:18,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-01 00:39:18,943 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-10-01 00:39:18,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:18,944 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-01 00:39:18,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-01 00:39:18,944 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-01 00:39:18,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-01 00:39:18,944 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:18,944 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-10-01 00:39:18,944 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:18,945 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:18,945 INFO L82 PathProgramCache]: Analyzing trace with hash 861014689, now seen corresponding path program 58 times [2018-10-01 00:39:18,945 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:18,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:18,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:18,946 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:18,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:19,560 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 00:39:19,561 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:19,561 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:19,570 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:39:19,603 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:39:19,603 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:19,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:19,720 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 00:39:19,740 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:19,740 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-01 00:39:19,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-01 00:39:19,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-01 00:39:19,741 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:19,741 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-10-01 00:39:20,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:20,132 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-01 00:39:20,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-01 00:39:20,132 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-10-01 00:39:20,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:20,133 INFO L225 Difference]: With dead ends: 65 [2018-10-01 00:39:20,133 INFO L226 Difference]: Without dead ends: 63 [2018-10-01 00:39:20,134 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:39:20,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-01 00:39:20,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-01 00:39:20,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-01 00:39:20,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-01 00:39:20,137 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-10-01 00:39:20,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:20,137 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-01 00:39:20,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-01 00:39:20,137 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-01 00:39:20,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-01 00:39:20,137 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:20,137 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-10-01 00:39:20,138 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:20,138 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:20,138 INFO L82 PathProgramCache]: Analyzing trace with hash 921649608, now seen corresponding path program 59 times [2018-10-01 00:39:20,138 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:20,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:20,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:20,139 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:20,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:20,703 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 00:39:20,703 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:20,703 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:20,710 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:39:20,765 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-01 00:39:20,765 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:20,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:20,964 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 00:39:20,985 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:20,985 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-01 00:39:20,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-01 00:39:20,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-01 00:39:20,986 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:20,986 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-10-01 00:39:21,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:21,395 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-10-01 00:39:21,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-01 00:39:21,396 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-10-01 00:39:21,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:21,396 INFO L225 Difference]: With dead ends: 66 [2018-10-01 00:39:21,397 INFO L226 Difference]: Without dead ends: 64 [2018-10-01 00:39:21,397 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:39:21,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-01 00:39:21,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-01 00:39:21,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-01 00:39:21,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-01 00:39:21,400 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-10-01 00:39:21,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:21,400 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-01 00:39:21,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-01 00:39:21,400 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-01 00:39:21,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-01 00:39:21,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:21,401 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-10-01 00:39:21,401 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:21,401 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:21,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1493635199, now seen corresponding path program 60 times [2018-10-01 00:39:21,401 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:21,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:21,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:21,402 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:21,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:21,744 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 00:39:21,744 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:21,744 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:21,752 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:39:21,810 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-01 00:39:21,810 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:21,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:21,923 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 00:39:21,943 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:21,943 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-01 00:39:21,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-01 00:39:21,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-01 00:39:21,944 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:21,944 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-10-01 00:39:22,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:22,283 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-01 00:39:22,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-01 00:39:22,283 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-10-01 00:39:22,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:22,284 INFO L225 Difference]: With dead ends: 67 [2018-10-01 00:39:22,284 INFO L226 Difference]: Without dead ends: 65 [2018-10-01 00:39:22,284 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:39:22,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-01 00:39:22,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-01 00:39:22,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-01 00:39:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-01 00:39:22,286 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-10-01 00:39:22,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:22,286 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-01 00:39:22,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-01 00:39:22,286 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-01 00:39:22,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-01 00:39:22,287 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:22,287 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-10-01 00:39:22,287 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:22,287 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:22,287 INFO L82 PathProgramCache]: Analyzing trace with hash 941947112, now seen corresponding path program 61 times [2018-10-01 00:39:22,287 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:22,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:22,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:22,288 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:22,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:22,584 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 00:39:22,584 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:22,584 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:22,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:22,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:22,741 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 00:39:22,760 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:22,761 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-01 00:39:22,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-01 00:39:22,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-01 00:39:22,762 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:22,762 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-10-01 00:39:23,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:23,075 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-01 00:39:23,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-01 00:39:23,076 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-10-01 00:39:23,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:23,077 INFO L225 Difference]: With dead ends: 68 [2018-10-01 00:39:23,077 INFO L226 Difference]: Without dead ends: 66 [2018-10-01 00:39:23,077 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:39:23,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-01 00:39:23,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-01 00:39:23,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-01 00:39:23,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-01 00:39:23,080 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-10-01 00:39:23,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:23,080 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-01 00:39:23,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-01 00:39:23,080 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-01 00:39:23,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-01 00:39:23,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:23,080 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-10-01 00:39:23,081 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:23,081 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:23,081 INFO L82 PathProgramCache]: Analyzing trace with hash -864412575, now seen corresponding path program 62 times [2018-10-01 00:39:23,081 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:23,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:23,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:23,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:23,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:23,551 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 00:39:23,551 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:23,551 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:23,559 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:39:23,594 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:39:23,594 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:23,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:23,702 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 00:39:23,734 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:23,734 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-01 00:39:23,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-01 00:39:23,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-01 00:39:23,735 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:23,735 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-10-01 00:39:24,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:24,180 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-01 00:39:24,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-01 00:39:24,181 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-10-01 00:39:24,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:24,182 INFO L225 Difference]: With dead ends: 69 [2018-10-01 00:39:24,182 INFO L226 Difference]: Without dead ends: 67 [2018-10-01 00:39:24,182 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:39:24,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-01 00:39:24,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-01 00:39:24,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-01 00:39:24,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-01 00:39:24,186 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-10-01 00:39:24,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:24,186 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-01 00:39:24,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-01 00:39:24,186 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-01 00:39:24,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-01 00:39:24,186 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:24,186 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-10-01 00:39:24,187 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:24,187 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:24,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1026988024, now seen corresponding path program 63 times [2018-10-01 00:39:24,187 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:24,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:24,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:24,188 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:24,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:24,536 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 00:39:24,536 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:24,536 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:24,546 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:39:24,598 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-01 00:39:24,598 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:24,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:24,721 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 00:39:24,741 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:24,742 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-01 00:39:24,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-01 00:39:24,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-01 00:39:24,743 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:24,743 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-10-01 00:39:25,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:25,220 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-01 00:39:25,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-01 00:39:25,222 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-10-01 00:39:25,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:25,222 INFO L225 Difference]: With dead ends: 70 [2018-10-01 00:39:25,222 INFO L226 Difference]: Without dead ends: 68 [2018-10-01 00:39:25,222 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:39:25,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-01 00:39:25,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-01 00:39:25,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-01 00:39:25,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-01 00:39:25,225 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-10-01 00:39:25,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:25,226 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-01 00:39:25,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-01 00:39:25,226 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-01 00:39:25,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-01 00:39:25,226 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:25,226 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-10-01 00:39:25,232 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:25,233 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:25,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1771859647, now seen corresponding path program 64 times [2018-10-01 00:39:25,233 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:25,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:25,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:25,234 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:25,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:25,797 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 00:39:25,797 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:25,797 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-01 00:39:25,814 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:25,871 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:39:25,872 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:25,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:26,002 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 00:39:26,022 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:26,022 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-01 00:39:26,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-01 00:39:26,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-01 00:39:26,023 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:26,023 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-10-01 00:39:26,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:26,495 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-01 00:39:26,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-01 00:39:26,496 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-10-01 00:39:26,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:26,497 INFO L225 Difference]: With dead ends: 71 [2018-10-01 00:39:26,497 INFO L226 Difference]: Without dead ends: 69 [2018-10-01 00:39:26,497 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:39:26,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-01 00:39:26,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-01 00:39:26,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-01 00:39:26,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-01 00:39:26,500 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-10-01 00:39:26,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:26,500 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-01 00:39:26,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-01 00:39:26,501 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-01 00:39:26,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-01 00:39:26,501 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:26,501 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-10-01 00:39:26,501 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:26,501 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:26,501 INFO L82 PathProgramCache]: Analyzing trace with hash 906923816, now seen corresponding path program 65 times [2018-10-01 00:39:26,501 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:26,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:26,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:26,502 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:26,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:27,229 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 00:39:27,229 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:27,229 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:27,237 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:39:27,290 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-01 00:39:27,290 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:27,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:27,459 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 00:39:27,479 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:27,479 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-01 00:39:27,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-01 00:39:27,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-01 00:39:27,480 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:27,480 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-10-01 00:39:27,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:27,917 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-10-01 00:39:27,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-01 00:39:27,917 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-10-01 00:39:27,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:27,918 INFO L225 Difference]: With dead ends: 72 [2018-10-01 00:39:27,918 INFO L226 Difference]: Without dead ends: 70 [2018-10-01 00:39:27,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:39:27,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-01 00:39:27,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-01 00:39:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-01 00:39:27,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-01 00:39:27,920 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-10-01 00:39:27,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:27,921 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-01 00:39:27,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-01 00:39:27,921 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-01 00:39:27,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-01 00:39:27,921 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:27,921 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-10-01 00:39:27,921 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:27,922 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:27,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1950134751, now seen corresponding path program 66 times [2018-10-01 00:39:27,922 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:27,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:27,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:27,922 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:27,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:28,292 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 00:39:28,292 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:28,292 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:28,299 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:39:28,368 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-01 00:39:28,368 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:28,371 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:28,608 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 00:39:28,628 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:28,628 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-01 00:39:28,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-01 00:39:28,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-01 00:39:28,629 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:28,629 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-10-01 00:39:28,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:28,909 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-01 00:39:28,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-01 00:39:28,909 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-10-01 00:39:28,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:28,910 INFO L225 Difference]: With dead ends: 73 [2018-10-01 00:39:28,910 INFO L226 Difference]: Without dead ends: 71 [2018-10-01 00:39:28,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:39:28,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-01 00:39:28,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-01 00:39:28,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-01 00:39:28,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-01 00:39:28,912 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-10-01 00:39:28,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:28,913 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-01 00:39:28,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-01 00:39:28,913 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-01 00:39:28,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-01 00:39:28,913 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:28,913 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-10-01 00:39:28,914 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:28,914 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:28,914 INFO L82 PathProgramCache]: Analyzing trace with hash -324637112, now seen corresponding path program 67 times [2018-10-01 00:39:28,914 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:28,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:28,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:28,915 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:28,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:29,251 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 00:39:29,252 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:29,252 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:29,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:29,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:29,424 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 00:39:29,444 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:29,445 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-01 00:39:29,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-01 00:39:29,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-01 00:39:29,445 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:29,446 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-10-01 00:39:29,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:29,941 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-01 00:39:29,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-01 00:39:29,941 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-10-01 00:39:29,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:29,942 INFO L225 Difference]: With dead ends: 74 [2018-10-01 00:39:29,942 INFO L226 Difference]: Without dead ends: 72 [2018-10-01 00:39:29,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:39:29,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-01 00:39:29,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-01 00:39:29,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-01 00:39:29,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-01 00:39:29,945 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-10-01 00:39:29,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:29,946 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-01 00:39:29,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-01 00:39:29,946 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-01 00:39:29,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-01 00:39:29,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:29,946 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-10-01 00:39:29,946 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:29,947 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:29,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1473817855, now seen corresponding path program 68 times [2018-10-01 00:39:29,947 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:29,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:29,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:29,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:29,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:30,302 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 00:39:30,302 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:30,302 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:30,310 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:39:30,348 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:39:30,348 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:30,350 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:30,479 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 00:39:30,500 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:30,500 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-01 00:39:30,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-01 00:39:30,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-01 00:39:30,501 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:30,501 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-10-01 00:39:30,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:30,831 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-01 00:39:30,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-01 00:39:30,832 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-10-01 00:39:30,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:30,833 INFO L225 Difference]: With dead ends: 75 [2018-10-01 00:39:30,833 INFO L226 Difference]: Without dead ends: 73 [2018-10-01 00:39:30,833 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:39:30,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-01 00:39:30,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-01 00:39:30,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-01 00:39:30,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-01 00:39:30,836 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-10-01 00:39:30,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:30,836 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-01 00:39:30,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-01 00:39:30,837 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-01 00:39:30,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-01 00:39:30,837 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:30,838 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-10-01 00:39:30,838 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:30,838 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:30,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1556284776, now seen corresponding path program 69 times [2018-10-01 00:39:30,838 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:30,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:30,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:30,839 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:30,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:31,232 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 00:39:31,232 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:31,233 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:31,240 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:39:31,577 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-01 00:39:31,578 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:31,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:31,958 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 00:39:31,979 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:31,979 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-01 00:39:31,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-01 00:39:31,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-01 00:39:31,980 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:31,980 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-10-01 00:39:32,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:32,520 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-01 00:39:32,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-01 00:39:32,521 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-10-01 00:39:32,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:32,522 INFO L225 Difference]: With dead ends: 76 [2018-10-01 00:39:32,522 INFO L226 Difference]: Without dead ends: 74 [2018-10-01 00:39:32,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:39:32,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-01 00:39:32,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-01 00:39:32,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-01 00:39:32,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-01 00:39:32,526 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-10-01 00:39:32,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:32,526 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-01 00:39:32,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-01 00:39:32,526 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-01 00:39:32,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-01 00:39:32,527 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:32,527 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-10-01 00:39:32,527 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:32,527 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:32,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1000185825, now seen corresponding path program 70 times [2018-10-01 00:39:32,527 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:32,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:32,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:32,528 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:32,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:32,996 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 00:39:32,997 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:32,997 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:33,005 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:39:33,052 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:39:33,053 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:33,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:33,205 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 00:39:33,226 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:33,227 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-01 00:39:33,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-01 00:39:33,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-01 00:39:33,228 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:33,228 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-10-01 00:39:33,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:33,753 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-01 00:39:33,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-01 00:39:33,754 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-10-01 00:39:33,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:33,754 INFO L225 Difference]: With dead ends: 77 [2018-10-01 00:39:33,754 INFO L226 Difference]: Without dead ends: 75 [2018-10-01 00:39:33,754 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:39:33,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-01 00:39:33,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-01 00:39:33,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-01 00:39:33,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-01 00:39:33,758 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-10-01 00:39:33,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:33,758 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-01 00:39:33,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-01 00:39:33,758 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-01 00:39:33,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-01 00:39:33,759 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:33,759 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-10-01 00:39:33,759 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:33,759 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:33,759 INFO L82 PathProgramCache]: Analyzing trace with hash 940987528, now seen corresponding path program 71 times [2018-10-01 00:39:33,760 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:33,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:33,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:33,760 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:33,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:34,514 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 00:39:34,515 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:34,515 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:34,522 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:39:34,578 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-01 00:39:34,578 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:34,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:34,964 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 00:39:34,985 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:34,985 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-01 00:39:34,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-01 00:39:34,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-01 00:39:34,986 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:34,986 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-10-01 00:39:35,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:35,464 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-10-01 00:39:35,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-01 00:39:35,464 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-10-01 00:39:35,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:35,465 INFO L225 Difference]: With dead ends: 78 [2018-10-01 00:39:35,465 INFO L226 Difference]: Without dead ends: 76 [2018-10-01 00:39:35,466 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:39:35,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-01 00:39:35,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-01 00:39:35,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-01 00:39:35,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-01 00:39:35,470 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-10-01 00:39:35,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:35,470 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-01 00:39:35,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-01 00:39:35,470 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-01 00:39:35,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-01 00:39:35,471 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:35,471 INFO L375 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-10-01 00:39:35,471 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:35,472 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:35,472 INFO L82 PathProgramCache]: Analyzing trace with hash -894159679, now seen corresponding path program 72 times [2018-10-01 00:39:35,472 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:35,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:35,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:35,473 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:35,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:35,935 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 00:39:35,935 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:35,935 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:35,943 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:39:36,004 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-01 00:39:36,004 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:36,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:36,148 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 00:39:36,168 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:36,168 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-01 00:39:36,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-01 00:39:36,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-01 00:39:36,169 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:36,169 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-10-01 00:39:36,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:36,670 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-01 00:39:36,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-01 00:39:36,670 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-10-01 00:39:36,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:36,671 INFO L225 Difference]: With dead ends: 79 [2018-10-01 00:39:36,671 INFO L226 Difference]: Without dead ends: 77 [2018-10-01 00:39:36,671 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:39:36,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-01 00:39:36,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-01 00:39:36,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-01 00:39:36,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-01 00:39:36,674 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-10-01 00:39:36,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:36,674 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-01 00:39:36,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-01 00:39:36,674 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-01 00:39:36,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-01 00:39:36,674 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:36,674 INFO L375 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-10-01 00:39:36,675 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:36,675 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:36,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1949148248, now seen corresponding path program 73 times [2018-10-01 00:39:36,675 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:36,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:36,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:36,676 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:36,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:37,919 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 00:39:37,919 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:37,919 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:37,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:37,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:38,119 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 00:39:38,139 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:38,139 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-01 00:39:38,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-01 00:39:38,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-01 00:39:38,140 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:38,140 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-10-01 00:39:38,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:38,768 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-10-01 00:39:38,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-01 00:39:38,768 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-10-01 00:39:38,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:38,768 INFO L225 Difference]: With dead ends: 80 [2018-10-01 00:39:38,769 INFO L226 Difference]: Without dead ends: 78 [2018-10-01 00:39:38,769 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:39:38,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-01 00:39:38,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-01 00:39:38,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-01 00:39:38,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-01 00:39:38,771 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-10-01 00:39:38,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:38,771 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-01 00:39:38,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-01 00:39:38,772 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-01 00:39:38,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-01 00:39:38,772 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:38,772 INFO L375 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-10-01 00:39:38,772 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:38,772 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:38,772 INFO L82 PathProgramCache]: Analyzing trace with hash -294055519, now seen corresponding path program 74 times [2018-10-01 00:39:38,773 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:38,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:38,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:38,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:38,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:39,279 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 00:39:39,280 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:39,280 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:39,287 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:39:39,326 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:39:39,327 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:39,329 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:39,470 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 00:39:39,491 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:39,491 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-01 00:39:39,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-01 00:39:39,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-01 00:39:39,492 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:39,493 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. [2018-10-01 00:39:39,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:39,989 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-01 00:39:39,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-01 00:39:39,990 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 77 [2018-10-01 00:39:39,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:39,991 INFO L225 Difference]: With dead ends: 81 [2018-10-01 00:39:39,991 INFO L226 Difference]: Without dead ends: 79 [2018-10-01 00:39:39,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:39:39,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-01 00:39:39,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-01 00:39:39,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-01 00:39:39,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-01 00:39:39,993 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-10-01 00:39:39,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:39,994 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-01 00:39:39,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-01 00:39:39,994 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-01 00:39:39,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-01 00:39:39,995 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:39,995 INFO L375 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-10-01 00:39:39,995 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:39,995 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:39,995 INFO L82 PathProgramCache]: Analyzing trace with hash -525788472, now seen corresponding path program 75 times [2018-10-01 00:39:39,996 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:39,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:39,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:39,996 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:39,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:41,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:41,026 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:41,026 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:41,033 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:39:41,095 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-10-01 00:39:41,095 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:41,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:41,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:41,254 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:41,254 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-01 00:39:41,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-01 00:39:41,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-01 00:39:41,255 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:41,255 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 78 states. [2018-10-01 00:39:43,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:43,063 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-10-01 00:39:43,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-01 00:39:43,063 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2018-10-01 00:39:43,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:43,064 INFO L225 Difference]: With dead ends: 82 [2018-10-01 00:39:43,064 INFO L226 Difference]: Without dead ends: 80 [2018-10-01 00:39:43,064 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:39:43,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-01 00:39:43,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-10-01 00:39:43,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-01 00:39:43,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-01 00:39:43,068 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-10-01 00:39:43,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:43,068 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-01 00:39:43,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-01 00:39:43,068 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-01 00:39:43,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-01 00:39:43,068 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:43,069 INFO L375 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-10-01 00:39:43,069 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:43,069 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:43,069 INFO L82 PathProgramCache]: Analyzing trace with hash 880424577, now seen corresponding path program 76 times [2018-10-01 00:39:43,069 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:43,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:43,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:43,070 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:43,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:43,617 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:43,617 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:43,624 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:39:43,675 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:39:43,676 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:43,678 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:43,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:43,985 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:43,985 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-01 00:39:43,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-01 00:39:43,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-01 00:39:43,986 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:43,986 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 79 states. [2018-10-01 00:39:44,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:44,612 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-01 00:39:44,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-01 00:39:44,613 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 79 [2018-10-01 00:39:44,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:44,614 INFO L225 Difference]: With dead ends: 83 [2018-10-01 00:39:44,614 INFO L226 Difference]: Without dead ends: 81 [2018-10-01 00:39:44,614 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:39:44,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-01 00:39:44,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-01 00:39:44,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-01 00:39:44,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-01 00:39:44,616 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-10-01 00:39:44,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:44,616 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-01 00:39:44,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-01 00:39:44,617 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-01 00:39:44,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-01 00:39:44,617 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:44,617 INFO L375 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-10-01 00:39:44,617 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:44,618 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:44,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1523356136, now seen corresponding path program 77 times [2018-10-01 00:39:44,618 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:44,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:44,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:44,619 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:44,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:45,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:45,040 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:45,040 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:45,047 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:39:45,150 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-10-01 00:39:45,150 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:45,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:45,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:45,322 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:45,322 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-01 00:39:45,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-01 00:39:45,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-01 00:39:45,323 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:45,323 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 80 states. [2018-10-01 00:39:45,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:45,888 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-10-01 00:39:45,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-01 00:39:45,889 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 80 [2018-10-01 00:39:45,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:45,890 INFO L225 Difference]: With dead ends: 84 [2018-10-01 00:39:45,890 INFO L226 Difference]: Without dead ends: 82 [2018-10-01 00:39:45,890 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:39:45,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-01 00:39:45,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-10-01 00:39:45,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-01 00:39:45,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-10-01 00:39:45,894 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-10-01 00:39:45,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:45,894 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-10-01 00:39:45,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-01 00:39:45,895 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-10-01 00:39:45,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-01 00:39:45,895 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:45,895 INFO L375 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-10-01 00:39:45,895 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:45,896 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:45,896 INFO L82 PathProgramCache]: Analyzing trace with hash -20602015, now seen corresponding path program 78 times [2018-10-01 00:39:45,896 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:45,896 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:45,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:45,897 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:45,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:46,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:46,888 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:46,888 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:46,896 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:39:47,141 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2018-10-01 00:39:47,142 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:47,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:47,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:47,315 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:47,315 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-01 00:39:47,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-01 00:39:47,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-01 00:39:47,316 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:47,316 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 81 states. [2018-10-01 00:39:47,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:47,665 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-01 00:39:47,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-01 00:39:47,666 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 81 [2018-10-01 00:39:47,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:47,667 INFO L225 Difference]: With dead ends: 85 [2018-10-01 00:39:47,667 INFO L226 Difference]: Without dead ends: 83 [2018-10-01 00:39:47,667 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:39:47,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-01 00:39:47,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-01 00:39:47,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-01 00:39:47,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-01 00:39:47,669 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-10-01 00:39:47,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:47,669 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-01 00:39:47,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-01 00:39:47,670 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-01 00:39:47,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-01 00:39:47,670 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:47,670 INFO L375 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-10-01 00:39:47,671 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:47,671 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:47,671 INFO L82 PathProgramCache]: Analyzing trace with hash -638664440, now seen corresponding path program 79 times [2018-10-01 00:39:47,671 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:47,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:47,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:47,672 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:47,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:48,507 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:48,507 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:48,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:48,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:48,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:48,798 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:48,798 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-01 00:39:48,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-01 00:39:48,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-01 00:39:48,799 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:48,800 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 82 states. [2018-10-01 00:39:49,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:49,440 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-10-01 00:39:49,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-01 00:39:49,441 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82 [2018-10-01 00:39:49,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:49,442 INFO L225 Difference]: With dead ends: 86 [2018-10-01 00:39:49,442 INFO L226 Difference]: Without dead ends: 84 [2018-10-01 00:39:49,442 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:39:49,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-01 00:39:49,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-10-01 00:39:49,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-01 00:39:49,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-10-01 00:39:49,445 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-10-01 00:39:49,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:49,445 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-10-01 00:39:49,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-01 00:39:49,445 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-10-01 00:39:49,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-01 00:39:49,446 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:49,446 INFO L375 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-10-01 00:39:49,446 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:49,446 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:49,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1676236865, now seen corresponding path program 80 times [2018-10-01 00:39:49,446 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:49,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:49,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:49,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:49,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:49,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:49,887 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:49,887 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:49,894 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:39:49,937 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:39:49,938 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:49,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:51,418 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:51,418 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-01 00:39:51,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-01 00:39:51,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-01 00:39:51,419 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:51,419 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 83 states. [2018-10-01 00:39:51,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:51,970 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-01 00:39:51,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-01 00:39:51,971 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 83 [2018-10-01 00:39:51,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:51,972 INFO L225 Difference]: With dead ends: 87 [2018-10-01 00:39:51,972 INFO L226 Difference]: Without dead ends: 85 [2018-10-01 00:39:51,972 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:39:51,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-01 00:39:51,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-01 00:39:51,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-01 00:39:51,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-01 00:39:51,975 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-10-01 00:39:51,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:51,975 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-01 00:39:51,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-01 00:39:51,976 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-01 00:39:51,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-01 00:39:51,976 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:51,976 INFO L375 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-10-01 00:39:51,976 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:51,976 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:51,976 INFO L82 PathProgramCache]: Analyzing trace with hash 423733288, now seen corresponding path program 81 times [2018-10-01 00:39:51,977 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:51,977 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:51,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:51,977 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:51,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:52,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:52,569 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:52,569 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:52,576 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:39:52,643 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-10-01 00:39:52,643 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:52,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:52,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:52,819 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:52,819 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-01 00:39:52,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-01 00:39:52,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-01 00:39:52,820 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:52,820 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 84 states. [2018-10-01 00:39:53,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:53,280 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-10-01 00:39:53,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-01 00:39:53,280 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 84 [2018-10-01 00:39:53,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:53,281 INFO L225 Difference]: With dead ends: 88 [2018-10-01 00:39:53,281 INFO L226 Difference]: Without dead ends: 86 [2018-10-01 00:39:53,281 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:39:53,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-01 00:39:53,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-01 00:39:53,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-01 00:39:53,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-10-01 00:39:53,283 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-10-01 00:39:53,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:53,283 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-10-01 00:39:53,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-01 00:39:53,284 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-10-01 00:39:53,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-01 00:39:53,284 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:53,284 INFO L375 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-10-01 00:39:53,284 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:53,284 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:53,284 INFO L82 PathProgramCache]: Analyzing trace with hash 250828065, now seen corresponding path program 82 times [2018-10-01 00:39:53,285 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:53,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:53,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:53,285 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:53,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:54,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:54,076 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:54,076 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:54,083 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:39:54,128 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:39:54,128 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:54,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:55,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:55,520 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:55,520 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-01 00:39:55,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-01 00:39:55,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-01 00:39:55,521 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:55,521 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 85 states. [2018-10-01 00:39:56,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:56,196 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-01 00:39:56,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-01 00:39:56,196 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 85 [2018-10-01 00:39:56,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:56,197 INFO L225 Difference]: With dead ends: 89 [2018-10-01 00:39:56,197 INFO L226 Difference]: Without dead ends: 87 [2018-10-01 00:39:56,198 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:39:56,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-01 00:39:56,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-01 00:39:56,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-01 00:39:56,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-01 00:39:56,200 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-10-01 00:39:56,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:56,200 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-01 00:39:56,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-01 00:39:56,200 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-01 00:39:56,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-01 00:39:56,200 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:56,201 INFO L375 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-10-01 00:39:56,201 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:56,201 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:56,201 INFO L82 PathProgramCache]: Analyzing trace with hash -814266552, now seen corresponding path program 83 times [2018-10-01 00:39:56,201 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:56,201 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:56,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:56,202 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:56,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:57,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:57,334 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:57,334 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:57,342 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:39:57,415 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-01 00:39:57,415 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:57,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:57,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:57,595 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:57,595 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-01 00:39:57,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-01 00:39:57,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-01 00:39:57,596 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:57,597 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 86 states. [2018-10-01 00:39:58,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:58,192 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-10-01 00:39:58,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-01 00:39:58,193 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86 [2018-10-01 00:39:58,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:58,194 INFO L225 Difference]: With dead ends: 90 [2018-10-01 00:39:58,194 INFO L226 Difference]: Without dead ends: 88 [2018-10-01 00:39:58,194 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:39:58,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-01 00:39:58,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-10-01 00:39:58,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-01 00:39:58,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-10-01 00:39:58,197 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-10-01 00:39:58,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:58,197 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-10-01 00:39:58,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-01 00:39:58,197 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-10-01 00:39:58,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-01 00:39:58,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:58,198 INFO L375 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-10-01 00:39:58,198 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:58,198 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:58,198 INFO L82 PathProgramCache]: Analyzing trace with hash 527538689, now seen corresponding path program 84 times [2018-10-01 00:39:58,198 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:58,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:58,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:58,199 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:58,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:58,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:58,638 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:58,638 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:58,648 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:39:58,716 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-01 00:39:58,717 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:58,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:58,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:58,902 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:58,902 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-01 00:39:58,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-01 00:39:58,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-01 00:39:58,903 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:58,904 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 87 states. [2018-10-01 00:39:59,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:59,551 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-01 00:39:59,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-01 00:39:59,552 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 87 [2018-10-01 00:39:59,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:59,552 INFO L225 Difference]: With dead ends: 91 [2018-10-01 00:39:59,552 INFO L226 Difference]: Without dead ends: 89 [2018-10-01 00:39:59,553 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:39:59,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-01 00:39:59,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-01 00:39:59,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-01 00:39:59,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-01 00:39:59,555 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-10-01 00:39:59,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:59,556 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-01 00:39:59,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-01 00:39:59,556 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-01 00:39:59,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-01 00:39:59,557 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:59,557 INFO L375 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-10-01 00:39:59,557 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:59,557 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:59,558 INFO L82 PathProgramCache]: Analyzing trace with hash -826171800, now seen corresponding path program 85 times [2018-10-01 00:39:59,558 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:59,558 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:59,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:59,559 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:59,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:00,113 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:00,113 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:00,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:00,168 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:00,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:00,343 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:00,343 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-01 00:40:00,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-01 00:40:00,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-01 00:40:00,345 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:00,345 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 88 states. [2018-10-01 00:40:00,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:00,729 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-10-01 00:40:00,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-01 00:40:00,730 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 88 [2018-10-01 00:40:00,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:00,731 INFO L225 Difference]: With dead ends: 92 [2018-10-01 00:40:00,731 INFO L226 Difference]: Without dead ends: 90 [2018-10-01 00:40:00,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:40:00,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-01 00:40:00,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-10-01 00:40:00,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-01 00:40:00,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-10-01 00:40:00,733 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-10-01 00:40:00,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:00,734 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-10-01 00:40:00,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-01 00:40:00,734 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-10-01 00:40:00,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-01 00:40:00,735 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:00,735 INFO L375 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-10-01 00:40:00,735 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:00,735 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:00,735 INFO L82 PathProgramCache]: Analyzing trace with hash 158476001, now seen corresponding path program 86 times [2018-10-01 00:40:00,735 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:00,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:00,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:00,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:00,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:01,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:01,257 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:01,257 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:01,264 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:40:01,307 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:40:01,307 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:01,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:01,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:01,479 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:01,480 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-01 00:40:01,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-01 00:40:01,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-01 00:40:01,481 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:01,481 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 89 states. [2018-10-01 00:40:01,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:01,862 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-01 00:40:01,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-01 00:40:01,862 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 89 [2018-10-01 00:40:01,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:01,863 INFO L225 Difference]: With dead ends: 93 [2018-10-01 00:40:01,863 INFO L226 Difference]: Without dead ends: 91 [2018-10-01 00:40:01,863 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:40:01,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-01 00:40:01,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-01 00:40:01,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-01 00:40:01,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-01 00:40:01,865 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-10-01 00:40:01,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:01,865 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-01 00:40:01,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-01 00:40:01,865 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-01 00:40:01,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-01 00:40:01,866 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:01,866 INFO L375 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-10-01 00:40:01,866 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:01,866 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:01,866 INFO L82 PathProgramCache]: Analyzing trace with hash 617786760, now seen corresponding path program 87 times [2018-10-01 00:40:01,866 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:01,866 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:01,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:01,867 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:01,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:02,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:02,399 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:02,399 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:02,410 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:40:02,485 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2018-10-01 00:40:02,485 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:02,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:02,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:02,669 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:02,670 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-01 00:40:02,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-01 00:40:02,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-01 00:40:02,671 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:02,671 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 90 states. [2018-10-01 00:40:03,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:03,048 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-10-01 00:40:03,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-01 00:40:03,049 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90 [2018-10-01 00:40:03,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:03,050 INFO L225 Difference]: With dead ends: 94 [2018-10-01 00:40:03,050 INFO L226 Difference]: Without dead ends: 92 [2018-10-01 00:40:03,050 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:40:03,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-01 00:40:03,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-01 00:40:03,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-01 00:40:03,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-10-01 00:40:03,053 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-10-01 00:40:03,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:03,053 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-10-01 00:40:03,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-01 00:40:03,053 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-10-01 00:40:03,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-01 00:40:03,054 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:03,054 INFO L375 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-10-01 00:40:03,054 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:03,054 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:03,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1971518401, now seen corresponding path program 88 times [2018-10-01 00:40:03,054 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:03,055 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:03,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:03,055 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:03,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:03,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:03,781 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:03,781 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:03,787 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:40:03,832 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:40:03,833 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:03,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:04,014 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:04,014 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-01 00:40:04,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-01 00:40:04,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-01 00:40:04,015 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:04,015 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 91 states. [2018-10-01 00:40:04,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:04,577 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-01 00:40:04,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-01 00:40:04,577 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 91 [2018-10-01 00:40:04,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:04,578 INFO L225 Difference]: With dead ends: 95 [2018-10-01 00:40:04,578 INFO L226 Difference]: Without dead ends: 93 [2018-10-01 00:40:04,578 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:40:04,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-01 00:40:04,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-01 00:40:04,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-01 00:40:04,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-01 00:40:04,581 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-10-01 00:40:04,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:04,581 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-01 00:40:04,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-01 00:40:04,582 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-01 00:40:04,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-01 00:40:04,582 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:04,582 INFO L375 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-10-01 00:40:04,582 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:04,582 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:04,582 INFO L82 PathProgramCache]: Analyzing trace with hash 987526312, now seen corresponding path program 89 times [2018-10-01 00:40:04,583 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:04,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:04,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:04,583 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:04,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:05,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:05,055 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:05,055 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:05,061 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:40:05,139 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-10-01 00:40:05,139 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:05,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:05,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:05,328 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:05,329 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-01 00:40:05,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-01 00:40:05,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-01 00:40:05,330 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:05,330 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 92 states. [2018-10-01 00:40:05,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:05,775 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-10-01 00:40:05,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-01 00:40:05,775 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 92 [2018-10-01 00:40:05,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:05,776 INFO L225 Difference]: With dead ends: 96 [2018-10-01 00:40:05,776 INFO L226 Difference]: Without dead ends: 94 [2018-10-01 00:40:05,776 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:40:05,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-01 00:40:05,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-10-01 00:40:05,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-01 00:40:05,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-01 00:40:05,778 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-10-01 00:40:05,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:05,778 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-01 00:40:05,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-01 00:40:05,779 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-01 00:40:05,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-01 00:40:05,779 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:05,779 INFO L375 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-10-01 00:40:05,779 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:05,779 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:05,779 INFO L82 PathProgramCache]: Analyzing trace with hash 548542625, now seen corresponding path program 90 times [2018-10-01 00:40:05,780 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:05,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:05,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:05,780 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:05,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:06,263 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:06,264 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:06,271 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:40:06,346 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2018-10-01 00:40:06,346 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:06,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:06,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:06,537 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:06,537 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-01 00:40:06,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-01 00:40:06,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-01 00:40:06,538 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:06,538 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 93 states. [2018-10-01 00:40:07,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:07,047 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-01 00:40:07,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-01 00:40:07,048 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 93 [2018-10-01 00:40:07,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:07,048 INFO L225 Difference]: With dead ends: 97 [2018-10-01 00:40:07,048 INFO L226 Difference]: Without dead ends: 95 [2018-10-01 00:40:07,049 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:40:07,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-01 00:40:07,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-01 00:40:07,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-01 00:40:07,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-01 00:40:07,052 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-10-01 00:40:07,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:07,052 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-01 00:40:07,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-01 00:40:07,052 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-01 00:40:07,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-01 00:40:07,053 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:07,053 INFO L375 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-10-01 00:40:07,053 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:07,053 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:07,053 INFO L82 PathProgramCache]: Analyzing trace with hash -175049784, now seen corresponding path program 91 times [2018-10-01 00:40:07,053 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:07,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:07,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:07,054 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:07,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:07,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:07,746 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:07,746 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:07,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:07,803 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:07,984 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:07,985 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-01 00:40:07,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-01 00:40:07,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-01 00:40:07,986 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:07,986 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2018-10-01 00:40:08,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:08,680 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-10-01 00:40:08,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-01 00:40:08,681 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94 [2018-10-01 00:40:08,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:08,681 INFO L225 Difference]: With dead ends: 98 [2018-10-01 00:40:08,682 INFO L226 Difference]: Without dead ends: 96 [2018-10-01 00:40:08,682 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:40:08,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-01 00:40:08,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-01 00:40:08,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-01 00:40:08,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-01 00:40:08,685 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-10-01 00:40:08,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:08,685 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-01 00:40:08,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-01 00:40:08,685 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-01 00:40:08,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-01 00:40:08,685 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:08,685 INFO L375 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-10-01 00:40:08,686 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:08,686 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:08,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1131577983, now seen corresponding path program 92 times [2018-10-01 00:40:08,686 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:08,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:08,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:08,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:08,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:09,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:09,199 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:09,199 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:09,205 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:40:09,255 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:40:09,255 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:09,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:09,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:09,614 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:09,614 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-01 00:40:09,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-01 00:40:09,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-01 00:40:09,615 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:09,615 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 95 states. [2018-10-01 00:40:10,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:10,025 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-01 00:40:10,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-01 00:40:10,025 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 95 [2018-10-01 00:40:10,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:10,026 INFO L225 Difference]: With dead ends: 99 [2018-10-01 00:40:10,026 INFO L226 Difference]: Without dead ends: 97 [2018-10-01 00:40:10,027 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:40:10,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-01 00:40:10,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-01 00:40:10,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-01 00:40:10,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-01 00:40:10,030 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-10-01 00:40:10,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:10,030 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-01 00:40:10,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-01 00:40:10,030 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-01 00:40:10,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-01 00:40:10,031 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:10,031 INFO L375 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-10-01 00:40:10,031 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:10,031 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:10,031 INFO L82 PathProgramCache]: Analyzing trace with hash -719181080, now seen corresponding path program 93 times [2018-10-01 00:40:10,031 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:10,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:10,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:10,032 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:10,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:10,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:10,687 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:10,687 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:10,695 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:40:10,777 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2018-10-01 00:40:10,777 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:10,780 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:11,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:11,159 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:11,160 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-01 00:40:11,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-01 00:40:11,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-01 00:40:11,161 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:11,161 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 96 states. [2018-10-01 00:40:11,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:11,720 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-10-01 00:40:11,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-01 00:40:11,721 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 96 [2018-10-01 00:40:11,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:11,721 INFO L225 Difference]: With dead ends: 100 [2018-10-01 00:40:11,722 INFO L226 Difference]: Without dead ends: 98 [2018-10-01 00:40:11,722 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:40:11,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-01 00:40:11,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-10-01 00:40:11,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-10-01 00:40:11,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-10-01 00:40:11,725 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-10-01 00:40:11,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:11,725 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-10-01 00:40:11,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-01 00:40:11,725 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-10-01 00:40:11,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-01 00:40:11,726 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:11,726 INFO L375 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-10-01 00:40:11,726 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:11,726 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:11,726 INFO L82 PathProgramCache]: Analyzing trace with hash -819778975, now seen corresponding path program 94 times [2018-10-01 00:40:11,726 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:11,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:11,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:11,727 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:11,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:12,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:12,219 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:12,219 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:12,227 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:40:12,277 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:40:12,277 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:12,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:12,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:12,481 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:12,481 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-01 00:40:12,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-01 00:40:12,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-01 00:40:12,482 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:12,483 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 97 states. [2018-10-01 00:40:12,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:12,909 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-01 00:40:12,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-01 00:40:12,909 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 97 [2018-10-01 00:40:12,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:12,910 INFO L225 Difference]: With dead ends: 101 [2018-10-01 00:40:12,910 INFO L226 Difference]: Without dead ends: 99 [2018-10-01 00:40:12,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:40:12,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-01 00:40:12,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-01 00:40:12,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-01 00:40:12,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-01 00:40:12,913 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-10-01 00:40:12,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:12,913 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-01 00:40:12,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-01 00:40:12,914 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-01 00:40:12,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-01 00:40:12,914 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:12,914 INFO L375 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-10-01 00:40:12,914 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:12,915 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:12,915 INFO L82 PathProgramCache]: Analyzing trace with hash 356653576, now seen corresponding path program 95 times [2018-10-01 00:40:12,915 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:12,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:12,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:12,916 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:12,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:13,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:13,424 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:13,424 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:13,432 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:40:13,520 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-01 00:40:13,520 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:13,525 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:13,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:13,721 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:13,721 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-01 00:40:13,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-01 00:40:13,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-01 00:40:13,722 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:13,722 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 98 states. [2018-10-01 00:40:14,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:14,428 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-10-01 00:40:14,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-01 00:40:14,429 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98 [2018-10-01 00:40:14,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:14,429 INFO L225 Difference]: With dead ends: 102 [2018-10-01 00:40:14,429 INFO L226 Difference]: Without dead ends: 100 [2018-10-01 00:40:14,429 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:40:14,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-01 00:40:14,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-01 00:40:14,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-01 00:40:14,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-10-01 00:40:14,433 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-10-01 00:40:14,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:14,433 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-10-01 00:40:14,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-01 00:40:14,433 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-10-01 00:40:14,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-01 00:40:14,433 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:14,433 INFO L375 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-10-01 00:40:14,434 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:14,434 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:14,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1828643007, now seen corresponding path program 96 times [2018-10-01 00:40:14,434 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:14,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:14,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:14,435 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:14,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:15,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:15,128 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:15,128 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:15,135 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:40:15,243 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-01 00:40:15,243 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:15,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:15,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:15,441 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:15,441 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-01 00:40:15,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-01 00:40:15,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-01 00:40:15,442 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:15,442 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 99 states. [2018-10-01 00:40:15,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:15,908 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-01 00:40:15,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-01 00:40:15,909 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 99 [2018-10-01 00:40:15,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:15,909 INFO L225 Difference]: With dead ends: 103 [2018-10-01 00:40:15,909 INFO L226 Difference]: Without dead ends: 101 [2018-10-01 00:40:15,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:40:15,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-01 00:40:15,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-01 00:40:15,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-01 00:40:15,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-01 00:40:15,913 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-10-01 00:40:15,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:15,913 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-01 00:40:15,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-01 00:40:15,913 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-01 00:40:15,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-01 00:40:15,913 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:15,913 INFO L375 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-10-01 00:40:15,914 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:15,914 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:15,914 INFO L82 PathProgramCache]: Analyzing trace with hash -853360344, now seen corresponding path program 97 times [2018-10-01 00:40:15,914 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:15,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:15,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:15,915 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:15,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:16,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:16,447 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:16,447 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:16,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:16,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:16,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:16,707 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:16,707 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-01 00:40:16,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-01 00:40:16,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-01 00:40:16,708 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:16,708 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 100 states. [2018-10-01 00:40:17,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:17,218 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-01 00:40:17,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-01 00:40:17,219 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 100 [2018-10-01 00:40:17,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:17,219 INFO L225 Difference]: With dead ends: 104 [2018-10-01 00:40:17,219 INFO L226 Difference]: Without dead ends: 102 [2018-10-01 00:40:17,220 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:40:17,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-10-01 00:40:17,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-10-01 00:40:17,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-10-01 00:40:17,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-10-01 00:40:17,222 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-10-01 00:40:17,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:17,222 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-10-01 00:40:17,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-01 00:40:17,222 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-10-01 00:40:17,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-01 00:40:17,223 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:17,223 INFO L375 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-10-01 00:40:17,223 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:17,223 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:17,223 INFO L82 PathProgramCache]: Analyzing trace with hash -684368863, now seen corresponding path program 98 times [2018-10-01 00:40:17,224 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:17,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:17,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:17,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:17,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:17,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:17,759 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:17,760 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:17,767 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:40:17,820 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:40:17,820 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:17,823 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:18,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:18,030 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:18,030 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-01 00:40:18,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-01 00:40:18,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-01 00:40:18,031 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:18,032 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2018-10-01 00:40:18,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:18,800 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-01 00:40:18,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-01 00:40:18,801 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2018-10-01 00:40:18,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:18,802 INFO L225 Difference]: With dead ends: 105 [2018-10-01 00:40:18,802 INFO L226 Difference]: Without dead ends: 103 [2018-10-01 00:40:18,802 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:40:18,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-01 00:40:18,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-01 00:40:18,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-01 00:40:18,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-01 00:40:18,806 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-10-01 00:40:18,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:18,806 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-01 00:40:18,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-01 00:40:18,806 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-01 00:40:18,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-01 00:40:18,806 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:18,806 INFO L375 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-10-01 00:40:18,807 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:18,807 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:18,807 INFO L82 PathProgramCache]: Analyzing trace with hash 259399752, now seen corresponding path program 99 times [2018-10-01 00:40:18,807 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:18,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:18,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:18,808 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:18,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:19,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:19,348 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:19,348 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:19,369 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:40:19,464 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2018-10-01 00:40:19,465 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:19,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:19,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:19,832 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:19,832 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-01 00:40:19,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-01 00:40:19,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-01 00:40:19,833 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:19,834 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 102 states. [2018-10-01 00:40:20,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:20,614 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-10-01 00:40:20,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-01 00:40:20,615 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102 [2018-10-01 00:40:20,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:20,616 INFO L225 Difference]: With dead ends: 106 [2018-10-01 00:40:20,616 INFO L226 Difference]: Without dead ends: 104 [2018-10-01 00:40:20,616 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:40:20,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-01 00:40:20,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-10-01 00:40:20,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-01 00:40:20,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-10-01 00:40:20,619 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-10-01 00:40:20,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:20,619 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-10-01 00:40:20,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-01 00:40:20,619 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-10-01 00:40:20,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-01 00:40:20,620 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:20,620 INFO L375 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-10-01 00:40:20,620 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:20,620 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:20,620 INFO L82 PathProgramCache]: Analyzing trace with hash -548544255, now seen corresponding path program 100 times [2018-10-01 00:40:20,621 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:20,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:20,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:20,621 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:20,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:21,182 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:21,182 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:21,182 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:21,189 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:40:21,240 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:40:21,240 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:21,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:21,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:21,448 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:21,448 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-01 00:40:21,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-01 00:40:21,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-01 00:40:21,449 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:21,450 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 103 states. [2018-10-01 00:40:22,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:22,281 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-01 00:40:22,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-01 00:40:22,282 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 103 [2018-10-01 00:40:22,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:22,283 INFO L225 Difference]: With dead ends: 107 [2018-10-01 00:40:22,283 INFO L226 Difference]: Without dead ends: 105 [2018-10-01 00:40:22,283 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:40:22,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-01 00:40:22,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-01 00:40:22,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-01 00:40:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-01 00:40:22,286 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-10-01 00:40:22,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:22,286 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-01 00:40:22,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-01 00:40:22,286 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-01 00:40:22,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-01 00:40:22,287 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:22,287 INFO L375 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-10-01 00:40:22,287 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:22,287 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:22,288 INFO L82 PathProgramCache]: Analyzing trace with hash 174995304, now seen corresponding path program 101 times [2018-10-01 00:40:22,288 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:22,288 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:22,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:22,289 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:22,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:22,889 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:22,889 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:22,889 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:22,897 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:40:23,002 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2018-10-01 00:40:23,002 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:23,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:23,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:23,213 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:23,213 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-01 00:40:23,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-01 00:40:23,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-01 00:40:23,215 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:23,215 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 104 states. [2018-10-01 00:40:24,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:24,074 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-10-01 00:40:24,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-01 00:40:24,074 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 104 [2018-10-01 00:40:24,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:24,075 INFO L225 Difference]: With dead ends: 108 [2018-10-01 00:40:24,075 INFO L226 Difference]: Without dead ends: 106 [2018-10-01 00:40:24,076 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:40:24,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-01 00:40:24,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-01 00:40:24,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-01 00:40:24,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-01 00:40:24,078 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-10-01 00:40:24,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:24,079 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-01 00:40:24,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-01 00:40:24,079 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-01 00:40:24,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-01 00:40:24,079 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:24,079 INFO L375 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-10-01 00:40:24,080 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:24,080 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:24,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1129885153, now seen corresponding path program 102 times [2018-10-01 00:40:24,080 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:24,080 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:24,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:24,081 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:24,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:24,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:24,907 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:24,907 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:24,915 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:40:25,004 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2018-10-01 00:40:25,004 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:25,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:25,220 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:25,240 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:25,240 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-01 00:40:25,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-01 00:40:25,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-01 00:40:25,242 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:25,242 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2018-10-01 00:40:26,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:26,067 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-01 00:40:26,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-01 00:40:26,068 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2018-10-01 00:40:26,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:26,068 INFO L225 Difference]: With dead ends: 109 [2018-10-01 00:40:26,069 INFO L226 Difference]: Without dead ends: 107 [2018-10-01 00:40:26,069 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:40:26,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-01 00:40:26,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-01 00:40:26,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-01 00:40:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-01 00:40:26,072 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-10-01 00:40:26,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:26,072 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-01 00:40:26,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-01 00:40:26,072 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-01 00:40:26,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-01 00:40:26,072 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:26,073 INFO L375 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-10-01 00:40:26,073 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:26,073 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:26,073 INFO L82 PathProgramCache]: Analyzing trace with hash 666699400, now seen corresponding path program 103 times [2018-10-01 00:40:26,073 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:26,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:26,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:26,074 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:26,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:26,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:26,659 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:26,659 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:26,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:26,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:26,945 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:26,965 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:26,965 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-01 00:40:26,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-01 00:40:26,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-01 00:40:26,967 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:26,967 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 106 states. [2018-10-01 00:40:27,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:27,459 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-10-01 00:40:27,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-01 00:40:27,460 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 106 [2018-10-01 00:40:27,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:27,460 INFO L225 Difference]: With dead ends: 110 [2018-10-01 00:40:27,460 INFO L226 Difference]: Without dead ends: 108 [2018-10-01 00:40:27,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:40:27,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-01 00:40:27,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-10-01 00:40:27,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-10-01 00:40:27,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-10-01 00:40:27,463 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-10-01 00:40:27,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:27,463 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-10-01 00:40:27,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-01 00:40:27,463 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-10-01 00:40:27,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-01 00:40:27,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:27,464 INFO L375 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-10-01 00:40:27,464 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:27,464 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:27,464 INFO L82 PathProgramCache]: Analyzing trace with hash -807157055, now seen corresponding path program 104 times [2018-10-01 00:40:27,464 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:27,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:27,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:27,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:27,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:28,045 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:28,045 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:28,053 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:40:28,107 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:40:28,107 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:28,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:28,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:28,421 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:28,422 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-01 00:40:28,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-01 00:40:28,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-01 00:40:28,423 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:28,423 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 107 states. [2018-10-01 00:40:29,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:29,016 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-01 00:40:29,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-01 00:40:29,016 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 107 [2018-10-01 00:40:29,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:29,017 INFO L225 Difference]: With dead ends: 111 [2018-10-01 00:40:29,017 INFO L226 Difference]: Without dead ends: 109 [2018-10-01 00:40:29,017 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:40:29,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-01 00:40:29,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-01 00:40:29,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-01 00:40:29,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-01 00:40:29,019 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-10-01 00:40:29,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:29,019 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-01 00:40:29,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-01 00:40:29,020 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-01 00:40:29,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-01 00:40:29,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:29,020 INFO L375 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-10-01 00:40:29,020 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:29,020 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:29,020 INFO L82 PathProgramCache]: Analyzing trace with hash 747933096, now seen corresponding path program 105 times [2018-10-01 00:40:29,021 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:29,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:29,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:29,021 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:29,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:29,601 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:29,602 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:29,602 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:29,610 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:40:29,711 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-10-01 00:40:29,712 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:29,715 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:30,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:30,139 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:30,139 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-01 00:40:30,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-01 00:40:30,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-01 00:40:30,140 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:30,140 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 108 states. [2018-10-01 00:40:31,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:31,009 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-10-01 00:40:31,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-01 00:40:31,009 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 108 [2018-10-01 00:40:31,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:31,009 INFO L225 Difference]: With dead ends: 112 [2018-10-01 00:40:31,010 INFO L226 Difference]: Without dead ends: 110 [2018-10-01 00:40:31,010 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:40:31,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-01 00:40:31,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-10-01 00:40:31,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-01 00:40:31,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-10-01 00:40:31,012 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-10-01 00:40:31,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:31,013 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-10-01 00:40:31,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-01 00:40:31,013 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-10-01 00:40:31,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-01 00:40:31,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:31,013 INFO L375 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-10-01 00:40:31,014 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:31,014 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:31,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1711087521, now seen corresponding path program 106 times [2018-10-01 00:40:31,014 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:31,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:31,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:31,015 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:31,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:31,591 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:31,591 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:31,591 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:31,598 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:40:31,654 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:40:31,654 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:31,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:31,853 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:31,874 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:31,874 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-01 00:40:31,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-01 00:40:31,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-01 00:40:31,875 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:31,875 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 109 states. [2018-10-01 00:40:32,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:32,698 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-01 00:40:32,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-01 00:40:32,699 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 109 [2018-10-01 00:40:32,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:32,699 INFO L225 Difference]: With dead ends: 113 [2018-10-01 00:40:32,699 INFO L226 Difference]: Without dead ends: 111 [2018-10-01 00:40:32,699 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:40:32,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-01 00:40:32,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-01 00:40:32,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-01 00:40:32,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-01 00:40:32,702 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-10-01 00:40:32,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:32,702 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-01 00:40:32,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-01 00:40:32,702 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-01 00:40:32,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-01 00:40:32,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:32,702 INFO L375 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-10-01 00:40:32,703 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:32,703 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:32,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1504103624, now seen corresponding path program 107 times [2018-10-01 00:40:32,703 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:32,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:32,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:32,704 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:32,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:33,296 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:33,296 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:33,296 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:33,303 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:40:33,411 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-01 00:40:33,411 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:33,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:33,616 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:33,636 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:33,637 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-01 00:40:33,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-01 00:40:33,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-01 00:40:33,638 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:33,638 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 110 states. [2018-10-01 00:40:34,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:34,535 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-10-01 00:40:34,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-01 00:40:34,536 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 110 [2018-10-01 00:40:34,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:34,536 INFO L225 Difference]: With dead ends: 114 [2018-10-01 00:40:34,536 INFO L226 Difference]: Without dead ends: 112 [2018-10-01 00:40:34,536 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:40:34,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-10-01 00:40:34,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-10-01 00:40:34,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-01 00:40:34,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-10-01 00:40:34,538 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2018-10-01 00:40:34,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:34,538 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-10-01 00:40:34,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-01 00:40:34,539 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-10-01 00:40:34,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-01 00:40:34,539 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:34,539 INFO L375 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2018-10-01 00:40:34,539 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:34,539 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:34,540 INFO L82 PathProgramCache]: Analyzing trace with hash -617429887, now seen corresponding path program 108 times [2018-10-01 00:40:34,540 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:34,540 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:34,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:34,541 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:34,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:35,394 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:35,394 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:35,394 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:35,401 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:40:35,531 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-01 00:40:35,531 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:35,534 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:35,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:35,750 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:35,751 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-01 00:40:35,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-01 00:40:35,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-01 00:40:35,752 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:35,753 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 111 states. [2018-10-01 00:40:36,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:36,379 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-01 00:40:36,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-01 00:40:36,379 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 111 [2018-10-01 00:40:36,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:36,380 INFO L225 Difference]: With dead ends: 115 [2018-10-01 00:40:36,380 INFO L226 Difference]: Without dead ends: 113 [2018-10-01 00:40:36,380 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:40:36,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-01 00:40:36,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-01 00:40:36,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-01 00:40:36,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-10-01 00:40:36,382 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 111 [2018-10-01 00:40:36,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:36,382 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-10-01 00:40:36,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-01 00:40:36,382 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-10-01 00:40:36,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-01 00:40:36,382 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:36,383 INFO L375 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2018-10-01 00:40:36,383 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:36,383 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:36,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1960459288, now seen corresponding path program 109 times [2018-10-01 00:40:36,383 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:36,383 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:36,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:36,384 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:36,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:37,021 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:37,021 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:37,021 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:37,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:37,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:37,290 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:37,309 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:37,310 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-01 00:40:37,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-01 00:40:37,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-01 00:40:37,311 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:37,311 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 112 states. [2018-10-01 00:40:38,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:38,230 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2018-10-01 00:40:38,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-01 00:40:38,231 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 112 [2018-10-01 00:40:38,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:38,232 INFO L225 Difference]: With dead ends: 116 [2018-10-01 00:40:38,232 INFO L226 Difference]: Without dead ends: 114 [2018-10-01 00:40:38,232 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:40:38,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-10-01 00:40:38,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-10-01 00:40:38,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-10-01 00:40:38,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-10-01 00:40:38,235 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 112 [2018-10-01 00:40:38,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:38,235 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-10-01 00:40:38,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-01 00:40:38,235 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-10-01 00:40:38,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-01 00:40:38,236 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:38,236 INFO L375 BasicCegarLoop]: trace histogram [110, 1, 1, 1] [2018-10-01 00:40:38,236 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:38,236 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:38,236 INFO L82 PathProgramCache]: Analyzing trace with hash -644697759, now seen corresponding path program 110 times [2018-10-01 00:40:38,237 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:38,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:38,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:38,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:38,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:38,880 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:38,880 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:38,889 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:40:38,947 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:40:38,948 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:38,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:39,154 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:39,175 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:39,176 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-10-01 00:40:39,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-01 00:40:39,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-01 00:40:39,178 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:39,178 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 113 states. [2018-10-01 00:40:40,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:40,352 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-01 00:40:40,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-01 00:40:40,352 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 113 [2018-10-01 00:40:40,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:40,353 INFO L225 Difference]: With dead ends: 117 [2018-10-01 00:40:40,353 INFO L226 Difference]: Without dead ends: 115 [2018-10-01 00:40:40,353 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:40:40,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-01 00:40:40,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-01 00:40:40,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-01 00:40:40,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-01 00:40:40,356 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 113 [2018-10-01 00:40:40,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:40,356 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-01 00:40:40,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-01 00:40:40,356 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-01 00:40:40,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-01 00:40:40,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:40,357 INFO L375 BasicCegarLoop]: trace histogram [111, 1, 1, 1] [2018-10-01 00:40:40,357 INFO L423 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:40,357 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:40,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1489203976, now seen corresponding path program 111 times [2018-10-01 00:40:40,358 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:40,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:40,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:40,358 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:40,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:41,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:41,074 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:41,074 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:41,081 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:40:41,227 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2018-10-01 00:40:41,227 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:41,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:41,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:41,449 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:41,449 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-10-01 00:40:41,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-01 00:40:41,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-01 00:40:41,451 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:41,451 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 114 states. [2018-10-01 00:40:42,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:42,330 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-10-01 00:40:42,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-01 00:40:42,330 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 114 [2018-10-01 00:40:42,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:42,330 INFO L225 Difference]: With dead ends: 118 [2018-10-01 00:40:42,331 INFO L226 Difference]: Without dead ends: 116 [2018-10-01 00:40:42,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:40:42,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-10-01 00:40:42,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-10-01 00:40:42,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-10-01 00:40:42,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-10-01 00:40:42,333 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 114 [2018-10-01 00:40:42,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:42,333 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-10-01 00:40:42,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-01 00:40:42,333 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-10-01 00:40:42,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-01 00:40:42,333 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:42,333 INFO L375 BasicCegarLoop]: trace histogram [112, 1, 1, 1] [2018-10-01 00:40:42,334 INFO L423 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:42,334 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:42,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1079318975, now seen corresponding path program 112 times [2018-10-01 00:40:42,334 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:42,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:42,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:42,335 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:42,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:43,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:43,047 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:43,047 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:43,057 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:40:43,116 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:40:43,116 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:43,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:43,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:43,418 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:43,418 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-10-01 00:40:43,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-10-01 00:40:43,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-10-01 00:40:43,419 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:43,419 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 115 states. [2018-10-01 00:40:44,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:44,184 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-10-01 00:40:44,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-10-01 00:40:44,185 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 115 [2018-10-01 00:40:44,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:44,185 INFO L225 Difference]: With dead ends: 119 [2018-10-01 00:40:44,185 INFO L226 Difference]: Without dead ends: 117 [2018-10-01 00:40:44,185 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:40:44,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-01 00:40:44,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-01 00:40:44,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-01 00:40:44,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-10-01 00:40:44,187 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 115 [2018-10-01 00:40:44,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:44,188 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-10-01 00:40:44,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-10-01 00:40:44,188 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-10-01 00:40:44,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-01 00:40:44,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:44,188 INFO L375 BasicCegarLoop]: trace histogram [113, 1, 1, 1] [2018-10-01 00:40:44,188 INFO L423 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:44,189 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:44,189 INFO L82 PathProgramCache]: Analyzing trace with hash 900848168, now seen corresponding path program 113 times [2018-10-01 00:40:44,189 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:44,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:44,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:44,189 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:44,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:44,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:44,979 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:44,979 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:44,986 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:40:45,104 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2018-10-01 00:40:45,104 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:45,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:45,466 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:45,487 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:45,487 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-10-01 00:40:45,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-01 00:40:45,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-01 00:40:45,489 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:45,489 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 116 states. [2018-10-01 00:40:46,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:46,144 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-10-01 00:40:46,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-01 00:40:46,144 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 116 [2018-10-01 00:40:46,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:46,145 INFO L225 Difference]: With dead ends: 120 [2018-10-01 00:40:46,145 INFO L226 Difference]: Without dead ends: 118 [2018-10-01 00:40:46,145 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:40:46,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-01 00:40:46,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-10-01 00:40:46,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-10-01 00:40:46,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-10-01 00:40:46,147 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 116 [2018-10-01 00:40:46,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:46,147 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-10-01 00:40:46,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-01 00:40:46,147 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-10-01 00:40:46,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-01 00:40:46,148 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:46,148 INFO L375 BasicCegarLoop]: trace histogram [114, 1, 1, 1] [2018-10-01 00:40:46,148 INFO L423 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:46,148 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:46,148 INFO L82 PathProgramCache]: Analyzing trace with hash -2138479839, now seen corresponding path program 114 times [2018-10-01 00:40:46,148 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:46,148 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:46,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:46,149 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:46,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:46,792 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:46,792 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:46,792 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:46,799 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:40:46,911 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2018-10-01 00:40:46,911 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:46,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:47,135 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:47,156 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:47,156 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2018-10-01 00:40:47,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-10-01 00:40:47,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-10-01 00:40:47,158 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:47,158 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 117 states. [2018-10-01 00:40:47,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:47,976 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-01 00:40:47,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-10-01 00:40:47,976 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 117 [2018-10-01 00:40:47,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:47,977 INFO L225 Difference]: With dead ends: 121 [2018-10-01 00:40:47,977 INFO L226 Difference]: Without dead ends: 119 [2018-10-01 00:40:47,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:40:47,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-01 00:40:47,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-01 00:40:47,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-01 00:40:47,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-01 00:40:47,981 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 117 [2018-10-01 00:40:47,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:47,981 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-01 00:40:47,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-10-01 00:40:47,981 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-01 00:40:47,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-01 00:40:47,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:47,982 INFO L375 BasicCegarLoop]: trace histogram [115, 1, 1, 1] [2018-10-01 00:40:47,982 INFO L423 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:47,982 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:47,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1868367544, now seen corresponding path program 115 times [2018-10-01 00:40:47,982 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:47,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:47,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:47,983 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:47,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:48,656 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:48,656 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:48,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:48,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:48,959 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:48,959 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2018-10-01 00:40:48,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-10-01 00:40:48,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-10-01 00:40:48,961 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:48,961 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 118 states. [2018-10-01 00:40:49,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:49,805 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2018-10-01 00:40:49,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-10-01 00:40:49,805 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 118 [2018-10-01 00:40:49,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:49,806 INFO L225 Difference]: With dead ends: 122 [2018-10-01 00:40:49,806 INFO L226 Difference]: Without dead ends: 120 [2018-10-01 00:40:49,806 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:40:49,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-10-01 00:40:49,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-10-01 00:40:49,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-10-01 00:40:49,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-10-01 00:40:49,810 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 118 [2018-10-01 00:40:49,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:49,810 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-10-01 00:40:49,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-10-01 00:40:49,810 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-10-01 00:40:49,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-01 00:40:49,810 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:49,811 INFO L375 BasicCegarLoop]: trace histogram [116, 1, 1, 1] [2018-10-01 00:40:49,811 INFO L423 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:49,811 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:49,811 INFO L82 PathProgramCache]: Analyzing trace with hash -2084820991, now seen corresponding path program 116 times [2018-10-01 00:40:49,811 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:49,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:49,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:49,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:49,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:50,676 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:50,676 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:50,676 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:50,683 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:40:50,743 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:40:50,744 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:50,747 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:50,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:50,989 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:50,989 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2018-10-01 00:40:50,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-10-01 00:40:50,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-10-01 00:40:50,991 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:50,991 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 119 states. [2018-10-01 00:40:51,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:51,617 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-10-01 00:40:51,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-10-01 00:40:51,618 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 119 [2018-10-01 00:40:51,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:51,618 INFO L225 Difference]: With dead ends: 123 [2018-10-01 00:40:51,618 INFO L226 Difference]: Without dead ends: 121 [2018-10-01 00:40:51,618 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:40:51,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-01 00:40:51,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-01 00:40:51,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-01 00:40:51,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-10-01 00:40:51,620 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 119 [2018-10-01 00:40:51,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:51,620 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-10-01 00:40:51,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-10-01 00:40:51,621 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-10-01 00:40:51,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-01 00:40:51,621 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:51,621 INFO L375 BasicCegarLoop]: trace histogram [117, 1, 1, 1] [2018-10-01 00:40:51,621 INFO L423 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:51,621 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:51,621 INFO L82 PathProgramCache]: Analyzing trace with hash -204943256, now seen corresponding path program 117 times [2018-10-01 00:40:51,621 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:51,622 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:51,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:51,622 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:51,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:52,302 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:52,302 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:52,309 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:40:52,418 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2018-10-01 00:40:52,419 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:52,422 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:52,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:52,667 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:52,667 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2018-10-01 00:40:52,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-10-01 00:40:52,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-10-01 00:40:52,669 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:52,669 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 120 states. [2018-10-01 00:40:53,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:53,463 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-10-01 00:40:53,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-10-01 00:40:53,463 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 120 [2018-10-01 00:40:53,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:53,464 INFO L225 Difference]: With dead ends: 124 [2018-10-01 00:40:53,464 INFO L226 Difference]: Without dead ends: 122 [2018-10-01 00:40:53,464 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:40:53,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-10-01 00:40:53,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-10-01 00:40:53,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-10-01 00:40:53,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-10-01 00:40:53,467 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 120 [2018-10-01 00:40:53,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:53,467 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-10-01 00:40:53,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-10-01 00:40:53,467 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-10-01 00:40:53,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-01 00:40:53,467 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:53,467 INFO L375 BasicCegarLoop]: trace histogram [118, 1, 1, 1] [2018-10-01 00:40:53,468 INFO L423 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:53,468 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:53,468 INFO L82 PathProgramCache]: Analyzing trace with hash -2058275615, now seen corresponding path program 118 times [2018-10-01 00:40:53,468 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:53,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:53,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:53,469 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:53,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:54,139 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:54,139 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:54,139 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:54,147 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:40:54,210 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:40:54,210 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:54,213 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:54,439 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:54,459 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:54,459 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 120 [2018-10-01 00:40:54,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-10-01 00:40:54,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-10-01 00:40:54,461 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:54,461 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 121 states. [2018-10-01 00:40:55,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:55,364 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-01 00:40:55,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-10-01 00:40:55,364 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 121 [2018-10-01 00:40:55,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:55,365 INFO L225 Difference]: With dead ends: 125 [2018-10-01 00:40:55,365 INFO L226 Difference]: Without dead ends: 123 [2018-10-01 00:40:55,365 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:40:55,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-01 00:40:55,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-01 00:40:55,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-01 00:40:55,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-10-01 00:40:55,367 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 121 [2018-10-01 00:40:55,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:55,367 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-10-01 00:40:55,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-10-01 00:40:55,368 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-10-01 00:40:55,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-01 00:40:55,368 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:55,368 INFO L375 BasicCegarLoop]: trace histogram [119, 1, 1, 1] [2018-10-01 00:40:55,368 INFO L423 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:55,368 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:55,369 INFO L82 PathProgramCache]: Analyzing trace with hash 617963400, now seen corresponding path program 119 times [2018-10-01 00:40:55,369 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:55,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:55,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:55,369 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:55,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:56,241 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:56,241 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:56,241 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:56,249 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:40:56,375 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2018-10-01 00:40:56,376 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:56,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:56,610 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:56,630 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:56,631 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 121 [2018-10-01 00:40:56,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-10-01 00:40:56,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-10-01 00:40:56,632 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:56,632 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 122 states. [2018-10-01 00:40:57,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:57,232 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2018-10-01 00:40:57,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-10-01 00:40:57,232 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 122 [2018-10-01 00:40:57,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:57,233 INFO L225 Difference]: With dead ends: 126 [2018-10-01 00:40:57,233 INFO L226 Difference]: Without dead ends: 124 [2018-10-01 00:40:57,233 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:40:57,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-10-01 00:40:57,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-10-01 00:40:57,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-10-01 00:40:57,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-10-01 00:40:57,236 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 122 [2018-10-01 00:40:57,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:57,236 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-10-01 00:40:57,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-10-01 00:40:57,236 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-10-01 00:40:57,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-01 00:40:57,237 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:57,237 INFO L375 BasicCegarLoop]: trace histogram [120, 1, 1, 1] [2018-10-01 00:40:57,237 INFO L423 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:57,237 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:57,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1976994241, now seen corresponding path program 120 times [2018-10-01 00:40:57,237 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:57,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:57,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:57,238 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:57,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:57,942 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:57,943 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:57,943 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:57,950 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:40:58,063 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-01 00:40:58,063 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:58,067 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:58,306 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:58,327 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:58,328 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 122 [2018-10-01 00:40:58,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-10-01 00:40:58,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-10-01 00:40:58,329 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:58,329 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 123 states. [2018-10-01 00:40:59,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:59,216 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-10-01 00:40:59,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-10-01 00:40:59,216 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 123 [2018-10-01 00:40:59,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:59,217 INFO L225 Difference]: With dead ends: 127 [2018-10-01 00:40:59,217 INFO L226 Difference]: Without dead ends: 125 [2018-10-01 00:40:59,217 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:40:59,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-10-01 00:40:59,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-10-01 00:40:59,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-01 00:40:59,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-10-01 00:40:59,220 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 123 [2018-10-01 00:40:59,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:59,220 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-10-01 00:40:59,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-10-01 00:40:59,220 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-10-01 00:40:59,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-01 00:40:59,221 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:59,221 INFO L375 BasicCegarLoop]: trace histogram [121, 1, 1, 1] [2018-10-01 00:40:59,221 INFO L423 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:59,221 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:59,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1157277352, now seen corresponding path program 121 times [2018-10-01 00:40:59,221 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:59,221 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:59,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:59,222 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:59,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:59,920 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:59,920 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:59,920 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:59,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:59,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:00,220 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:00,242 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:00,242 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 123 [2018-10-01 00:41:00,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-10-01 00:41:00,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-10-01 00:41:00,244 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:00,244 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 124 states. [2018-10-01 00:41:01,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:01,244 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2018-10-01 00:41:01,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-10-01 00:41:01,244 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 124 [2018-10-01 00:41:01,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:01,245 INFO L225 Difference]: With dead ends: 128 [2018-10-01 00:41:01,245 INFO L226 Difference]: Without dead ends: 126 [2018-10-01 00:41:01,245 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:41:01,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-10-01 00:41:01,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-10-01 00:41:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-10-01 00:41:01,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-10-01 00:41:01,247 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 124 [2018-10-01 00:41:01,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:01,247 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-10-01 00:41:01,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-10-01 00:41:01,247 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-10-01 00:41:01,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-01 00:41:01,248 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:01,248 INFO L375 BasicCegarLoop]: trace histogram [122, 1, 1, 1] [2018-10-01 00:41:01,248 INFO L423 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:01,248 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:01,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1515857569, now seen corresponding path program 122 times [2018-10-01 00:41:01,248 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:01,248 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:01,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:01,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:01,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:01,972 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:01,972 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:01,978 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:41:02,041 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:41:02,041 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:02,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:02,397 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:02,417 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:02,417 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 124 [2018-10-01 00:41:02,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-10-01 00:41:02,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-10-01 00:41:02,419 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:02,419 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 125 states. [2018-10-01 00:41:03,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:03,377 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-01 00:41:03,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-10-01 00:41:03,378 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 125 [2018-10-01 00:41:03,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:03,378 INFO L225 Difference]: With dead ends: 129 [2018-10-01 00:41:03,378 INFO L226 Difference]: Without dead ends: 127 [2018-10-01 00:41:03,378 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:41:03,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-01 00:41:03,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-01 00:41:03,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-01 00:41:03,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-01 00:41:03,380 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 125 [2018-10-01 00:41:03,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:03,381 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-01 00:41:03,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-10-01 00:41:03,381 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-01 00:41:03,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-01 00:41:03,381 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:03,381 INFO L375 BasicCegarLoop]: trace histogram [123, 1, 1, 1] [2018-10-01 00:41:03,381 INFO L423 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:03,381 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:03,382 INFO L82 PathProgramCache]: Analyzing trace with hash -253057592, now seen corresponding path program 123 times [2018-10-01 00:41:03,382 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:03,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:03,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:03,382 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:03,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:04,098 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:04,098 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:04,098 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:04,105 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:41:04,223 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2018-10-01 00:41:04,224 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:04,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:04,455 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:04,475 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:04,476 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 125 [2018-10-01 00:41:04,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-10-01 00:41:04,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-10-01 00:41:04,477 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:04,477 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 126 states. [2018-10-01 00:41:05,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:05,406 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-10-01 00:41:05,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-10-01 00:41:05,407 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 126 [2018-10-01 00:41:05,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:05,407 INFO L225 Difference]: With dead ends: 130 [2018-10-01 00:41:05,407 INFO L226 Difference]: Without dead ends: 128 [2018-10-01 00:41:05,407 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:41:05,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-10-01 00:41:05,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-10-01 00:41:05,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-10-01 00:41:05,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-10-01 00:41:05,409 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 126 [2018-10-01 00:41:05,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:05,410 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-10-01 00:41:05,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-10-01 00:41:05,410 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-10-01 00:41:05,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-01 00:41:05,410 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:05,410 INFO L375 BasicCegarLoop]: trace histogram [124, 1, 1, 1] [2018-10-01 00:41:05,410 INFO L423 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:05,411 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:05,411 INFO L82 PathProgramCache]: Analyzing trace with hash 745147265, now seen corresponding path program 124 times [2018-10-01 00:41:05,411 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:05,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:05,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:05,412 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:05,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:06,382 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:06,382 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:06,382 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:06,390 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:41:06,453 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:41:06,453 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:06,456 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:06,694 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:06,714 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:06,714 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 126 [2018-10-01 00:41:06,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-10-01 00:41:06,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-10-01 00:41:06,716 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:06,716 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 127 states. [2018-10-01 00:41:07,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:07,686 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-01 00:41:07,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-10-01 00:41:07,686 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 127 [2018-10-01 00:41:07,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:07,687 INFO L225 Difference]: With dead ends: 131 [2018-10-01 00:41:07,687 INFO L226 Difference]: Without dead ends: 129 [2018-10-01 00:41:07,687 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:41:07,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-01 00:41:07,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-10-01 00:41:07,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-01 00:41:07,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-10-01 00:41:07,689 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 127 [2018-10-01 00:41:07,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:07,689 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-10-01 00:41:07,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-10-01 00:41:07,689 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-10-01 00:41:07,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-01 00:41:07,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:07,690 INFO L375 BasicCegarLoop]: trace histogram [125, 1, 1, 1] [2018-10-01 00:41:07,690 INFO L423 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:07,690 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:07,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1624726760, now seen corresponding path program 125 times [2018-10-01 00:41:07,690 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:07,690 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:07,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:07,691 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:07,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:08,416 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:08,416 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:08,416 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:08,427 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:41:08,566 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2018-10-01 00:41:08,566 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:08,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:08,825 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:08,825 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 127 [2018-10-01 00:41:08,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-10-01 00:41:08,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-10-01 00:41:08,827 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:08,827 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 128 states. [2018-10-01 00:41:09,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:09,667 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2018-10-01 00:41:09,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-10-01 00:41:09,667 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 128 [2018-10-01 00:41:09,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:09,667 INFO L225 Difference]: With dead ends: 132 [2018-10-01 00:41:09,668 INFO L226 Difference]: Without dead ends: 130 [2018-10-01 00:41:09,668 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:41:09,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-10-01 00:41:09,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-10-01 00:41:09,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-10-01 00:41:09,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-10-01 00:41:09,670 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 128 [2018-10-01 00:41:09,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:09,671 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-10-01 00:41:09,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-10-01 00:41:09,671 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-10-01 00:41:09,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-01 00:41:09,671 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:09,671 INFO L375 BasicCegarLoop]: trace histogram [126, 1, 1, 1] [2018-10-01 00:41:09,671 INFO L423 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:09,671 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:09,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1173079967, now seen corresponding path program 126 times [2018-10-01 00:41:09,672 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:09,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:09,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:09,672 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:09,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:10,397 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:10,397 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:10,404 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:41:10,531 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2018-10-01 00:41:10,531 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:10,538 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:10,922 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:10,922 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 128 [2018-10-01 00:41:10,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-10-01 00:41:10,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-10-01 00:41:10,925 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:10,925 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 129 states. [2018-10-01 00:41:11,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:11,897 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-01 00:41:11,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-10-01 00:41:11,898 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 129 [2018-10-01 00:41:11,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:11,898 INFO L225 Difference]: With dead ends: 133 [2018-10-01 00:41:11,898 INFO L226 Difference]: Without dead ends: 131 [2018-10-01 00:41:11,899 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:41:11,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-01 00:41:11,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-01 00:41:11,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-01 00:41:11,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-10-01 00:41:11,902 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 129 [2018-10-01 00:41:11,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:11,902 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-10-01 00:41:11,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-10-01 00:41:11,902 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-10-01 00:41:11,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-01 00:41:11,902 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:11,903 INFO L375 BasicCegarLoop]: trace histogram [127, 1, 1, 1] [2018-10-01 00:41:11,903 INFO L423 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:11,903 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:11,903 INFO L82 PathProgramCache]: Analyzing trace with hash -2005742584, now seen corresponding path program 127 times [2018-10-01 00:41:11,903 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:11,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:11,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:11,904 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:11,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:12,637 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:12,637 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:12,638 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:12,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:12,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:12,977 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:12,977 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 129 [2018-10-01 00:41:12,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-10-01 00:41:12,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-10-01 00:41:12,979 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:12,980 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 130 states. [2018-10-01 00:41:14,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:14,016 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2018-10-01 00:41:14,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-10-01 00:41:14,016 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 130 [2018-10-01 00:41:14,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:14,017 INFO L225 Difference]: With dead ends: 134 [2018-10-01 00:41:14,017 INFO L226 Difference]: Without dead ends: 132 [2018-10-01 00:41:14,017 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:41:14,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-10-01 00:41:14,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-10-01 00:41:14,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-10-01 00:41:14,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-10-01 00:41:14,020 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 130 [2018-10-01 00:41:14,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:14,021 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-10-01 00:41:14,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-10-01 00:41:14,021 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-10-01 00:41:14,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-01 00:41:14,021 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:14,021 INFO L375 BasicCegarLoop]: trace histogram [128, 1, 1, 1] [2018-10-01 00:41:14,022 INFO L423 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:14,022 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:14,022 INFO L82 PathProgramCache]: Analyzing trace with hash -2048479935, now seen corresponding path program 128 times [2018-10-01 00:41:14,022 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:14,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:14,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:14,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:14,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:14,828 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:14,828 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:14,828 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:14,838 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:41:14,900 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:41:14,901 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:14,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:15,166 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:15,166 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130] total 130 [2018-10-01 00:41:15,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-10-01 00:41:15,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-10-01 00:41:15,168 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:15,168 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 131 states. [2018-10-01 00:41:16,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:16,318 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-10-01 00:41:16,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-10-01 00:41:16,318 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 131 [2018-10-01 00:41:16,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:16,319 INFO L225 Difference]: With dead ends: 135 [2018-10-01 00:41:16,319 INFO L226 Difference]: Without dead ends: 133 [2018-10-01 00:41:16,319 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:41:16,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-01 00:41:16,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-01 00:41:16,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-01 00:41:16,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-01 00:41:16,323 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 131 [2018-10-01 00:41:16,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:16,323 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-01 00:41:16,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-10-01 00:41:16,323 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-01 00:41:16,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-01 00:41:16,324 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:16,324 INFO L375 BasicCegarLoop]: trace histogram [129, 1, 1, 1] [2018-10-01 00:41:16,324 INFO L423 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:16,324 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:16,324 INFO L82 PathProgramCache]: Analyzing trace with hash 921629480, now seen corresponding path program 129 times [2018-10-01 00:41:16,324 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:16,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:16,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:16,325 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:16,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:17,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:17,191 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:17,191 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:17,201 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:41:17,332 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2018-10-01 00:41:17,332 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:17,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:17,577 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:17,598 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:17,598 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131] total 131 [2018-10-01 00:41:17,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-10-01 00:41:17,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-10-01 00:41:17,599 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:17,599 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 132 states. [2018-10-01 00:41:18,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:18,683 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2018-10-01 00:41:18,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-10-01 00:41:18,684 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 132 [2018-10-01 00:41:18,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:18,684 INFO L225 Difference]: With dead ends: 136 [2018-10-01 00:41:18,684 INFO L226 Difference]: Without dead ends: 134 [2018-10-01 00:41:18,685 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:41:18,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-10-01 00:41:18,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-10-01 00:41:18,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-10-01 00:41:18,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-10-01 00:41:18,689 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 132 [2018-10-01 00:41:18,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:18,689 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-10-01 00:41:18,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-10-01 00:41:18,689 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-10-01 00:41:18,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-01 00:41:18,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:18,690 INFO L375 BasicCegarLoop]: trace histogram [130, 1, 1, 1] [2018-10-01 00:41:18,690 INFO L423 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:18,690 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:18,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1494259167, now seen corresponding path program 130 times [2018-10-01 00:41:18,690 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:18,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:18,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:18,691 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:18,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:19,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:19,490 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:19,490 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:19,497 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:41:19,568 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:41:19,568 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:19,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:19,872 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:19,892 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:19,892 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 132] total 132 [2018-10-01 00:41:19,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-10-01 00:41:19,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-10-01 00:41:19,894 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:19,894 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 133 states. [2018-10-01 00:41:20,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:20,916 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-10-01 00:41:20,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-10-01 00:41:20,916 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 133 [2018-10-01 00:41:20,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:20,917 INFO L225 Difference]: With dead ends: 137 [2018-10-01 00:41:20,917 INFO L226 Difference]: Without dead ends: 135 [2018-10-01 00:41:20,917 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:41:20,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-01 00:41:20,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-01 00:41:20,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-01 00:41:20,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-01 00:41:20,919 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 133 [2018-10-01 00:41:20,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:20,919 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-01 00:41:20,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-10-01 00:41:20,920 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-01 00:41:20,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-01 00:41:20,920 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:20,920 INFO L375 BasicCegarLoop]: trace histogram [131, 1, 1, 1] [2018-10-01 00:41:20,920 INFO L423 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:20,920 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:20,920 INFO L82 PathProgramCache]: Analyzing trace with hash 922604104, now seen corresponding path program 131 times [2018-10-01 00:41:20,920 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:20,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:20,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:20,921 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:20,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:21,857 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:21,857 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:21,857 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:21,863 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:41:22,025 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2018-10-01 00:41:22,026 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:22,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:22,269 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:22,289 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:22,289 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 133 [2018-10-01 00:41:22,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-10-01 00:41:22,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-10-01 00:41:22,291 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:22,291 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 134 states. [2018-10-01 00:41:23,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:23,303 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2018-10-01 00:41:23,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-10-01 00:41:23,303 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 134 [2018-10-01 00:41:23,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:23,304 INFO L225 Difference]: With dead ends: 138 [2018-10-01 00:41:23,304 INFO L226 Difference]: Without dead ends: 136 [2018-10-01 00:41:23,304 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:41:23,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-10-01 00:41:23,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-10-01 00:41:23,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-10-01 00:41:23,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-10-01 00:41:23,306 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 134 [2018-10-01 00:41:23,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:23,306 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-10-01 00:41:23,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-10-01 00:41:23,306 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-10-01 00:41:23,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-01 00:41:23,307 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:23,307 INFO L375 BasicCegarLoop]: trace histogram [132, 1, 1, 1] [2018-10-01 00:41:23,307 INFO L423 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:23,307 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:23,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1464045823, now seen corresponding path program 132 times [2018-10-01 00:41:23,307 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:23,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:23,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:23,308 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:23,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:24,090 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 0 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:24,090 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:24,090 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:24,098 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:41:24,232 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-01 00:41:24,233 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:24,237 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:24,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 0 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:24,498 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:24,498 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 134] total 134 [2018-10-01 00:41:24,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-10-01 00:41:24,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-10-01 00:41:24,500 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:24,500 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 135 states. [2018-10-01 00:41:25,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:25,230 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-10-01 00:41:25,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-10-01 00:41:25,230 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 135 [2018-10-01 00:41:25,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:25,230 INFO L225 Difference]: With dead ends: 139 [2018-10-01 00:41:25,230 INFO L226 Difference]: Without dead ends: 137 [2018-10-01 00:41:25,231 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:41:25,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-01 00:41:25,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-10-01 00:41:25,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-01 00:41:25,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-10-01 00:41:25,233 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 135 [2018-10-01 00:41:25,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:25,233 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-10-01 00:41:25,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-10-01 00:41:25,233 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-10-01 00:41:25,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-01 00:41:25,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:25,233 INFO L375 BasicCegarLoop]: trace histogram [133, 1, 1, 1] [2018-10-01 00:41:25,233 INFO L423 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:25,234 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:25,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1859217768, now seen corresponding path program 133 times [2018-10-01 00:41:25,234 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:25,234 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:25,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:25,234 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:25,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:26,056 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:26,056 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:26,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:26,139 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:26,497 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:26,517 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:26,517 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 135] total 135 [2018-10-01 00:41:26,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-10-01 00:41:26,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-10-01 00:41:26,519 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:26,519 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 136 states. [2018-10-01 00:41:27,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:27,765 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2018-10-01 00:41:27,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-10-01 00:41:27,765 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 136 [2018-10-01 00:41:27,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:27,766 INFO L225 Difference]: With dead ends: 140 [2018-10-01 00:41:27,766 INFO L226 Difference]: Without dead ends: 138 [2018-10-01 00:41:27,766 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:41:27,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-10-01 00:41:27,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-10-01 00:41:27,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-10-01 00:41:27,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-10-01 00:41:27,768 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 136 [2018-10-01 00:41:27,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:27,768 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-10-01 00:41:27,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-10-01 00:41:27,769 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-10-01 00:41:27,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-01 00:41:27,769 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:27,769 INFO L375 BasicCegarLoop]: trace histogram [134, 1, 1, 1] [2018-10-01 00:41:27,769 INFO L423 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:27,769 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:27,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1801173985, now seen corresponding path program 134 times [2018-10-01 00:41:27,769 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:27,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:27,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:27,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:27,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:28,559 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:28,560 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:28,566 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:41:28,637 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:41:28,637 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:28,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:28,894 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:28,914 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:28,914 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 136] total 136 [2018-10-01 00:41:28,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-10-01 00:41:28,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-10-01 00:41:28,916 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:28,916 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 137 states. [2018-10-01 00:41:30,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:30,038 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-01 00:41:30,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-10-01 00:41:30,039 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 137 [2018-10-01 00:41:30,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:30,039 INFO L225 Difference]: With dead ends: 141 [2018-10-01 00:41:30,039 INFO L226 Difference]: Without dead ends: 139 [2018-10-01 00:41:30,039 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:41:30,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-01 00:41:30,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-01 00:41:30,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-01 00:41:30,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-10-01 00:41:30,041 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 137 [2018-10-01 00:41:30,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:30,042 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-10-01 00:41:30,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-10-01 00:41:30,042 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-10-01 00:41:30,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-01 00:41:30,042 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:30,043 INFO L375 BasicCegarLoop]: trace histogram [135, 1, 1, 1] [2018-10-01 00:41:30,043 INFO L423 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:30,043 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:30,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1816712, now seen corresponding path program 135 times [2018-10-01 00:41:30,043 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:30,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:30,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:30,044 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:30,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:30,913 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:30,914 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:30,914 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:30,921 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:41:31,056 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2018-10-01 00:41:31,056 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:31,060 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:31,513 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:31,533 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:31,533 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137, 137] total 137 [2018-10-01 00:41:31,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-10-01 00:41:31,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-10-01 00:41:31,534 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:31,534 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 138 states. [2018-10-01 00:41:32,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:32,228 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2018-10-01 00:41:32,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-10-01 00:41:32,228 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 138 [2018-10-01 00:41:32,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:32,229 INFO L225 Difference]: With dead ends: 142 [2018-10-01 00:41:32,229 INFO L226 Difference]: Without dead ends: 140 [2018-10-01 00:41:32,229 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:41:32,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-10-01 00:41:32,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-10-01 00:41:32,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-10-01 00:41:32,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-10-01 00:41:32,231 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 138 [2018-10-01 00:41:32,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:32,232 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-10-01 00:41:32,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-10-01 00:41:32,232 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-10-01 00:41:32,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-01 00:41:32,232 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:32,232 INFO L375 BasicCegarLoop]: trace histogram [136, 1, 1, 1] [2018-10-01 00:41:32,233 INFO L423 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:32,233 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:32,233 INFO L82 PathProgramCache]: Analyzing trace with hash 56316097, now seen corresponding path program 136 times [2018-10-01 00:41:32,233 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:32,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:32,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:32,234 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:32,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:33,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:33,065 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:33,065 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:33,072 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:41:33,143 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:41:33,143 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:33,147 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:33,425 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:33,445 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:33,445 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 138] total 138 [2018-10-01 00:41:33,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-10-01 00:41:33,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-10-01 00:41:33,447 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:33,447 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 139 states. [2018-10-01 00:41:34,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:34,714 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-01 00:41:34,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-10-01 00:41:34,715 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 139 [2018-10-01 00:41:34,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:34,715 INFO L225 Difference]: With dead ends: 143 [2018-10-01 00:41:34,715 INFO L226 Difference]: Without dead ends: 141 [2018-10-01 00:41:34,715 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:41:34,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-01 00:41:34,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-01 00:41:34,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-01 00:41:34,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-10-01 00:41:34,718 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 139 [2018-10-01 00:41:34,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:34,718 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-10-01 00:41:34,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-10-01 00:41:34,719 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-10-01 00:41:34,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-01 00:41:34,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:34,719 INFO L375 BasicCegarLoop]: trace histogram [137, 1, 1, 1] [2018-10-01 00:41:34,720 INFO L423 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:34,720 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:34,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1745797032, now seen corresponding path program 137 times [2018-10-01 00:41:34,720 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:34,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:34,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:34,721 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:34,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:35,546 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:35,546 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:35,546 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:35,553 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:41:35,714 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 70 check-sat command(s) [2018-10-01 00:41:35,714 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:35,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:36,005 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:36,025 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:36,025 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139] total 139 [2018-10-01 00:41:36,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-10-01 00:41:36,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-10-01 00:41:36,027 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:36,027 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 140 states. [2018-10-01 00:41:37,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:37,063 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-10-01 00:41:37,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-10-01 00:41:37,064 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 140 [2018-10-01 00:41:37,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:37,064 INFO L225 Difference]: With dead ends: 144 [2018-10-01 00:41:37,064 INFO L226 Difference]: Without dead ends: 142 [2018-10-01 00:41:37,065 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:41:37,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-10-01 00:41:37,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-10-01 00:41:37,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-10-01 00:41:37,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-10-01 00:41:37,066 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 140 [2018-10-01 00:41:37,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:37,067 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-10-01 00:41:37,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-10-01 00:41:37,067 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-10-01 00:41:37,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-01 00:41:37,067 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:37,067 INFO L375 BasicCegarLoop]: trace histogram [138, 1, 1, 1] [2018-10-01 00:41:37,067 INFO L423 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:37,067 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:37,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1714868831, now seen corresponding path program 138 times [2018-10-01 00:41:37,068 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:37,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:37,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:37,068 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:37,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:37,890 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:37,890 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:37,890 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:37,898 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:41:38,037 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 70 check-sat command(s) [2018-10-01 00:41:38,037 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:38,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:38,322 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:38,342 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:38,343 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 140] total 140 [2018-10-01 00:41:38,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-10-01 00:41:38,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-10-01 00:41:38,344 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:38,344 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 141 states. [2018-10-01 00:41:39,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:39,658 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-01 00:41:39,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-10-01 00:41:39,659 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 141 [2018-10-01 00:41:39,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:39,659 INFO L225 Difference]: With dead ends: 145 [2018-10-01 00:41:39,659 INFO L226 Difference]: Without dead ends: 143 [2018-10-01 00:41:39,659 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:41:39,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-01 00:41:39,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-01 00:41:39,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-01 00:41:39,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-10-01 00:41:39,661 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 141 [2018-10-01 00:41:39,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:39,662 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-10-01 00:41:39,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-10-01 00:41:39,662 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-10-01 00:41:39,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-01 00:41:39,662 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:39,662 INFO L375 BasicCegarLoop]: trace histogram [139, 1, 1, 1] [2018-10-01 00:41:39,662 INFO L423 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:39,663 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:39,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1621328184, now seen corresponding path program 139 times [2018-10-01 00:41:39,663 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:39,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:39,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:39,663 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:39,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:40,497 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:40,497 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:40,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:40,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:40,871 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:40,890 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:40,890 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141, 141] total 141 [2018-10-01 00:41:40,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-10-01 00:41:40,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-10-01 00:41:40,892 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:40,892 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 142 states. [2018-10-01 00:41:41,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:41,865 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-10-01 00:41:41,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-10-01 00:41:41,865 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 142 [2018-10-01 00:41:41,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:41,866 INFO L225 Difference]: With dead ends: 146 [2018-10-01 00:41:41,866 INFO L226 Difference]: Without dead ends: 144 [2018-10-01 00:41:41,866 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:41:41,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-10-01 00:41:41,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-10-01 00:41:41,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-10-01 00:41:41,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-10-01 00:41:41,868 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 142 [2018-10-01 00:41:41,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:41,868 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-10-01 00:41:41,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-10-01 00:41:41,868 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-10-01 00:41:41,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-01 00:41:41,869 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:41,869 INFO L375 BasicCegarLoop]: trace histogram [140, 1, 1, 1] [2018-10-01 00:41:41,869 INFO L423 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:41,869 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:41,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1278431873, now seen corresponding path program 140 times [2018-10-01 00:41:41,869 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:41,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:41,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:41,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:41,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:42,741 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 9870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:42,741 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:42,741 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:42,748 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:41:42,820 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:41:42,820 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:42,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:43,114 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 9870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:43,135 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:43,135 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142, 142] total 142 [2018-10-01 00:41:43,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-10-01 00:41:43,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-10-01 00:41:43,137 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:43,137 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 143 states. [2018-10-01 00:41:44,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:44,533 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-10-01 00:41:44,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-10-01 00:41:44,534 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 143 [2018-10-01 00:41:44,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:44,534 INFO L225 Difference]: With dead ends: 147 [2018-10-01 00:41:44,534 INFO L226 Difference]: Without dead ends: 145 [2018-10-01 00:41:44,534 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:41:44,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-01 00:41:44,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-10-01 00:41:44,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-01 00:41:44,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-01 00:41:44,537 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 143 [2018-10-01 00:41:44,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:44,537 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-01 00:41:44,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-10-01 00:41:44,538 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-01 00:41:44,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-01 00:41:44,538 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:44,538 INFO L375 BasicCegarLoop]: trace histogram [141, 1, 1, 1] [2018-10-01 00:41:44,538 INFO L423 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:44,538 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:44,538 INFO L82 PathProgramCache]: Analyzing trace with hash 976680424, now seen corresponding path program 141 times [2018-10-01 00:41:44,538 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:44,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:44,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:44,539 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:44,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:45,379 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:45,379 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:45,379 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:45,387 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:41:45,538 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 72 check-sat command(s) [2018-10-01 00:41:45,539 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:45,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:45,824 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:45,845 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:45,846 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143, 143] total 143 [2018-10-01 00:41:45,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-10-01 00:41:45,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-10-01 00:41:45,847 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:45,847 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 144 states. [2018-10-01 00:41:46,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:46,730 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-10-01 00:41:46,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-10-01 00:41:46,730 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 144 [2018-10-01 00:41:46,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:46,731 INFO L225 Difference]: With dead ends: 148 [2018-10-01 00:41:46,731 INFO L226 Difference]: Without dead ends: 146 [2018-10-01 00:41:46,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:41:46,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-10-01 00:41:46,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-10-01 00:41:46,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-10-01 00:41:46,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-10-01 00:41:46,734 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 144 [2018-10-01 00:41:46,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:46,735 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-10-01 00:41:46,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-10-01 00:41:46,735 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-10-01 00:41:46,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-01 00:41:46,735 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:46,735 INFO L375 BasicCegarLoop]: trace histogram [142, 1, 1, 1] [2018-10-01 00:41:46,735 INFO L423 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:46,735 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:46,736 INFO L82 PathProgramCache]: Analyzing trace with hash 212320097, now seen corresponding path program 142 times [2018-10-01 00:41:46,736 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:46,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:46,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:46,736 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:46,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:47,641 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 0 proven. 10153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:47,641 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:47,641 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:47,650 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:41:47,735 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:41:47,736 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:47,741 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:48,085 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 0 proven. 10153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:48,105 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:48,105 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144, 144] total 144 [2018-10-01 00:41:48,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-10-01 00:41:48,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-10-01 00:41:48,107 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:48,107 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 145 states. [2018-10-01 00:41:49,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:49,476 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-10-01 00:41:49,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-10-01 00:41:49,477 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 145 [2018-10-01 00:41:49,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:49,477 INFO L225 Difference]: With dead ends: 149 [2018-10-01 00:41:49,477 INFO L226 Difference]: Without dead ends: 147 [2018-10-01 00:41:49,478 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:41:49,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-01 00:41:49,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-01 00:41:49,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-01 00:41:49,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-10-01 00:41:49,480 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 145 [2018-10-01 00:41:49,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:49,480 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-10-01 00:41:49,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-10-01 00:41:49,480 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-10-01 00:41:49,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-01 00:41:49,481 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:49,481 INFO L375 BasicCegarLoop]: trace histogram [143, 1, 1, 1] [2018-10-01 00:41:49,482 INFO L423 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:49,482 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:49,482 INFO L82 PathProgramCache]: Analyzing trace with hash -2008013560, now seen corresponding path program 143 times [2018-10-01 00:41:49,482 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:49,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:49,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:49,483 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:49,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:50,342 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:50,343 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:50,343 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:50,350 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:41:50,520 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2018-10-01 00:41:50,520 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:50,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:50,852 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:50,852 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145, 145] total 145 [2018-10-01 00:41:50,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-10-01 00:41:50,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-10-01 00:41:50,854 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:50,854 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 146 states. [2018-10-01 00:41:52,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:52,206 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2018-10-01 00:41:52,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-10-01 00:41:52,207 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 146 [2018-10-01 00:41:52,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:52,207 INFO L225 Difference]: With dead ends: 150 [2018-10-01 00:41:52,207 INFO L226 Difference]: Without dead ends: 148 [2018-10-01 00:41:52,207 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:41:52,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-10-01 00:41:52,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-10-01 00:41:52,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-10-01 00:41:52,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-10-01 00:41:52,210 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 146 [2018-10-01 00:41:52,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:52,210 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-10-01 00:41:52,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-10-01 00:41:52,210 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-10-01 00:41:52,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-01 00:41:52,210 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:52,210 INFO L375 BasicCegarLoop]: trace histogram [144, 1, 1, 1] [2018-10-01 00:41:52,210 INFO L423 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:52,211 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:52,211 INFO L82 PathProgramCache]: Analyzing trace with hash -2118880191, now seen corresponding path program 144 times [2018-10-01 00:41:52,211 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:52,211 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:52,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:52,211 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:52,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:53,090 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 0 proven. 10440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:53,090 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:53,090 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:53,097 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:41:53,245 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-01 00:41:53,245 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:53,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:53,537 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 0 proven. 10440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:53,557 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:53,557 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146, 146] total 146 [2018-10-01 00:41:53,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-10-01 00:41:53,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-10-01 00:41:53,559 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:53,559 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 147 states. [2018-10-01 00:41:54,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:54,388 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-10-01 00:41:54,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-10-01 00:41:54,388 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 147 [2018-10-01 00:41:54,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:54,389 INFO L225 Difference]: With dead ends: 151 [2018-10-01 00:41:54,389 INFO L226 Difference]: Without dead ends: 149 [2018-10-01 00:41:54,389 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:41:54,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-01 00:41:54,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-10-01 00:41:54,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-01 00:41:54,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-10-01 00:41:54,391 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 147 [2018-10-01 00:41:54,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:54,391 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-10-01 00:41:54,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-10-01 00:41:54,391 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-10-01 00:41:54,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-01 00:41:54,392 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:54,392 INFO L375 BasicCegarLoop]: trace histogram [145, 1, 1, 1] [2018-10-01 00:41:54,392 INFO L423 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:54,392 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:54,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1260778456, now seen corresponding path program 145 times [2018-10-01 00:41:54,392 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:54,392 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:54,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:54,393 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:54,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:55,318 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:55,318 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:55,318 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:55,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:55,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:55,676 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:55,696 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:55,697 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147, 147] total 147 [2018-10-01 00:41:55,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-10-01 00:41:55,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-10-01 00:41:55,699 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:55,699 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 148 states. [2018-10-01 00:41:57,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:57,136 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2018-10-01 00:41:57,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-10-01 00:41:57,136 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 148 [2018-10-01 00:41:57,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:57,136 INFO L225 Difference]: With dead ends: 152 [2018-10-01 00:41:57,137 INFO L226 Difference]: Without dead ends: 150 [2018-10-01 00:41:57,137 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:41:57,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-10-01 00:41:57,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-10-01 00:41:57,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-10-01 00:41:57,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-10-01 00:41:57,139 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 148 [2018-10-01 00:41:57,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:57,139 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-10-01 00:41:57,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-10-01 00:41:57,139 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-10-01 00:41:57,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-01 00:41:57,139 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:57,140 INFO L375 BasicCegarLoop]: trace histogram [146, 1, 1, 1] [2018-10-01 00:41:57,140 INFO L423 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:57,140 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:57,140 INFO L82 PathProgramCache]: Analyzing trace with hash -429428447, now seen corresponding path program 146 times [2018-10-01 00:41:57,140 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:57,140 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:57,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:57,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:57,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:58,026 INFO L134 CoverageAnalysis]: Checked inductivity of 10731 backedges. 0 proven. 10731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:58,026 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:58,027 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:58,033 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:41:58,113 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:41:58,113 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:58,116 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:58,388 INFO L134 CoverageAnalysis]: Checked inductivity of 10731 backedges. 0 proven. 10731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:58,409 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:58,409 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148, 148] total 148 [2018-10-01 00:41:58,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-10-01 00:41:58,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-10-01 00:41:58,411 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:58,411 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 149 states. [2018-10-01 00:41:59,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:59,815 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-01 00:41:59,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-10-01 00:41:59,815 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 149 [2018-10-01 00:41:59,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:59,816 INFO L225 Difference]: With dead ends: 153 [2018-10-01 00:41:59,816 INFO L226 Difference]: Without dead ends: 151 [2018-10-01 00:41:59,816 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:41:59,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-01 00:41:59,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-01 00:41:59,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-01 00:41:59,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-10-01 00:41:59,818 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 149 [2018-10-01 00:41:59,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:59,818 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-10-01 00:41:59,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-10-01 00:41:59,819 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-10-01 00:41:59,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-01 00:41:59,820 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:59,820 INFO L375 BasicCegarLoop]: trace histogram [147, 1, 1, 1] [2018-10-01 00:41:59,820 INFO L423 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:59,820 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:59,820 INFO L82 PathProgramCache]: Analyzing trace with hash -427381944, now seen corresponding path program 147 times [2018-10-01 00:41:59,820 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:59,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:59,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:59,821 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:59,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:00,717 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:00,718 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:00,718 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:00,725 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:42:00,887 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 75 check-sat command(s) [2018-10-01 00:42:00,888 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:00,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:01,172 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:01,193 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:01,193 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149, 149] total 149 [2018-10-01 00:42:01,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-10-01 00:42:01,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-10-01 00:42:01,195 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:01,196 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 150 states. [2018-10-01 00:42:02,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:02,847 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-10-01 00:42:02,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-10-01 00:42:02,848 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 150 [2018-10-01 00:42:02,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:02,848 INFO L225 Difference]: With dead ends: 154 [2018-10-01 00:42:02,848 INFO L226 Difference]: Without dead ends: 152 [2018-10-01 00:42:02,848 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:42:02,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-10-01 00:42:02,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-10-01 00:42:02,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-10-01 00:42:02,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-10-01 00:42:02,850 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 150 [2018-10-01 00:42:02,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:02,850 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-10-01 00:42:02,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-10-01 00:42:02,851 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-10-01 00:42:02,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-01 00:42:02,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:02,851 INFO L375 BasicCegarLoop]: trace histogram [148, 1, 1, 1] [2018-10-01 00:42:02,851 INFO L423 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:02,851 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:02,851 INFO L82 PathProgramCache]: Analyzing trace with hash -363940351, now seen corresponding path program 148 times [2018-10-01 00:42:02,851 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:02,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:02,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:02,852 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:02,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:03,776 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 0 proven. 11026 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:03,776 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:03,777 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:03,784 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:42:03,857 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:42:03,857 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:03,861 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:04,137 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 0 proven. 11026 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:04,159 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:04,159 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150, 150] total 150 [2018-10-01 00:42:04,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-10-01 00:42:04,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-10-01 00:42:04,161 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:04,161 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 151 states. [2018-10-01 00:42:05,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:05,537 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-10-01 00:42:05,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-10-01 00:42:05,538 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 151 [2018-10-01 00:42:05,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:05,538 INFO L225 Difference]: With dead ends: 155 [2018-10-01 00:42:05,538 INFO L226 Difference]: Without dead ends: 153 [2018-10-01 00:42:05,538 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:42:05,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-01 00:42:05,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-10-01 00:42:05,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-01 00:42:05,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-10-01 00:42:05,540 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 151 [2018-10-01 00:42:05,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:05,541 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-10-01 00:42:05,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-10-01 00:42:05,541 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-10-01 00:42:05,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-01 00:42:05,541 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:05,541 INFO L375 BasicCegarLoop]: trace histogram [149, 1, 1, 1] [2018-10-01 00:42:05,541 INFO L423 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:05,542 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:05,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1602749032, now seen corresponding path program 149 times [2018-10-01 00:42:05,542 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:05,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:05,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:05,542 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:05,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:06,487 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:06,487 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:06,487 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:06,494 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:42:06,682 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) [2018-10-01 00:42:06,682 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:06,688 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:06,969 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:06,990 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:06,990 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151, 151] total 151 [2018-10-01 00:42:06,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-10-01 00:42:06,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-10-01 00:42:06,993 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:06,993 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 152 states. [2018-10-01 00:42:08,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:08,216 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-10-01 00:42:08,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-10-01 00:42:08,216 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 152 [2018-10-01 00:42:08,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:08,216 INFO L225 Difference]: With dead ends: 156 [2018-10-01 00:42:08,216 INFO L226 Difference]: Without dead ends: 154 [2018-10-01 00:42:08,217 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:42:08,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-10-01 00:42:08,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-10-01 00:42:08,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-10-01 00:42:08,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-10-01 00:42:08,219 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 152 [2018-10-01 00:42:08,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:08,220 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-10-01 00:42:08,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-10-01 00:42:08,220 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-10-01 00:42:08,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-01 00:42:08,221 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:08,221 INFO L375 BasicCegarLoop]: trace histogram [150, 1, 1, 1] [2018-10-01 00:42:08,221 INFO L423 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:08,221 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:08,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1854389535, now seen corresponding path program 150 times [2018-10-01 00:42:08,221 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:08,221 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:08,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:08,222 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:08,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 11325 backedges. 0 proven. 11325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:09,189 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:09,189 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:09,196 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:42:09,355 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 76 check-sat command(s) [2018-10-01 00:42:09,355 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:09,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:09,637 INFO L134 CoverageAnalysis]: Checked inductivity of 11325 backedges. 0 proven. 11325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:09,657 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:09,657 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152, 152] total 152 [2018-10-01 00:42:09,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-10-01 00:42:09,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-10-01 00:42:09,659 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:09,659 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 153 states. [2018-10-01 00:42:10,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:10,572 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-01 00:42:10,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-10-01 00:42:10,572 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 153 [2018-10-01 00:42:10,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:10,573 INFO L225 Difference]: With dead ends: 157 [2018-10-01 00:42:10,573 INFO L226 Difference]: Without dead ends: 155 [2018-10-01 00:42:10,573 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:42:10,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-01 00:42:10,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-01 00:42:10,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-01 00:42:10,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-10-01 00:42:10,575 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 153 [2018-10-01 00:42:10,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:10,575 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-10-01 00:42:10,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-10-01 00:42:10,575 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-10-01 00:42:10,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-01 00:42:10,576 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:10,576 INFO L375 BasicCegarLoop]: trace histogram [151, 1, 1, 1] [2018-10-01 00:42:10,576 INFO L423 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:10,576 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:10,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1651502712, now seen corresponding path program 151 times [2018-10-01 00:42:10,576 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:10,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:10,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:10,577 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:10,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:11,509 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:11,509 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:11,510 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:11,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:11,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:11,909 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:11,929 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:11,929 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153, 153] total 153 [2018-10-01 00:42:11,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-10-01 00:42:11,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-10-01 00:42:11,931 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:11,931 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 154 states. [2018-10-01 00:42:12,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:12,953 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2018-10-01 00:42:12,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-10-01 00:42:12,953 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 154 [2018-10-01 00:42:12,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:12,954 INFO L225 Difference]: With dead ends: 158 [2018-10-01 00:42:12,954 INFO L226 Difference]: Without dead ends: 156 [2018-10-01 00:42:12,954 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:42:12,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-01 00:42:12,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-10-01 00:42:12,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-10-01 00:42:12,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-10-01 00:42:12,956 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 154 [2018-10-01 00:42:12,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:12,956 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-10-01 00:42:12,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-10-01 00:42:12,956 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-10-01 00:42:12,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-01 00:42:12,957 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:12,957 INFO L375 BasicCegarLoop]: trace histogram [152, 1, 1, 1] [2018-10-01 00:42:12,957 INFO L423 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:12,957 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:12,957 INFO L82 PathProgramCache]: Analyzing trace with hash 343021505, now seen corresponding path program 152 times [2018-10-01 00:42:12,957 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:12,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:12,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:12,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:12,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:13,897 INFO L134 CoverageAnalysis]: Checked inductivity of 11628 backedges. 0 proven. 11628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:13,897 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:13,898 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:13,906 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:42:13,982 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:42:13,982 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:13,986 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:14,266 INFO L134 CoverageAnalysis]: Checked inductivity of 11628 backedges. 0 proven. 11628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:14,286 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:14,286 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154, 154] total 154 [2018-10-01 00:42:14,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-10-01 00:42:14,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-10-01 00:42:14,289 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:14,289 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 155 states. [2018-10-01 00:42:15,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:15,275 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-01 00:42:15,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-10-01 00:42:15,275 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 155 [2018-10-01 00:42:15,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:15,276 INFO L225 Difference]: With dead ends: 159 [2018-10-01 00:42:15,276 INFO L226 Difference]: Without dead ends: 157 [2018-10-01 00:42:15,276 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:42:15,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-01 00:42:15,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-10-01 00:42:15,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-01 00:42:15,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-10-01 00:42:15,279 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 155 [2018-10-01 00:42:15,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:15,279 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-10-01 00:42:15,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-10-01 00:42:15,279 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-10-01 00:42:15,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-01 00:42:15,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:15,280 INFO L375 BasicCegarLoop]: trace histogram [153, 1, 1, 1] [2018-10-01 00:42:15,280 INFO L423 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:15,280 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:15,280 INFO L82 PathProgramCache]: Analyzing trace with hash 2043730088, now seen corresponding path program 153 times [2018-10-01 00:42:15,281 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:15,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:15,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:15,281 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:15,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:16,237 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:16,238 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:16,238 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:16,245 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:42:16,410 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 78 check-sat command(s) [2018-10-01 00:42:16,411 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:16,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:16,705 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:16,725 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:16,725 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155, 155] total 155 [2018-10-01 00:42:16,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-10-01 00:42:16,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-10-01 00:42:16,727 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:16,728 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 156 states. [2018-10-01 00:42:17,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:17,882 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2018-10-01 00:42:17,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-10-01 00:42:17,883 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 156 [2018-10-01 00:42:17,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:17,883 INFO L225 Difference]: With dead ends: 160 [2018-10-01 00:42:17,883 INFO L226 Difference]: Without dead ends: 158 [2018-10-01 00:42:17,883 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:42:17,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-10-01 00:42:17,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-10-01 00:42:17,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-10-01 00:42:17,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-10-01 00:42:17,886 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 156 [2018-10-01 00:42:17,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:17,886 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-10-01 00:42:17,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-10-01 00:42:17,886 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-10-01 00:42:17,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-01 00:42:17,886 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:17,886 INFO L375 BasicCegarLoop]: trace histogram [154, 1, 1, 1] [2018-10-01 00:42:17,887 INFO L423 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:17,887 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:17,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1068878687, now seen corresponding path program 154 times [2018-10-01 00:42:17,887 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:17,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:17,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:17,887 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:17,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:18,868 INFO L134 CoverageAnalysis]: Checked inductivity of 11935 backedges. 0 proven. 11935 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:18,869 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:18,869 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:18,875 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:42:18,953 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:42:18,953 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:18,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:19,257 INFO L134 CoverageAnalysis]: Checked inductivity of 11935 backedges. 0 proven. 11935 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:19,277 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:19,277 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156, 156] total 156 [2018-10-01 00:42:19,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-10-01 00:42:19,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-10-01 00:42:19,279 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:19,279 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 157 states. [2018-10-01 00:42:20,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:20,860 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-10-01 00:42:20,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-10-01 00:42:20,860 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 157 [2018-10-01 00:42:20,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:20,861 INFO L225 Difference]: With dead ends: 161 [2018-10-01 00:42:20,861 INFO L226 Difference]: Without dead ends: 159 [2018-10-01 00:42:20,861 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:42:20,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-01 00:42:20,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-01 00:42:20,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-01 00:42:20,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-01 00:42:20,863 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 157 [2018-10-01 00:42:20,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:20,863 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-01 00:42:20,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-10-01 00:42:20,863 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-01 00:42:20,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-01 00:42:20,864 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:20,864 INFO L375 BasicCegarLoop]: trace histogram [155, 1, 1, 1] [2018-10-01 00:42:20,864 INFO L423 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:20,864 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:20,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1224497096, now seen corresponding path program 155 times [2018-10-01 00:42:20,864 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:20,864 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:20,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:20,865 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:20,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:21,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:21,906 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:21,906 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:21,913 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:42:22,112 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 79 check-sat command(s) [2018-10-01 00:42:22,112 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:22,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:22,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:22,470 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:22,470 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157, 157] total 157 [2018-10-01 00:42:22,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-10-01 00:42:22,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-10-01 00:42:22,472 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:22,472 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 158 states. [2018-10-01 00:42:24,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:24,396 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2018-10-01 00:42:24,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-10-01 00:42:24,396 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 158 [2018-10-01 00:42:24,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:24,397 INFO L225 Difference]: With dead ends: 162 [2018-10-01 00:42:24,397 INFO L226 Difference]: Without dead ends: 160 [2018-10-01 00:42:24,397 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:42:24,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-10-01 00:42:24,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-10-01 00:42:24,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-10-01 00:42:24,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-10-01 00:42:24,399 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 158 [2018-10-01 00:42:24,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:24,399 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-10-01 00:42:24,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-10-01 00:42:24,399 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-10-01 00:42:24,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-01 00:42:24,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:24,400 INFO L375 BasicCegarLoop]: trace histogram [156, 1, 1, 1] [2018-10-01 00:42:24,400 INFO L423 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:24,400 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:24,400 INFO L82 PathProgramCache]: Analyzing trace with hash -695297663, now seen corresponding path program 156 times [2018-10-01 00:42:24,400 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:24,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:24,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:24,401 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:24,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:25,370 INFO L134 CoverageAnalysis]: Checked inductivity of 12246 backedges. 0 proven. 12246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:25,370 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:25,370 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:25,377 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:42:25,545 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-01 00:42:25,545 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:25,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 12246 backedges. 0 proven. 12246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:25,881 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:25,881 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158, 158] total 158 [2018-10-01 00:42:25,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-10-01 00:42:25,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-10-01 00:42:25,883 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:25,883 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 159 states. [2018-10-01 00:42:27,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:27,820 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-10-01 00:42:27,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-10-01 00:42:27,820 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 159 [2018-10-01 00:42:27,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:27,821 INFO L225 Difference]: With dead ends: 163 [2018-10-01 00:42:27,821 INFO L226 Difference]: Without dead ends: 161 [2018-10-01 00:42:27,821 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:42:27,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-01 00:42:27,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-10-01 00:42:27,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-01 00:42:27,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-10-01 00:42:27,823 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 159 [2018-10-01 00:42:27,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:27,823 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-10-01 00:42:27,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-10-01 00:42:27,823 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-10-01 00:42:27,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-01 00:42:27,824 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:27,824 INFO L375 BasicCegarLoop]: trace histogram [157, 1, 1, 1] [2018-10-01 00:42:27,824 INFO L423 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:27,824 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:27,824 INFO L82 PathProgramCache]: Analyzing trace with hash -79393048, now seen corresponding path program 157 times [2018-10-01 00:42:27,824 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:27,824 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:27,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:27,825 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:27,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:28,790 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:28,790 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:28,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:28,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:29,211 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:29,211 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159, 159] total 159 [2018-10-01 00:42:29,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-10-01 00:42:29,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-10-01 00:42:29,213 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:29,213 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 160 states. [2018-10-01 00:42:30,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:30,659 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2018-10-01 00:42:30,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-10-01 00:42:30,659 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 160 [2018-10-01 00:42:30,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:30,659 INFO L225 Difference]: With dead ends: 164 [2018-10-01 00:42:30,659 INFO L226 Difference]: Without dead ends: 162 [2018-10-01 00:42:30,660 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:42:30,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-10-01 00:42:30,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-10-01 00:42:30,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-10-01 00:42:30,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-10-01 00:42:30,662 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 160 [2018-10-01 00:42:30,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:30,662 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-10-01 00:42:30,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-10-01 00:42:30,662 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-10-01 00:42:30,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-01 00:42:30,663 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:30,663 INFO L375 BasicCegarLoop]: trace histogram [158, 1, 1, 1] [2018-10-01 00:42:30,663 INFO L423 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:30,663 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:30,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1833780833, now seen corresponding path program 158 times [2018-10-01 00:42:30,663 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:30,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:30,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:30,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:30,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:31,665 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 0 proven. 12561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:31,666 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:31,666 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:31,673 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:42:31,755 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:42:31,756 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:31,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:32,059 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 0 proven. 12561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:32,079 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:32,079 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160, 160] total 160 [2018-10-01 00:42:32,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-10-01 00:42:32,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-10-01 00:42:32,082 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:32,082 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 161 states. [2018-10-01 00:42:33,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:33,242 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-10-01 00:42:33,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-10-01 00:42:33,242 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 161 [2018-10-01 00:42:33,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:33,242 INFO L225 Difference]: With dead ends: 165 [2018-10-01 00:42:33,243 INFO L226 Difference]: Without dead ends: 163 [2018-10-01 00:42:33,243 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:42:33,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-01 00:42:33,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-01 00:42:33,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-01 00:42:33,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-10-01 00:42:33,245 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 161 [2018-10-01 00:42:33,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:33,245 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-10-01 00:42:33,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-10-01 00:42:33,245 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-10-01 00:42:33,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-01 00:42:33,246 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:33,246 INFO L375 BasicCegarLoop]: trace histogram [159, 1, 1, 1] [2018-10-01 00:42:33,246 INFO L423 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:33,246 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:33,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1012629000, now seen corresponding path program 159 times [2018-10-01 00:42:33,246 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:33,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:33,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:33,247 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:33,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:34,296 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:34,296 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:34,296 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:34,304 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:42:34,536 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 81 check-sat command(s) [2018-10-01 00:42:34,537 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:34,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:34,841 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:34,861 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:34,862 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161, 161] total 161 [2018-10-01 00:42:34,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-10-01 00:42:34,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-10-01 00:42:34,865 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:34,865 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 162 states. [2018-10-01 00:42:36,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:36,839 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2018-10-01 00:42:36,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-10-01 00:42:36,839 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 162 [2018-10-01 00:42:36,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:36,840 INFO L225 Difference]: With dead ends: 166 [2018-10-01 00:42:36,840 INFO L226 Difference]: Without dead ends: 164 [2018-10-01 00:42:36,840 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:42:36,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-10-01 00:42:36,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-10-01 00:42:36,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-10-01 00:42:36,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2018-10-01 00:42:36,842 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 162 [2018-10-01 00:42:36,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:36,842 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2018-10-01 00:42:36,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-10-01 00:42:36,843 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2018-10-01 00:42:36,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-01 00:42:36,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:36,843 INFO L375 BasicCegarLoop]: trace histogram [160, 1, 1, 1] [2018-10-01 00:42:36,843 INFO L423 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:36,843 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:36,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1326725953, now seen corresponding path program 160 times [2018-10-01 00:42:36,844 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:36,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:36,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:36,844 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:36,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 12880 backedges. 0 proven. 12880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:38,027 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:38,027 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:38,034 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:42:38,117 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:42:38,117 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:38,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 12880 backedges. 0 proven. 12880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:38,447 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:38,447 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162, 162] total 162 [2018-10-01 00:42:38,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-10-01 00:42:38,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-10-01 00:42:38,449 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:38,449 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 163 states. [2018-10-01 00:42:40,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:40,399 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-10-01 00:42:40,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-10-01 00:42:40,399 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 163 [2018-10-01 00:42:40,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:40,400 INFO L225 Difference]: With dead ends: 167 [2018-10-01 00:42:40,400 INFO L226 Difference]: Without dead ends: 165 [2018-10-01 00:42:40,400 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:42:40,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-01 00:42:40,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-10-01 00:42:40,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-01 00:42:40,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-10-01 00:42:40,402 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 163 [2018-10-01 00:42:40,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:40,402 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-10-01 00:42:40,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-10-01 00:42:40,402 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-10-01 00:42:40,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-01 00:42:40,403 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:40,403 INFO L375 BasicCegarLoop]: trace histogram [161, 1, 1, 1] [2018-10-01 00:42:40,403 INFO L423 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:40,403 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:40,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1821170392, now seen corresponding path program 161 times [2018-10-01 00:42:40,403 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:40,403 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:40,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:40,404 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:40,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:41,433 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:41,434 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:41,434 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:41,440 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:42:41,647 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 82 check-sat command(s) [2018-10-01 00:42:41,648 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:41,654 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:41,961 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:41,982 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:41,982 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163, 163] total 163 [2018-10-01 00:42:41,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-10-01 00:42:41,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-10-01 00:42:41,985 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:41,985 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 164 states. [2018-10-01 00:42:43,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:43,177 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2018-10-01 00:42:43,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-10-01 00:42:43,177 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 164 [2018-10-01 00:42:43,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:43,178 INFO L225 Difference]: With dead ends: 168 [2018-10-01 00:42:43,178 INFO L226 Difference]: Without dead ends: 166 [2018-10-01 00:42:43,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:42:43,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-10-01 00:42:43,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-10-01 00:42:43,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-10-01 00:42:43,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-10-01 00:42:43,182 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 164 [2018-10-01 00:42:43,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:43,182 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-10-01 00:42:43,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-10-01 00:42:43,182 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-10-01 00:42:43,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-01 00:42:43,183 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:43,183 INFO L375 BasicCegarLoop]: trace histogram [162, 1, 1, 1] [2018-10-01 00:42:43,183 INFO L423 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:43,183 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:43,184 INFO L82 PathProgramCache]: Analyzing trace with hash -621709279, now seen corresponding path program 162 times [2018-10-01 00:42:43,184 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:43,184 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:43,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:43,184 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:43,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:44,414 INFO L134 CoverageAnalysis]: Checked inductivity of 13203 backedges. 0 proven. 13203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:44,414 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:44,414 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:44,421 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:42:44,600 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 82 check-sat command(s) [2018-10-01 00:42:44,600 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:44,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:44,907 INFO L134 CoverageAnalysis]: Checked inductivity of 13203 backedges. 0 proven. 13203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:44,928 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:44,928 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164, 164] total 164 [2018-10-01 00:42:44,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-10-01 00:42:44,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-10-01 00:42:44,930 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:44,930 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 165 states. [2018-10-01 00:42:47,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:47,006 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-01 00:42:47,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-10-01 00:42:47,007 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 165 [2018-10-01 00:42:47,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:47,007 INFO L225 Difference]: With dead ends: 169 [2018-10-01 00:42:47,007 INFO L226 Difference]: Without dead ends: 167 [2018-10-01 00:42:47,007 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:42:47,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-01 00:42:47,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-01 00:42:47,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-01 00:42:47,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-10-01 00:42:47,009 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 165 [2018-10-01 00:42:47,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:47,010 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-10-01 00:42:47,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-10-01 00:42:47,010 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-10-01 00:42:47,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-01 00:42:47,010 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:47,010 INFO L375 BasicCegarLoop]: trace histogram [163, 1, 1, 1] [2018-10-01 00:42:47,011 INFO L423 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:47,011 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:47,011 INFO L82 PathProgramCache]: Analyzing trace with hash -2093120440, now seen corresponding path program 163 times [2018-10-01 00:42:47,011 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:47,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:47,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:47,012 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:47,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:48,200 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:48,201 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:48,201 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:48,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:48,297 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:48,625 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:48,647 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:48,647 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165, 165] total 165 [2018-10-01 00:42:48,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-10-01 00:42:48,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-10-01 00:42:48,649 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:48,649 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 166 states. [2018-10-01 00:42:50,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:50,009 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2018-10-01 00:42:50,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-10-01 00:42:50,010 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 166 [2018-10-01 00:42:50,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:50,010 INFO L225 Difference]: With dead ends: 170 [2018-10-01 00:42:50,010 INFO L226 Difference]: Without dead ends: 168 [2018-10-01 00:42:50,011 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:42:50,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-10-01 00:42:50,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-10-01 00:42:50,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-10-01 00:42:50,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2018-10-01 00:42:50,013 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 166 [2018-10-01 00:42:50,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:50,013 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2018-10-01 00:42:50,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-10-01 00:42:50,013 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2018-10-01 00:42:50,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-01 00:42:50,014 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:50,014 INFO L375 BasicCegarLoop]: trace histogram [164, 1, 1, 1] [2018-10-01 00:42:50,014 INFO L423 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:50,014 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:50,014 INFO L82 PathProgramCache]: Analyzing trace with hash -462226175, now seen corresponding path program 164 times [2018-10-01 00:42:50,014 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:50,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:50,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:50,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:50,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:51,071 INFO L134 CoverageAnalysis]: Checked inductivity of 13530 backedges. 0 proven. 13530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:51,071 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:51,071 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:51,079 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:42:51,164 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:42:51,165 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:51,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:51,478 INFO L134 CoverageAnalysis]: Checked inductivity of 13530 backedges. 0 proven. 13530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:51,498 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:51,498 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166, 166] total 166 [2018-10-01 00:42:51,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-10-01 00:42:51,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-10-01 00:42:51,500 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:51,501 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 167 states. [2018-10-01 00:42:53,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:53,637 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-10-01 00:42:53,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-10-01 00:42:53,638 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 167 [2018-10-01 00:42:53,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:53,638 INFO L225 Difference]: With dead ends: 171 [2018-10-01 00:42:53,638 INFO L226 Difference]: Without dead ends: 169 [2018-10-01 00:42:53,638 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:42:53,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-01 00:42:53,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-10-01 00:42:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-01 00:42:53,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-10-01 00:42:53,641 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 167 [2018-10-01 00:42:53,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:53,641 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-10-01 00:42:53,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-10-01 00:42:53,641 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-10-01 00:42:53,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-01 00:42:53,641 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:53,641 INFO L375 BasicCegarLoop]: trace histogram [165, 1, 1, 1] [2018-10-01 00:42:53,642 INFO L423 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:53,642 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:53,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1444111512, now seen corresponding path program 165 times [2018-10-01 00:42:53,642 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:53,642 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:53,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:53,642 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:53,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:54,706 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:54,706 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:54,706 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:54,715 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:42:54,943 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 84 check-sat command(s) [2018-10-01 00:42:54,944 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:54,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:55,260 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:55,281 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:55,281 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167, 167] total 167 [2018-10-01 00:42:55,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-10-01 00:42:55,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-10-01 00:42:55,284 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:55,284 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 168 states. [2018-10-01 00:42:56,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:56,564 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2018-10-01 00:42:56,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-10-01 00:42:56,565 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 168 [2018-10-01 00:42:56,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:56,565 INFO L225 Difference]: With dead ends: 172 [2018-10-01 00:42:56,565 INFO L226 Difference]: Without dead ends: 170 [2018-10-01 00:42:56,565 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:42:56,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-10-01 00:42:56,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-10-01 00:42:56,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-10-01 00:42:56,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2018-10-01 00:42:56,568 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 168 [2018-10-01 00:42:56,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:56,568 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2018-10-01 00:42:56,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-10-01 00:42:56,568 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2018-10-01 00:42:56,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-01 00:42:56,569 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:56,569 INFO L375 BasicCegarLoop]: trace histogram [166, 1, 1, 1] [2018-10-01 00:42:56,569 INFO L423 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:56,569 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:56,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1817785887, now seen corresponding path program 166 times [2018-10-01 00:42:56,569 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:56,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:56,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:56,570 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:56,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 13861 backedges. 0 proven. 13861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:57,664 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:57,664 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:57,671 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:42:57,755 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:42:57,755 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:57,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:58,112 INFO L134 CoverageAnalysis]: Checked inductivity of 13861 backedges. 0 proven. 13861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:58,133 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:58,133 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168, 168] total 168 [2018-10-01 00:42:58,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-10-01 00:42:58,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-10-01 00:42:58,135 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:58,135 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 169 states. [2018-10-01 00:43:00,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:00,461 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-10-01 00:43:00,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-10-01 00:43:00,462 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 169 [2018-10-01 00:43:00,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:00,462 INFO L225 Difference]: With dead ends: 173 [2018-10-01 00:43:00,462 INFO L226 Difference]: Without dead ends: 171 [2018-10-01 00:43:00,462 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:43:00,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-01 00:43:00,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-01 00:43:00,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-01 00:43:00,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-01 00:43:00,465 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 169 [2018-10-01 00:43:00,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:00,465 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-01 00:43:00,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-10-01 00:43:00,465 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-01 00:43:00,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-01 00:43:00,465 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:00,465 INFO L375 BasicCegarLoop]: trace histogram [167, 1, 1, 1] [2018-10-01 00:43:00,466 INFO L423 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:00,466 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:00,466 INFO L82 PathProgramCache]: Analyzing trace with hash -516789624, now seen corresponding path program 167 times [2018-10-01 00:43:00,466 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:00,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:00,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:00,466 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:00,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:01,533 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:01,533 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:01,533 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:01,540 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:43:01,767 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 85 check-sat command(s) [2018-10-01 00:43:01,767 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:01,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:02,127 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:02,148 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:02,148 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169, 169] total 169 [2018-10-01 00:43:02,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-10-01 00:43:02,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-10-01 00:43:02,150 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:02,150 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 170 states. [2018-10-01 00:43:03,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:03,314 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2018-10-01 00:43:03,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-10-01 00:43:03,314 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 170 [2018-10-01 00:43:03,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:03,315 INFO L225 Difference]: With dead ends: 174 [2018-10-01 00:43:03,315 INFO L226 Difference]: Without dead ends: 172 [2018-10-01 00:43:03,315 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:43:03,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-10-01 00:43:03,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-10-01 00:43:03,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-10-01 00:43:03,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-10-01 00:43:03,317 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 170 [2018-10-01 00:43:03,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:03,317 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-10-01 00:43:03,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-10-01 00:43:03,317 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-10-01 00:43:03,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-01 00:43:03,318 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:03,318 INFO L375 BasicCegarLoop]: trace histogram [168, 1, 1, 1] [2018-10-01 00:43:03,318 INFO L423 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:03,318 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:03,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1159388865, now seen corresponding path program 168 times [2018-10-01 00:43:03,318 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:03,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:03,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:03,319 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:03,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:04,544 INFO L134 CoverageAnalysis]: Checked inductivity of 14196 backedges. 0 proven. 14196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:04,544 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:04,544 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:04,551 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:43:04,743 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-10-01 00:43:04,743 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:04,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:05,098 INFO L134 CoverageAnalysis]: Checked inductivity of 14196 backedges. 0 proven. 14196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:05,118 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:05,118 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170, 170] total 170 [2018-10-01 00:43:05,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-10-01 00:43:05,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-10-01 00:43:05,120 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:05,120 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 171 states. [2018-10-01 00:43:07,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:07,287 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-10-01 00:43:07,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-10-01 00:43:07,287 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 171 [2018-10-01 00:43:07,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:07,288 INFO L225 Difference]: With dead ends: 175 [2018-10-01 00:43:07,288 INFO L226 Difference]: Without dead ends: 173 [2018-10-01 00:43:07,288 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:43:07,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-01 00:43:07,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-10-01 00:43:07,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-01 00:43:07,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-10-01 00:43:07,290 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 171 [2018-10-01 00:43:07,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:07,291 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-10-01 00:43:07,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-10-01 00:43:07,291 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-10-01 00:43:07,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-01 00:43:07,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:07,291 INFO L375 BasicCegarLoop]: trace histogram [169, 1, 1, 1] [2018-10-01 00:43:07,291 INFO L423 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:07,291 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:07,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1581314472, now seen corresponding path program 169 times [2018-10-01 00:43:07,292 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:07,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:07,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:07,292 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:07,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:08,386 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:08,386 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:08,386 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:08,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:43:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:08,488 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:08,954 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:08,954 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171, 171] total 171 [2018-10-01 00:43:08,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-10-01 00:43:08,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-10-01 00:43:08,956 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:08,957 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 172 states. [2018-10-01 00:43:11,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:11,243 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions. [2018-10-01 00:43:11,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-10-01 00:43:11,243 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 172 [2018-10-01 00:43:11,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:11,243 INFO L225 Difference]: With dead ends: 176 [2018-10-01 00:43:11,244 INFO L226 Difference]: Without dead ends: 174 [2018-10-01 00:43:11,244 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:43:11,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-10-01 00:43:11,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-10-01 00:43:11,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-10-01 00:43:11,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-10-01 00:43:11,247 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 172 [2018-10-01 00:43:11,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:11,247 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-10-01 00:43:11,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-10-01 00:43:11,247 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-10-01 00:43:11,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-01 00:43:11,247 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:11,247 INFO L375 BasicCegarLoop]: trace histogram [170, 1, 1, 1] [2018-10-01 00:43:11,248 INFO L423 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:11,248 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:11,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1776106401, now seen corresponding path program 170 times [2018-10-01 00:43:11,248 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:11,248 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:11,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:11,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:43:11,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:12,370 INFO L134 CoverageAnalysis]: Checked inductivity of 14535 backedges. 0 proven. 14535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:12,370 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:12,370 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:12,378 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:43:12,468 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:43:12,469 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:12,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:12,839 INFO L134 CoverageAnalysis]: Checked inductivity of 14535 backedges. 0 proven. 14535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:12,859 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:12,859 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172, 172] total 172 [2018-10-01 00:43:12,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-10-01 00:43:12,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-10-01 00:43:12,862 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:12,862 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 173 states. [2018-10-01 00:43:14,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:14,175 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-01 00:43:14,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-10-01 00:43:14,175 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 173 [2018-10-01 00:43:14,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:14,175 INFO L225 Difference]: With dead ends: 177 [2018-10-01 00:43:14,176 INFO L226 Difference]: Without dead ends: 175 [2018-10-01 00:43:14,176 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:43:14,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-01 00:43:14,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-01 00:43:14,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-01 00:43:14,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-10-01 00:43:14,179 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 173 [2018-10-01 00:43:14,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:14,179 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-10-01 00:43:14,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-10-01 00:43:14,179 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-10-01 00:43:14,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-01 00:43:14,180 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:14,180 INFO L375 BasicCegarLoop]: trace histogram [171, 1, 1, 1] [2018-10-01 00:43:14,180 INFO L423 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:14,180 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:14,180 INFO L82 PathProgramCache]: Analyzing trace with hash -775278392, now seen corresponding path program 171 times [2018-10-01 00:43:14,180 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:14,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:14,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:14,181 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:14,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:15,296 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:15,296 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:15,304 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:43:15,509 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 87 check-sat command(s) [2018-10-01 00:43:15,509 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:15,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:15,866 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:15,888 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:15,888 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173, 173] total 173 [2018-10-01 00:43:15,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-10-01 00:43:15,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-10-01 00:43:15,890 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:15,890 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 174 states. [2018-10-01 00:43:17,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:17,291 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2018-10-01 00:43:17,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-10-01 00:43:17,291 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 174 [2018-10-01 00:43:17,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:17,292 INFO L225 Difference]: With dead ends: 178 [2018-10-01 00:43:17,292 INFO L226 Difference]: Without dead ends: 176 [2018-10-01 00:43:17,292 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:43:17,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-10-01 00:43:17,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-10-01 00:43:17,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-10-01 00:43:17,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2018-10-01 00:43:17,295 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 174 [2018-10-01 00:43:17,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:17,295 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2018-10-01 00:43:17,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-10-01 00:43:17,295 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2018-10-01 00:43:17,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-10-01 00:43:17,296 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:17,296 INFO L375 BasicCegarLoop]: trace histogram [172, 1, 1, 1] [2018-10-01 00:43:17,296 INFO L423 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:17,296 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:17,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1736171649, now seen corresponding path program 172 times [2018-10-01 00:43:17,296 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:17,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:17,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:17,297 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:17,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:18,424 INFO L134 CoverageAnalysis]: Checked inductivity of 14878 backedges. 0 proven. 14878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:18,424 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:18,424 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:18,432 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:43:18,521 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:43:18,521 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:18,525 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 14878 backedges. 0 proven. 14878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:19,054 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:19,054 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174, 174] total 174 [2018-10-01 00:43:19,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-10-01 00:43:19,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-10-01 00:43:19,057 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:19,057 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 175 states. [2018-10-01 00:43:21,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:21,340 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-10-01 00:43:21,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-10-01 00:43:21,341 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 175 [2018-10-01 00:43:21,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:21,341 INFO L225 Difference]: With dead ends: 179 [2018-10-01 00:43:21,341 INFO L226 Difference]: Without dead ends: 177 [2018-10-01 00:43:21,341 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:43:21,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-01 00:43:21,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-10-01 00:43:21,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-10-01 00:43:21,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-10-01 00:43:21,344 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 175 [2018-10-01 00:43:21,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:21,344 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-10-01 00:43:21,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-10-01 00:43:21,344 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-10-01 00:43:21,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-01 00:43:21,344 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:21,344 INFO L375 BasicCegarLoop]: trace histogram [173, 1, 1, 1] [2018-10-01 00:43:21,345 INFO L423 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:21,345 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:21,345 INFO L82 PathProgramCache]: Analyzing trace with hash -2013255704, now seen corresponding path program 173 times [2018-10-01 00:43:21,345 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:21,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:21,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:21,346 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:21,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:22,493 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:22,493 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:22,500 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:43:22,753 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 88 check-sat command(s) [2018-10-01 00:43:22,753 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:22,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:23,090 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:23,110 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:23,111 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175, 175] total 175 [2018-10-01 00:43:23,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-10-01 00:43:23,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-10-01 00:43:23,113 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:23,113 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 176 states. [2018-10-01 00:43:25,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:25,433 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2018-10-01 00:43:25,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-10-01 00:43:25,434 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 176 [2018-10-01 00:43:25,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:25,434 INFO L225 Difference]: With dead ends: 180 [2018-10-01 00:43:25,434 INFO L226 Difference]: Without dead ends: 178 [2018-10-01 00:43:25,435 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:43:25,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-10-01 00:43:25,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-10-01 00:43:25,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-10-01 00:43:25,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-10-01 00:43:25,437 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 176 [2018-10-01 00:43:25,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:25,437 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-10-01 00:43:25,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-10-01 00:43:25,437 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-10-01 00:43:25,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-01 00:43:25,438 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:25,438 INFO L375 BasicCegarLoop]: trace histogram [174, 1, 1, 1] [2018-10-01 00:43:25,438 INFO L423 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:25,438 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:25,438 INFO L82 PathProgramCache]: Analyzing trace with hash 2013580641, now seen corresponding path program 174 times [2018-10-01 00:43:25,438 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:25,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:25,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:25,439 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:25,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:26,642 INFO L134 CoverageAnalysis]: Checked inductivity of 15225 backedges. 0 proven. 15225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:26,642 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:26,642 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:26,651 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:43:26,891 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 88 check-sat command(s) [2018-10-01 00:43:26,891 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:26,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:27,221 INFO L134 CoverageAnalysis]: Checked inductivity of 15225 backedges. 0 proven. 15225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:27,243 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:27,244 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176, 176] total 176 [2018-10-01 00:43:27,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-10-01 00:43:27,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-10-01 00:43:27,246 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:27,247 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 177 states. [2018-10-01 00:43:29,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:29,741 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-10-01 00:43:29,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-10-01 00:43:29,741 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 177 [2018-10-01 00:43:29,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:29,742 INFO L225 Difference]: With dead ends: 181 [2018-10-01 00:43:29,742 INFO L226 Difference]: Without dead ends: 179 [2018-10-01 00:43:29,742 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:43:29,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-01 00:43:29,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-01 00:43:29,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-01 00:43:29,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-01 00:43:29,745 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 177 [2018-10-01 00:43:29,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:29,745 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-01 00:43:29,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-10-01 00:43:29,745 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-01 00:43:29,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-01 00:43:29,745 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:29,745 INFO L375 BasicCegarLoop]: trace histogram [175, 1, 1, 1] [2018-10-01 00:43:29,746 INFO L423 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:29,746 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:29,746 INFO L82 PathProgramCache]: Analyzing trace with hash -2003511544, now seen corresponding path program 175 times [2018-10-01 00:43:29,746 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:29,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:29,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:29,746 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:29,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:30,924 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:30,925 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:30,925 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:30,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:43:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:31,023 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:31,353 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:31,373 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:31,373 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177, 177] total 177 [2018-10-01 00:43:31,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-10-01 00:43:31,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-10-01 00:43:31,376 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:31,376 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 178 states. [2018-10-01 00:43:33,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:33,920 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2018-10-01 00:43:33,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-10-01 00:43:33,920 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 178 [2018-10-01 00:43:33,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:33,920 INFO L225 Difference]: With dead ends: 182 [2018-10-01 00:43:33,921 INFO L226 Difference]: Without dead ends: 180 [2018-10-01 00:43:33,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:43:33,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-10-01 00:43:33,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-10-01 00:43:33,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-10-01 00:43:33,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2018-10-01 00:43:33,923 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 178 [2018-10-01 00:43:33,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:33,923 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2018-10-01 00:43:33,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-10-01 00:43:33,923 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2018-10-01 00:43:33,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-01 00:43:33,924 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:33,924 INFO L375 BasicCegarLoop]: trace histogram [176, 1, 1, 1] [2018-10-01 00:43:33,924 INFO L423 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:33,924 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:33,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1979317695, now seen corresponding path program 176 times [2018-10-01 00:43:33,924 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:33,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:33,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:33,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:43:33,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:35,305 INFO L134 CoverageAnalysis]: Checked inductivity of 15576 backedges. 0 proven. 15576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:35,306 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:35,306 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:35,312 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:43:35,401 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:43:35,401 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:35,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:35,745 INFO L134 CoverageAnalysis]: Checked inductivity of 15576 backedges. 0 proven. 15576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:35,766 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:35,766 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178, 178] total 178 [2018-10-01 00:43:35,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-10-01 00:43:35,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-10-01 00:43:35,770 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:35,770 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 179 states. [2018-10-01 00:43:37,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:37,747 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-10-01 00:43:37,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-10-01 00:43:37,750 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 179 [2018-10-01 00:43:37,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:37,751 INFO L225 Difference]: With dead ends: 183 [2018-10-01 00:43:37,751 INFO L226 Difference]: Without dead ends: 181 [2018-10-01 00:43:37,751 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:43:37,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-01 00:43:37,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-01 00:43:37,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-01 00:43:37,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-10-01 00:43:37,753 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 179 [2018-10-01 00:43:37,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:37,754 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-10-01 00:43:37,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-10-01 00:43:37,754 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-10-01 00:43:37,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-01 00:43:37,754 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:37,754 INFO L375 BasicCegarLoop]: trace histogram [177, 1, 1, 1] [2018-10-01 00:43:37,754 INFO L423 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:37,754 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:37,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1229308376, now seen corresponding path program 177 times [2018-10-01 00:43:37,755 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:37,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:37,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:37,755 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:37,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:38,923 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:38,923 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:38,924 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:38,932 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:43:39,158 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 90 check-sat command(s) [2018-10-01 00:43:39,158 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:39,163 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:39,678 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:39,700 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:39,700 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179, 179] total 179 [2018-10-01 00:43:39,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-10-01 00:43:39,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-10-01 00:43:39,702 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:39,702 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 180 states. [2018-10-01 00:43:42,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:42,008 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2018-10-01 00:43:42,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-10-01 00:43:42,009 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 180 [2018-10-01 00:43:42,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:42,009 INFO L225 Difference]: With dead ends: 184 [2018-10-01 00:43:42,009 INFO L226 Difference]: Without dead ends: 182 [2018-10-01 00:43:42,009 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:43:42,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-10-01 00:43:42,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-10-01 00:43:42,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-10-01 00:43:42,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2018-10-01 00:43:42,012 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 180 [2018-10-01 00:43:42,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:42,012 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2018-10-01 00:43:42,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-10-01 00:43:42,012 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2018-10-01 00:43:42,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-01 00:43:42,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:42,013 INFO L375 BasicCegarLoop]: trace histogram [178, 1, 1, 1] [2018-10-01 00:43:42,013 INFO L423 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:42,013 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:42,013 INFO L82 PathProgramCache]: Analyzing trace with hash 546144033, now seen corresponding path program 178 times [2018-10-01 00:43:42,013 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:42,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:42,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:42,014 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:42,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:43,205 INFO L134 CoverageAnalysis]: Checked inductivity of 15931 backedges. 0 proven. 15931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:43,205 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:43,205 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:43,212 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:43:43,304 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:43:43,304 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:43,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:43,648 INFO L134 CoverageAnalysis]: Checked inductivity of 15931 backedges. 0 proven. 15931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:43,669 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:43,669 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180, 180] total 180 [2018-10-01 00:43:43,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-10-01 00:43:43,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-10-01 00:43:43,672 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:43,672 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 181 states. [2018-10-01 00:43:46,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:46,125 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-01 00:43:46,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-10-01 00:43:46,125 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 181 [2018-10-01 00:43:46,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:46,126 INFO L225 Difference]: With dead ends: 185 [2018-10-01 00:43:46,126 INFO L226 Difference]: Without dead ends: 183 [2018-10-01 00:43:46,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:43:46,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-01 00:43:46,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-01 00:43:46,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-01 00:43:46,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-10-01 00:43:46,128 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 181 [2018-10-01 00:43:46,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:46,128 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-10-01 00:43:46,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-10-01 00:43:46,128 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-10-01 00:43:46,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-01 00:43:46,129 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:46,129 INFO L375 BasicCegarLoop]: trace histogram [179, 1, 1, 1] [2018-10-01 00:43:46,129 INFO L423 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:46,129 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:46,129 INFO L82 PathProgramCache]: Analyzing trace with hash -249406136, now seen corresponding path program 179 times [2018-10-01 00:43:46,129 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:46,129 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:46,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:46,130 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:46,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:47,326 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:47,327 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:47,327 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:47,334 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:43:47,580 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 91 check-sat command(s) [2018-10-01 00:43:47,580 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:47,588 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:47,938 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:47,959 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:47,960 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181, 181] total 181 [2018-10-01 00:43:47,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-10-01 00:43:47,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-10-01 00:43:47,964 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:47,964 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 182 states. [2018-10-01 00:43:50,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:50,224 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2018-10-01 00:43:50,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-10-01 00:43:50,224 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 182 [2018-10-01 00:43:50,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:50,225 INFO L225 Difference]: With dead ends: 186 [2018-10-01 00:43:50,225 INFO L226 Difference]: Without dead ends: 184 [2018-10-01 00:43:50,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:43:50,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-10-01 00:43:50,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-10-01 00:43:50,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-01 00:43:50,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-10-01 00:43:50,228 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 182 [2018-10-01 00:43:50,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:50,229 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-10-01 00:43:50,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-10-01 00:43:50,229 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-10-01 00:43:50,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-01 00:43:50,230 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:50,230 INFO L375 BasicCegarLoop]: trace histogram [180, 1, 1, 1] [2018-10-01 00:43:50,230 INFO L423 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:50,230 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:50,230 INFO L82 PathProgramCache]: Analyzing trace with hash 858342401, now seen corresponding path program 180 times [2018-10-01 00:43:50,230 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:50,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:50,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:50,231 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:50,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 16290 backedges. 0 proven. 16290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:51,475 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:51,475 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:51,483 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:43:51,696 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-10-01 00:43:51,697 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:51,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:52,044 INFO L134 CoverageAnalysis]: Checked inductivity of 16290 backedges. 0 proven. 16290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:52,064 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:52,064 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182, 182] total 182 [2018-10-01 00:43:52,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-10-01 00:43:52,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-10-01 00:43:52,067 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:52,067 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 183 states. [2018-10-01 00:43:54,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:54,956 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-10-01 00:43:54,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-10-01 00:43:54,956 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 183 [2018-10-01 00:43:54,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:54,956 INFO L225 Difference]: With dead ends: 187 [2018-10-01 00:43:54,957 INFO L226 Difference]: Without dead ends: 185 [2018-10-01 00:43:54,957 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:43:54,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-01 00:43:54,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-10-01 00:43:54,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-01 00:43:54,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-10-01 00:43:54,960 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 183 [2018-10-01 00:43:54,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:54,960 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-10-01 00:43:54,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-10-01 00:43:54,960 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-10-01 00:43:54,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-01 00:43:54,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:54,961 INFO L375 BasicCegarLoop]: trace histogram [181, 1, 1, 1] [2018-10-01 00:43:54,961 INFO L423 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:54,962 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:54,962 INFO L82 PathProgramCache]: Analyzing trace with hash 838808680, now seen corresponding path program 181 times [2018-10-01 00:43:54,962 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:54,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:54,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:54,963 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:54,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:56,265 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:56,265 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:56,265 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:56,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:43:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:56,366 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:56,781 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:56,781 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183, 183] total 183 [2018-10-01 00:43:56,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-10-01 00:43:56,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-10-01 00:43:56,784 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:56,784 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 184 states. [2018-10-01 00:43:59,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:59,344 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions. [2018-10-01 00:43:59,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-10-01 00:43:59,345 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 184 [2018-10-01 00:43:59,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:59,345 INFO L225 Difference]: With dead ends: 188 [2018-10-01 00:43:59,345 INFO L226 Difference]: Without dead ends: 186 [2018-10-01 00:43:59,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:43:59,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-10-01 00:43:59,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-10-01 00:43:59,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-10-01 00:43:59,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2018-10-01 00:43:59,348 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 184 [2018-10-01 00:43:59,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:59,348 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2018-10-01 00:43:59,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-10-01 00:43:59,348 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2018-10-01 00:43:59,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-01 00:43:59,349 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:59,349 INFO L375 BasicCegarLoop]: trace histogram [182, 1, 1, 1] [2018-10-01 00:43:59,349 INFO L423 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:59,349 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:59,349 INFO L82 PathProgramCache]: Analyzing trace with hash 233263329, now seen corresponding path program 182 times [2018-10-01 00:43:59,349 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:59,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:59,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:59,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:43:59,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:00,792 INFO L134 CoverageAnalysis]: Checked inductivity of 16653 backedges. 0 proven. 16653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:00,792 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:00,792 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:00,799 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:44:00,889 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:44:00,889 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:00,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 16653 backedges. 0 proven. 16653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:01,272 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:01,273 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184, 184] total 184 [2018-10-01 00:44:01,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-10-01 00:44:01,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-10-01 00:44:01,275 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:01,275 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 185 states. [2018-10-01 00:44:02,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:02,975 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-10-01 00:44:02,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-10-01 00:44:02,975 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 185 [2018-10-01 00:44:02,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:02,975 INFO L225 Difference]: With dead ends: 189 [2018-10-01 00:44:02,976 INFO L226 Difference]: Without dead ends: 187 [2018-10-01 00:44:02,976 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:44:02,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-01 00:44:02,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-01 00:44:02,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-01 00:44:02,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-01 00:44:02,978 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 185 [2018-10-01 00:44:02,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:02,978 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-01 00:44:02,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-10-01 00:44:02,978 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-01 00:44:02,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-01 00:44:02,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:02,979 INFO L375 BasicCegarLoop]: trace histogram [183, 1, 1, 1] [2018-10-01 00:44:02,979 INFO L423 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:02,979 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:02,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1358773368, now seen corresponding path program 183 times [2018-10-01 00:44:02,979 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:02,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:02,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:02,980 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:02,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:04,277 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:04,277 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:04,277 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:04,284 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:44:04,517 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 93 check-sat command(s) [2018-10-01 00:44:04,517 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:04,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:04,969 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:04,990 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:04,990 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185, 185] total 185 [2018-10-01 00:44:04,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-10-01 00:44:04,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-10-01 00:44:04,993 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:04,993 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 186 states. [2018-10-01 00:44:06,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:06,530 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2018-10-01 00:44:06,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-10-01 00:44:06,531 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 186 [2018-10-01 00:44:06,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:06,531 INFO L225 Difference]: With dead ends: 190 [2018-10-01 00:44:06,531 INFO L226 Difference]: Without dead ends: 188 [2018-10-01 00:44:06,532 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:44:06,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-10-01 00:44:06,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-10-01 00:44:06,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-10-01 00:44:06,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2018-10-01 00:44:06,534 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 186 [2018-10-01 00:44:06,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:06,534 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2018-10-01 00:44:06,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-10-01 00:44:06,534 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2018-10-01 00:44:06,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-01 00:44:06,535 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:06,535 INFO L375 BasicCegarLoop]: trace histogram [184, 1, 1, 1] [2018-10-01 00:44:06,535 INFO L423 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:06,535 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:06,535 INFO L82 PathProgramCache]: Analyzing trace with hash 827696577, now seen corresponding path program 184 times [2018-10-01 00:44:06,535 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:06,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:06,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:06,536 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:06,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:07,821 INFO L134 CoverageAnalysis]: Checked inductivity of 17020 backedges. 0 proven. 17020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:07,822 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:07,822 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:07,832 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:44:07,925 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:44:07,925 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:07,930 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:08,283 INFO L134 CoverageAnalysis]: Checked inductivity of 17020 backedges. 0 proven. 17020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:08,303 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:08,303 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186, 186] total 186 [2018-10-01 00:44:08,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-10-01 00:44:08,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-10-01 00:44:08,307 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:08,307 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 187 states. [2018-10-01 00:44:10,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:10,610 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-10-01 00:44:10,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-10-01 00:44:10,611 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 187 [2018-10-01 00:44:10,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:10,611 INFO L225 Difference]: With dead ends: 191 [2018-10-01 00:44:10,611 INFO L226 Difference]: Without dead ends: 189 [2018-10-01 00:44:10,612 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:44:10,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-01 00:44:10,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-10-01 00:44:10,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-01 00:44:10,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-10-01 00:44:10,615 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 187 [2018-10-01 00:44:10,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:10,615 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-10-01 00:44:10,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-10-01 00:44:10,616 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-10-01 00:44:10,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-01 00:44:10,616 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:10,616 INFO L375 BasicCegarLoop]: trace histogram [185, 1, 1, 1] [2018-10-01 00:44:10,616 INFO L423 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:10,616 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:10,616 INFO L82 PathProgramCache]: Analyzing trace with hash -111211864, now seen corresponding path program 185 times [2018-10-01 00:44:10,617 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:10,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:10,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:10,617 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:10,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:11,868 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:11,869 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:11,869 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:11,876 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:44:12,137 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 94 check-sat command(s) [2018-10-01 00:44:12,137 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:12,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:12,504 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:12,524 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:12,524 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187, 187] total 187 [2018-10-01 00:44:12,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-10-01 00:44:12,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-10-01 00:44:12,527 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:12,527 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 188 states. [2018-10-01 00:44:14,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:14,937 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2018-10-01 00:44:14,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-10-01 00:44:14,937 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 188 [2018-10-01 00:44:14,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:14,938 INFO L225 Difference]: With dead ends: 192 [2018-10-01 00:44:14,938 INFO L226 Difference]: Without dead ends: 190 [2018-10-01 00:44:14,938 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:44:14,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-10-01 00:44:14,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-10-01 00:44:14,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-10-01 00:44:14,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2018-10-01 00:44:14,940 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 188 [2018-10-01 00:44:14,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:14,940 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2018-10-01 00:44:14,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-10-01 00:44:14,941 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2018-10-01 00:44:14,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-01 00:44:14,941 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:14,941 INFO L375 BasicCegarLoop]: trace histogram [186, 1, 1, 1] [2018-10-01 00:44:14,941 INFO L423 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:14,941 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:14,941 INFO L82 PathProgramCache]: Analyzing trace with hash 847397537, now seen corresponding path program 186 times [2018-10-01 00:44:14,942 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:14,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:14,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:14,942 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:14,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:16,377 INFO L134 CoverageAnalysis]: Checked inductivity of 17391 backedges. 0 proven. 17391 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:16,377 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:16,377 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:16,384 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:44:16,611 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 94 check-sat command(s) [2018-10-01 00:44:16,611 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:16,617 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:16,974 INFO L134 CoverageAnalysis]: Checked inductivity of 17391 backedges. 0 proven. 17391 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:16,994 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:16,995 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188, 188] total 188 [2018-10-01 00:44:16,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-10-01 00:44:16,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-10-01 00:44:16,997 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:16,997 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 189 states. [2018-10-01 00:44:18,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:18,400 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-10-01 00:44:18,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-10-01 00:44:18,401 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 189 [2018-10-01 00:44:18,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:18,401 INFO L225 Difference]: With dead ends: 193 [2018-10-01 00:44:18,401 INFO L226 Difference]: Without dead ends: 191 [2018-10-01 00:44:18,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:44:18,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-01 00:44:18,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-01 00:44:18,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-01 00:44:18,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-10-01 00:44:18,404 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 189 [2018-10-01 00:44:18,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:18,404 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-10-01 00:44:18,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-10-01 00:44:18,404 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-10-01 00:44:18,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-01 00:44:18,405 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:18,405 INFO L375 BasicCegarLoop]: trace histogram [187, 1, 1, 1] [2018-10-01 00:44:18,405 INFO L423 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:18,405 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:18,405 INFO L82 PathProgramCache]: Analyzing trace with hash 499517896, now seen corresponding path program 187 times [2018-10-01 00:44:18,405 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:18,405 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:18,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:18,406 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:18,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:19,714 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:19,714 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:19,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:44:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:19,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:20,232 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:20,253 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:20,254 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189, 189] total 189 [2018-10-01 00:44:20,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-10-01 00:44:20,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-10-01 00:44:20,256 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:20,256 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 190 states. [2018-10-01 00:44:23,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:23,144 INFO L93 Difference]: Finished difference Result 194 states and 194 transitions. [2018-10-01 00:44:23,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-10-01 00:44:23,144 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 190 [2018-10-01 00:44:23,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:23,144 INFO L225 Difference]: With dead ends: 194 [2018-10-01 00:44:23,144 INFO L226 Difference]: Without dead ends: 192 [2018-10-01 00:44:23,145 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:44:23,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-10-01 00:44:23,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-10-01 00:44:23,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-10-01 00:44:23,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2018-10-01 00:44:23,147 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 190 [2018-10-01 00:44:23,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:23,147 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2018-10-01 00:44:23,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-10-01 00:44:23,147 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2018-10-01 00:44:23,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-01 00:44:23,148 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:23,148 INFO L375 BasicCegarLoop]: trace histogram [188, 1, 1, 1] [2018-10-01 00:44:23,148 INFO L423 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:23,148 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:23,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1694816383, now seen corresponding path program 188 times [2018-10-01 00:44:23,148 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:23,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:23,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:23,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:44:23,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:24,462 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:24,463 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:24,463 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:24,471 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:44:24,585 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:44:24,585 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:24,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:24,954 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:24,974 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:24,974 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190, 190] total 190 [2018-10-01 00:44:24,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-10-01 00:44:24,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-10-01 00:44:24,977 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:24,977 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand 191 states. [2018-10-01 00:44:26,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:26,813 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-01 00:44:26,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-10-01 00:44:26,814 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 191 [2018-10-01 00:44:26,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:26,814 INFO L225 Difference]: With dead ends: 195 [2018-10-01 00:44:26,815 INFO L226 Difference]: Without dead ends: 193 [2018-10-01 00:44:26,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:44:26,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-01 00:44:26,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-10-01 00:44:26,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-01 00:44:26,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-10-01 00:44:26,818 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 191 [2018-10-01 00:44:26,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:26,818 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-10-01 00:44:26,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-10-01 00:44:26,819 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-10-01 00:44:26,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-01 00:44:26,819 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:26,819 INFO L375 BasicCegarLoop]: trace histogram [189, 1, 1, 1] [2018-10-01 00:44:26,820 INFO L423 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:26,820 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:26,820 INFO L82 PathProgramCache]: Analyzing trace with hash -999702296, now seen corresponding path program 189 times [2018-10-01 00:44:26,820 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:26,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:26,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:26,821 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:26,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:28,353 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:28,353 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:28,353 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:28,362 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:44:28,606 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 96 check-sat command(s) [2018-10-01 00:44:28,606 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:28,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:28,968 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:28,990 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:28,990 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191] total 191 [2018-10-01 00:44:28,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-10-01 00:44:28,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-10-01 00:44:28,993 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:28,993 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 192 states. [2018-10-01 00:44:31,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:31,341 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2018-10-01 00:44:31,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-10-01 00:44:31,341 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 192 [2018-10-01 00:44:31,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:31,341 INFO L225 Difference]: With dead ends: 196 [2018-10-01 00:44:31,342 INFO L226 Difference]: Without dead ends: 194 [2018-10-01 00:44:31,342 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:44:31,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-10-01 00:44:31,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-10-01 00:44:31,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-10-01 00:44:31,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2018-10-01 00:44:31,344 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 192 [2018-10-01 00:44:31,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:31,344 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2018-10-01 00:44:31,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-10-01 00:44:31,345 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2018-10-01 00:44:31,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-01 00:44:31,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:31,345 INFO L375 BasicCegarLoop]: trace histogram [190, 1, 1, 1] [2018-10-01 00:44:31,345 INFO L423 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:31,345 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:31,346 INFO L82 PathProgramCache]: Analyzing trace with hash -926002079, now seen corresponding path program 190 times [2018-10-01 00:44:31,346 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:31,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:31,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:31,346 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:31,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:32,684 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:32,685 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:32,685 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:32,692 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:44:32,790 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:44:32,790 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:32,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:33,166 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:33,187 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:33,187 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192] total 192 [2018-10-01 00:44:33,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-10-01 00:44:33,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-10-01 00:44:33,190 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:33,190 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 193 states. [2018-10-01 00:44:34,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:34,936 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-10-01 00:44:34,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-10-01 00:44:34,936 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 193 [2018-10-01 00:44:34,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:34,937 INFO L225 Difference]: With dead ends: 197 [2018-10-01 00:44:34,937 INFO L226 Difference]: Without dead ends: 195 [2018-10-01 00:44:34,937 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:44:34,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-01 00:44:34,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-01 00:44:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-01 00:44:34,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-10-01 00:44:34,940 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 193 [2018-10-01 00:44:34,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:34,940 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-10-01 00:44:34,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-10-01 00:44:34,941 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-10-01 00:44:34,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-01 00:44:34,941 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:34,941 INFO L375 BasicCegarLoop]: trace histogram [191, 1, 1, 1] [2018-10-01 00:44:34,941 INFO L423 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:34,941 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:34,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1358704648, now seen corresponding path program 191 times [2018-10-01 00:44:34,942 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:34,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:34,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:34,942 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:34,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:36,381 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:36,382 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:36,382 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:36,395 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:44:36,673 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 97 check-sat command(s) [2018-10-01 00:44:36,674 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:36,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:37,065 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:37,085 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:37,085 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193] total 193 [2018-10-01 00:44:37,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-10-01 00:44:37,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-10-01 00:44:37,088 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:37,088 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 194 states. [2018-10-01 00:44:40,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:40,053 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2018-10-01 00:44:40,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-10-01 00:44:40,054 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 194 [2018-10-01 00:44:40,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:40,054 INFO L225 Difference]: With dead ends: 198 [2018-10-01 00:44:40,054 INFO L226 Difference]: Without dead ends: 196 [2018-10-01 00:44:40,055 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:44:40,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-10-01 00:44:40,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-10-01 00:44:40,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-10-01 00:44:40,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2018-10-01 00:44:40,057 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 194 [2018-10-01 00:44:40,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:40,057 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2018-10-01 00:44:40,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-10-01 00:44:40,058 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2018-10-01 00:44:40,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-01 00:44:40,058 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:40,059 INFO L375 BasicCegarLoop]: trace histogram [192, 1, 1, 1] [2018-10-01 00:44:40,059 INFO L423 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:40,059 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:40,059 INFO L82 PathProgramCache]: Analyzing trace with hash -829830847, now seen corresponding path program 192 times [2018-10-01 00:44:40,059 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:40,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:40,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:40,060 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:40,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:41,633 INFO L134 CoverageAnalysis]: Checked inductivity of 18528 backedges. 0 proven. 18528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:41,634 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:41,634 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:41,647 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:44:41,888 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-10-01 00:44:41,889 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:41,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:42,298 INFO L134 CoverageAnalysis]: Checked inductivity of 18528 backedges. 0 proven. 18528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:42,318 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:42,319 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194, 194] total 194 [2018-10-01 00:44:42,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-10-01 00:44:42,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-10-01 00:44:42,322 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:42,322 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 195 states. [2018-10-01 00:44:44,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:44,037 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-10-01 00:44:44,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-10-01 00:44:44,038 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 195 [2018-10-01 00:44:44,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:44,038 INFO L225 Difference]: With dead ends: 199 [2018-10-01 00:44:44,038 INFO L226 Difference]: Without dead ends: 197 [2018-10-01 00:44:44,038 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:44:44,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-10-01 00:44:44,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-10-01 00:44:44,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-01 00:44:44,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-01 00:44:44,042 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 195 [2018-10-01 00:44:44,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:44,042 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-01 00:44:44,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-10-01 00:44:44,042 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-01 00:44:44,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-01 00:44:44,043 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:44,043 INFO L375 BasicCegarLoop]: trace histogram [193, 1, 1, 1] [2018-10-01 00:44:44,043 INFO L423 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:44,043 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:44,043 INFO L82 PathProgramCache]: Analyzing trace with hash 45045544, now seen corresponding path program 193 times [2018-10-01 00:44:44,043 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:44,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:44,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:44,044 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:44,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:45,400 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:45,400 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:45,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:44:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:45,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:46,046 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:46,067 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:46,067 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195, 195] total 195 [2018-10-01 00:44:46,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-10-01 00:44:46,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-10-01 00:44:46,070 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:46,070 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 196 states. [2018-10-01 00:44:49,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:49,230 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2018-10-01 00:44:49,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-10-01 00:44:49,231 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 196 [2018-10-01 00:44:49,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:49,231 INFO L225 Difference]: With dead ends: 200 [2018-10-01 00:44:49,231 INFO L226 Difference]: Without dead ends: 198 [2018-10-01 00:44:49,231 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:44:49,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-10-01 00:44:49,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2018-10-01 00:44:49,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-10-01 00:44:49,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-10-01 00:44:49,234 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 196 [2018-10-01 00:44:49,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:49,235 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-10-01 00:44:49,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-10-01 00:44:49,235 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-10-01 00:44:49,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-01 00:44:49,236 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:49,237 INFO L375 BasicCegarLoop]: trace histogram [194, 1, 1, 1] [2018-10-01 00:44:49,237 INFO L423 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:49,237 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:49,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1396409889, now seen corresponding path program 194 times [2018-10-01 00:44:49,237 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:49,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:49,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:49,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:44:49,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:50,934 INFO L134 CoverageAnalysis]: Checked inductivity of 18915 backedges. 0 proven. 18915 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:50,934 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:50,935 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:50,943 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:44:51,044 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:44:51,044 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:51,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:51,469 INFO L134 CoverageAnalysis]: Checked inductivity of 18915 backedges. 0 proven. 18915 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:51,491 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:51,491 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196, 196] total 196 [2018-10-01 00:44:51,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-10-01 00:44:51,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-10-01 00:44:51,494 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:51,494 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 197 states. [2018-10-01 00:44:54,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:54,013 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-10-01 00:44:54,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-10-01 00:44:54,013 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 197 [2018-10-01 00:44:54,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:54,014 INFO L225 Difference]: With dead ends: 201 [2018-10-01 00:44:54,014 INFO L226 Difference]: Without dead ends: 199 [2018-10-01 00:44:54,014 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:44:54,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-01 00:44:54,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-01 00:44:54,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-01 00:44:54,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-10-01 00:44:54,016 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 197 [2018-10-01 00:44:54,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:54,016 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-10-01 00:44:54,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-10-01 00:44:54,017 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-10-01 00:44:54,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-01 00:44:54,017 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:54,017 INFO L375 BasicCegarLoop]: trace histogram [195, 1, 1, 1] [2018-10-01 00:44:54,017 INFO L423 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:54,017 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:54,018 INFO L82 PathProgramCache]: Analyzing trace with hash 339031624, now seen corresponding path program 195 times [2018-10-01 00:44:54,018 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:54,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:54,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:54,018 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:54,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:55,386 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:55,386 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:55,386 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:55,394 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:44:55,647 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 99 check-sat command(s) [2018-10-01 00:44:55,647 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:55,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:56,116 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:56,136 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:56,136 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197, 197] total 197 [2018-10-01 00:44:56,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-10-01 00:44:56,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-10-01 00:44:56,139 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:56,139 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 198 states. [2018-10-01 00:44:58,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:58,194 INFO L93 Difference]: Finished difference Result 202 states and 202 transitions. [2018-10-01 00:44:58,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-10-01 00:44:58,194 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 198 [2018-10-01 00:44:58,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:58,195 INFO L225 Difference]: With dead ends: 202 [2018-10-01 00:44:58,195 INFO L226 Difference]: Without dead ends: 200 [2018-10-01 00:44:58,195 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:44:58,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-10-01 00:44:58,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-10-01 00:44:58,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-10-01 00:44:58,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-10-01 00:44:58,198 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 198 [2018-10-01 00:44:58,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:58,198 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-10-01 00:44:58,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-10-01 00:44:58,198 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-10-01 00:44:58,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-01 00:44:58,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:58,199 INFO L375 BasicCegarLoop]: trace histogram [196, 1, 1, 1] [2018-10-01 00:44:58,199 INFO L423 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:58,199 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:58,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1920043777, now seen corresponding path program 196 times [2018-10-01 00:44:58,199 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:58,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:58,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:58,200 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:58,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:59,598 INFO L134 CoverageAnalysis]: Checked inductivity of 19306 backedges. 0 proven. 19306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:59,598 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:59,598 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:59,608 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:44:59,711 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:44:59,711 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:59,716 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 19306 backedges. 0 proven. 19306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:00,118 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:00,118 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198, 198] total 198 [2018-10-01 00:45:00,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-10-01 00:45:00,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-10-01 00:45:00,122 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:00,122 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 199 states. [2018-10-01 00:45:02,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:02,547 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-10-01 00:45:02,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-10-01 00:45:02,547 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 199 [2018-10-01 00:45:02,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:02,548 INFO L225 Difference]: With dead ends: 203 [2018-10-01 00:45:02,548 INFO L226 Difference]: Without dead ends: 201 [2018-10-01 00:45:02,548 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:45:02,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-01 00:45:02,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-10-01 00:45:02,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-10-01 00:45:02,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-10-01 00:45:02,551 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 199 [2018-10-01 00:45:02,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:02,552 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-10-01 00:45:02,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-10-01 00:45:02,552 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-10-01 00:45:02,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-01 00:45:02,553 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:02,553 INFO L375 BasicCegarLoop]: trace histogram [197, 1, 1, 1] [2018-10-01 00:45:02,553 INFO L423 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:02,553 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:02,553 INFO L82 PathProgramCache]: Analyzing trace with hash -608187032, now seen corresponding path program 197 times [2018-10-01 00:45:02,554 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:02,554 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:02,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:02,554 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:02,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:04,103 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:04,103 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:04,111 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:45:04,400 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 100 check-sat command(s) [2018-10-01 00:45:04,400 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:04,409 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:04,787 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:04,808 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:04,809 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199, 199] total 199 [2018-10-01 00:45:04,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-10-01 00:45:04,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-10-01 00:45:04,811 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:04,811 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 200 states. [2018-10-01 00:45:08,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:08,026 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2018-10-01 00:45:08,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-10-01 00:45:08,026 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 200 [2018-10-01 00:45:08,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:08,027 INFO L225 Difference]: With dead ends: 204 [2018-10-01 00:45:08,027 INFO L226 Difference]: Without dead ends: 202 [2018-10-01 00:45:08,027 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:45:08,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-10-01 00:45:08,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-10-01 00:45:08,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-10-01 00:45:08,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-10-01 00:45:08,029 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 200 [2018-10-01 00:45:08,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:08,030 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-10-01 00:45:08,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-10-01 00:45:08,030 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-10-01 00:45:08,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-01 00:45:08,030 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:08,030 INFO L375 BasicCegarLoop]: trace histogram [198, 1, 1, 1] [2018-10-01 00:45:08,031 INFO L423 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:08,031 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:08,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1673930783, now seen corresponding path program 198 times [2018-10-01 00:45:08,031 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:08,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:08,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:08,031 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:08,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:09,431 INFO L134 CoverageAnalysis]: Checked inductivity of 19701 backedges. 0 proven. 19701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:09,431 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:09,432 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:09,439 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:45:09,685 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 100 check-sat command(s) [2018-10-01 00:45:09,685 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:09,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:10,113 INFO L134 CoverageAnalysis]: Checked inductivity of 19701 backedges. 0 proven. 19701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:10,134 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:10,134 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200, 200] total 200 [2018-10-01 00:45:10,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-10-01 00:45:10,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-10-01 00:45:10,136 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:10,137 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 201 states. [2018-10-01 00:45:12,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:12,825 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-10-01 00:45:12,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-10-01 00:45:12,825 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 201 [2018-10-01 00:45:12,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:12,826 INFO L225 Difference]: With dead ends: 205 [2018-10-01 00:45:12,826 INFO L226 Difference]: Without dead ends: 203 [2018-10-01 00:45:12,826 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:45:12,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-01 00:45:12,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-01 00:45:12,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-01 00:45:12,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-10-01 00:45:12,829 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 201 [2018-10-01 00:45:12,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:12,829 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-10-01 00:45:12,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-10-01 00:45:12,829 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-10-01 00:45:12,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-01 00:45:12,830 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:12,830 INFO L375 BasicCegarLoop]: trace histogram [199, 1, 1, 1] [2018-10-01 00:45:12,830 INFO L423 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:12,830 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:12,830 INFO L82 PathProgramCache]: Analyzing trace with hash -352248696, now seen corresponding path program 199 times [2018-10-01 00:45:12,830 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:12,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:12,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:12,831 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:12,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:14,300 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:14,301 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:14,301 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:14,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:45:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:14,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:14,810 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:14,830 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:14,830 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201, 201] total 201 [2018-10-01 00:45:14,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-10-01 00:45:14,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-10-01 00:45:14,833 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:14,833 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 202 states. [2018-10-01 00:45:16,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:16,744 INFO L93 Difference]: Finished difference Result 206 states and 206 transitions. [2018-10-01 00:45:16,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-10-01 00:45:16,744 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 202 [2018-10-01 00:45:16,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:16,745 INFO L225 Difference]: With dead ends: 206 [2018-10-01 00:45:16,745 INFO L226 Difference]: Without dead ends: 204 [2018-10-01 00:45:16,745 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:45:16,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-10-01 00:45:16,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-10-01 00:45:16,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-10-01 00:45:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2018-10-01 00:45:16,748 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 202 [2018-10-01 00:45:16,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:16,748 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2018-10-01 00:45:16,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-10-01 00:45:16,748 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2018-10-01 00:45:16,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-01 00:45:16,748 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:16,749 INFO L375 BasicCegarLoop]: trace histogram [200, 1, 1, 1] [2018-10-01 00:45:16,749 INFO L423 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:16,749 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:16,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1965190337, now seen corresponding path program 200 times [2018-10-01 00:45:16,749 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:16,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:16,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:16,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:45:16,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:18,180 INFO L134 CoverageAnalysis]: Checked inductivity of 20100 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:18,180 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:18,180 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:18,187 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:45:18,292 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:45:18,293 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:18,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 20100 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:18,742 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:18,742 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202, 202] total 202 [2018-10-01 00:45:18,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-10-01 00:45:18,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-10-01 00:45:18,746 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:18,746 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand 203 states. [2018-10-01 00:45:20,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:20,404 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-10-01 00:45:20,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-10-01 00:45:20,405 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 203 [2018-10-01 00:45:20,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:20,405 INFO L225 Difference]: With dead ends: 207 [2018-10-01 00:45:20,405 INFO L226 Difference]: Without dead ends: 205 [2018-10-01 00:45:20,405 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:45:20,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-10-01 00:45:20,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-10-01 00:45:20,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-01 00:45:20,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-10-01 00:45:20,408 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 203 [2018-10-01 00:45:20,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:20,409 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-10-01 00:45:20,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-10-01 00:45:20,409 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-10-01 00:45:20,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-01 00:45:20,409 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:20,409 INFO L375 BasicCegarLoop]: trace histogram [201, 1, 1, 1] [2018-10-01 00:45:20,410 INFO L423 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:20,410 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:20,410 INFO L82 PathProgramCache]: Analyzing trace with hash 791356328, now seen corresponding path program 201 times [2018-10-01 00:45:20,410 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:20,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:20,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:20,410 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:20,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:22,018 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:22,019 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:22,019 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:22,025 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:45:22,309 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 102 check-sat command(s) [2018-10-01 00:45:22,309 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:22,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:22,707 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:22,728 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:22,729 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203, 203] total 203 [2018-10-01 00:45:22,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-10-01 00:45:22,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-10-01 00:45:22,733 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:22,733 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 204 states. [2018-10-01 00:45:24,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:24,472 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-10-01 00:45:24,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-10-01 00:45:24,472 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 204 [2018-10-01 00:45:24,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:24,473 INFO L225 Difference]: With dead ends: 208 [2018-10-01 00:45:24,473 INFO L226 Difference]: Without dead ends: 206 [2018-10-01 00:45:24,473 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:45:24,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-10-01 00:45:24,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-10-01 00:45:24,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-10-01 00:45:24,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2018-10-01 00:45:24,476 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 204 [2018-10-01 00:45:24,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:24,476 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2018-10-01 00:45:24,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-10-01 00:45:24,476 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2018-10-01 00:45:24,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-01 00:45:24,477 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:24,477 INFO L375 BasicCegarLoop]: trace histogram [202, 1, 1, 1] [2018-10-01 00:45:24,477 INFO L423 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:24,477 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:24,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1237759583, now seen corresponding path program 202 times [2018-10-01 00:45:24,478 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:24,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:24,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:24,478 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:24,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 20503 backedges. 0 proven. 20503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:26,019 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:26,019 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:26,027 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:45:26,135 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:45:26,135 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:26,141 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:26,544 INFO L134 CoverageAnalysis]: Checked inductivity of 20503 backedges. 0 proven. 20503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:26,565 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:26,566 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204, 204] total 204 [2018-10-01 00:45:26,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-10-01 00:45:26,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-10-01 00:45:26,569 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:26,569 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 205 states. [2018-10-01 00:45:28,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:28,493 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-01 00:45:28,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-10-01 00:45:28,494 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 205 [2018-10-01 00:45:28,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:28,494 INFO L225 Difference]: With dead ends: 209 [2018-10-01 00:45:28,494 INFO L226 Difference]: Without dead ends: 207 [2018-10-01 00:45:28,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:45:28,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-01 00:45:28,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-10-01 00:45:28,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-01 00:45:28,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-10-01 00:45:28,497 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 205 [2018-10-01 00:45:28,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:28,497 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-10-01 00:45:28,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-10-01 00:45:28,497 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-10-01 00:45:28,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-01 00:45:28,498 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:28,498 INFO L375 BasicCegarLoop]: trace histogram [203, 1, 1, 1] [2018-10-01 00:45:28,498 INFO L423 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:28,498 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:28,498 INFO L82 PathProgramCache]: Analyzing trace with hash 284156616, now seen corresponding path program 203 times [2018-10-01 00:45:28,498 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:28,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:28,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:28,499 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:28,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:29,965 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:29,965 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:29,965 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:29,972 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:45:30,274 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 103 check-sat command(s) [2018-10-01 00:45:30,275 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:30,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:30,704 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:30,725 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:30,725 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205, 205] total 205 [2018-10-01 00:45:30,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-10-01 00:45:30,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-10-01 00:45:30,728 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:30,728 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 206 states. [2018-10-01 00:45:32,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:32,609 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2018-10-01 00:45:32,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-10-01 00:45:32,609 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 206 [2018-10-01 00:45:32,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:32,610 INFO L225 Difference]: With dead ends: 210 [2018-10-01 00:45:32,610 INFO L226 Difference]: Without dead ends: 208 [2018-10-01 00:45:32,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:45:32,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-10-01 00:45:32,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-10-01 00:45:32,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-10-01 00:45:32,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2018-10-01 00:45:32,613 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 206 [2018-10-01 00:45:32,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:32,613 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2018-10-01 00:45:32,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-10-01 00:45:32,613 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2018-10-01 00:45:32,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-01 00:45:32,614 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:32,614 INFO L375 BasicCegarLoop]: trace histogram [204, 1, 1, 1] [2018-10-01 00:45:32,614 INFO L423 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:32,614 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:32,614 INFO L82 PathProgramCache]: Analyzing trace with hash 218918529, now seen corresponding path program 204 times [2018-10-01 00:45:32,614 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:32,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:32,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:32,615 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:32,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:34,109 INFO L134 CoverageAnalysis]: Checked inductivity of 20910 backedges. 0 proven. 20910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:34,110 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:34,110 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:34,117 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:45:34,382 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-10-01 00:45:34,382 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:34,388 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:34,781 INFO L134 CoverageAnalysis]: Checked inductivity of 20910 backedges. 0 proven. 20910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:34,802 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:34,802 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206, 206] total 206 [2018-10-01 00:45:34,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-10-01 00:45:34,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-10-01 00:45:34,806 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:34,806 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 207 states. [2018-10-01 00:45:36,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:36,635 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-10-01 00:45:36,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-10-01 00:45:36,635 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 207 [2018-10-01 00:45:36,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:36,635 INFO L225 Difference]: With dead ends: 211 [2018-10-01 00:45:36,636 INFO L226 Difference]: Without dead ends: 209 [2018-10-01 00:45:36,636 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:45:36,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-01 00:45:36,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-10-01 00:45:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-01 00:45:36,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-10-01 00:45:36,638 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 207 [2018-10-01 00:45:36,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:36,639 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-10-01 00:45:36,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-10-01 00:45:36,639 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-10-01 00:45:36,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-01 00:45:36,639 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:36,639 INFO L375 BasicCegarLoop]: trace histogram [205, 1, 1, 1] [2018-10-01 00:45:36,639 INFO L423 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:36,640 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:36,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1803462168, now seen corresponding path program 205 times [2018-10-01 00:45:36,640 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:36,640 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:36,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:36,640 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:36,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:38,343 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:38,343 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:38,343 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:38,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:45:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:38,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:38,882 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:38,901 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:38,902 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207, 207] total 207 [2018-10-01 00:45:38,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-10-01 00:45:38,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-10-01 00:45:38,905 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:38,905 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 208 states. [2018-10-01 00:45:40,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:40,768 INFO L93 Difference]: Finished difference Result 212 states and 212 transitions. [2018-10-01 00:45:40,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-10-01 00:45:40,768 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 208 [2018-10-01 00:45:40,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:40,769 INFO L225 Difference]: With dead ends: 212 [2018-10-01 00:45:40,769 INFO L226 Difference]: Without dead ends: 210 [2018-10-01 00:45:40,769 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:45:40,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-10-01 00:45:40,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-10-01 00:45:40,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-10-01 00:45:40,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-10-01 00:45:40,771 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 208 [2018-10-01 00:45:40,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:40,772 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-10-01 00:45:40,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-10-01 00:45:40,772 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-10-01 00:45:40,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-01 00:45:40,772 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:40,772 INFO L375 BasicCegarLoop]: trace histogram [206, 1, 1, 1] [2018-10-01 00:45:40,773 INFO L423 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:40,773 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:40,773 INFO L82 PathProgramCache]: Analyzing trace with hash -72754335, now seen corresponding path program 206 times [2018-10-01 00:45:40,773 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:40,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:40,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:40,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:45:40,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:42,448 INFO L134 CoverageAnalysis]: Checked inductivity of 21321 backedges. 0 proven. 21321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:42,448 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:42,448 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:42,455 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:45:42,564 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:45:42,564 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:42,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:43,000 INFO L134 CoverageAnalysis]: Checked inductivity of 21321 backedges. 0 proven. 21321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:43,021 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:43,021 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208, 208] total 208 [2018-10-01 00:45:43,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-10-01 00:45:43,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-10-01 00:45:43,024 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:43,024 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 209 states. [2018-10-01 00:45:45,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:45,559 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-10-01 00:45:45,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-10-01 00:45:45,559 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 209 [2018-10-01 00:45:45,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:45,560 INFO L225 Difference]: With dead ends: 213 [2018-10-01 00:45:45,560 INFO L226 Difference]: Without dead ends: 211 [2018-10-01 00:45:45,560 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:45:45,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-01 00:45:45,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-01 00:45:45,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-01 00:45:45,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-10-01 00:45:45,562 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 209 [2018-10-01 00:45:45,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:45,562 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-10-01 00:45:45,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-10-01 00:45:45,562 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-10-01 00:45:45,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-01 00:45:45,563 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:45,563 INFO L375 BasicCegarLoop]: trace histogram [207, 1, 1, 1] [2018-10-01 00:45:45,563 INFO L423 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:45,563 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:45,563 INFO L82 PathProgramCache]: Analyzing trace with hash 2039580936, now seen corresponding path program 207 times [2018-10-01 00:45:45,564 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:45,564 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:45,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:45,564 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:45,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:47,124 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:47,124 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:47,124 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:47,131 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:45:47,432 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 105 check-sat command(s) [2018-10-01 00:45:47,433 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:47,438 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:47,871 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:47,892 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:47,892 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209, 209] total 209 [2018-10-01 00:45:47,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-10-01 00:45:47,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-10-01 00:45:47,895 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:47,895 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 210 states. [2018-10-01 00:45:51,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:51,570 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2018-10-01 00:45:51,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-10-01 00:45:51,570 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 210 [2018-10-01 00:45:51,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:51,571 INFO L225 Difference]: With dead ends: 214 [2018-10-01 00:45:51,571 INFO L226 Difference]: Without dead ends: 212 [2018-10-01 00:45:51,571 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:45:51,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-10-01 00:45:51,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-10-01 00:45:51,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-10-01 00:45:51,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2018-10-01 00:45:51,575 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 210 [2018-10-01 00:45:51,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:51,575 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2018-10-01 00:45:51,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-10-01 00:45:51,575 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2018-10-01 00:45:51,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-01 00:45:51,576 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:51,576 INFO L375 BasicCegarLoop]: trace histogram [208, 1, 1, 1] [2018-10-01 00:45:51,576 INFO L423 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:51,577 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:51,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1197502399, now seen corresponding path program 208 times [2018-10-01 00:45:51,577 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:51,577 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:51,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:51,578 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:51,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:53,970 INFO L134 CoverageAnalysis]: Checked inductivity of 21736 backedges. 0 proven. 21736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:53,971 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:53,971 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:53,977 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:45:54,084 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:45:54,084 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:54,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:54,502 INFO L134 CoverageAnalysis]: Checked inductivity of 21736 backedges. 0 proven. 21736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:54,524 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:54,524 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210, 210] total 210 [2018-10-01 00:45:54,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-10-01 00:45:54,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-10-01 00:45:54,528 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:54,528 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 211 states. [2018-10-01 00:45:57,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:57,609 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-10-01 00:45:57,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-10-01 00:45:57,609 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 211 [2018-10-01 00:45:57,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:57,610 INFO L225 Difference]: With dead ends: 215 [2018-10-01 00:45:57,610 INFO L226 Difference]: Without dead ends: 213 [2018-10-01 00:45:57,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 00:45:57,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-01 00:45:57,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-10-01 00:45:57,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-01 00:45:57,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-10-01 00:45:57,613 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 211 [2018-10-01 00:45:57,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:57,613 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-10-01 00:45:57,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-10-01 00:45:57,613 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-10-01 00:45:57,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-01 00:45:57,614 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:57,614 INFO L375 BasicCegarLoop]: trace histogram [209, 1, 1, 1] [2018-10-01 00:45:57,614 INFO L423 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:57,614 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:57,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1532129320, now seen corresponding path program 209 times [2018-10-01 00:45:57,614 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:57,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:57,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:57,615 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:57,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:59,234 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:59,235 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:59,235 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:59,241 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:45:59,556 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 106 check-sat command(s) [2018-10-01 00:45:59,557 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:59,566 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:59,973 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:59,994 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:59,994 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211, 211] total 211 [2018-10-01 00:45:59,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-10-01 00:45:59,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-10-01 00:45:59,997 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:59,997 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 212 states. [2018-10-01 00:46:02,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:02,936 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2018-10-01 00:46:02,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-10-01 00:46:02,936 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 212 [2018-10-01 00:46:02,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:02,936 INFO L225 Difference]: With dead ends: 216 [2018-10-01 00:46:02,936 INFO L226 Difference]: Without dead ends: 214 [2018-10-01 00:46:02,937 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:46:02,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-10-01 00:46:02,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-10-01 00:46:02,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-10-01 00:46:02,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2018-10-01 00:46:02,939 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 212 [2018-10-01 00:46:02,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:02,939 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2018-10-01 00:46:02,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-10-01 00:46:02,940 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2018-10-01 00:46:02,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-01 00:46:02,940 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:02,940 INFO L375 BasicCegarLoop]: trace histogram [210, 1, 1, 1] [2018-10-01 00:46:02,940 INFO L423 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:02,940 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:02,941 INFO L82 PathProgramCache]: Analyzing trace with hash 251366689, now seen corresponding path program 210 times [2018-10-01 00:46:02,941 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:02,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:02,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:02,941 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:02,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:04,517 INFO L134 CoverageAnalysis]: Checked inductivity of 22155 backedges. 0 proven. 22155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:04,517 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:04,517 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:04,525 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:46:04,810 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 106 check-sat command(s) [2018-10-01 00:46:04,810 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:04,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:05,218 INFO L134 CoverageAnalysis]: Checked inductivity of 22155 backedges. 0 proven. 22155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:05,239 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:05,239 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212, 212] total 212 [2018-10-01 00:46:05,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-10-01 00:46:05,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-10-01 00:46:05,243 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:05,243 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand 213 states. [2018-10-01 00:46:07,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:07,578 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-10-01 00:46:07,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-10-01 00:46:07,578 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 213 [2018-10-01 00:46:07,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:07,579 INFO L225 Difference]: With dead ends: 217 [2018-10-01 00:46:07,579 INFO L226 Difference]: Without dead ends: 215 [2018-10-01 00:46:07,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:46:07,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-01 00:46:07,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-10-01 00:46:07,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-01 00:46:07,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-10-01 00:46:07,582 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 213 [2018-10-01 00:46:07,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:07,582 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-10-01 00:46:07,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-10-01 00:46:07,582 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-10-01 00:46:07,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-01 00:46:07,583 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:07,583 INFO L375 BasicCegarLoop]: trace histogram [211, 1, 1, 1] [2018-10-01 00:46:07,583 INFO L423 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:07,583 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:07,583 INFO L82 PathProgramCache]: Analyzing trace with hash -797569208, now seen corresponding path program 211 times [2018-10-01 00:46:07,583 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:07,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:07,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:07,584 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:07,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:09,381 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:09,381 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:09,381 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:09,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:46:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:09,503 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:09,914 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:09,934 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:09,935 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213, 213] total 213 [2018-10-01 00:46:09,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-10-01 00:46:09,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-10-01 00:46:09,938 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:09,938 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 214 states. [2018-10-01 00:46:13,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:13,706 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2018-10-01 00:46:13,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-10-01 00:46:13,706 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 214 [2018-10-01 00:46:13,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:13,707 INFO L225 Difference]: With dead ends: 218 [2018-10-01 00:46:13,707 INFO L226 Difference]: Without dead ends: 216 [2018-10-01 00:46:13,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:46:13,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-10-01 00:46:13,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-10-01 00:46:13,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-10-01 00:46:13,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2018-10-01 00:46:13,709 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 214 [2018-10-01 00:46:13,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:13,710 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2018-10-01 00:46:13,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-10-01 00:46:13,710 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2018-10-01 00:46:13,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-01 00:46:13,710 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:13,710 INFO L375 BasicCegarLoop]: trace histogram [212, 1, 1, 1] [2018-10-01 00:46:13,711 INFO L423 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:13,711 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:13,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1045156353, now seen corresponding path program 212 times [2018-10-01 00:46:13,711 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:13,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:13,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:13,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:46:13,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:15,295 INFO L134 CoverageAnalysis]: Checked inductivity of 22578 backedges. 0 proven. 22578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:15,295 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:15,295 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:15,303 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:46:15,410 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:46:15,410 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:15,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:15,866 INFO L134 CoverageAnalysis]: Checked inductivity of 22578 backedges. 0 proven. 22578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:15,886 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:15,886 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214, 214] total 214 [2018-10-01 00:46:15,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-10-01 00:46:15,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-10-01 00:46:15,889 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:15,889 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 215 states. [2018-10-01 00:46:18,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:18,415 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-10-01 00:46:18,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-10-01 00:46:18,415 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 215 [2018-10-01 00:46:18,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:18,416 INFO L225 Difference]: With dead ends: 219 [2018-10-01 00:46:18,416 INFO L226 Difference]: Without dead ends: 217 [2018-10-01 00:46:18,416 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:46:18,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-01 00:46:18,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-10-01 00:46:18,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-10-01 00:46:18,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-10-01 00:46:18,419 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 215 [2018-10-01 00:46:18,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:18,419 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-10-01 00:46:18,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-10-01 00:46:18,419 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-10-01 00:46:18,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-01 00:46:18,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:18,420 INFO L375 BasicCegarLoop]: trace histogram [213, 1, 1, 1] [2018-10-01 00:46:18,420 INFO L423 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:18,420 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:18,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1959893400, now seen corresponding path program 213 times [2018-10-01 00:46:18,420 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:18,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:18,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:18,420 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:18,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:20,028 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:20,028 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:20,036 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:46:20,338 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 108 check-sat command(s) [2018-10-01 00:46:20,338 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:20,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:20,767 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:20,788 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:20,789 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215, 215] total 215 [2018-10-01 00:46:20,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-10-01 00:46:20,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-10-01 00:46:20,792 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:20,792 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 216 states. [2018-10-01 00:46:23,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:23,323 INFO L93 Difference]: Finished difference Result 220 states and 220 transitions. [2018-10-01 00:46:23,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-10-01 00:46:23,324 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 216 [2018-10-01 00:46:23,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:23,324 INFO L225 Difference]: With dead ends: 220 [2018-10-01 00:46:23,324 INFO L226 Difference]: Without dead ends: 218 [2018-10-01 00:46:23,324 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:46:23,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-10-01 00:46:23,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2018-10-01 00:46:23,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-10-01 00:46:23,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2018-10-01 00:46:23,327 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 216 [2018-10-01 00:46:23,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:23,327 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2018-10-01 00:46:23,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-10-01 00:46:23,327 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2018-10-01 00:46:23,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-01 00:46:23,328 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:23,328 INFO L375 BasicCegarLoop]: trace histogram [214, 1, 1, 1] [2018-10-01 00:46:23,328 INFO L423 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:23,328 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:23,328 INFO L82 PathProgramCache]: Analyzing trace with hash -627155231, now seen corresponding path program 214 times [2018-10-01 00:46:23,328 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:23,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:23,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:23,329 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:23,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:24,935 INFO L134 CoverageAnalysis]: Checked inductivity of 23005 backedges. 0 proven. 23005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:24,935 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:24,935 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:24,942 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:46:25,051 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:46:25,052 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:25,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:25,472 INFO L134 CoverageAnalysis]: Checked inductivity of 23005 backedges. 0 proven. 23005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:25,494 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:25,495 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216, 216] total 216 [2018-10-01 00:46:25,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-10-01 00:46:25,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-10-01 00:46:25,498 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:25,498 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand 217 states. [2018-10-01 00:46:28,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:28,829 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-01 00:46:28,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-10-01 00:46:28,829 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 217 [2018-10-01 00:46:28,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:28,830 INFO L225 Difference]: With dead ends: 221 [2018-10-01 00:46:28,830 INFO L226 Difference]: Without dead ends: 219 [2018-10-01 00:46:28,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:46:28,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-01 00:46:28,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-10-01 00:46:28,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-01 00:46:28,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-10-01 00:46:28,834 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 217 [2018-10-01 00:46:28,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:28,835 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-10-01 00:46:28,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-10-01 00:46:28,835 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-10-01 00:46:28,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-01 00:46:28,836 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:28,836 INFO L375 BasicCegarLoop]: trace histogram [215, 1, 1, 1] [2018-10-01 00:46:28,836 INFO L423 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:28,836 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:28,836 INFO L82 PathProgramCache]: Analyzing trace with hash 2033022344, now seen corresponding path program 215 times [2018-10-01 00:46:28,836 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:28,836 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:28,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:28,837 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:28,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:30,486 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:30,486 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:30,486 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:30,494 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:46:30,828 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 109 check-sat command(s) [2018-10-01 00:46:30,828 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:30,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:31,256 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:31,277 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:31,277 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217, 217] total 217 [2018-10-01 00:46:31,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-10-01 00:46:31,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-10-01 00:46:31,280 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:31,280 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 218 states. [2018-10-01 00:46:33,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:33,785 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2018-10-01 00:46:33,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-10-01 00:46:33,785 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 218 [2018-10-01 00:46:33,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:33,785 INFO L225 Difference]: With dead ends: 222 [2018-10-01 00:46:33,786 INFO L226 Difference]: Without dead ends: 220 [2018-10-01 00:46:33,786 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:46:33,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-10-01 00:46:33,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-10-01 00:46:33,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-10-01 00:46:33,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2018-10-01 00:46:33,788 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 218 [2018-10-01 00:46:33,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:33,789 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2018-10-01 00:46:33,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-10-01 00:46:33,789 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2018-10-01 00:46:33,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-01 00:46:33,789 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:33,789 INFO L375 BasicCegarLoop]: trace histogram [216, 1, 1, 1] [2018-10-01 00:46:33,790 INFO L423 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:33,790 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:33,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1400818751, now seen corresponding path program 216 times [2018-10-01 00:46:33,790 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:33,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:33,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:33,790 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:33,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:35,459 INFO L134 CoverageAnalysis]: Checked inductivity of 23436 backedges. 0 proven. 23436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:35,460 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:35,460 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:35,467 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:46:35,766 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2018-10-01 00:46:35,766 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:35,773 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 23436 backedges. 0 proven. 23436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:36,207 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:36,207 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [218, 218] total 218 [2018-10-01 00:46:36,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 219 states [2018-10-01 00:46:36,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2018-10-01 00:46:36,211 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:36,211 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 219 states. [2018-10-01 00:46:39,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:39,228 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-01 00:46:39,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-10-01 00:46:39,228 INFO L78 Accepts]: Start accepts. Automaton has 219 states. Word has length 219 [2018-10-01 00:46:39,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:39,229 INFO L225 Difference]: With dead ends: 223 [2018-10-01 00:46:39,229 INFO L226 Difference]: Without dead ends: 221 [2018-10-01 00:46:39,229 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:46:39,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-01 00:46:39,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-10-01 00:46:39,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-01 00:46:39,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-10-01 00:46:39,232 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 219 [2018-10-01 00:46:39,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:39,232 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-10-01 00:46:39,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 219 states. [2018-10-01 00:46:39,232 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-10-01 00:46:39,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-01 00:46:39,232 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:39,233 INFO L375 BasicCegarLoop]: trace histogram [217, 1, 1, 1] [2018-10-01 00:46:39,233 INFO L423 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:39,233 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:39,233 INFO L82 PathProgramCache]: Analyzing trace with hash -475710296, now seen corresponding path program 217 times [2018-10-01 00:46:39,233 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:39,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:39,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:39,234 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:39,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:40,872 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:40,872 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:40,873 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:40,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:46:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:40,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:41,424 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:41,444 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:41,444 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219, 219] total 219 [2018-10-01 00:46:41,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-10-01 00:46:41,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-10-01 00:46:41,448 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:41,448 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 220 states. [2018-10-01 00:46:44,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:44,058 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2018-10-01 00:46:44,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-10-01 00:46:44,058 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 220 [2018-10-01 00:46:44,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:44,059 INFO L225 Difference]: With dead ends: 224 [2018-10-01 00:46:44,059 INFO L226 Difference]: Without dead ends: 222 [2018-10-01 00:46:44,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:46:44,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-10-01 00:46:44,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2018-10-01 00:46:44,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-10-01 00:46:44,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2018-10-01 00:46:44,062 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 220 [2018-10-01 00:46:44,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:44,062 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2018-10-01 00:46:44,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-10-01 00:46:44,062 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2018-10-01 00:46:44,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-01 00:46:44,063 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:44,063 INFO L375 BasicCegarLoop]: trace histogram [218, 1, 1, 1] [2018-10-01 00:46:44,063 INFO L423 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:44,063 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:44,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1862119263, now seen corresponding path program 218 times [2018-10-01 00:46:44,063 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:44,063 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:44,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:44,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:46:44,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 23871 backedges. 0 proven. 23871 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:45,721 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:45,722 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:45,729 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:46:45,839 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:46:45,839 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:45,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:46,273 INFO L134 CoverageAnalysis]: Checked inductivity of 23871 backedges. 0 proven. 23871 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:46,293 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:46,294 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [220, 220] total 220 [2018-10-01 00:46:46,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 221 states [2018-10-01 00:46:46,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2018-10-01 00:46:46,297 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:46,297 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 221 states. [2018-10-01 00:46:49,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:49,097 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-10-01 00:46:49,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-10-01 00:46:49,098 INFO L78 Accepts]: Start accepts. Automaton has 221 states. Word has length 221 [2018-10-01 00:46:49,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:49,098 INFO L225 Difference]: With dead ends: 225 [2018-10-01 00:46:49,098 INFO L226 Difference]: Without dead ends: 223 [2018-10-01 00:46:49,098 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:46:49,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-01 00:46:49,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-10-01 00:46:49,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-01 00:46:49,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-01 00:46:49,101 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 221 [2018-10-01 00:46:49,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:49,101 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-01 00:46:49,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 221 states. [2018-10-01 00:46:49,101 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-01 00:46:49,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-01 00:46:49,102 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:49,102 INFO L375 BasicCegarLoop]: trace histogram [219, 1, 1, 1] [2018-10-01 00:46:49,102 INFO L423 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:49,102 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:49,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1891124280, now seen corresponding path program 219 times [2018-10-01 00:46:49,102 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:49,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:49,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:49,103 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:49,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:50,819 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:50,820 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:50,820 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:50,827 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:46:51,142 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 111 check-sat command(s) [2018-10-01 00:46:51,142 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:51,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:51,604 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:51,624 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:51,625 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [221, 221] total 221 [2018-10-01 00:46:51,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-10-01 00:46:51,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-10-01 00:46:51,628 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:51,628 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 222 states. [2018-10-01 00:46:55,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:55,753 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2018-10-01 00:46:55,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-10-01 00:46:55,754 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 222 [2018-10-01 00:46:55,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:55,754 INFO L225 Difference]: With dead ends: 226 [2018-10-01 00:46:55,754 INFO L226 Difference]: Without dead ends: 224 [2018-10-01 00:46:55,754 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:46:55,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-10-01 00:46:55,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2018-10-01 00:46:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-10-01 00:46:55,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-10-01 00:46:55,759 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 222 [2018-10-01 00:46:55,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:55,759 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-10-01 00:46:55,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-10-01 00:46:55,759 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-10-01 00:46:55,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-01 00:46:55,760 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:55,760 INFO L375 BasicCegarLoop]: trace histogram [220, 1, 1, 1] [2018-10-01 00:46:55,760 INFO L423 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:55,761 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:55,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1504687489, now seen corresponding path program 220 times [2018-10-01 00:46:55,761 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:55,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:55,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:55,762 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:55,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 24310 backedges. 0 proven. 24310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:57,698 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:57,698 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:57,705 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:46:57,820 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:46:57,821 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:57,826 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 24310 backedges. 0 proven. 24310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:58,285 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:58,285 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [222, 222] total 222 [2018-10-01 00:46:58,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 223 states [2018-10-01 00:46:58,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 223 interpolants. [2018-10-01 00:46:58,289 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:58,289 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 223 states. [2018-10-01 00:47:00,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:00,638 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-10-01 00:47:00,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2018-10-01 00:47:00,639 INFO L78 Accepts]: Start accepts. Automaton has 223 states. Word has length 223 [2018-10-01 00:47:00,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:00,639 INFO L225 Difference]: With dead ends: 227 [2018-10-01 00:47:00,639 INFO L226 Difference]: Without dead ends: 225 [2018-10-01 00:47:00,639 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:47:00,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-10-01 00:47:00,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-10-01 00:47:00,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-01 00:47:00,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-10-01 00:47:00,642 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 223 [2018-10-01 00:47:00,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:00,642 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-10-01 00:47:00,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 223 states. [2018-10-01 00:47:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-10-01 00:47:00,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-01 00:47:00,643 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:00,643 INFO L375 BasicCegarLoop]: trace histogram [221, 1, 1, 1] [2018-10-01 00:47:00,643 INFO L423 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:00,643 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:00,644 INFO L82 PathProgramCache]: Analyzing trace with hash -599330072, now seen corresponding path program 221 times [2018-10-01 00:47:00,644 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:00,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:00,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:00,644 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:00,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:02,384 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:02,385 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:02,385 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:47:02,392 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:47:02,743 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 112 check-sat command(s) [2018-10-01 00:47:02,743 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:02,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:03,200 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:03,221 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:03,221 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223, 223] total 223 [2018-10-01 00:47:03,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-10-01 00:47:03,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-10-01 00:47:03,224 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:03,224 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 224 states. [2018-10-01 00:47:06,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:06,643 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2018-10-01 00:47:06,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-10-01 00:47:06,644 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 224 [2018-10-01 00:47:06,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:06,644 INFO L225 Difference]: With dead ends: 228 [2018-10-01 00:47:06,644 INFO L226 Difference]: Without dead ends: 226 [2018-10-01 00:47:06,644 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:47:06,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-10-01 00:47:06,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-10-01 00:47:06,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-10-01 00:47:06,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-10-01 00:47:06,647 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 224 [2018-10-01 00:47:06,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:06,647 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-10-01 00:47:06,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-10-01 00:47:06,647 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-10-01 00:47:06,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-01 00:47:06,648 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:06,648 INFO L375 BasicCegarLoop]: trace histogram [222, 1, 1, 1] [2018-10-01 00:47:06,648 INFO L423 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:06,648 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:06,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1399365023, now seen corresponding path program 222 times [2018-10-01 00:47:06,648 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:06,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:06,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:06,649 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:06,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 24753 backedges. 0 proven. 24753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:08,393 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:08,393 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:47:08,400 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:47:08,709 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 112 check-sat command(s) [2018-10-01 00:47:08,709 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:08,716 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 24753 backedges. 0 proven. 24753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:09,209 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:09,209 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [224, 224] total 224 [2018-10-01 00:47:09,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 225 states [2018-10-01 00:47:09,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2018-10-01 00:47:09,212 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:09,212 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 225 states. [2018-10-01 00:47:12,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:12,822 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-10-01 00:47:12,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-10-01 00:47:12,823 INFO L78 Accepts]: Start accepts. Automaton has 225 states. Word has length 225 [2018-10-01 00:47:12,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:12,823 INFO L225 Difference]: With dead ends: 229 [2018-10-01 00:47:12,823 INFO L226 Difference]: Without dead ends: 227 [2018-10-01 00:47:12,823 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:47:12,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-01 00:47:12,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-10-01 00:47:12,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-01 00:47:12,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-10-01 00:47:12,826 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 225 [2018-10-01 00:47:12,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:12,826 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-10-01 00:47:12,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 225 states. [2018-10-01 00:47:12,826 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-10-01 00:47:12,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-01 00:47:12,827 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:12,827 INFO L375 BasicCegarLoop]: trace histogram [223, 1, 1, 1] [2018-10-01 00:47:12,827 INFO L423 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:12,827 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:12,827 INFO L82 PathProgramCache]: Analyzing trace with hash -430644728, now seen corresponding path program 223 times [2018-10-01 00:47:12,827 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:12,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:12,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:12,828 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:12,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:14,666 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:14,666 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:14,666 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:47:14,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:47:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:14,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:15,238 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:15,258 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:15,258 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [225, 225] total 225 [2018-10-01 00:47:15,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 226 states [2018-10-01 00:47:15,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2018-10-01 00:47:15,262 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:15,262 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 226 states. [2018-10-01 00:47:18,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:18,692 INFO L93 Difference]: Finished difference Result 230 states and 230 transitions. [2018-10-01 00:47:18,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2018-10-01 00:47:18,692 INFO L78 Accepts]: Start accepts. Automaton has 226 states. Word has length 226 [2018-10-01 00:47:18,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:18,693 INFO L225 Difference]: With dead ends: 230 [2018-10-01 00:47:18,693 INFO L226 Difference]: Without dead ends: 228 [2018-10-01 00:47:18,693 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:47:18,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-10-01 00:47:18,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-10-01 00:47:18,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-10-01 00:47:18,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2018-10-01 00:47:18,696 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 226 [2018-10-01 00:47:18,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:18,696 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2018-10-01 00:47:18,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 226 states. [2018-10-01 00:47:18,696 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2018-10-01 00:47:18,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-01 00:47:18,697 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:18,697 INFO L375 BasicCegarLoop]: trace histogram [224, 1, 1, 1] [2018-10-01 00:47:18,697 INFO L423 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:18,697 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:18,697 INFO L82 PathProgramCache]: Analyzing trace with hash -465086655, now seen corresponding path program 224 times [2018-10-01 00:47:18,697 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:18,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:18,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:18,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:47:18,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:20,702 INFO L134 CoverageAnalysis]: Checked inductivity of 25200 backedges. 0 proven. 25200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:20,702 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:20,702 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:47:20,709 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:47:20,838 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:47:20,839 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:20,847 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:21,580 INFO L134 CoverageAnalysis]: Checked inductivity of 25200 backedges. 0 proven. 25200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:21,600 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:21,600 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [226, 226] total 226 [2018-10-01 00:47:21,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 227 states [2018-10-01 00:47:21,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 227 interpolants. [2018-10-01 00:47:21,605 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:21,605 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand 227 states. [2018-10-01 00:47:24,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:24,918 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-10-01 00:47:24,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2018-10-01 00:47:24,918 INFO L78 Accepts]: Start accepts. Automaton has 227 states. Word has length 227 [2018-10-01 00:47:24,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:24,919 INFO L225 Difference]: With dead ends: 231 [2018-10-01 00:47:24,919 INFO L226 Difference]: Without dead ends: 229 [2018-10-01 00:47:24,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:47:24,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-10-01 00:47:24,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-10-01 00:47:24,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-10-01 00:47:24,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-10-01 00:47:24,922 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 227 [2018-10-01 00:47:24,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:24,922 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-10-01 00:47:24,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 227 states. [2018-10-01 00:47:24,922 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-10-01 00:47:24,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-01 00:47:24,923 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:24,923 INFO L375 BasicCegarLoop]: trace histogram [225, 1, 1, 1] [2018-10-01 00:47:24,923 INFO L423 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:24,923 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:24,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1532786392, now seen corresponding path program 225 times [2018-10-01 00:47:24,923 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:24,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:24,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:24,924 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:24,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:26,699 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:26,700 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:26,700 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:47:26,707 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:47:27,046 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 114 check-sat command(s) [2018-10-01 00:47:27,047 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:27,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:27,491 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:27,511 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:27,511 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [227, 227] total 227 [2018-10-01 00:47:27,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-10-01 00:47:27,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-10-01 00:47:27,515 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:27,515 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 228 states. [2018-10-01 00:47:29,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:29,921 INFO L93 Difference]: Finished difference Result 232 states and 232 transitions. [2018-10-01 00:47:29,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2018-10-01 00:47:29,921 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 228 [2018-10-01 00:47:29,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:29,921 INFO L225 Difference]: With dead ends: 232 [2018-10-01 00:47:29,922 INFO L226 Difference]: Without dead ends: 230 [2018-10-01 00:47:29,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:47:29,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-10-01 00:47:29,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2018-10-01 00:47:29,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-10-01 00:47:29,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2018-10-01 00:47:29,925 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 228 [2018-10-01 00:47:29,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:29,925 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2018-10-01 00:47:29,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-10-01 00:47:29,925 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2018-10-01 00:47:29,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-10-01 00:47:29,925 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:29,926 INFO L375 BasicCegarLoop]: trace histogram [226, 1, 1, 1] [2018-10-01 00:47:29,926 INFO L423 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:29,926 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:29,926 INFO L82 PathProgramCache]: Analyzing trace with hash -271739871, now seen corresponding path program 226 times [2018-10-01 00:47:29,926 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:29,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:29,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:29,927 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:29,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:31,728 INFO L134 CoverageAnalysis]: Checked inductivity of 25651 backedges. 0 proven. 25651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:31,728 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:31,729 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:47:31,742 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:47:31,860 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:47:31,861 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:31,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:32,317 INFO L134 CoverageAnalysis]: Checked inductivity of 25651 backedges. 0 proven. 25651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:32,338 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:32,338 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [228, 228] total 228 [2018-10-01 00:47:32,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 229 states [2018-10-01 00:47:32,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 229 interpolants. [2018-10-01 00:47:32,342 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:32,342 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 229 states. [2018-10-01 00:47:35,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:35,155 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-10-01 00:47:35,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2018-10-01 00:47:35,156 INFO L78 Accepts]: Start accepts. Automaton has 229 states. Word has length 229 [2018-10-01 00:47:35,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:35,156 INFO L225 Difference]: With dead ends: 233 [2018-10-01 00:47:35,157 INFO L226 Difference]: Without dead ends: 231 [2018-10-01 00:47:35,157 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:47:35,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-01 00:47:35,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-10-01 00:47:35,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-01 00:47:35,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-10-01 00:47:35,160 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 229 [2018-10-01 00:47:35,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:35,161 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-10-01 00:47:35,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has 229 states. [2018-10-01 00:47:35,161 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-10-01 00:47:35,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-01 00:47:35,162 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:35,162 INFO L375 BasicCegarLoop]: trace histogram [227, 1, 1, 1] [2018-10-01 00:47:35,162 INFO L423 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:35,162 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:35,162 INFO L82 PathProgramCache]: Analyzing trace with hash 165996616, now seen corresponding path program 227 times [2018-10-01 00:47:35,162 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:35,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:35,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:35,163 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:35,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:36,996 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:36,996 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:36,996 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:47:37,005 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:47:37,365 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 115 check-sat command(s) [2018-10-01 00:47:37,365 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:37,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:37,816 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:37,837 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:37,837 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [229, 229] total 229 [2018-10-01 00:47:37,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 230 states [2018-10-01 00:47:37,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2018-10-01 00:47:37,841 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:37,841 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 230 states. [2018-10-01 00:47:40,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:40,201 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-10-01 00:47:40,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2018-10-01 00:47:40,201 INFO L78 Accepts]: Start accepts. Automaton has 230 states. Word has length 230 [2018-10-01 00:47:40,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:40,202 INFO L225 Difference]: With dead ends: 234 [2018-10-01 00:47:40,202 INFO L226 Difference]: Without dead ends: 232 [2018-10-01 00:47:40,202 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:47:40,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-10-01 00:47:40,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-10-01 00:47:40,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-10-01 00:47:40,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2018-10-01 00:47:40,205 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 230 [2018-10-01 00:47:40,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:40,206 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2018-10-01 00:47:40,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 230 states. [2018-10-01 00:47:40,206 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2018-10-01 00:47:40,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-10-01 00:47:40,206 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:40,206 INFO L375 BasicCegarLoop]: trace histogram [228, 1, 1, 1] [2018-10-01 00:47:40,207 INFO L423 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:40,207 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:40,207 INFO L82 PathProgramCache]: Analyzing trace with hash 850925825, now seen corresponding path program 228 times [2018-10-01 00:47:40,207 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:40,207 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:40,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:40,207 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:40,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:42,027 INFO L134 CoverageAnalysis]: Checked inductivity of 26106 backedges. 0 proven. 26106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:42,027 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:42,027 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:47:42,034 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:47:42,354 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 115 check-sat command(s) [2018-10-01 00:47:42,354 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:42,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:42,809 INFO L134 CoverageAnalysis]: Checked inductivity of 26106 backedges. 0 proven. 26106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:42,830 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:42,830 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [230, 230] total 230 [2018-10-01 00:47:42,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 231 states [2018-10-01 00:47:42,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 231 interpolants. [2018-10-01 00:47:42,834 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:42,834 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand 231 states. [2018-10-01 00:47:46,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:46,037 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-10-01 00:47:46,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2018-10-01 00:47:46,037 INFO L78 Accepts]: Start accepts. Automaton has 231 states. Word has length 231 [2018-10-01 00:47:46,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:46,038 INFO L225 Difference]: With dead ends: 235 [2018-10-01 00:47:46,038 INFO L226 Difference]: Without dead ends: 233 [2018-10-01 00:47:46,038 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:47:46,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-10-01 00:47:46,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-10-01 00:47:46,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-10-01 00:47:46,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-10-01 00:47:46,041 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 231 [2018-10-01 00:47:46,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:46,041 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-10-01 00:47:46,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 231 states. [2018-10-01 00:47:46,041 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-10-01 00:47:46,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-01 00:47:46,042 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:46,042 INFO L375 BasicCegarLoop]: trace histogram [229, 1, 1, 1] [2018-10-01 00:47:46,042 INFO L423 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:46,042 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:46,042 INFO L82 PathProgramCache]: Analyzing trace with hash 608894824, now seen corresponding path program 229 times [2018-10-01 00:47:46,042 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:46,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:46,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:46,043 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:46,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:47,899 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:47,899 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:47,899 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:47:47,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:47:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:48,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:48,504 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:48,504 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [231, 231] total 231 [2018-10-01 00:47:48,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 232 states [2018-10-01 00:47:48,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2018-10-01 00:47:48,508 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:48,508 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 232 states. [2018-10-01 00:47:50,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:50,847 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2018-10-01 00:47:50,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2018-10-01 00:47:50,848 INFO L78 Accepts]: Start accepts. Automaton has 232 states. Word has length 232 [2018-10-01 00:47:50,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:50,848 INFO L225 Difference]: With dead ends: 236 [2018-10-01 00:47:50,848 INFO L226 Difference]: Without dead ends: 234 [2018-10-01 00:47:50,848 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:47:50,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-10-01 00:47:50,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2018-10-01 00:47:50,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-10-01 00:47:50,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2018-10-01 00:47:50,852 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 232 [2018-10-01 00:47:50,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:50,852 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2018-10-01 00:47:50,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 232 states. [2018-10-01 00:47:50,852 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2018-10-01 00:47:50,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-01 00:47:50,853 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:50,853 INFO L375 BasicCegarLoop]: trace histogram [230, 1, 1, 1] [2018-10-01 00:47:50,853 INFO L423 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:50,853 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:50,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1695868385, now seen corresponding path program 230 times [2018-10-01 00:47:50,853 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:50,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:50,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:50,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:47:50,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 26565 backedges. 0 proven. 26565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:52,700 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:52,700 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:47:52,708 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:47:52,825 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:47:52,825 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:52,831 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:53,327 INFO L134 CoverageAnalysis]: Checked inductivity of 26565 backedges. 0 proven. 26565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:53,348 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:53,349 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [232, 232] total 232 [2018-10-01 00:47:53,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 233 states [2018-10-01 00:47:53,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 233 interpolants. [2018-10-01 00:47:53,352 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:53,352 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand 233 states. [2018-10-01 00:47:56,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:56,978 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-10-01 00:47:56,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2018-10-01 00:47:56,978 INFO L78 Accepts]: Start accepts. Automaton has 233 states. Word has length 233 [2018-10-01 00:47:56,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:56,979 INFO L225 Difference]: With dead ends: 237 [2018-10-01 00:47:56,979 INFO L226 Difference]: Without dead ends: 235 [2018-10-01 00:47:56,979 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:47:56,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-01 00:47:56,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-10-01 00:47:56,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-01 00:47:56,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-10-01 00:47:56,982 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 233 [2018-10-01 00:47:56,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:56,982 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-10-01 00:47:56,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 233 states. [2018-10-01 00:47:56,982 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-10-01 00:47:56,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-01 00:47:56,983 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:56,983 INFO L375 BasicCegarLoop]: trace histogram [231, 1, 1, 1] [2018-10-01 00:47:56,983 INFO L423 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:56,983 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:56,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1032310408, now seen corresponding path program 231 times [2018-10-01 00:47:56,983 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:56,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:56,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:56,984 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:56,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:58,834 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:58,834 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:47:58,841 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:47:59,193 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 117 check-sat command(s) [2018-10-01 00:47:59,193 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:59,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:59,720 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:59,720 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [233, 233] total 233 [2018-10-01 00:47:59,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 234 states [2018-10-01 00:47:59,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 234 interpolants. [2018-10-01 00:47:59,724 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:59,724 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 234 states. [2018-10-01 00:48:02,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:02,617 INFO L93 Difference]: Finished difference Result 238 states and 238 transitions. [2018-10-01 00:48:02,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2018-10-01 00:48:02,617 INFO L78 Accepts]: Start accepts. Automaton has 234 states. Word has length 234 [2018-10-01 00:48:02,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:02,618 INFO L225 Difference]: With dead ends: 238 [2018-10-01 00:48:02,618 INFO L226 Difference]: Without dead ends: 236 [2018-10-01 00:48:02,618 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:48:02,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-10-01 00:48:02,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-10-01 00:48:02,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-10-01 00:48:02,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-10-01 00:48:02,621 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 234 [2018-10-01 00:48:02,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:02,621 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-10-01 00:48:02,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 234 states. [2018-10-01 00:48:02,621 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-10-01 00:48:02,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-01 00:48:02,622 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:02,622 INFO L375 BasicCegarLoop]: trace histogram [232, 1, 1, 1] [2018-10-01 00:48:02,622 INFO L423 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:02,622 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:02,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1936849601, now seen corresponding path program 232 times [2018-10-01 00:48:02,623 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:02,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:02,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:02,623 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:02,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:04,615 INFO L134 CoverageAnalysis]: Checked inductivity of 27028 backedges. 0 proven. 27028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:04,615 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:04,615 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:04,623 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:48:04,747 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:48:04,747 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:04,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:05,249 INFO L134 CoverageAnalysis]: Checked inductivity of 27028 backedges. 0 proven. 27028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:05,271 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:05,271 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [234, 234] total 234 [2018-10-01 00:48:05,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 235 states [2018-10-01 00:48:05,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 235 interpolants. [2018-10-01 00:48:05,276 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:05,276 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 235 states. [2018-10-01 00:48:09,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:09,494 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-10-01 00:48:09,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2018-10-01 00:48:09,494 INFO L78 Accepts]: Start accepts. Automaton has 235 states. Word has length 235 [2018-10-01 00:48:09,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:09,495 INFO L225 Difference]: With dead ends: 239 [2018-10-01 00:48:09,495 INFO L226 Difference]: Without dead ends: 237 [2018-10-01 00:48:09,495 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:48:09,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-10-01 00:48:09,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-10-01 00:48:09,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-10-01 00:48:09,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-10-01 00:48:09,498 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 235 [2018-10-01 00:48:09,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:09,498 INFO L480 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-10-01 00:48:09,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 235 states. [2018-10-01 00:48:09,498 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-10-01 00:48:09,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-01 00:48:09,499 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:09,499 INFO L375 BasicCegarLoop]: trace histogram [233, 1, 1, 1] [2018-10-01 00:48:09,499 INFO L423 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:09,499 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:09,499 INFO L82 PathProgramCache]: Analyzing trace with hash -87206488, now seen corresponding path program 233 times [2018-10-01 00:48:09,499 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:09,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:09,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:09,500 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:09,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:11,524 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:11,524 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:11,525 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:11,532 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:48:11,911 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 118 check-sat command(s) [2018-10-01 00:48:11,911 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:11,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:12,390 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:12,411 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:12,411 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [235, 235] total 235 [2018-10-01 00:48:12,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 236 states [2018-10-01 00:48:12,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2018-10-01 00:48:12,416 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:12,416 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 236 states. [2018-10-01 00:48:16,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:16,930 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2018-10-01 00:48:16,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2018-10-01 00:48:16,931 INFO L78 Accepts]: Start accepts. Automaton has 236 states. Word has length 236 [2018-10-01 00:48:16,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:16,931 INFO L225 Difference]: With dead ends: 240 [2018-10-01 00:48:16,931 INFO L226 Difference]: Without dead ends: 238 [2018-10-01 00:48:16,931 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:48:16,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-10-01 00:48:16,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-10-01 00:48:16,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-10-01 00:48:16,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2018-10-01 00:48:16,934 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 236 [2018-10-01 00:48:16,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:16,934 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2018-10-01 00:48:16,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 236 states. [2018-10-01 00:48:16,934 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2018-10-01 00:48:16,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-10-01 00:48:16,935 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:16,935 INFO L375 BasicCegarLoop]: trace histogram [234, 1, 1, 1] [2018-10-01 00:48:16,935 INFO L423 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:16,935 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:16,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1591564193, now seen corresponding path program 234 times [2018-10-01 00:48:16,936 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:16,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:16,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:16,936 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:16,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:18,820 INFO L134 CoverageAnalysis]: Checked inductivity of 27495 backedges. 0 proven. 27495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:18,820 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:18,820 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:18,827 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:48:19,160 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 118 check-sat command(s) [2018-10-01 00:48:19,161 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:19,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:19,637 INFO L134 CoverageAnalysis]: Checked inductivity of 27495 backedges. 0 proven. 27495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:19,659 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:19,659 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [236, 236] total 236 [2018-10-01 00:48:19,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 237 states [2018-10-01 00:48:19,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 237 interpolants. [2018-10-01 00:48:19,663 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:19,663 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand 237 states. [2018-10-01 00:48:22,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:22,994 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-10-01 00:48:22,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2018-10-01 00:48:22,994 INFO L78 Accepts]: Start accepts. Automaton has 237 states. Word has length 237 [2018-10-01 00:48:22,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:22,994 INFO L225 Difference]: With dead ends: 241 [2018-10-01 00:48:22,994 INFO L226 Difference]: Without dead ends: 239 [2018-10-01 00:48:22,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:48:22,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-10-01 00:48:22,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-10-01 00:48:22,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-01 00:48:22,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-10-01 00:48:22,997 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 237 [2018-10-01 00:48:22,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:22,998 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-10-01 00:48:22,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 237 states. [2018-10-01 00:48:22,998 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-10-01 00:48:22,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-01 00:48:22,998 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:22,999 INFO L375 BasicCegarLoop]: trace histogram [235, 1, 1, 1] [2018-10-01 00:48:22,999 INFO L423 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:22,999 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:22,999 INFO L82 PathProgramCache]: Analyzing trace with hash 2093847752, now seen corresponding path program 235 times [2018-10-01 00:48:22,999 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:22,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:22,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:22,999 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:23,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:24,914 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:24,915 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:24,915 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:24,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:48:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:25,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:25,526 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:25,545 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:25,546 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [237, 237] total 237 [2018-10-01 00:48:25,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 238 states [2018-10-01 00:48:25,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 238 interpolants. [2018-10-01 00:48:25,550 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:25,550 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 238 states. [2018-10-01 00:48:28,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:28,981 INFO L93 Difference]: Finished difference Result 242 states and 242 transitions. [2018-10-01 00:48:28,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2018-10-01 00:48:28,981 INFO L78 Accepts]: Start accepts. Automaton has 238 states. Word has length 238 [2018-10-01 00:48:28,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:28,981 INFO L225 Difference]: With dead ends: 242 [2018-10-01 00:48:28,981 INFO L226 Difference]: Without dead ends: 240 [2018-10-01 00:48:28,982 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:48:28,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-10-01 00:48:28,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2018-10-01 00:48:28,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-10-01 00:48:28,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 240 transitions. [2018-10-01 00:48:28,984 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 240 transitions. Word has length 238 [2018-10-01 00:48:28,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:28,984 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 240 transitions. [2018-10-01 00:48:28,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 238 states. [2018-10-01 00:48:28,985 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 240 transitions. [2018-10-01 00:48:28,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-10-01 00:48:28,985 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:28,985 INFO L375 BasicCegarLoop]: trace histogram [236, 1, 1, 1] [2018-10-01 00:48:28,985 INFO L423 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:28,986 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:28,986 INFO L82 PathProgramCache]: Analyzing trace with hash 484768897, now seen corresponding path program 236 times [2018-10-01 00:48:28,986 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:28,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:28,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:28,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:48:28,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:30,879 INFO L134 CoverageAnalysis]: Checked inductivity of 27966 backedges. 0 proven. 27966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:30,879 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:30,880 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:30,886 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:48:31,010 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:48:31,010 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:31,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:31,642 INFO L134 CoverageAnalysis]: Checked inductivity of 27966 backedges. 0 proven. 27966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:31,663 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:31,663 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [238, 238] total 238 [2018-10-01 00:48:31,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 239 states [2018-10-01 00:48:31,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 239 interpolants. [2018-10-01 00:48:31,668 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:31,668 INFO L87 Difference]: Start difference. First operand 240 states and 240 transitions. Second operand 239 states. [2018-10-01 00:48:35,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:35,450 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-10-01 00:48:35,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2018-10-01 00:48:35,451 INFO L78 Accepts]: Start accepts. Automaton has 239 states. Word has length 239 [2018-10-01 00:48:35,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:35,451 INFO L225 Difference]: With dead ends: 243 [2018-10-01 00:48:35,451 INFO L226 Difference]: Without dead ends: 241 [2018-10-01 00:48:35,451 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:48:35,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-10-01 00:48:35,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-10-01 00:48:35,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-01 00:48:35,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-10-01 00:48:35,454 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 239 [2018-10-01 00:48:35,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:35,454 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-10-01 00:48:35,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 239 states. [2018-10-01 00:48:35,454 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-10-01 00:48:35,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-01 00:48:35,455 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:35,455 INFO L375 BasicCegarLoop]: trace histogram [237, 1, 1, 1] [2018-10-01 00:48:35,455 INFO L423 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:35,455 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:35,455 INFO L82 PathProgramCache]: Analyzing trace with hash 2142931944, now seen corresponding path program 237 times [2018-10-01 00:48:35,455 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:35,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:35,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:35,456 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:35,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:37,530 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:37,530 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:37,536 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:48:37,899 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 120 check-sat command(s) [2018-10-01 00:48:37,900 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:37,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:38,381 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:38,401 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:38,402 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [239, 239] total 239 [2018-10-01 00:48:38,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 240 states [2018-10-01 00:48:38,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2018-10-01 00:48:38,406 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:38,406 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 240 states. [2018-10-01 00:48:41,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:41,808 INFO L93 Difference]: Finished difference Result 244 states and 244 transitions. [2018-10-01 00:48:41,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2018-10-01 00:48:41,809 INFO L78 Accepts]: Start accepts. Automaton has 240 states. Word has length 240 [2018-10-01 00:48:41,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:41,809 INFO L225 Difference]: With dead ends: 244 [2018-10-01 00:48:41,809 INFO L226 Difference]: Without dead ends: 242 [2018-10-01 00:48:41,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:48:41,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-10-01 00:48:41,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2018-10-01 00:48:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-10-01 00:48:41,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2018-10-01 00:48:41,812 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 240 [2018-10-01 00:48:41,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:41,812 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2018-10-01 00:48:41,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 240 states. [2018-10-01 00:48:41,812 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2018-10-01 00:48:41,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-01 00:48:41,813 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:41,813 INFO L375 BasicCegarLoop]: trace histogram [238, 1, 1, 1] [2018-10-01 00:48:41,813 INFO L423 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:41,813 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:41,814 INFO L82 PathProgramCache]: Analyzing trace with hash 2006378849, now seen corresponding path program 238 times [2018-10-01 00:48:41,814 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:41,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:41,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:41,814 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:41,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:43,750 INFO L134 CoverageAnalysis]: Checked inductivity of 28441 backedges. 0 proven. 28441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:43,750 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:43,750 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:43,757 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:48:43,881 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:48:43,881 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:43,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:44,370 INFO L134 CoverageAnalysis]: Checked inductivity of 28441 backedges. 0 proven. 28441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:44,391 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:44,391 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [240, 240] total 240 [2018-10-01 00:48:44,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 241 states [2018-10-01 00:48:44,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 241 interpolants. [2018-10-01 00:48:44,396 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:44,396 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand 241 states. [2018-10-01 00:48:47,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:47,779 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-10-01 00:48:47,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2018-10-01 00:48:47,780 INFO L78 Accepts]: Start accepts. Automaton has 241 states. Word has length 241 [2018-10-01 00:48:47,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:47,780 INFO L225 Difference]: With dead ends: 245 [2018-10-01 00:48:47,780 INFO L226 Difference]: Without dead ends: 243 [2018-10-01 00:48:47,780 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:48:47,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-01 00:48:47,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-10-01 00:48:47,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-10-01 00:48:47,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-10-01 00:48:47,783 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 241 [2018-10-01 00:48:47,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:47,783 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-10-01 00:48:47,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 241 states. [2018-10-01 00:48:47,784 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-10-01 00:48:47,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-01 00:48:47,784 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:47,784 INFO L375 BasicCegarLoop]: trace histogram [239, 1, 1, 1] [2018-10-01 00:48:47,784 INFO L423 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:47,785 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:47,785 INFO L82 PathProgramCache]: Analyzing trace with hash 2068200200, now seen corresponding path program 239 times [2018-10-01 00:48:47,785 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:47,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:47,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:47,785 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:47,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:49,718 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:49,718 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:49,725 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:48:50,131 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 121 check-sat command(s) [2018-10-01 00:48:50,131 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:50,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:50,626 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:50,647 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:50,647 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [241, 241] total 241 [2018-10-01 00:48:50,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 242 states [2018-10-01 00:48:50,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 242 interpolants. [2018-10-01 00:48:50,651 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:50,651 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 242 states. [2018-10-01 00:48:55,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:55,075 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2018-10-01 00:48:55,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2018-10-01 00:48:55,076 INFO L78 Accepts]: Start accepts. Automaton has 242 states. Word has length 242 [2018-10-01 00:48:55,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:55,076 INFO L225 Difference]: With dead ends: 246 [2018-10-01 00:48:55,076 INFO L226 Difference]: Without dead ends: 244 [2018-10-01 00:48:55,076 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:48:55,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-10-01 00:48:55,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2018-10-01 00:48:55,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-10-01 00:48:55,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2018-10-01 00:48:55,079 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 242 [2018-10-01 00:48:55,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:55,079 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2018-10-01 00:48:55,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 242 states. [2018-10-01 00:48:55,080 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2018-10-01 00:48:55,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-01 00:48:55,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:55,080 INFO L375 BasicCegarLoop]: trace histogram [240, 1, 1, 1] [2018-10-01 00:48:55,080 INFO L423 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:55,081 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:55,081 INFO L82 PathProgramCache]: Analyzing trace with hash -310305215, now seen corresponding path program 240 times [2018-10-01 00:48:55,081 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:55,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:55,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:55,081 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:55,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:57,181 INFO L134 CoverageAnalysis]: Checked inductivity of 28920 backedges. 0 proven. 28920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:57,182 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:57,182 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:57,189 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:48:57,541 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 121 check-sat command(s) [2018-10-01 00:48:57,542 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:57,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:58,038 INFO L134 CoverageAnalysis]: Checked inductivity of 28920 backedges. 0 proven. 28920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:58,058 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:58,059 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [242, 242] total 242 [2018-10-01 00:48:58,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 243 states [2018-10-01 00:48:58,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 243 interpolants. [2018-10-01 00:48:58,063 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:58,064 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand 243 states. [2018-10-01 00:49:00,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:49:00,793 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-10-01 00:49:00,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 243 states. [2018-10-01 00:49:00,794 INFO L78 Accepts]: Start accepts. Automaton has 243 states. Word has length 243 [2018-10-01 00:49:00,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:49:00,794 INFO L225 Difference]: With dead ends: 247 [2018-10-01 00:49:00,794 INFO L226 Difference]: Without dead ends: 245 [2018-10-01 00:49:00,795 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:49:00,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-10-01 00:49:00,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-10-01 00:49:00,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-10-01 00:49:00,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-10-01 00:49:00,798 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 243 [2018-10-01 00:49:00,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:49:00,798 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-10-01 00:49:00,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has 243 states. [2018-10-01 00:49:00,798 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-10-01 00:49:00,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-01 00:49:00,798 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:49:00,799 INFO L375 BasicCegarLoop]: trace histogram [241, 1, 1, 1] [2018-10-01 00:49:00,799 INFO L423 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:49:00,799 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:49:00,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1029529048, now seen corresponding path program 241 times [2018-10-01 00:49:00,799 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:49:00,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:49:00,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:00,800 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:49:00,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:02,962 INFO L134 CoverageAnalysis]: Checked inductivity of 29161 backedges. 0 proven. 29161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:02,962 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:49:02,962 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:49:02,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:49:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:03,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:03,617 INFO L134 CoverageAnalysis]: Checked inductivity of 29161 backedges. 0 proven. 29161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:03,638 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:03,638 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [243, 243] total 243 [2018-10-01 00:49:03,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 244 states [2018-10-01 00:49:03,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 244 interpolants. [2018-10-01 00:49:03,643 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:03,643 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 244 states. [2018-10-01 00:49:09,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:49:09,078 INFO L93 Difference]: Finished difference Result 248 states and 248 transitions. [2018-10-01 00:49:09,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2018-10-01 00:49:09,078 INFO L78 Accepts]: Start accepts. Automaton has 244 states. Word has length 244 [2018-10-01 00:49:09,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:49:09,079 INFO L225 Difference]: With dead ends: 248 [2018-10-01 00:49:09,079 INFO L226 Difference]: Without dead ends: 246 [2018-10-01 00:49:09,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:49:09,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-10-01 00:49:09,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2018-10-01 00:49:09,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-10-01 00:49:09,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 246 transitions. [2018-10-01 00:49:09,082 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 246 transitions. Word has length 244 [2018-10-01 00:49:09,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:49:09,082 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 246 transitions. [2018-10-01 00:49:09,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 244 states. [2018-10-01 00:49:09,082 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 246 transitions. [2018-10-01 00:49:09,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-10-01 00:49:09,083 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:49:09,083 INFO L375 BasicCegarLoop]: trace histogram [242, 1, 1, 1] [2018-10-01 00:49:09,083 INFO L423 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:49:09,083 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:49:09,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1850631391, now seen corresponding path program 242 times [2018-10-01 00:49:09,084 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:49:09,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:49:09,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:09,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:49:09,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:11,168 INFO L134 CoverageAnalysis]: Checked inductivity of 29403 backedges. 0 proven. 29403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:11,168 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:49:11,168 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:49:11,175 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:49:11,302 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:49:11,303 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:49:11,308 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:11,839 INFO L134 CoverageAnalysis]: Checked inductivity of 29403 backedges. 0 proven. 29403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:11,859 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:11,860 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [244, 244] total 244 [2018-10-01 00:49:11,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 245 states [2018-10-01 00:49:11,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 245 interpolants. [2018-10-01 00:49:11,865 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:11,865 INFO L87 Difference]: Start difference. First operand 246 states and 246 transitions. Second operand 245 states. [2018-10-01 00:49:16,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:49:16,779 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-10-01 00:49:16,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2018-10-01 00:49:16,779 INFO L78 Accepts]: Start accepts. Automaton has 245 states. Word has length 245 [2018-10-01 00:49:16,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:49:16,780 INFO L225 Difference]: With dead ends: 249 [2018-10-01 00:49:16,780 INFO L226 Difference]: Without dead ends: 247 [2018-10-01 00:49:16,780 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:49:16,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-01 00:49:16,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-10-01 00:49:16,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-10-01 00:49:16,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-10-01 00:49:16,783 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 245 [2018-10-01 00:49:16,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:49:16,783 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-10-01 00:49:16,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 245 states. [2018-10-01 00:49:16,783 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-10-01 00:49:16,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-01 00:49:16,784 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:49:16,784 INFO L375 BasicCegarLoop]: trace histogram [243, 1, 1, 1] [2018-10-01 00:49:16,784 INFO L423 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:49:16,784 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:49:16,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1535000248, now seen corresponding path program 243 times [2018-10-01 00:49:16,785 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:49:16,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:49:16,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:16,785 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:49:16,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:18,942 INFO L134 CoverageAnalysis]: Checked inductivity of 29646 backedges. 0 proven. 29646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:18,942 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:49:18,943 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:49:18,969 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:49:19,361 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 123 check-sat command(s) [2018-10-01 00:49:19,361 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:49:19,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 29646 backedges. 0 proven. 29646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:19,875 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:19,875 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [245, 245] total 245 [2018-10-01 00:49:19,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 246 states [2018-10-01 00:49:19,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 246 interpolants. [2018-10-01 00:49:19,879 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:19,879 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 246 states. [2018-10-01 00:49:24,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:49:24,980 INFO L93 Difference]: Finished difference Result 250 states and 250 transitions. [2018-10-01 00:49:24,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 246 states. [2018-10-01 00:49:24,980 INFO L78 Accepts]: Start accepts. Automaton has 246 states. Word has length 246 [2018-10-01 00:49:24,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:49:24,980 INFO L225 Difference]: With dead ends: 250 [2018-10-01 00:49:24,981 INFO L226 Difference]: Without dead ends: 248 [2018-10-01 00:49:24,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:49:24,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-10-01 00:49:24,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2018-10-01 00:49:24,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-10-01 00:49:24,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-10-01 00:49:24,984 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 246 [2018-10-01 00:49:24,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:49:24,984 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-10-01 00:49:24,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 246 states. [2018-10-01 00:49:24,984 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-10-01 00:49:24,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-01 00:49:24,984 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:49:24,985 INFO L375 BasicCegarLoop]: trace histogram [244, 1, 1, 1] [2018-10-01 00:49:24,985 INFO L423 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:49:24,985 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:49:24,985 INFO L82 PathProgramCache]: Analyzing trace with hash -340369407, now seen corresponding path program 244 times [2018-10-01 00:49:24,985 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:49:24,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:49:24,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:24,985 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:49:24,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:26,989 INFO L134 CoverageAnalysis]: Checked inductivity of 29890 backedges. 0 proven. 29890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:26,989 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:49:26,989 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:49:26,998 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:49:27,127 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:49:27,127 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:49:27,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 29890 backedges. 0 proven. 29890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:27,800 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:27,800 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [246, 246] total 246 [2018-10-01 00:49:27,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 247 states [2018-10-01 00:49:27,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 247 interpolants. [2018-10-01 00:49:27,804 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:27,805 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 247 states. [2018-10-01 00:49:30,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:49:30,676 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-10-01 00:49:30,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2018-10-01 00:49:30,676 INFO L78 Accepts]: Start accepts. Automaton has 247 states. Word has length 247 [2018-10-01 00:49:30,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:49:30,677 INFO L225 Difference]: With dead ends: 251 [2018-10-01 00:49:30,677 INFO L226 Difference]: Without dead ends: 249 [2018-10-01 00:49:30,677 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:49:30,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-10-01 00:49:30,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-10-01 00:49:30,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-10-01 00:49:30,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-10-01 00:49:30,680 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 247 [2018-10-01 00:49:30,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:49:30,680 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-10-01 00:49:30,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 247 states. [2018-10-01 00:49:30,680 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-10-01 00:49:30,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-01 00:49:30,681 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:49:30,681 INFO L375 BasicCegarLoop]: trace histogram [245, 1, 1, 1] [2018-10-01 00:49:30,681 INFO L423 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:49:30,681 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:49:30,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1961519000, now seen corresponding path program 245 times [2018-10-01 00:49:30,682 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:49:30,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:49:30,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:30,682 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:49:30,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:32,841 INFO L134 CoverageAnalysis]: Checked inductivity of 30135 backedges. 0 proven. 30135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:32,841 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:49:32,841 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:49:32,852 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:49:33,256 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 124 check-sat command(s) [2018-10-01 00:49:33,256 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:49:33,269 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:33,787 INFO L134 CoverageAnalysis]: Checked inductivity of 30135 backedges. 0 proven. 30135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:33,807 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:33,807 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [247, 247] total 247 [2018-10-01 00:49:33,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 248 states [2018-10-01 00:49:33,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 248 interpolants. [2018-10-01 00:49:33,811 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:33,811 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 248 states. [2018-10-01 00:49:37,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:49:37,278 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2018-10-01 00:49:37,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 248 states. [2018-10-01 00:49:37,279 INFO L78 Accepts]: Start accepts. Automaton has 248 states. Word has length 248 [2018-10-01 00:49:37,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:49:37,279 INFO L225 Difference]: With dead ends: 252 [2018-10-01 00:49:37,279 INFO L226 Difference]: Without dead ends: 250 [2018-10-01 00:49:37,279 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:49:37,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-10-01 00:49:37,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2018-10-01 00:49:37,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-10-01 00:49:37,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 250 transitions. [2018-10-01 00:49:37,282 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 250 transitions. Word has length 248 [2018-10-01 00:49:37,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:49:37,282 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 250 transitions. [2018-10-01 00:49:37,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 248 states. [2018-10-01 00:49:37,283 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 250 transitions. [2018-10-01 00:49:37,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-01 00:49:37,283 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:49:37,283 INFO L375 BasicCegarLoop]: trace histogram [246, 1, 1, 1] [2018-10-01 00:49:37,283 INFO L423 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:49:37,284 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:49:37,284 INFO L82 PathProgramCache]: Analyzing trace with hash -677548831, now seen corresponding path program 246 times [2018-10-01 00:49:37,284 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:49:37,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:49:37,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:37,284 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:49:37,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:39,572 INFO L134 CoverageAnalysis]: Checked inductivity of 30381 backedges. 0 proven. 30381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:39,572 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:49:39,573 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:49:39,579 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:49:39,950 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 124 check-sat command(s) [2018-10-01 00:49:39,951 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:49:39,958 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:40,455 INFO L134 CoverageAnalysis]: Checked inductivity of 30381 backedges. 0 proven. 30381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:40,476 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:40,476 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [248, 248] total 248 [2018-10-01 00:49:40,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 249 states [2018-10-01 00:49:40,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 249 interpolants. [2018-10-01 00:49:40,480 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:40,480 INFO L87 Difference]: Start difference. First operand 250 states and 250 transitions. Second operand 249 states. [2018-10-01 00:49:45,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:49:45,209 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-10-01 00:49:45,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 249 states. [2018-10-01 00:49:45,210 INFO L78 Accepts]: Start accepts. Automaton has 249 states. Word has length 249 [2018-10-01 00:49:45,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:49:45,210 INFO L225 Difference]: With dead ends: 253 [2018-10-01 00:49:45,210 INFO L226 Difference]: Without dead ends: 251 [2018-10-01 00:49:45,210 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:49:45,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-10-01 00:49:45,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-10-01 00:49:45,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-01 00:49:45,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-10-01 00:49:45,213 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 249 [2018-10-01 00:49:45,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:49:45,214 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-10-01 00:49:45,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 249 states. [2018-10-01 00:49:45,214 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-10-01 00:49:45,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-01 00:49:45,215 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:49:45,215 INFO L375 BasicCegarLoop]: trace histogram [247, 1, 1, 1] [2018-10-01 00:49:45,215 INFO L423 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:49:45,215 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:49:45,215 INFO L82 PathProgramCache]: Analyzing trace with hash 470820744, now seen corresponding path program 247 times [2018-10-01 00:49:45,215 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:49:45,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:49:45,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:45,216 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:49:45,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:47,311 INFO L134 CoverageAnalysis]: Checked inductivity of 30628 backedges. 0 proven. 30628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:47,311 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:49:47,312 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:49:47,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:49:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:47,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:48,055 INFO L134 CoverageAnalysis]: Checked inductivity of 30628 backedges. 0 proven. 30628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:48,076 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:48,077 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [249, 249] total 249 [2018-10-01 00:49:48,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 250 states [2018-10-01 00:49:48,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 250 interpolants. [2018-10-01 00:49:48,080 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:48,080 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 250 states. [2018-10-01 00:49:52,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:49:52,058 INFO L93 Difference]: Finished difference Result 254 states and 254 transitions. [2018-10-01 00:49:52,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 250 states. [2018-10-01 00:49:52,059 INFO L78 Accepts]: Start accepts. Automaton has 250 states. Word has length 250 [2018-10-01 00:49:52,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:49:52,059 INFO L225 Difference]: With dead ends: 254 [2018-10-01 00:49:52,059 INFO L226 Difference]: Without dead ends: 252 [2018-10-01 00:49:52,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:49:52,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-10-01 00:49:52,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2018-10-01 00:49:52,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-10-01 00:49:52,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 252 transitions. [2018-10-01 00:49:52,062 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 252 transitions. Word has length 250 [2018-10-01 00:49:52,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:49:52,062 INFO L480 AbstractCegarLoop]: Abstraction has 252 states and 252 transitions. [2018-10-01 00:49:52,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 250 states. [2018-10-01 00:49:52,062 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 252 transitions. [2018-10-01 00:49:52,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-01 00:49:52,063 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:49:52,063 INFO L375 BasicCegarLoop]: trace histogram [248, 1, 1, 1] [2018-10-01 00:49:52,064 INFO L423 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:49:52,064 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:49:52,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1710539201, now seen corresponding path program 248 times [2018-10-01 00:49:52,064 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:49:52,064 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:49:52,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:52,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:49:52,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:54,248 INFO L134 CoverageAnalysis]: Checked inductivity of 30876 backedges. 0 proven. 30876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:54,248 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:49:54,249 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:49:54,257 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:49:54,387 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:49:54,387 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:49:54,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 30876 backedges. 0 proven. 30876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:54,945 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:54,945 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [250, 250] total 250 [2018-10-01 00:49:54,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 251 states [2018-10-01 00:49:54,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 251 interpolants. [2018-10-01 00:49:54,950 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:54,950 INFO L87 Difference]: Start difference. First operand 252 states and 252 transitions. Second operand 251 states. [2018-10-01 00:49:59,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:49:59,042 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-10-01 00:49:59,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 251 states. [2018-10-01 00:49:59,042 INFO L78 Accepts]: Start accepts. Automaton has 251 states. Word has length 251 [2018-10-01 00:49:59,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:49:59,043 INFO L225 Difference]: With dead ends: 255 [2018-10-01 00:49:59,043 INFO L226 Difference]: Without dead ends: 253 [2018-10-01 00:49:59,043 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:49:59,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-10-01 00:49:59,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-10-01 00:49:59,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-10-01 00:49:59,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-10-01 00:49:59,046 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 251 [2018-10-01 00:49:59,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:49:59,046 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-10-01 00:49:59,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 251 states. [2018-10-01 00:49:59,046 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-10-01 00:49:59,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-01 00:49:59,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:49:59,047 INFO L375 BasicCegarLoop]: trace histogram [249, 1, 1, 1] [2018-10-01 00:49:59,047 INFO L423 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:49:59,047 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:49:59,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1487105704, now seen corresponding path program 249 times [2018-10-01 00:49:59,047 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:49:59,047 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:49:59,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:59,048 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:49:59,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 31125 backedges. 0 proven. 31125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:01,167 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:01,167 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:50:01,173 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:50:01,579 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 126 check-sat command(s) [2018-10-01 00:50:01,580 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:50:01,586 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:02,094 INFO L134 CoverageAnalysis]: Checked inductivity of 31125 backedges. 0 proven. 31125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:02,115 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:02,115 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [251, 251] total 251 [2018-10-01 00:50:02,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 252 states [2018-10-01 00:50:02,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 252 interpolants. [2018-10-01 00:50:02,119 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:02,120 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 252 states. [2018-10-01 00:50:06,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:06,559 INFO L93 Difference]: Finished difference Result 256 states and 256 transitions. [2018-10-01 00:50:06,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 252 states. [2018-10-01 00:50:06,559 INFO L78 Accepts]: Start accepts. Automaton has 252 states. Word has length 252 [2018-10-01 00:50:06,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:06,560 INFO L225 Difference]: With dead ends: 256 [2018-10-01 00:50:06,560 INFO L226 Difference]: Without dead ends: 254 [2018-10-01 00:50:06,560 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:50:06,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-10-01 00:50:06,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2018-10-01 00:50:06,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-10-01 00:50:06,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2018-10-01 00:50:06,563 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 252 [2018-10-01 00:50:06,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:06,563 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2018-10-01 00:50:06,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 252 states. [2018-10-01 00:50:06,563 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2018-10-01 00:50:06,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-01 00:50:06,564 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:06,564 INFO L375 BasicCegarLoop]: trace histogram [250, 1, 1, 1] [2018-10-01 00:50:06,564 INFO L423 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:06,564 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:06,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1144365407, now seen corresponding path program 250 times [2018-10-01 00:50:06,564 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:06,564 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:06,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:06,565 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:50:06,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:08,732 INFO L134 CoverageAnalysis]: Checked inductivity of 31375 backedges. 0 proven. 31375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:08,733 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:08,733 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:50:08,740 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:50:08,873 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:50:08,873 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:50:08,880 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:09,404 INFO L134 CoverageAnalysis]: Checked inductivity of 31375 backedges. 0 proven. 31375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:09,424 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:09,424 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [252, 252] total 252 [2018-10-01 00:50:09,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 253 states [2018-10-01 00:50:09,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 253 interpolants. [2018-10-01 00:50:09,428 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:09,429 INFO L87 Difference]: Start difference. First operand 254 states and 254 transitions. Second operand 253 states. [2018-10-01 00:50:14,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:14,816 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-10-01 00:50:14,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 253 states. [2018-10-01 00:50:14,816 INFO L78 Accepts]: Start accepts. Automaton has 253 states. Word has length 253 [2018-10-01 00:50:14,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:14,816 INFO L225 Difference]: With dead ends: 257 [2018-10-01 00:50:14,816 INFO L226 Difference]: Without dead ends: 255 [2018-10-01 00:50:14,817 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:50:14,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-10-01 00:50:14,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-10-01 00:50:14,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-10-01 00:50:14,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-10-01 00:50:14,820 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 253 [2018-10-01 00:50:14,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:14,820 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-10-01 00:50:14,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has 253 states. [2018-10-01 00:50:14,820 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-10-01 00:50:14,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-01 00:50:14,820 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:14,821 INFO L375 BasicCegarLoop]: trace histogram [251, 1, 1, 1] [2018-10-01 00:50:14,821 INFO L423 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:14,821 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:14,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1115591224, now seen corresponding path program 251 times [2018-10-01 00:50:14,821 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:14,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:14,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:14,822 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:50:14,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:16,948 INFO L134 CoverageAnalysis]: Checked inductivity of 31626 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:16,948 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:16,948 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:50:16,955 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:50:17,373 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 127 check-sat command(s) [2018-10-01 00:50:17,374 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:50:17,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:17,898 INFO L134 CoverageAnalysis]: Checked inductivity of 31626 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:17,918 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:17,918 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [253, 253] total 253 [2018-10-01 00:50:17,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 254 states [2018-10-01 00:50:17,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 254 interpolants. [2018-10-01 00:50:17,922 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:17,923 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 254 states. [2018-10-01 00:50:23,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:23,373 INFO L93 Difference]: Finished difference Result 258 states and 258 transitions. [2018-10-01 00:50:23,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2018-10-01 00:50:23,373 INFO L78 Accepts]: Start accepts. Automaton has 254 states. Word has length 254 [2018-10-01 00:50:23,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:23,373 INFO L225 Difference]: With dead ends: 258 [2018-10-01 00:50:23,374 INFO L226 Difference]: Without dead ends: 256 [2018-10-01 00:50:23,374 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:50:23,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-10-01 00:50:23,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2018-10-01 00:50:23,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-10-01 00:50:23,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 256 transitions. [2018-10-01 00:50:23,377 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 256 transitions. Word has length 254 [2018-10-01 00:50:23,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:23,377 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 256 transitions. [2018-10-01 00:50:23,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 254 states. [2018-10-01 00:50:23,377 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 256 transitions. [2018-10-01 00:50:23,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-10-01 00:50:23,378 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:23,378 INFO L375 BasicCegarLoop]: trace histogram [252, 1, 1, 1] [2018-10-01 00:50:23,378 INFO L423 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:23,378 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:23,378 INFO L82 PathProgramCache]: Analyzing trace with hash -223591551, now seen corresponding path program 252 times [2018-10-01 00:50:23,378 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:23,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:23,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:23,379 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:50:23,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 31878 backedges. 0 proven. 31878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:25,718 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:25,718 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:50:25,725 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:50:26,111 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2018-10-01 00:50:26,111 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:50:26,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 31878 backedges. 0 proven. 31878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:26,670 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:26,670 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [254, 254] total 254 [2018-10-01 00:50:26,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 255 states [2018-10-01 00:50:26,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 255 interpolants. [2018-10-01 00:50:26,674 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:26,674 INFO L87 Difference]: Start difference. First operand 256 states and 256 transitions. Second operand 255 states. [2018-10-01 00:50:31,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:31,711 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-10-01 00:50:31,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2018-10-01 00:50:31,712 INFO L78 Accepts]: Start accepts. Automaton has 255 states. Word has length 255 [2018-10-01 00:50:31,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:31,712 INFO L225 Difference]: With dead ends: 259 [2018-10-01 00:50:31,712 INFO L226 Difference]: Without dead ends: 257 [2018-10-01 00:50:31,712 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 00:50:31,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-10-01 00:50:31,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-10-01 00:50:31,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-10-01 00:50:31,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2018-10-01 00:50:31,715 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 255 [2018-10-01 00:50:31,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:31,715 INFO L480 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2018-10-01 00:50:31,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 255 states. [2018-10-01 00:50:31,716 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2018-10-01 00:50:31,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-10-01 00:50:31,716 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:31,716 INFO L375 BasicCegarLoop]: trace histogram [253, 1, 1, 1] [2018-10-01 00:50:31,716 INFO L423 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:31,717 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:31,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1658594536, now seen corresponding path program 253 times [2018-10-01 00:50:31,717 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:31,717 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:31,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:31,717 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:50:31,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:33,950 INFO L134 CoverageAnalysis]: Checked inductivity of 32131 backedges. 0 proven. 32131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:33,950 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:33,950 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:50:33,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:50:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:34,093 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:34,670 INFO L134 CoverageAnalysis]: Checked inductivity of 32131 backedges. 0 proven. 32131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:34,689 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:34,690 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [255, 255] total 255 [2018-10-01 00:50:34,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 256 states [2018-10-01 00:50:34,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2018-10-01 00:50:34,694 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:34,694 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 256 states. [2018-10-01 00:50:39,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:39,386 INFO L93 Difference]: Finished difference Result 260 states and 260 transitions. [2018-10-01 00:50:39,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2018-10-01 00:50:39,386 INFO L78 Accepts]: Start accepts. Automaton has 256 states. Word has length 256 [2018-10-01 00:50:39,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:39,386 INFO L225 Difference]: With dead ends: 260 [2018-10-01 00:50:39,387 INFO L226 Difference]: Without dead ends: 258 [2018-10-01 00:50:39,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:50:39,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-10-01 00:50:39,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2018-10-01 00:50:39,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2018-10-01 00:50:39,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 258 transitions. [2018-10-01 00:50:39,390 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 258 transitions. Word has length 256 [2018-10-01 00:50:39,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:39,390 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 258 transitions. [2018-10-01 00:50:39,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has 256 states. [2018-10-01 00:50:39,390 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 258 transitions. [2018-10-01 00:50:39,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-10-01 00:50:39,391 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:39,391 INFO L375 BasicCegarLoop]: trace histogram [254, 1, 1, 1] [2018-10-01 00:50:39,391 INFO L423 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:39,391 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:39,391 INFO L82 PathProgramCache]: Analyzing trace with hash -123178911, now seen corresponding path program 254 times [2018-10-01 00:50:39,391 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:39,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:39,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:39,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:50:39,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:41,596 INFO L134 CoverageAnalysis]: Checked inductivity of 32385 backedges. 0 proven. 32385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:41,596 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:41,596 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:50:41,604 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:50:41,739 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:50:41,739 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:50:41,745 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:42,270 INFO L134 CoverageAnalysis]: Checked inductivity of 32385 backedges. 0 proven. 32385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:42,292 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:42,292 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [256, 256] total 256 [2018-10-01 00:50:42,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 257 states [2018-10-01 00:50:42,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 257 interpolants. [2018-10-01 00:50:42,297 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:42,297 INFO L87 Difference]: Start difference. First operand 258 states and 258 transitions. Second operand 257 states. [2018-10-01 00:50:47,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:47,337 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-10-01 00:50:47,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 257 states. [2018-10-01 00:50:47,337 INFO L78 Accepts]: Start accepts. Automaton has 257 states. Word has length 257 [2018-10-01 00:50:47,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:47,337 INFO L225 Difference]: With dead ends: 261 [2018-10-01 00:50:47,337 INFO L226 Difference]: Without dead ends: 259 [2018-10-01 00:50:47,338 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:50:47,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-10-01 00:50:47,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-10-01 00:50:47,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-10-01 00:50:47,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-10-01 00:50:47,341 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 257 [2018-10-01 00:50:47,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:47,341 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-10-01 00:50:47,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 257 states. [2018-10-01 00:50:47,341 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-10-01 00:50:47,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-01 00:50:47,342 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:47,342 INFO L375 BasicCegarLoop]: trace histogram [255, 1, 1, 1] [2018-10-01 00:50:47,342 INFO L423 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:47,342 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:47,343 INFO L82 PathProgramCache]: Analyzing trace with hash 476419080, now seen corresponding path program 255 times [2018-10-01 00:50:47,343 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:47,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:47,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:47,343 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:50:47,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 32640 backedges. 0 proven. 32640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:49,589 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:49,589 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:50:49,598 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:50:50,015 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 129 check-sat command(s) [2018-10-01 00:50:50,015 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:50:50,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:50,536 INFO L134 CoverageAnalysis]: Checked inductivity of 32640 backedges. 0 proven. 32640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:50,557 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:50,557 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [257, 257] total 257 [2018-10-01 00:50:50,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 258 states [2018-10-01 00:50:50,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 258 interpolants. [2018-10-01 00:50:50,563 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:50,563 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 258 states. [2018-10-01 00:50:55,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:55,579 INFO L93 Difference]: Finished difference Result 262 states and 262 transitions. [2018-10-01 00:50:55,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 258 states. [2018-10-01 00:50:55,580 INFO L78 Accepts]: Start accepts. Automaton has 258 states. Word has length 258 [2018-10-01 00:50:55,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:55,580 INFO L225 Difference]: With dead ends: 262 [2018-10-01 00:50:55,580 INFO L226 Difference]: Without dead ends: 260 [2018-10-01 00:50:55,581 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:50:55,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-10-01 00:50:55,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2018-10-01 00:50:55,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2018-10-01 00:50:55,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 260 transitions. [2018-10-01 00:50:55,584 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 260 transitions. Word has length 258 [2018-10-01 00:50:55,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:55,585 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 260 transitions. [2018-10-01 00:50:55,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 258 states. [2018-10-01 00:50:55,585 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 260 transitions. [2018-10-01 00:50:55,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-10-01 00:50:55,586 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:55,586 INFO L375 BasicCegarLoop]: trace histogram [256, 1, 1, 1] [2018-10-01 00:50:55,586 INFO L423 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:55,587 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:55,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1884087617, now seen corresponding path program 256 times [2018-10-01 00:50:55,587 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:55,587 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:55,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:55,588 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:50:55,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:57,858 INFO L134 CoverageAnalysis]: Checked inductivity of 32896 backedges. 0 proven. 32896 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:57,859 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:57,859 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:50:57,866 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:50:57,997 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:50:57,997 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:50:58,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:58,530 INFO L134 CoverageAnalysis]: Checked inductivity of 32896 backedges. 0 proven. 32896 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:58,550 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:58,551 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [258, 258] total 258 [2018-10-01 00:50:58,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 259 states [2018-10-01 00:50:58,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 259 interpolants. [2018-10-01 00:50:58,555 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:58,555 INFO L87 Difference]: Start difference. First operand 260 states and 260 transitions. Second operand 259 states. [2018-10-01 00:51:03,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:51:03,499 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2018-10-01 00:51:03,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 259 states. [2018-10-01 00:51:03,499 INFO L78 Accepts]: Start accepts. Automaton has 259 states. Word has length 259 [2018-10-01 00:51:03,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:51:03,500 INFO L225 Difference]: With dead ends: 263 [2018-10-01 00:51:03,500 INFO L226 Difference]: Without dead ends: 261 [2018-10-01 00:51:03,500 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:51:03,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-10-01 00:51:03,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-10-01 00:51:03,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-10-01 00:51:03,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 261 transitions. [2018-10-01 00:51:03,504 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 261 transitions. Word has length 259 [2018-10-01 00:51:03,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:51:03,504 INFO L480 AbstractCegarLoop]: Abstraction has 261 states and 261 transitions. [2018-10-01 00:51:03,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 259 states. [2018-10-01 00:51:03,504 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 261 transitions. [2018-10-01 00:51:03,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-10-01 00:51:03,505 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:51:03,505 INFO L375 BasicCegarLoop]: trace histogram [257, 1, 1, 1] [2018-10-01 00:51:03,505 INFO L423 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:51:03,505 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:51:03,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1722827992, now seen corresponding path program 257 times [2018-10-01 00:51:03,505 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:51:03,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:51:03,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:03,506 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:51:03,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:51:05,913 INFO L134 CoverageAnalysis]: Checked inductivity of 33153 backedges. 0 proven. 33153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:05,914 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:51:05,914 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:51:05,922 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:51:06,385 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 130 check-sat command(s) [2018-10-01 00:51:06,385 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:51:06,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:51:06,921 INFO L134 CoverageAnalysis]: Checked inductivity of 33153 backedges. 0 proven. 33153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:06,943 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:51:06,943 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [259, 259] total 259 [2018-10-01 00:51:06,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 260 states [2018-10-01 00:51:06,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 260 interpolants. [2018-10-01 00:51:06,947 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:51:06,947 INFO L87 Difference]: Start difference. First operand 261 states and 261 transitions. Second operand 260 states. [2018-10-01 00:51:12,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:51:12,429 INFO L93 Difference]: Finished difference Result 264 states and 264 transitions. [2018-10-01 00:51:12,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 260 states. [2018-10-01 00:51:12,429 INFO L78 Accepts]: Start accepts. Automaton has 260 states. Word has length 260 [2018-10-01 00:51:12,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:51:12,430 INFO L225 Difference]: With dead ends: 264 [2018-10-01 00:51:12,430 INFO L226 Difference]: Without dead ends: 262 [2018-10-01 00:51:12,430 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 00:51:12,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-10-01 00:51:12,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2018-10-01 00:51:12,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-10-01 00:51:12,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 262 transitions. [2018-10-01 00:51:12,433 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 262 transitions. Word has length 260 [2018-10-01 00:51:12,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:51:12,433 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 262 transitions. [2018-10-01 00:51:12,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 260 states. [2018-10-01 00:51:12,434 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 262 transitions. [2018-10-01 00:51:12,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-10-01 00:51:12,434 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:51:12,434 INFO L375 BasicCegarLoop]: trace histogram [258, 1, 1, 1] [2018-10-01 00:51:12,434 INFO L423 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:51:12,435 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:51:12,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1868062175, now seen corresponding path program 258 times [2018-10-01 00:51:12,435 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:51:12,435 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:51:12,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:12,435 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:51:12,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:51:14,656 INFO L134 CoverageAnalysis]: Checked inductivity of 33411 backedges. 0 proven. 33411 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:14,656 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:51:14,656 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:51:14,663 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:51:15,075 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 130 check-sat command(s) [2018-10-01 00:51:15,076 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:51:15,083 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:51:15,695 INFO L134 CoverageAnalysis]: Checked inductivity of 33411 backedges. 0 proven. 33411 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:15,716 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:51:15,716 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [260, 260] total 260 [2018-10-01 00:51:15,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 261 states [2018-10-01 00:51:15,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 261 interpolants. [2018-10-01 00:51:15,720 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:51:15,720 INFO L87 Difference]: Start difference. First operand 262 states and 262 transitions. Second operand 261 states. [2018-10-01 00:51:20,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:51:20,872 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-10-01 00:51:20,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 261 states. [2018-10-01 00:51:20,872 INFO L78 Accepts]: Start accepts. Automaton has 261 states. Word has length 261 [2018-10-01 00:51:20,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:51:20,873 INFO L225 Difference]: With dead ends: 265 [2018-10-01 00:51:20,873 INFO L226 Difference]: Without dead ends: 263 [2018-10-01 00:51:20,873 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:51:20,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-10-01 00:51:20,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-10-01 00:51:20,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-10-01 00:51:20,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-10-01 00:51:20,876 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 261 [2018-10-01 00:51:20,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:51:20,876 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-10-01 00:51:20,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has 261 states. [2018-10-01 00:51:20,876 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-10-01 00:51:20,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-01 00:51:20,877 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:51:20,877 INFO L375 BasicCegarLoop]: trace histogram [259, 1, 1, 1] [2018-10-01 00:51:20,877 INFO L423 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:51:20,877 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:51:20,877 INFO L82 PathProgramCache]: Analyzing trace with hash -2075354552, now seen corresponding path program 259 times [2018-10-01 00:51:20,877 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:51:20,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:51:20,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:20,878 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:51:20,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:51:23,132 INFO L134 CoverageAnalysis]: Checked inductivity of 33670 backedges. 0 proven. 33670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:23,132 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:51:23,132 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:51:23,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:51:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:51:23,305 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:51:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 33670 backedges. 0 proven. 33670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:23,851 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:51:23,851 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [261, 261] total 261 [2018-10-01 00:51:23,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 262 states [2018-10-01 00:51:23,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 262 interpolants. [2018-10-01 00:51:23,855 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:51:23,856 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 262 states. [2018-10-01 00:51:28,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:51:28,250 INFO L93 Difference]: Finished difference Result 266 states and 266 transitions. [2018-10-01 00:51:28,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 262 states. [2018-10-01 00:51:28,251 INFO L78 Accepts]: Start accepts. Automaton has 262 states. Word has length 262 [2018-10-01 00:51:28,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:51:28,251 INFO L225 Difference]: With dead ends: 266 [2018-10-01 00:51:28,251 INFO L226 Difference]: Without dead ends: 264 [2018-10-01 00:51:28,251 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:51:28,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-10-01 00:51:28,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2018-10-01 00:51:28,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-10-01 00:51:28,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 264 transitions. [2018-10-01 00:51:28,254 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 264 transitions. Word has length 262 [2018-10-01 00:51:28,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:51:28,254 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 264 transitions. [2018-10-01 00:51:28,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 262 states. [2018-10-01 00:51:28,254 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 264 transitions. [2018-10-01 00:51:28,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-01 00:51:28,255 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:51:28,255 INFO L375 BasicCegarLoop]: trace histogram [260, 1, 1, 1] [2018-10-01 00:51:28,255 INFO L423 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:51:28,255 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:51:28,255 INFO L82 PathProgramCache]: Analyzing trace with hash 88516353, now seen corresponding path program 260 times [2018-10-01 00:51:28,255 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:51:28,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:51:28,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:28,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:51:28,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:51:31,081 INFO L134 CoverageAnalysis]: Checked inductivity of 33930 backedges. 0 proven. 33930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:31,081 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:51:31,081 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:51:31,088 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:51:31,222 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:51:31,222 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:51:31,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:51:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 33930 backedges. 0 proven. 33930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:31,778 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:51:31,778 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [262, 262] total 262 [2018-10-01 00:51:31,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 263 states [2018-10-01 00:51:31,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 263 interpolants. [2018-10-01 00:51:31,782 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:51:31,782 INFO L87 Difference]: Start difference. First operand 264 states and 264 transitions. Second operand 263 states. [2018-10-01 00:51:36,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:51:36,288 INFO L93 Difference]: Finished difference Result 267 states and 267 transitions. [2018-10-01 00:51:36,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 263 states. [2018-10-01 00:51:36,288 INFO L78 Accepts]: Start accepts. Automaton has 263 states. Word has length 263 [2018-10-01 00:51:36,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:51:36,289 INFO L225 Difference]: With dead ends: 267 [2018-10-01 00:51:36,289 INFO L226 Difference]: Without dead ends: 265 [2018-10-01 00:51:36,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time [2018-10-01 00:51:36,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-10-01 00:51:36,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-10-01 00:51:36,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-10-01 00:51:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 265 transitions. [2018-10-01 00:51:36,292 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 265 transitions. Word has length 263 [2018-10-01 00:51:36,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:51:36,292 INFO L480 AbstractCegarLoop]: Abstraction has 265 states and 265 transitions. [2018-10-01 00:51:36,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has 263 states. [2018-10-01 00:51:36,292 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 265 transitions. [2018-10-01 00:51:36,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-10-01 00:51:36,293 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:51:36,293 INFO L375 BasicCegarLoop]: trace histogram [261, 1, 1, 1] [2018-10-01 00:51:36,293 INFO L423 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:51:36,293 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:51:36,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1550962328, now seen corresponding path program 261 times [2018-10-01 00:51:36,294 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:51:36,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:51:36,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:36,294 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:51:36,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:51:38,627 INFO L134 CoverageAnalysis]: Checked inductivity of 34191 backedges. 0 proven. 34191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:38,628 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:51:38,628 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:51:38,670 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:51:39,109 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 132 check-sat command(s) [2018-10-01 00:51:39,109 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:51:39,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:51:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 34191 backedges. 0 proven. 34191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:39,671 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:51:39,671 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [263, 263] total 263 [2018-10-01 00:51:39,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 264 states [2018-10-01 00:51:39,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 264 interpolants. [2018-10-01 00:51:39,676 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:51:39,676 INFO L87 Difference]: Start difference. First operand 265 states and 265 transitions. Second operand 264 states. [2018-10-01 00:51:44,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:51:44,880 INFO L93 Difference]: Finished difference Result 268 states and 268 transitions. [2018-10-01 00:51:44,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 264 states. [2018-10-01 00:51:44,880 INFO L78 Accepts]: Start accepts. Automaton has 264 states. Word has length 264 [2018-10-01 00:51:44,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:51:44,881 INFO L225 Difference]: With dead ends: 268 [2018-10-01 00:51:44,881 INFO L226 Difference]: Without dead ends: 266 [2018-10-01 00:51:44,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 00:51:44,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-10-01 00:51:44,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2018-10-01 00:51:44,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-10-01 00:51:44,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 266 transitions. [2018-10-01 00:51:44,884 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 266 transitions. Word has length 264 [2018-10-01 00:51:44,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:51:44,884 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 266 transitions. [2018-10-01 00:51:44,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 264 states. [2018-10-01 00:51:44,884 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 266 transitions. [2018-10-01 00:51:44,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-10-01 00:51:44,885 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:51:44,885 INFO L375 BasicCegarLoop]: trace histogram [262, 1, 1, 1] [2018-10-01 00:51:44,885 INFO L423 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:51:44,885 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:51:44,885 INFO L82 PathProgramCache]: Analyzing trace with hash -835193887, now seen corresponding path program 262 times [2018-10-01 00:51:44,885 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:51:44,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:51:44,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:44,886 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:51:44,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:51:47,361 INFO L134 CoverageAnalysis]: Checked inductivity of 34453 backedges. 0 proven. 34453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:47,361 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:51:47,362 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:51:47,372 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:51:47,508 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:51:47,509 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:51:47,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:51:48,111 INFO L134 CoverageAnalysis]: Checked inductivity of 34453 backedges. 0 proven. 34453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:48,131 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:51:48,131 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [264, 264] total 264 [2018-10-01 00:51:48,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 265 states [2018-10-01 00:51:48,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 265 interpolants. [2018-10-01 00:51:48,136 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:51:48,136 INFO L87 Difference]: Start difference. First operand 266 states and 266 transitions. Second operand 265 states. [2018-10-01 00:51:51,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:51:51,570 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-10-01 00:51:51,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 265 states. [2018-10-01 00:51:51,571 INFO L78 Accepts]: Start accepts. Automaton has 265 states. Word has length 265 [2018-10-01 00:51:51,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:51:51,571 INFO L225 Difference]: With dead ends: 269 [2018-10-01 00:51:51,571 INFO L226 Difference]: Without dead ends: 267 [2018-10-01 00:51:51,571 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time [2018-10-01 00:51:51,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-10-01 00:51:51,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-10-01 00:51:51,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-10-01 00:51:51,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2018-10-01 00:51:51,574 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 265 [2018-10-01 00:51:51,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:51:51,575 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2018-10-01 00:51:51,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 265 states. [2018-10-01 00:51:51,575 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2018-10-01 00:51:51,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-10-01 00:51:51,575 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:51:51,575 INFO L375 BasicCegarLoop]: trace histogram [263, 1, 1, 1] [2018-10-01 00:51:51,576 INFO L423 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:51:51,576 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:51:51,576 INFO L82 PathProgramCache]: Analyzing trace with hash -121208696, now seen corresponding path program 263 times [2018-10-01 00:51:51,576 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:51:51,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:51:51,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:51,576 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:51:51,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-01 00:51:52,333 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-01 00:51:52,337 WARN L206 ceAbstractionStarter]: Timeout [2018-10-01 00:51:52,338 INFO L202 PluginConnector]: Adding new model overflow1.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.10 12:51:52 BoogieIcfgContainer [2018-10-01 00:51:52,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-01 00:51:52,338 INFO L168 Benchmark]: Toolchain (without parser) took 798524.00 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 197.7 MB). Free memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: 460.7 MB). Peak memory consumption was 658.4 MB. Max. memory is 7.1 GB. [2018-10-01 00:51:52,340 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.26 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 00:51:52,341 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.45 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 00:51:52,341 INFO L168 Benchmark]: Boogie Preprocessor took 20.15 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 00:51:52,341 INFO L168 Benchmark]: RCFGBuilder took 194.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-01 00:51:52,342 INFO L168 Benchmark]: TraceAbstraction took 798260.20 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 197.7 MB). Free memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: 439.6 MB). Peak memory consumption was 637.2 MB. Max. memory is 7.1 GB. [2018-10-01 00:51:52,344 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 0.26 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. * Boogie Procedure Inliner took 43.45 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 20.15 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 194.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 798260.20 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 197.7 MB). Free memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: 439.6 MB). Peak memory consumption was 637.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 31]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 31). Cancelled while BasicCegarLoop was analyzing trace of length 267 with TraceHistMax 263, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 265 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 798.1s OverallTime, 264 OverallIterations, 263 TraceHistogramMax, 410.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 789 SDtfs, 0 SDslu, 13882 SDs, 0 SdLazy, 48861 SolverSat, 621 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69956 GetRequests, 35240 SyntacticMatches, 0 SemanticMatches, 34716 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 314.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=267occurred in iteration=263, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 263 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 2.1s SsaConstructionTime, 33.2s SatisfiabilityAnalysisTime, 337.7s InterpolantComputationTime, 70481 NumberOfCodeBlocks, 70481 NumberOfCodeBlocksAsserted, 9215 NumberOfCheckSat, 69956 ConstructedInterpolants, 0 QuantifiedInterpolants, 36868910 SizeOfPredicates, 262 NumberOfNonLiveVariables, 142528 ConjunctsInSsa, 34977 ConjunctsInUnsatCore, 525 InterpolantComputations, 1 PerfectInterpolantSequences, 0/6063728 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/overflow1.i_3.bplTransformedIcfg_BEv2_4.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-01_00-51-52-352.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/overflow1.i_3.bplTransformedIcfg_BEv2_4.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-01_00-51-52-352.csv Completed graceful shutdown