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/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2eb0a67 [2018-10-03 09:06:58,503 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-03 09:06:58,505 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-03 09:06:58,517 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-03 09:06:58,517 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-03 09:06:58,518 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-03 09:06:58,520 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-03 09:06:58,522 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-03 09:06:58,523 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-03 09:06:58,524 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-03 09:06:58,525 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-03 09:06:58,555 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 [2018-10-03 09:06:58,583 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-03 09:06:58,584 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-03 09:06:58,585 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-03 09:06:58,585 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-03 09:06:58,585 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-03 09:06:58,586 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-03 09:06:58,586 INFO L133 SettingsManager]: * Use SBE=true [2018-10-03 09:06:58,586 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-03 09:06:58,588 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-03 09:06:58,588 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-03 09:06:58,588 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-03 09:06:58,589 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-03 09:06:58,589 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-03 09:06:58,589 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-03 09:06:58,589 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-03 09:06:58,590 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-03 09:06:58,590 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-03 09:06:58,590 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-03 09:06:58,590 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-03 09:06:58,591 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-03 09:06:58,591 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-03 09:06:58,591 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-03 09:06:58,591 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-03 09:06:58,591 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-03 09:06:58,592 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-03 09:06:58,592 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-03 09:06:58,592 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-03 09:06:58,592 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-03 09:06:58,592 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-03 09:06:58,594 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-03 09:06:58,594 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-03 09:06:58,658 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-03 09:06:58,673 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-03 09:06:58,678 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-03 09:06:58,679 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-03 09:06:58,680 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-03 09:06:58,681 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-10-03 09:06:58,681 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl' [2018-10-03 09:06:58,739 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-03 09:06:58,742 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-03 09:06:58,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-03 09:06:58,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-03 09:06:58,743 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-03 09:06:58,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:06:58" (1/1) ... [2018-10-03 09:06:58,774 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:06:58" (1/1) ... [2018-10-03 09:06:58,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-03 09:06:58,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-03 09:06:58,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-03 09:06:58,783 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-03 09:06:58,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:06:58" (1/1) ... [2018-10-03 09:06:58,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:06:58" (1/1) ... [2018-10-03 09:06:58,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:06:58" (1/1) ... [2018-10-03 09:06:58,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:06:58" (1/1) ... [2018-10-03 09:06:58,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:06:58" (1/1) ... [2018-10-03 09:06:58,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:06:58" (1/1) ... [2018-10-03 09:06:58,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:06:58" (1/1) ... [2018-10-03 09:06:58,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-03 09:06:58,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-03 09:06:58,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-03 09:06:58,804 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-03 09:06:58,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:06:58" (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 [2018-10-03 09:06:58,881 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-03 09:06:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-03 09:06:58,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-03 09:06:59,154 INFO L340 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-03 09:06:59,155 INFO L202 PluginConnector]: Adding new model fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:06:59 BoogieIcfgContainer [2018-10-03 09:06:59,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-03 09:06:59,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-03 09:06:59,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-03 09:06:59,160 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-03 09:06:59,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:06:58" (1/2) ... [2018-10-03 09:06:59,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59660566 and model type fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 09:06:59, skipping insertion in model container [2018-10-03 09:06:59,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:06:59" (2/2) ... [2018-10-03 09:06:59,164 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-10-03 09:06:59,174 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-03 09:06:59,183 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-03 09:06:59,244 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-03 09:06:59,245 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-03 09:06:59,246 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-03 09:06:59,246 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-03 09:06:59,246 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-03 09:06:59,246 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-03 09:06:59,246 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-03 09:06:59,247 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-03 09:06:59,247 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-03 09:06:59,265 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-10-03 09:06:59,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-03 09:06:59,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:59,283 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-03 09:06:59,287 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:59,295 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:59,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1807861163, now seen corresponding path program 1 times [2018-10-03 09:06:59,300 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:59,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:59,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:59,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:59,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:59,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:59,493 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-03 09:06:59,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-03 09:06:59,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-03 09:06:59,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-03 09:06:59,532 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:59,535 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-10-03 09:06:59,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:59,616 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2018-10-03 09:06:59,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-03 09:06:59,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-10-03 09:06:59,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:59,628 INFO L225 Difference]: With dead ends: 17 [2018-10-03 09:06:59,629 INFO L226 Difference]: Without dead ends: 10 [2018-10-03 09:06:59,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-03 09:06:59,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-03 09:06:59,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-03 09:06:59,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-03 09:06:59,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2018-10-03 09:06:59,671 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2018-10-03 09:06:59,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:59,672 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-10-03 09:06:59,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-03 09:06:59,672 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2018-10-03 09:06:59,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-03 09:06:59,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:59,673 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-10-03 09:06:59,674 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:59,674 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:59,674 INFO L82 PathProgramCache]: Analyzing trace with hash 89245487, now seen corresponding path program 1 times [2018-10-03 09:06:59,674 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:59,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:59,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:59,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:59,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:59,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:59,789 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:59,789 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:06:59,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:59,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:59,959 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:59,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-03 09:06:59,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-03 09:06:59,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-03 09:06:59,961 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:59,961 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 4 states. [2018-10-03 09:06:59,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:59,994 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2018-10-03 09:06:59,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-03 09:06:59,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-10-03 09:06:59,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:59,995 INFO L225 Difference]: With dead ends: 17 [2018-10-03 09:06:59,996 INFO L226 Difference]: Without dead ends: 12 [2018-10-03 09:06:59,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 2 [2018-10-03 09:06:59,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-03 09:06:59,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-03 09:06:59,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-03 09:07:00,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2018-10-03 09:07:00,000 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2018-10-03 09:07:00,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:00,001 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2018-10-03 09:07:00,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-03 09:07:00,001 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2018-10-03 09:07:00,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-03 09:07:00,002 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:00,002 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-10-03 09:07:00,002 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:00,002 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:00,003 INFO L82 PathProgramCache]: Analyzing trace with hash 2061989811, now seen corresponding path program 2 times [2018-10-03 09:07:00,003 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:00,003 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:00,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:00,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:00,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:00,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:00,123 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-03 09:07:00,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-03 09:07:00,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-03 09:07:00,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-03 09:07:00,124 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:00,125 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 5 states. [2018-10-03 09:07:00,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:00,261 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2018-10-03 09:07:00,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-03 09:07:00,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-10-03 09:07:00,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:00,263 INFO L225 Difference]: With dead ends: 32 [2018-10-03 09:07:00,263 INFO L226 Difference]: Without dead ends: 27 [2018-10-03 09:07:00,264 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 3 [2018-10-03 09:07:00,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-03 09:07:00,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2018-10-03 09:07:00,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-03 09:07:00,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2018-10-03 09:07:00,273 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2018-10-03 09:07:00,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:00,273 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2018-10-03 09:07:00,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-03 09:07:00,274 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2018-10-03 09:07:00,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-03 09:07:00,274 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:00,274 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-10-03 09:07:00,275 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:00,275 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:00,275 INFO L82 PathProgramCache]: Analyzing trace with hash 2062049393, now seen corresponding path program 1 times [2018-10-03 09:07:00,275 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:00,276 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:00,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:00,277 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:00,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-03 09:07:00,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-03 09:07:00,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-03 09:07:00,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-03 09:07:00,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-03 09:07:00,359 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:00,359 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 4 states. [2018-10-03 09:07:00,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:00,444 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2018-10-03 09:07:00,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-03 09:07:00,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-10-03 09:07:00,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:00,446 INFO L225 Difference]: With dead ends: 26 [2018-10-03 09:07:00,447 INFO L226 Difference]: Without dead ends: 24 [2018-10-03 09:07:00,447 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 3 [2018-10-03 09:07:00,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-03 09:07:00,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2018-10-03 09:07:00,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-03 09:07:00,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-10-03 09:07:00,458 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 11 [2018-10-03 09:07:00,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:00,459 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-10-03 09:07:00,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-03 09:07:00,459 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-10-03 09:07:00,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-03 09:07:00,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:00,460 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2018-10-03 09:07:00,460 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:00,461 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:00,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1980186676, now seen corresponding path program 1 times [2018-10-03 09:07:00,461 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:00,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:00,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:00,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:00,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:00,587 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:00,587 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:00,587 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 [2018-10-03 09:07:00,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:00,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:00,700 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:00,730 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:00,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-03 09:07:00,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-03 09:07:00,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-03 09:07:00,731 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:00,731 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2018-10-03 09:07:00,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:00,841 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2018-10-03 09:07:00,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-03 09:07:00,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-10-03 09:07:00,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:00,842 INFO L225 Difference]: With dead ends: 37 [2018-10-03 09:07:00,842 INFO L226 Difference]: Without dead ends: 23 [2018-10-03 09:07:00,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 3 [2018-10-03 09:07:00,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-03 09:07:00,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-03 09:07:00,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-03 09:07:00,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-10-03 09:07:00,849 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2018-10-03 09:07:00,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:00,852 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-10-03 09:07:00,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-03 09:07:00,852 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-10-03 09:07:00,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-03 09:07:00,853 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:00,853 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:00,854 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:00,854 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:00,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1317950664, now seen corresponding path program 2 times [2018-10-03 09:07:00,854 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:00,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:00,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:00,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:00,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:01,005 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:01,005 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 [2018-10-03 09:07:01,014 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:07:01,054 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:07:01,054 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:01,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:01,174 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:01,199 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:01,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-03 09:07:01,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-03 09:07:01,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-03 09:07:01,201 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:01,201 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2018-10-03 09:07:01,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:01,244 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2018-10-03 09:07:01,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-03 09:07:01,245 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-10-03 09:07:01,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:01,246 INFO L225 Difference]: With dead ends: 39 [2018-10-03 09:07:01,246 INFO L226 Difference]: Without dead ends: 25 [2018-10-03 09:07:01,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 4 [2018-10-03 09:07:01,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-03 09:07:01,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-03 09:07:01,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-03 09:07:01,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-10-03 09:07:01,252 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2018-10-03 09:07:01,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:01,253 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-10-03 09:07:01,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-03 09:07:01,253 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-10-03 09:07:01,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-03 09:07:01,254 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:01,254 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:01,255 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:01,255 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:01,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1142069956, now seen corresponding path program 3 times [2018-10-03 09:07:01,255 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:01,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:01,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:01,256 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:01,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:01,357 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:01,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:01,358 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:01,374 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:07:01,470 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-10-03 09:07:01,471 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:01,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:01,584 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:01,614 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:01,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-03 09:07:01,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-03 09:07:01,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-03 09:07:01,615 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:01,616 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 7 states. [2018-10-03 09:07:01,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:01,723 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-10-03 09:07:01,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-03 09:07:01,729 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2018-10-03 09:07:01,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:01,730 INFO L225 Difference]: With dead ends: 41 [2018-10-03 09:07:01,730 INFO L226 Difference]: Without dead ends: 27 [2018-10-03 09:07:01,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 5 [2018-10-03 09:07:01,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-03 09:07:01,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-03 09:07:01,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-03 09:07:01,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-10-03 09:07:01,737 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2018-10-03 09:07:01,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:01,737 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-10-03 09:07:01,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-03 09:07:01,737 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-10-03 09:07:01,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-03 09:07:01,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:01,738 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:01,739 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:01,739 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:01,739 INFO L82 PathProgramCache]: Analyzing trace with hash -375565888, now seen corresponding path program 4 times [2018-10-03 09:07:01,739 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:01,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:01,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:01,740 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:01,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:01,944 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:01,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:01,945 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 [2018-10-03 09:07:01,961 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:07:02,013 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:07:02,014 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:02,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:02,344 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:02,369 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:02,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-03 09:07:02,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-03 09:07:02,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-03 09:07:02,371 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:02,371 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 8 states. [2018-10-03 09:07:02,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:02,413 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-10-03 09:07:02,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-03 09:07:02,416 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-10-03 09:07:02,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:02,417 INFO L225 Difference]: With dead ends: 43 [2018-10-03 09:07:02,417 INFO L226 Difference]: Without dead ends: 29 [2018-10-03 09:07:02,417 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 6 [2018-10-03 09:07:02,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-03 09:07:02,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-03 09:07:02,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-03 09:07:02,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-10-03 09:07:02,423 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 26 [2018-10-03 09:07:02,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:02,424 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-10-03 09:07:02,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-03 09:07:02,424 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-10-03 09:07:02,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-03 09:07:02,425 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:02,426 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:02,426 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:02,426 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:02,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1465268668, now seen corresponding path program 5 times [2018-10-03 09:07:02,426 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:02,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:02,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:02,427 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:02,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:02,559 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:02,559 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:02,559 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 [2018-10-03 09:07:02,569 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:07:02,603 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-03 09:07:02,604 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:02,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:02,725 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:02,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-03 09:07:02,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-03 09:07:02,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-03 09:07:02,726 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:02,726 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 9 states. [2018-10-03 09:07:02,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:02,795 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2018-10-03 09:07:02,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-03 09:07:02,797 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-10-03 09:07:02,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:02,798 INFO L225 Difference]: With dead ends: 45 [2018-10-03 09:07:02,798 INFO L226 Difference]: Without dead ends: 31 [2018-10-03 09:07:02,798 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7 [2018-10-03 09:07:02,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-03 09:07:02,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-03 09:07:02,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-03 09:07:02,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-10-03 09:07:02,804 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 28 [2018-10-03 09:07:02,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:02,804 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-10-03 09:07:02,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-03 09:07:02,804 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-10-03 09:07:02,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-03 09:07:02,805 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:02,805 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:02,806 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:02,806 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:02,806 INFO L82 PathProgramCache]: Analyzing trace with hash 980751032, now seen corresponding path program 6 times [2018-10-03 09:07:02,806 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:02,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:02,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:02,808 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:02,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:02,941 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:02,941 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:02,942 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 [2018-10-03 09:07:02,950 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:07:03,077 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-03 09:07:03,078 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:03,081 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:03,312 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:03,335 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:03,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-03 09:07:03,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-03 09:07:03,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-03 09:07:03,336 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:03,336 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 10 states. [2018-10-03 09:07:03,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:03,376 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2018-10-03 09:07:03,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-03 09:07:03,376 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2018-10-03 09:07:03,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:03,377 INFO L225 Difference]: With dead ends: 47 [2018-10-03 09:07:03,377 INFO L226 Difference]: Without dead ends: 33 [2018-10-03 09:07:03,378 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime 8 [2018-10-03 09:07:03,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-03 09:07:03,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-03 09:07:03,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-03 09:07:03,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-10-03 09:07:03,385 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 30 [2018-10-03 09:07:03,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:03,386 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-10-03 09:07:03,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-03 09:07:03,386 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-10-03 09:07:03,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-03 09:07:03,387 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:03,387 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:03,387 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:03,388 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:03,388 INFO L82 PathProgramCache]: Analyzing trace with hash -784229196, now seen corresponding path program 7 times [2018-10-03 09:07:03,388 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:03,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:03,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:03,389 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:03,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:03,569 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:03,569 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:03,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:03,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:03,691 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:03,711 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:03,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-03 09:07:03,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-03 09:07:03,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-03 09:07:03,713 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:03,713 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 11 states. [2018-10-03 09:07:03,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:03,764 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-10-03 09:07:03,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-03 09:07:03,768 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2018-10-03 09:07:03,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:03,769 INFO L225 Difference]: With dead ends: 49 [2018-10-03 09:07:03,769 INFO L226 Difference]: Without dead ends: 35 [2018-10-03 09:07:03,769 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 9 [2018-10-03 09:07:03,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-03 09:07:03,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-03 09:07:03,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-03 09:07:03,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-10-03 09:07:03,776 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 32 [2018-10-03 09:07:03,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:03,776 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-10-03 09:07:03,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-03 09:07:03,777 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-10-03 09:07:03,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-03 09:07:03,778 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:03,778 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:03,778 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:03,778 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:03,778 INFO L82 PathProgramCache]: Analyzing trace with hash -418146384, now seen corresponding path program 8 times [2018-10-03 09:07:03,779 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:03,779 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:03,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:03,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:03,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:03,992 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:03,993 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:03,993 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 [2018-10-03 09:07:04,004 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:07:04,031 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:07:04,031 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:04,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:04,094 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:04,114 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:04,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-03 09:07:04,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-03 09:07:04,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-03 09:07:04,115 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:04,115 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 12 states. [2018-10-03 09:07:04,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:04,151 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2018-10-03 09:07:04,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-03 09:07:04,151 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2018-10-03 09:07:04,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:04,152 INFO L225 Difference]: With dead ends: 51 [2018-10-03 09:07:04,152 INFO L226 Difference]: Without dead ends: 37 [2018-10-03 09:07:04,153 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 10 [2018-10-03 09:07:04,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-03 09:07:04,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-03 09:07:04,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-03 09:07:04,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-10-03 09:07:04,158 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 34 [2018-10-03 09:07:04,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:04,159 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-10-03 09:07:04,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-03 09:07:04,159 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-10-03 09:07:04,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-03 09:07:04,160 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:04,160 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:04,161 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:04,161 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:04,161 INFO L82 PathProgramCache]: Analyzing trace with hash -799882324, now seen corresponding path program 9 times [2018-10-03 09:07:04,161 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:04,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:04,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:04,162 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:04,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:04,350 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:04,350 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:04,350 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 [2018-10-03 09:07:04,359 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:07:04,430 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-10-03 09:07:04,431 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:04,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:04,597 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:04,618 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:04,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-03 09:07:04,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-03 09:07:04,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-03 09:07:04,619 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:04,619 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 13 states. [2018-10-03 09:07:04,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:04,813 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2018-10-03 09:07:04,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-03 09:07:04,818 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2018-10-03 09:07:04,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:04,818 INFO L225 Difference]: With dead ends: 53 [2018-10-03 09:07:04,819 INFO L226 Difference]: Without dead ends: 39 [2018-10-03 09:07:04,819 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 11 [2018-10-03 09:07:04,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-03 09:07:04,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-03 09:07:04,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-03 09:07:04,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2018-10-03 09:07:04,829 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 36 [2018-10-03 09:07:04,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:04,830 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2018-10-03 09:07:04,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-03 09:07:04,830 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2018-10-03 09:07:04,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-03 09:07:04,831 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:04,831 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:04,831 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:04,833 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:04,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1719066792, now seen corresponding path program 10 times [2018-10-03 09:07:04,834 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:04,834 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:04,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:04,835 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:04,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:05,022 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:05,023 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:05,023 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:05,031 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:07:05,063 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:07:05,064 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:05,067 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:05,233 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:05,254 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:05,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-03 09:07:05,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-03 09:07:05,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-03 09:07:05,255 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:05,255 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 14 states. [2018-10-03 09:07:05,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:05,335 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2018-10-03 09:07:05,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-03 09:07:05,336 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2018-10-03 09:07:05,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:05,337 INFO L225 Difference]: With dead ends: 55 [2018-10-03 09:07:05,337 INFO L226 Difference]: Without dead ends: 41 [2018-10-03 09:07:05,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 12 [2018-10-03 09:07:05,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-03 09:07:05,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-03 09:07:05,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-03 09:07:05,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-10-03 09:07:05,344 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 38 [2018-10-03 09:07:05,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:05,344 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-10-03 09:07:05,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-03 09:07:05,344 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-10-03 09:07:05,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-03 09:07:05,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:05,345 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:05,346 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:05,346 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:05,346 INFO L82 PathProgramCache]: Analyzing trace with hash 67612324, now seen corresponding path program 11 times [2018-10-03 09:07:05,346 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:05,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:05,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:05,347 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:05,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:05,614 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:05,614 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:05,648 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:07:05,679 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-03 09:07:05,679 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:05,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:05,780 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:05,801 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:05,801 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-03 09:07:05,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-03 09:07:05,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-03 09:07:05,802 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:05,802 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 15 states. [2018-10-03 09:07:05,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:05,835 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2018-10-03 09:07:05,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-03 09:07:05,835 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2018-10-03 09:07:05,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:05,836 INFO L225 Difference]: With dead ends: 57 [2018-10-03 09:07:05,836 INFO L226 Difference]: Without dead ends: 43 [2018-10-03 09:07:05,836 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 13 [2018-10-03 09:07:05,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-03 09:07:05,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-03 09:07:05,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-03 09:07:05,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2018-10-03 09:07:05,842 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 40 [2018-10-03 09:07:05,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:05,843 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2018-10-03 09:07:05,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-03 09:07:05,843 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2018-10-03 09:07:05,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-03 09:07:05,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:05,844 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:05,844 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:05,844 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:05,844 INFO L82 PathProgramCache]: Analyzing trace with hash -2137199200, now seen corresponding path program 12 times [2018-10-03 09:07:05,844 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:05,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:05,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:05,845 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:05,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:06,079 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:06,079 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:06,079 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:06,087 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:07:06,175 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2018-10-03 09:07:06,176 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:06,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:06,283 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:06,304 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:06,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-03 09:07:06,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-03 09:07:06,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-03 09:07:06,305 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:06,305 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 16 states. [2018-10-03 09:07:06,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:06,676 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2018-10-03 09:07:06,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-03 09:07:06,676 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2018-10-03 09:07:06,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:06,677 INFO L225 Difference]: With dead ends: 59 [2018-10-03 09:07:06,678 INFO L226 Difference]: Without dead ends: 45 [2018-10-03 09:07:06,678 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 14 [2018-10-03 09:07:06,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-03 09:07:06,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-03 09:07:06,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-03 09:07:06,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2018-10-03 09:07:06,683 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 42 [2018-10-03 09:07:06,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:06,684 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2018-10-03 09:07:06,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-03 09:07:06,684 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2018-10-03 09:07:06,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-03 09:07:06,685 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:06,685 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:06,686 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:06,686 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:06,686 INFO L82 PathProgramCache]: Analyzing trace with hash 752770460, now seen corresponding path program 13 times [2018-10-03 09:07:06,686 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:06,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:06,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:06,687 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:06,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:07,212 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:07,212 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:07,212 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:07,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:07,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:07,536 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:07,557 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:07,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-03 09:07:07,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-03 09:07:07,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-03 09:07:07,558 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:07,558 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 17 states. [2018-10-03 09:07:07,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:07,623 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2018-10-03 09:07:07,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-03 09:07:07,623 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2018-10-03 09:07:07,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:07,624 INFO L225 Difference]: With dead ends: 61 [2018-10-03 09:07:07,624 INFO L226 Difference]: Without dead ends: 47 [2018-10-03 09:07:07,624 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.3s impTime 15 [2018-10-03 09:07:07,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-03 09:07:07,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-03 09:07:07,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-03 09:07:07,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2018-10-03 09:07:07,630 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 44 [2018-10-03 09:07:07,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:07,630 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2018-10-03 09:07:07,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-03 09:07:07,630 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2018-10-03 09:07:07,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-03 09:07:07,631 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:07,631 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:07,632 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:07,632 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:07,632 INFO L82 PathProgramCache]: Analyzing trace with hash -830226792, now seen corresponding path program 14 times [2018-10-03 09:07:07,632 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:07,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:07,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:07,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:07,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:07,905 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:07,906 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:07,906 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:07,920 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:07:07,950 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:07:07,950 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:07,952 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:08,033 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:08,053 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:08,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-03 09:07:08,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-03 09:07:08,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-03 09:07:08,054 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:08,054 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 18 states. [2018-10-03 09:07:08,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:08,145 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2018-10-03 09:07:08,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-03 09:07:08,149 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 46 [2018-10-03 09:07:08,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:08,149 INFO L225 Difference]: With dead ends: 63 [2018-10-03 09:07:08,149 INFO L226 Difference]: Without dead ends: 49 [2018-10-03 09:07:08,150 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 16 [2018-10-03 09:07:08,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-03 09:07:08,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-03 09:07:08,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-03 09:07:08,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2018-10-03 09:07:08,156 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 46 [2018-10-03 09:07:08,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:08,157 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2018-10-03 09:07:08,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-03 09:07:08,157 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2018-10-03 09:07:08,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-03 09:07:08,158 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:08,158 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:08,158 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:08,158 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:08,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1672163180, now seen corresponding path program 15 times [2018-10-03 09:07:08,158 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:08,159 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:08,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:08,159 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:08,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:08,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:08,544 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:08,551 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:07:08,638 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2018-10-03 09:07:08,639 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:08,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:09,144 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:09,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-03 09:07:09,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-03 09:07:09,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-03 09:07:09,145 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:09,147 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 19 states. [2018-10-03 09:07:09,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:09,355 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2018-10-03 09:07:09,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-03 09:07:09,355 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2018-10-03 09:07:09,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:09,356 INFO L225 Difference]: With dead ends: 65 [2018-10-03 09:07:09,356 INFO L226 Difference]: Without dead ends: 51 [2018-10-03 09:07:09,356 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.2s impTime 17 [2018-10-03 09:07:09,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-03 09:07:09,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-03 09:07:09,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-03 09:07:09,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-10-03 09:07:09,361 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 48 [2018-10-03 09:07:09,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:09,361 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-10-03 09:07:09,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-03 09:07:09,362 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-10-03 09:07:09,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-03 09:07:09,362 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:09,363 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:09,363 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:09,363 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:09,363 INFO L82 PathProgramCache]: Analyzing trace with hash 975786896, now seen corresponding path program 16 times [2018-10-03 09:07:09,363 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:09,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:09,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:09,364 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:09,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:09,710 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:09,711 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:09,711 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:09,718 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:07:09,750 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:07:09,750 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:09,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:09,850 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:09,870 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:09,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-03 09:07:09,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-03 09:07:09,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-03 09:07:09,871 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:09,871 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 20 states. [2018-10-03 09:07:09,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:09,944 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2018-10-03 09:07:09,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-03 09:07:09,945 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 50 [2018-10-03 09:07:09,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:09,945 INFO L225 Difference]: With dead ends: 67 [2018-10-03 09:07:09,945 INFO L226 Difference]: Without dead ends: 53 [2018-10-03 09:07:09,946 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 18 [2018-10-03 09:07:09,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-03 09:07:09,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-03 09:07:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-03 09:07:09,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2018-10-03 09:07:09,951 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 50 [2018-10-03 09:07:09,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:09,951 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2018-10-03 09:07:09,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-03 09:07:09,951 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2018-10-03 09:07:09,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-03 09:07:09,952 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:09,952 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:09,952 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:09,952 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:09,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1259796596, now seen corresponding path program 17 times [2018-10-03 09:07:09,953 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:09,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:09,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:09,954 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:09,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:11,006 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:11,007 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:11,007 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 [2018-10-03 09:07:11,015 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:07:11,060 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-03 09:07:11,060 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:11,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:11,287 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:11,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-03 09:07:11,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-03 09:07:11,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-03 09:07:11,288 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:11,288 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 21 states. [2018-10-03 09:07:11,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:11,362 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2018-10-03 09:07:11,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-03 09:07:11,363 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 52 [2018-10-03 09:07:11,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:11,364 INFO L225 Difference]: With dead ends: 69 [2018-10-03 09:07:11,364 INFO L226 Difference]: Without dead ends: 55 [2018-10-03 09:07:11,365 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.7s impTime 19 [2018-10-03 09:07:11,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-03 09:07:11,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-03 09:07:11,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-03 09:07:11,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2018-10-03 09:07:11,370 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 52 [2018-10-03 09:07:11,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:11,370 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2018-10-03 09:07:11,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-03 09:07:11,370 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2018-10-03 09:07:11,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-03 09:07:11,371 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:11,371 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:11,371 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:11,371 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:11,371 INFO L82 PathProgramCache]: Analyzing trace with hash 2123082888, now seen corresponding path program 18 times [2018-10-03 09:07:11,371 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:11,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:11,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:11,372 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:11,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:11,965 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:11,966 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:11,966 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 [2018-10-03 09:07:11,973 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:07:12,020 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2018-10-03 09:07:12,020 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:12,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:12,164 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:12,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-03 09:07:12,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-03 09:07:12,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-03 09:07:12,165 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:12,165 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 22 states. [2018-10-03 09:07:12,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:12,254 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2018-10-03 09:07:12,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-03 09:07:12,257 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 54 [2018-10-03 09:07:12,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:12,257 INFO L225 Difference]: With dead ends: 71 [2018-10-03 09:07:12,257 INFO L226 Difference]: Without dead ends: 57 [2018-10-03 09:07:12,258 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 20 [2018-10-03 09:07:12,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-03 09:07:12,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-03 09:07:12,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-03 09:07:12,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2018-10-03 09:07:12,262 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 54 [2018-10-03 09:07:12,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:12,262 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2018-10-03 09:07:12,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-03 09:07:12,263 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2018-10-03 09:07:12,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-03 09:07:12,263 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:12,264 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:12,264 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:12,264 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:12,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1780023940, now seen corresponding path program 19 times [2018-10-03 09:07:12,264 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:12,265 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:12,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:12,266 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:12,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:12,673 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:12,674 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:12,674 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:12,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:12,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:12,848 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:12,868 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:12,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-03 09:07:12,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-03 09:07:12,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-03 09:07:12,869 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:12,869 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 23 states. [2018-10-03 09:07:12,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:12,942 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2018-10-03 09:07:12,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-03 09:07:12,943 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 56 [2018-10-03 09:07:12,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:12,943 INFO L225 Difference]: With dead ends: 73 [2018-10-03 09:07:12,944 INFO L226 Difference]: Without dead ends: 59 [2018-10-03 09:07:12,944 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 21 [2018-10-03 09:07:12,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-03 09:07:12,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-03 09:07:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-03 09:07:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2018-10-03 09:07:12,948 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 56 [2018-10-03 09:07:12,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:12,949 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2018-10-03 09:07:12,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-03 09:07:12,949 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2018-10-03 09:07:12,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-03 09:07:12,950 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:12,950 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:12,950 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:12,950 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:12,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1482110592, now seen corresponding path program 20 times [2018-10-03 09:07:12,950 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:12,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:12,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:12,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:12,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:13,383 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:13,383 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:13,383 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 [2018-10-03 09:07:13,390 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:07:13,438 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:07:13,439 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:13,441 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:13,738 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:13,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-03 09:07:13,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-03 09:07:13,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-03 09:07:13,739 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:13,739 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 24 states. [2018-10-03 09:07:13,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:13,781 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2018-10-03 09:07:13,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-03 09:07:13,781 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 58 [2018-10-03 09:07:13,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:13,782 INFO L225 Difference]: With dead ends: 75 [2018-10-03 09:07:13,782 INFO L226 Difference]: Without dead ends: 61 [2018-10-03 09:07:13,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.2s impTime 22 [2018-10-03 09:07:13,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-03 09:07:13,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-03 09:07:13,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-03 09:07:13,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2018-10-03 09:07:13,786 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 58 [2018-10-03 09:07:13,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:13,786 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2018-10-03 09:07:13,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-03 09:07:13,786 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2018-10-03 09:07:13,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-03 09:07:13,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:13,787 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:13,787 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:13,787 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:13,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1067269764, now seen corresponding path program 21 times [2018-10-03 09:07:13,787 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:13,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:13,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:13,789 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:13,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:14,440 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:14,440 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:14,440 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:14,448 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:07:14,498 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2018-10-03 09:07:14,498 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:14,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:14,617 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:14,639 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:14,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-03 09:07:14,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-03 09:07:14,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-03 09:07:14,640 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:14,640 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 25 states. [2018-10-03 09:07:14,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:14,678 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2018-10-03 09:07:14,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-03 09:07:14,679 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 60 [2018-10-03 09:07:14,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:14,680 INFO L225 Difference]: With dead ends: 77 [2018-10-03 09:07:14,680 INFO L226 Difference]: Without dead ends: 63 [2018-10-03 09:07:14,680 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 23 [2018-10-03 09:07:14,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-03 09:07:14,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-03 09:07:14,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-03 09:07:14,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2018-10-03 09:07:14,683 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 60 [2018-10-03 09:07:14,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:14,683 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2018-10-03 09:07:14,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-03 09:07:14,684 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2018-10-03 09:07:14,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-03 09:07:14,684 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:14,684 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:14,684 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:14,685 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:14,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1837192584, now seen corresponding path program 22 times [2018-10-03 09:07:14,685 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:14,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:14,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:14,686 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:14,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:15,018 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:15,018 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:15,018 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:15,027 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:07:15,078 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:07:15,079 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:15,081 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:15,209 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:15,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-03 09:07:15,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-03 09:07:15,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-03 09:07:15,210 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:15,210 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 26 states. [2018-10-03 09:07:15,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:15,277 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2018-10-03 09:07:15,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-03 09:07:15,277 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 62 [2018-10-03 09:07:15,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:15,278 INFO L225 Difference]: With dead ends: 79 [2018-10-03 09:07:15,278 INFO L226 Difference]: Without dead ends: 65 [2018-10-03 09:07:15,278 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 24 [2018-10-03 09:07:15,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-03 09:07:15,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-03 09:07:15,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-03 09:07:15,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2018-10-03 09:07:15,283 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 62 [2018-10-03 09:07:15,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:15,283 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2018-10-03 09:07:15,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-03 09:07:15,283 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2018-10-03 09:07:15,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-03 09:07:15,283 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:15,284 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:15,284 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:15,284 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:15,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1296319604, now seen corresponding path program 23 times [2018-10-03 09:07:15,284 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:15,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:15,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:15,285 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:15,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:16,158 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:16,158 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:16,159 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:16,166 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:07:16,225 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-03 09:07:16,225 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:16,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:16,349 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:16,370 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:16,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-03 09:07:16,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-03 09:07:16,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-03 09:07:16,371 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:16,371 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 27 states. [2018-10-03 09:07:16,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:16,435 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2018-10-03 09:07:16,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-03 09:07:16,436 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 64 [2018-10-03 09:07:16,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:16,437 INFO L225 Difference]: With dead ends: 81 [2018-10-03 09:07:16,437 INFO L226 Difference]: Without dead ends: 67 [2018-10-03 09:07:16,437 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.5s impTime 25 [2018-10-03 09:07:16,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-03 09:07:16,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-03 09:07:16,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-03 09:07:16,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2018-10-03 09:07:16,443 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 64 [2018-10-03 09:07:16,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:16,443 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2018-10-03 09:07:16,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-03 09:07:16,443 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2018-10-03 09:07:16,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-03 09:07:16,444 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:16,444 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:16,444 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:16,444 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:16,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1829457776, now seen corresponding path program 24 times [2018-10-03 09:07:16,445 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:16,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:16,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:16,445 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:16,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:16,907 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:16,907 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:16,907 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:16,914 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:07:16,972 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2018-10-03 09:07:16,972 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:16,975 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:17,065 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:17,085 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:17,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-03 09:07:17,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-03 09:07:17,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-03 09:07:17,086 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:17,086 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 28 states. [2018-10-03 09:07:17,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:17,178 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2018-10-03 09:07:17,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-03 09:07:17,178 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 66 [2018-10-03 09:07:17,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:17,179 INFO L225 Difference]: With dead ends: 83 [2018-10-03 09:07:17,179 INFO L226 Difference]: Without dead ends: 69 [2018-10-03 09:07:17,180 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 26 [2018-10-03 09:07:17,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-03 09:07:17,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-03 09:07:17,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-03 09:07:17,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2018-10-03 09:07:17,184 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 66 [2018-10-03 09:07:17,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:17,184 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2018-10-03 09:07:17,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-03 09:07:17,184 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2018-10-03 09:07:17,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-03 09:07:17,185 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:17,185 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:17,185 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:17,185 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:17,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1220834452, now seen corresponding path program 25 times [2018-10-03 09:07:17,186 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:17,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:17,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:17,186 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:17,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:17,561 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:17,561 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:17,561 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:17,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:17,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:17,735 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:17,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-03 09:07:17,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-03 09:07:17,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-03 09:07:17,736 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:17,736 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 29 states. [2018-10-03 09:07:17,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:17,821 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2018-10-03 09:07:17,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-03 09:07:17,824 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 68 [2018-10-03 09:07:17,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:17,825 INFO L225 Difference]: With dead ends: 85 [2018-10-03 09:07:17,825 INFO L226 Difference]: Without dead ends: 71 [2018-10-03 09:07:17,826 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 27 [2018-10-03 09:07:17,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-03 09:07:17,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-03 09:07:17,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-03 09:07:17,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2018-10-03 09:07:17,830 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 68 [2018-10-03 09:07:17,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:17,831 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2018-10-03 09:07:17,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-03 09:07:17,831 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2018-10-03 09:07:17,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-03 09:07:17,831 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:17,831 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:17,832 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:17,832 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:17,832 INFO L82 PathProgramCache]: Analyzing trace with hash 910997608, now seen corresponding path program 26 times [2018-10-03 09:07:17,832 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:17,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:17,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:17,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:17,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:18,235 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:18,235 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:18,235 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:18,247 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:07:18,318 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:07:18,318 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:18,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:18,529 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:18,549 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:18,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-03 09:07:18,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-03 09:07:18,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-03 09:07:18,550 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:18,551 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 30 states. [2018-10-03 09:07:18,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:18,621 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2018-10-03 09:07:18,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-03 09:07:18,622 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 70 [2018-10-03 09:07:18,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:18,622 INFO L225 Difference]: With dead ends: 87 [2018-10-03 09:07:18,622 INFO L226 Difference]: Without dead ends: 73 [2018-10-03 09:07:18,623 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 28 [2018-10-03 09:07:18,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-03 09:07:18,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-03 09:07:18,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-03 09:07:18,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2018-10-03 09:07:18,627 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 70 [2018-10-03 09:07:18,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:18,627 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2018-10-03 09:07:18,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-03 09:07:18,628 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2018-10-03 09:07:18,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-03 09:07:18,628 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:18,628 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:18,629 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:18,629 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:18,629 INFO L82 PathProgramCache]: Analyzing trace with hash 902207076, now seen corresponding path program 27 times [2018-10-03 09:07:18,629 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:18,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:18,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:18,630 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:18,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:19,084 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:19,085 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:19,085 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 [2018-10-03 09:07:19,101 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:07:19,167 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2018-10-03 09:07:19,167 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:19,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:19,335 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:19,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-03 09:07:19,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-03 09:07:19,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-03 09:07:19,336 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:19,336 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 31 states. [2018-10-03 09:07:19,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:19,396 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2018-10-03 09:07:19,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-03 09:07:19,397 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 72 [2018-10-03 09:07:19,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:19,397 INFO L225 Difference]: With dead ends: 89 [2018-10-03 09:07:19,398 INFO L226 Difference]: Without dead ends: 75 [2018-10-03 09:07:19,398 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 29 [2018-10-03 09:07:19,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-03 09:07:19,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-03 09:07:19,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-03 09:07:19,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2018-10-03 09:07:19,403 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 72 [2018-10-03 09:07:19,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:19,404 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2018-10-03 09:07:19,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-03 09:07:19,404 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2018-10-03 09:07:19,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-03 09:07:19,405 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:19,405 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:19,405 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:19,405 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:19,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1044440416, now seen corresponding path program 28 times [2018-10-03 09:07:19,405 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:19,405 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:19,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:19,406 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:19,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:19,847 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:19,847 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:19,847 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:19,857 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:07:19,903 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:07:19,903 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:19,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:20,035 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:20,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-03 09:07:20,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-03 09:07:20,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-03 09:07:20,036 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:20,036 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 32 states. [2018-10-03 09:07:20,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:20,108 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2018-10-03 09:07:20,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-03 09:07:20,109 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 74 [2018-10-03 09:07:20,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:20,109 INFO L225 Difference]: With dead ends: 91 [2018-10-03 09:07:20,109 INFO L226 Difference]: Without dead ends: 77 [2018-10-03 09:07:20,110 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 30 [2018-10-03 09:07:20,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-03 09:07:20,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-03 09:07:20,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-03 09:07:20,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2018-10-03 09:07:20,114 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 74 [2018-10-03 09:07:20,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:20,115 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2018-10-03 09:07:20,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-03 09:07:20,115 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2018-10-03 09:07:20,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-03 09:07:20,115 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:20,115 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:20,116 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:20,116 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:20,116 INFO L82 PathProgramCache]: Analyzing trace with hash 291726684, now seen corresponding path program 29 times [2018-10-03 09:07:20,116 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:20,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:20,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:20,117 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:20,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:20,735 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:20,736 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:20,736 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:20,743 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:07:21,106 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-03 09:07:21,107 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:21,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:21,210 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:21,230 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:21,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-03 09:07:21,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-03 09:07:21,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-03 09:07:21,231 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:21,231 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 33 states. [2018-10-03 09:07:21,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:21,318 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2018-10-03 09:07:21,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-03 09:07:21,318 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 76 [2018-10-03 09:07:21,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:21,319 INFO L225 Difference]: With dead ends: 93 [2018-10-03 09:07:21,319 INFO L226 Difference]: Without dead ends: 79 [2018-10-03 09:07:21,319 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 31 [2018-10-03 09:07:21,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-03 09:07:21,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-03 09:07:21,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-03 09:07:21,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2018-10-03 09:07:21,324 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 76 [2018-10-03 09:07:21,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:21,325 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2018-10-03 09:07:21,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-03 09:07:21,325 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2018-10-03 09:07:21,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-03 09:07:21,325 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:21,325 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:21,326 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:21,326 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:21,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1511664040, now seen corresponding path program 30 times [2018-10-03 09:07:21,326 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:21,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:21,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:21,327 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:21,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:21,814 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:21,814 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 [2018-10-03 09:07:21,825 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:07:21,896 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2018-10-03 09:07:21,896 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:21,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:22,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:22,057 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:22,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-03 09:07:22,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-03 09:07:22,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-03 09:07:22,058 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:22,059 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 34 states. [2018-10-03 09:07:22,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:22,153 INFO L93 Difference]: Finished difference Result 95 states and 99 transitions. [2018-10-03 09:07:22,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-03 09:07:22,153 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 78 [2018-10-03 09:07:22,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:22,154 INFO L225 Difference]: With dead ends: 95 [2018-10-03 09:07:22,154 INFO L226 Difference]: Without dead ends: 81 [2018-10-03 09:07:22,155 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 32 [2018-10-03 09:07:22,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-03 09:07:22,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-03 09:07:22,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-03 09:07:22,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2018-10-03 09:07:22,159 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 78 [2018-10-03 09:07:22,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:22,159 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2018-10-03 09:07:22,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-03 09:07:22,159 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2018-10-03 09:07:22,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-03 09:07:22,160 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:22,160 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:22,160 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:22,160 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:22,160 INFO L82 PathProgramCache]: Analyzing trace with hash 596637780, now seen corresponding path program 31 times [2018-10-03 09:07:22,160 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:22,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:22,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:22,161 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:22,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:22,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:22,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:22,752 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 [2018-10-03 09:07:22,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:22,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:22,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:22,969 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:22,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-03 09:07:22,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-03 09:07:22,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-03 09:07:22,970 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:22,971 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 35 states. [2018-10-03 09:07:23,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:23,061 INFO L93 Difference]: Finished difference Result 97 states and 101 transitions. [2018-10-03 09:07:23,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-03 09:07:23,062 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 80 [2018-10-03 09:07:23,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:23,063 INFO L225 Difference]: With dead ends: 97 [2018-10-03 09:07:23,063 INFO L226 Difference]: Without dead ends: 83 [2018-10-03 09:07:23,063 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 33 [2018-10-03 09:07:23,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-03 09:07:23,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-03 09:07:23,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-03 09:07:23,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2018-10-03 09:07:23,069 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 80 [2018-10-03 09:07:23,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:23,069 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2018-10-03 09:07:23,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-03 09:07:23,069 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2018-10-03 09:07:23,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-03 09:07:23,070 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:23,070 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:23,070 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:23,070 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:23,071 INFO L82 PathProgramCache]: Analyzing trace with hash -549876912, now seen corresponding path program 32 times [2018-10-03 09:07:23,071 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:23,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:23,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:23,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:23,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:23,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:23,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:23,508 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 [2018-10-03 09:07:23,517 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:07:23,571 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:07:23,571 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:23,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:23,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:23,849 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:23,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-03 09:07:23,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-03 09:07:23,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-03 09:07:23,850 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:23,850 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 36 states. [2018-10-03 09:07:24,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:24,009 INFO L93 Difference]: Finished difference Result 99 states and 103 transitions. [2018-10-03 09:07:24,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-03 09:07:24,009 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 82 [2018-10-03 09:07:24,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:24,010 INFO L225 Difference]: With dead ends: 99 [2018-10-03 09:07:24,010 INFO L226 Difference]: Without dead ends: 85 [2018-10-03 09:07:24,011 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 34 [2018-10-03 09:07:24,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-03 09:07:24,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-03 09:07:24,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-03 09:07:24,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2018-10-03 09:07:24,015 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 82 [2018-10-03 09:07:24,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:24,015 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2018-10-03 09:07:24,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-03 09:07:24,016 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2018-10-03 09:07:24,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-03 09:07:24,016 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:24,016 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:24,016 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:24,016 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:24,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1456099148, now seen corresponding path program 33 times [2018-10-03 09:07:24,017 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:24,017 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:24,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:24,017 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:24,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:25,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:25,099 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:25,099 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:25,114 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:07:25,194 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2018-10-03 09:07:25,194 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:25,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:25,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:25,341 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:25,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-03 09:07:25,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-03 09:07:25,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-03 09:07:25,342 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:25,342 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 37 states. [2018-10-03 09:07:25,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:25,412 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2018-10-03 09:07:25,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-03 09:07:25,413 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 84 [2018-10-03 09:07:25,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:25,414 INFO L225 Difference]: With dead ends: 101 [2018-10-03 09:07:25,414 INFO L226 Difference]: Without dead ends: 87 [2018-10-03 09:07:25,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 35 [2018-10-03 09:07:25,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-03 09:07:25,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-03 09:07:25,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-03 09:07:25,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2018-10-03 09:07:25,419 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 84 [2018-10-03 09:07:25,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:25,419 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2018-10-03 09:07:25,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-03 09:07:25,419 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2018-10-03 09:07:25,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-03 09:07:25,420 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:25,420 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:25,420 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:25,420 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:25,421 INFO L82 PathProgramCache]: Analyzing trace with hash 758776904, now seen corresponding path program 34 times [2018-10-03 09:07:25,421 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:25,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:25,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:25,422 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:25,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:26,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:26,513 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:26,513 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:26,520 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:07:26,573 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:07:26,573 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:26,575 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:27,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:27,162 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:27,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-03 09:07:27,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-03 09:07:27,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-03 09:07:27,163 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:27,163 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand 38 states. [2018-10-03 09:07:27,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:27,274 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2018-10-03 09:07:27,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-03 09:07:27,274 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 86 [2018-10-03 09:07:27,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:27,275 INFO L225 Difference]: With dead ends: 103 [2018-10-03 09:07:27,275 INFO L226 Difference]: Without dead ends: 89 [2018-10-03 09:07:27,275 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 0.7s impTime 36 [2018-10-03 09:07:27,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-03 09:07:27,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-03 09:07:27,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-03 09:07:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2018-10-03 09:07:27,280 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 86 [2018-10-03 09:07:27,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:27,280 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2018-10-03 09:07:27,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-03 09:07:27,280 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2018-10-03 09:07:27,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-03 09:07:27,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:27,280 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:27,281 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:27,281 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:27,281 INFO L82 PathProgramCache]: Analyzing trace with hash 646998596, now seen corresponding path program 35 times [2018-10-03 09:07:27,281 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:27,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:27,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:27,282 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:27,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:28,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:28,927 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:28,927 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:28,934 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:07:29,032 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-03 09:07:29,033 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:29,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:29,203 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:29,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-03 09:07:29,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-03 09:07:29,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-03 09:07:29,204 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:29,204 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand 39 states. [2018-10-03 09:07:29,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:29,325 INFO L93 Difference]: Finished difference Result 105 states and 109 transitions. [2018-10-03 09:07:29,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-03 09:07:29,326 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 88 [2018-10-03 09:07:29,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:29,327 INFO L225 Difference]: With dead ends: 105 [2018-10-03 09:07:29,327 INFO L226 Difference]: Without dead ends: 91 [2018-10-03 09:07:29,327 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.4s impTime 37 [2018-10-03 09:07:29,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-03 09:07:29,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-03 09:07:29,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-03 09:07:29,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2018-10-03 09:07:29,332 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 88 [2018-10-03 09:07:29,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:29,332 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2018-10-03 09:07:29,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-03 09:07:29,332 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2018-10-03 09:07:29,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-03 09:07:29,333 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:29,333 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:29,333 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:29,333 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:29,333 INFO L82 PathProgramCache]: Analyzing trace with hash 602227008, now seen corresponding path program 36 times [2018-10-03 09:07:29,333 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:29,333 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:29,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:29,334 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:29,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:29,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1424 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:29,850 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:29,850 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:29,857 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:07:29,951 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2018-10-03 09:07:29,951 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:29,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:30,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1424 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:30,164 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:30,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-03 09:07:30,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-03 09:07:30,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-03 09:07:30,165 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:30,165 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 40 states. [2018-10-03 09:07:30,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:30,321 INFO L93 Difference]: Finished difference Result 107 states and 111 transitions. [2018-10-03 09:07:30,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-03 09:07:30,322 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 90 [2018-10-03 09:07:30,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:30,323 INFO L225 Difference]: With dead ends: 107 [2018-10-03 09:07:30,323 INFO L226 Difference]: Without dead ends: 93 [2018-10-03 09:07:30,323 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 38 [2018-10-03 09:07:30,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-03 09:07:30,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-03 09:07:30,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-03 09:07:30,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2018-10-03 09:07:30,328 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 90 [2018-10-03 09:07:30,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:30,328 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2018-10-03 09:07:30,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-03 09:07:30,328 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2018-10-03 09:07:30,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-03 09:07:30,329 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:30,329 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:30,329 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:30,329 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:30,329 INFO L82 PathProgramCache]: Analyzing trace with hash 526403900, now seen corresponding path program 37 times [2018-10-03 09:07:30,329 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:30,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:30,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:30,330 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:30,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:31,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:31,005 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:31,005 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 [2018-10-03 09:07:31,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:31,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:31,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:31,249 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:31,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-03 09:07:31,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-03 09:07:31,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-03 09:07:31,250 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:31,250 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand 41 states. [2018-10-03 09:07:31,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:31,346 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2018-10-03 09:07:31,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-03 09:07:31,347 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 92 [2018-10-03 09:07:31,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:31,348 INFO L225 Difference]: With dead ends: 109 [2018-10-03 09:07:31,348 INFO L226 Difference]: Without dead ends: 95 [2018-10-03 09:07:31,348 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 39 [2018-10-03 09:07:31,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-03 09:07:31,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-03 09:07:31,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-03 09:07:31,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2018-10-03 09:07:31,353 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 92 [2018-10-03 09:07:31,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:31,353 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2018-10-03 09:07:31,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-03 09:07:31,353 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2018-10-03 09:07:31,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-03 09:07:31,353 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:31,354 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:31,354 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:31,354 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:31,354 INFO L82 PathProgramCache]: Analyzing trace with hash 674841144, now seen corresponding path program 38 times [2018-10-03 09:07:31,354 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:31,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:31,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:31,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:31,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:32,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:32,276 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:32,276 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:32,283 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:07:32,345 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:07:32,346 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:32,348 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:32,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:32,555 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:32,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-03 09:07:32,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-03 09:07:32,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-03 09:07:32,556 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:32,556 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 42 states. [2018-10-03 09:07:32,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:32,768 INFO L93 Difference]: Finished difference Result 111 states and 115 transitions. [2018-10-03 09:07:32,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-03 09:07:32,769 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 94 [2018-10-03 09:07:32,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:32,769 INFO L225 Difference]: With dead ends: 111 [2018-10-03 09:07:32,769 INFO L226 Difference]: Without dead ends: 97 [2018-10-03 09:07:32,770 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 40 [2018-10-03 09:07:32,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-03 09:07:32,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-03 09:07:32,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-03 09:07:32,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2018-10-03 09:07:32,775 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 94 [2018-10-03 09:07:32,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:32,776 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2018-10-03 09:07:32,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-03 09:07:32,776 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2018-10-03 09:07:32,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-03 09:07:32,776 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:32,777 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:32,777 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:32,777 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:32,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1589111860, now seen corresponding path program 39 times [2018-10-03 09:07:32,777 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:32,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:32,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:32,778 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:32,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:33,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:33,812 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:33,812 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:33,819 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:07:34,033 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2018-10-03 09:07:34,033 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:34,036 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:34,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:34,288 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:34,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-03 09:07:34,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-03 09:07:34,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-03 09:07:34,289 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:34,289 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. Second operand 43 states. [2018-10-03 09:07:34,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:34,460 INFO L93 Difference]: Finished difference Result 113 states and 117 transitions. [2018-10-03 09:07:34,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-03 09:07:34,461 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 96 [2018-10-03 09:07:34,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:34,462 INFO L225 Difference]: With dead ends: 113 [2018-10-03 09:07:34,462 INFO L226 Difference]: Without dead ends: 99 [2018-10-03 09:07:34,462 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 41 [2018-10-03 09:07:34,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-03 09:07:34,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-03 09:07:34,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-03 09:07:34,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2018-10-03 09:07:34,466 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 96 [2018-10-03 09:07:34,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:34,466 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2018-10-03 09:07:34,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-03 09:07:34,467 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2018-10-03 09:07:34,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-03 09:07:34,467 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:34,467 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:34,468 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:34,468 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:34,468 INFO L82 PathProgramCache]: Analyzing trace with hash -265025744, now seen corresponding path program 40 times [2018-10-03 09:07:34,468 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:34,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:34,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:34,469 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:34,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:35,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:35,443 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:35,444 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 [2018-10-03 09:07:35,451 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:07:35,516 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:07:35,516 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:35,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:36,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:36,945 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:36,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-03 09:07:36,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-03 09:07:36,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-03 09:07:36,946 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:36,946 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand 44 states. [2018-10-03 09:07:38,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:38,049 INFO L93 Difference]: Finished difference Result 115 states and 119 transitions. [2018-10-03 09:07:38,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-03 09:07:38,049 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 98 [2018-10-03 09:07:38,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:38,050 INFO L225 Difference]: With dead ends: 115 [2018-10-03 09:07:38,050 INFO L226 Difference]: Without dead ends: 101 [2018-10-03 09:07:38,050 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 0.7s impTime 42 [2018-10-03 09:07:38,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-03 09:07:38,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-03 09:07:38,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-03 09:07:38,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2018-10-03 09:07:38,055 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 98 [2018-10-03 09:07:38,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:38,055 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2018-10-03 09:07:38,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-03 09:07:38,055 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2018-10-03 09:07:38,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-03 09:07:38,056 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:38,056 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:38,056 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:38,056 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:38,056 INFO L82 PathProgramCache]: Analyzing trace with hash 320164652, now seen corresponding path program 41 times [2018-10-03 09:07:38,056 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:38,056 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:38,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:38,057 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:38,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:39,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:39,735 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:39,735 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 [2018-10-03 09:07:39,743 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:07:39,841 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-03 09:07:39,841 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:39,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:40,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:40,037 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:40,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-03 09:07:40,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-03 09:07:40,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-03 09:07:40,038 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:40,038 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 45 states. [2018-10-03 09:07:40,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:40,156 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2018-10-03 09:07:40,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-03 09:07:40,157 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 100 [2018-10-03 09:07:40,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:40,158 INFO L225 Difference]: With dead ends: 117 [2018-10-03 09:07:40,158 INFO L226 Difference]: Without dead ends: 103 [2018-10-03 09:07:40,158 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime 43 [2018-10-03 09:07:40,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-03 09:07:40,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-03 09:07:40,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-03 09:07:40,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2018-10-03 09:07:40,163 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 100 [2018-10-03 09:07:40,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:40,164 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2018-10-03 09:07:40,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-03 09:07:40,164 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2018-10-03 09:07:40,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-03 09:07:40,165 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:40,165 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:40,165 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:40,165 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:40,165 INFO L82 PathProgramCache]: Analyzing trace with hash 47419432, now seen corresponding path program 42 times [2018-10-03 09:07:40,165 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:40,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:40,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:40,166 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:40,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:41,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:41,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:41,498 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 [2018-10-03 09:07:41,508 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:07:41,613 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 44 check-sat command(s) [2018-10-03 09:07:41,614 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:41,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:41,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:41,941 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:41,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-03 09:07:41,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-03 09:07:41,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-03 09:07:41,942 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:41,942 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand 46 states. [2018-10-03 09:07:42,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:42,027 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2018-10-03 09:07:42,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-03 09:07:42,027 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 102 [2018-10-03 09:07:42,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:42,028 INFO L225 Difference]: With dead ends: 119 [2018-10-03 09:07:42,028 INFO L226 Difference]: Without dead ends: 105 [2018-10-03 09:07:42,029 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 0.9s impTime 44 [2018-10-03 09:07:42,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-03 09:07:42,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-03 09:07:42,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-03 09:07:42,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2018-10-03 09:07:42,034 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 102 [2018-10-03 09:07:42,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:42,034 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2018-10-03 09:07:42,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-03 09:07:42,035 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2018-10-03 09:07:42,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-03 09:07:42,035 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:42,035 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:42,036 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:42,036 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:42,036 INFO L82 PathProgramCache]: Analyzing trace with hash -67731932, now seen corresponding path program 43 times [2018-10-03 09:07:42,036 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:42,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:42,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:42,037 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:42,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:43,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:43,089 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:43,089 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:43,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:43,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:43,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:43,356 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:43,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-03 09:07:43,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-03 09:07:43,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-03 09:07:43,357 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:43,357 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 47 states. [2018-10-03 09:07:43,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:43,431 INFO L93 Difference]: Finished difference Result 121 states and 125 transitions. [2018-10-03 09:07:43,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-03 09:07:43,431 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 104 [2018-10-03 09:07:43,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:43,433 INFO L225 Difference]: With dead ends: 121 [2018-10-03 09:07:43,433 INFO L226 Difference]: Without dead ends: 107 [2018-10-03 09:07:43,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 45 [2018-10-03 09:07:43,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-03 09:07:43,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-03 09:07:43,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-03 09:07:43,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2018-10-03 09:07:43,440 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 104 [2018-10-03 09:07:43,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:43,440 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2018-10-03 09:07:43,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-03 09:07:43,440 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2018-10-03 09:07:43,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-03 09:07:43,441 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:43,441 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:43,441 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:43,441 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:43,442 INFO L82 PathProgramCache]: Analyzing trace with hash 940956960, now seen corresponding path program 44 times [2018-10-03 09:07:43,442 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:43,442 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:43,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:43,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:43,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:45,157 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:45,157 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 [2018-10-03 09:07:45,166 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:07:45,246 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:07:45,246 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:45,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:45,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:45,454 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:45,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-03 09:07:45,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-03 09:07:45,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-03 09:07:45,455 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:45,455 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand 48 states. [2018-10-03 09:07:45,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:45,664 INFO L93 Difference]: Finished difference Result 123 states and 127 transitions. [2018-10-03 09:07:45,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-03 09:07:45,664 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 106 [2018-10-03 09:07:45,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:45,665 INFO L225 Difference]: With dead ends: 123 [2018-10-03 09:07:45,665 INFO L226 Difference]: Without dead ends: 109 [2018-10-03 09:07:45,666 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime 46 [2018-10-03 09:07:45,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-03 09:07:45,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-03 09:07:45,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-03 09:07:45,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2018-10-03 09:07:45,671 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 106 [2018-10-03 09:07:45,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:45,672 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2018-10-03 09:07:45,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-03 09:07:45,672 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2018-10-03 09:07:45,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-03 09:07:45,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:45,673 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:45,673 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:45,673 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:45,673 INFO L82 PathProgramCache]: Analyzing trace with hash -371626724, now seen corresponding path program 45 times [2018-10-03 09:07:45,673 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:45,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:45,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:45,674 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:45,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:46,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2180 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:46,476 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:46,476 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:46,484 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:07:46,599 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2018-10-03 09:07:46,600 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:46,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:46,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2180 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:46,817 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:46,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-03 09:07:46,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-03 09:07:46,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-03 09:07:46,818 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:46,818 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand 49 states. [2018-10-03 09:07:46,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:46,900 INFO L93 Difference]: Finished difference Result 125 states and 129 transitions. [2018-10-03 09:07:46,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-03 09:07:46,900 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 108 [2018-10-03 09:07:46,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:46,901 INFO L225 Difference]: With dead ends: 125 [2018-10-03 09:07:46,901 INFO L226 Difference]: Without dead ends: 111 [2018-10-03 09:07:46,902 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 47 [2018-10-03 09:07:46,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-03 09:07:46,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-03 09:07:46,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-03 09:07:46,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2018-10-03 09:07:46,906 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 108 [2018-10-03 09:07:46,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:46,906 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2018-10-03 09:07:46,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-03 09:07:46,906 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2018-10-03 09:07:46,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-03 09:07:46,907 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:46,907 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:46,907 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:46,907 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:46,907 INFO L82 PathProgramCache]: Analyzing trace with hash 955837976, now seen corresponding path program 46 times [2018-10-03 09:07:46,907 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:46,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:46,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:46,908 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:46,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:47,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2274 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:47,941 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:47,941 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:47,949 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:07:48,033 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:07:48,034 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:48,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2274 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:48,239 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:48,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-03 09:07:48,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-03 09:07:48,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-03 09:07:48,240 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:48,240 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand 50 states. [2018-10-03 09:07:48,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:48,365 INFO L93 Difference]: Finished difference Result 127 states and 131 transitions. [2018-10-03 09:07:48,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-03 09:07:48,365 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 110 [2018-10-03 09:07:48,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:48,366 INFO L225 Difference]: With dead ends: 127 [2018-10-03 09:07:48,366 INFO L226 Difference]: Without dead ends: 113 [2018-10-03 09:07:48,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 48 [2018-10-03 09:07:48,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-03 09:07:48,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-03 09:07:48,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-03 09:07:48,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2018-10-03 09:07:48,371 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 110 [2018-10-03 09:07:48,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:48,371 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2018-10-03 09:07:48,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-03 09:07:48,371 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2018-10-03 09:07:48,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-03 09:07:48,372 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:48,372 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:48,372 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:48,372 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:48,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1044127764, now seen corresponding path program 47 times [2018-10-03 09:07:48,373 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:48,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:48,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:48,373 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:48,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:49,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:49,350 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:49,351 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 [2018-10-03 09:07:49,358 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:07:49,517 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-03 09:07:49,518 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:49,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:49,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:49,837 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:49,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-03 09:07:49,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-03 09:07:49,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-03 09:07:49,838 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:49,838 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 51 states. [2018-10-03 09:07:49,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:49,936 INFO L93 Difference]: Finished difference Result 129 states and 133 transitions. [2018-10-03 09:07:49,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-03 09:07:49,938 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 112 [2018-10-03 09:07:49,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:49,939 INFO L225 Difference]: With dead ends: 129 [2018-10-03 09:07:49,939 INFO L226 Difference]: Without dead ends: 115 [2018-10-03 09:07:49,939 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 49 [2018-10-03 09:07:49,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-03 09:07:49,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-03 09:07:49,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-03 09:07:49,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2018-10-03 09:07:49,944 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 112 [2018-10-03 09:07:49,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:49,945 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2018-10-03 09:07:49,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-03 09:07:49,945 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2018-10-03 09:07:49,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-03 09:07:49,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:49,946 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:49,946 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:49,946 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:49,946 INFO L82 PathProgramCache]: Analyzing trace with hash -8731888, now seen corresponding path program 48 times [2018-10-03 09:07:49,946 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:49,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:49,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:49,947 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:49,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:50,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:50,729 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:50,729 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:50,736 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:07:50,856 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 50 check-sat command(s) [2018-10-03 09:07:50,857 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:50,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:51,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:51,063 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:51,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-03 09:07:51,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-03 09:07:51,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-03 09:07:51,064 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:51,064 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand 52 states. [2018-10-03 09:07:51,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:51,211 INFO L93 Difference]: Finished difference Result 131 states and 135 transitions. [2018-10-03 09:07:51,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-03 09:07:51,211 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 114 [2018-10-03 09:07:51,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:51,212 INFO L225 Difference]: With dead ends: 131 [2018-10-03 09:07:51,212 INFO L226 Difference]: Without dead ends: 117 [2018-10-03 09:07:51,212 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 50 [2018-10-03 09:07:51,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-03 09:07:51,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-03 09:07:51,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-03 09:07:51,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2018-10-03 09:07:51,218 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 114 [2018-10-03 09:07:51,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:51,218 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2018-10-03 09:07:51,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-03 09:07:51,218 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2018-10-03 09:07:51,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-03 09:07:51,219 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:51,219 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:51,219 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:51,219 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:51,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1805424396, now seen corresponding path program 49 times [2018-10-03 09:07:51,220 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:51,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:51,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:51,220 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:51,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:52,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2568 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:52,643 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:52,643 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:52,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:52,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:53,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2568 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:53,380 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:53,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-03 09:07:53,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-03 09:07:53,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-03 09:07:53,381 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:53,381 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand 53 states. [2018-10-03 09:07:53,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:53,546 INFO L93 Difference]: Finished difference Result 133 states and 137 transitions. [2018-10-03 09:07:53,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-03 09:07:53,546 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 116 [2018-10-03 09:07:53,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:53,547 INFO L225 Difference]: With dead ends: 133 [2018-10-03 09:07:53,547 INFO L226 Difference]: Without dead ends: 119 [2018-10-03 09:07:53,547 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.1s impTime 51 [2018-10-03 09:07:53,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-03 09:07:53,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-03 09:07:53,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-03 09:07:53,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2018-10-03 09:07:53,553 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 116 [2018-10-03 09:07:53,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:53,553 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2018-10-03 09:07:53,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-03 09:07:53,553 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2018-10-03 09:07:53,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-03 09:07:53,554 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:53,554 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:53,554 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:53,554 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:53,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1452891144, now seen corresponding path program 50 times [2018-10-03 09:07:53,555 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:53,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:53,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:53,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:53,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:54,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:54,678 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:54,678 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 [2018-10-03 09:07:54,686 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:07:54,765 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:07:54,765 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:54,768 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:55,964 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:55,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-03 09:07:55,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-03 09:07:55,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-03 09:07:55,966 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:55,966 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 54 states. [2018-10-03 09:07:56,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:56,357 INFO L93 Difference]: Finished difference Result 135 states and 139 transitions. [2018-10-03 09:07:56,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-03 09:07:56,358 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 118 [2018-10-03 09:07:56,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:56,359 INFO L225 Difference]: With dead ends: 135 [2018-10-03 09:07:56,360 INFO L226 Difference]: Without dead ends: 121 [2018-10-03 09:07:56,360 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 0.9s impTime 52 [2018-10-03 09:07:56,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-03 09:07:56,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-03 09:07:56,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-03 09:07:56,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2018-10-03 09:07:56,365 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 118 [2018-10-03 09:07:56,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:56,366 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2018-10-03 09:07:56,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-03 09:07:56,366 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2018-10-03 09:07:56,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-03 09:07:56,366 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:56,367 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:56,367 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:56,367 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:56,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1970852356, now seen corresponding path program 51 times [2018-10-03 09:07:56,367 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:56,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:56,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:56,368 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:56,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:57,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2774 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:57,194 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:57,195 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:57,204 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:07:57,343 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2018-10-03 09:07:57,343 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:57,346 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:57,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2774 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:57,689 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:57,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-03 09:07:57,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-03 09:07:57,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-03 09:07:57,690 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:57,690 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand 55 states. [2018-10-03 09:07:57,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:57,873 INFO L93 Difference]: Finished difference Result 137 states and 141 transitions. [2018-10-03 09:07:57,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-03 09:07:57,873 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 120 [2018-10-03 09:07:57,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:57,874 INFO L225 Difference]: With dead ends: 137 [2018-10-03 09:07:57,874 INFO L226 Difference]: Without dead ends: 123 [2018-10-03 09:07:57,874 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime 53 [2018-10-03 09:07:57,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-03 09:07:57,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-03 09:07:57,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-03 09:07:57,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2018-10-03 09:07:57,880 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 120 [2018-10-03 09:07:57,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:57,880 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2018-10-03 09:07:57,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-03 09:07:57,880 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2018-10-03 09:07:57,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-03 09:07:57,881 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:57,881 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:57,881 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:57,882 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:57,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1515370752, now seen corresponding path program 52 times [2018-10-03 09:07:57,882 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:57,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:57,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:57,883 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:57,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:58,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2880 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:58,851 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:58,851 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:07:58,859 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:07:58,935 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:07:58,935 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:58,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:59,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2880 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:07:59,225 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:59,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-03 09:07:59,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-03 09:07:59,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-03 09:07:59,227 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:59,227 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand 56 states. [2018-10-03 09:07:59,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:59,404 INFO L93 Difference]: Finished difference Result 139 states and 143 transitions. [2018-10-03 09:07:59,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-03 09:07:59,405 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 122 [2018-10-03 09:07:59,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:59,405 INFO L225 Difference]: With dead ends: 139 [2018-10-03 09:07:59,405 INFO L226 Difference]: Without dead ends: 125 [2018-10-03 09:07:59,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 54 [2018-10-03 09:07:59,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-10-03 09:07:59,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-10-03 09:07:59,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-03 09:07:59,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2018-10-03 09:07:59,410 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 122 [2018-10-03 09:07:59,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:59,410 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2018-10-03 09:07:59,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-03 09:07:59,410 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2018-10-03 09:07:59,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-03 09:07:59,411 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:59,411 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:07:59,411 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:59,411 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:59,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1884213500, now seen corresponding path program 53 times [2018-10-03 09:07:59,411 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:59,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:59,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:59,412 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:59,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:00,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2988 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:00,995 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:00,995 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 [2018-10-03 09:08:01,011 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:08:01,200 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-03 09:08:01,201 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:01,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:01,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2988 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:01,424 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:01,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-03 09:08:01,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-03 09:08:01,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-03 09:08:01,425 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:01,426 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 57 states. [2018-10-03 09:08:01,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:01,581 INFO L93 Difference]: Finished difference Result 141 states and 145 transitions. [2018-10-03 09:08:01,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-03 09:08:01,582 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 124 [2018-10-03 09:08:01,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:01,583 INFO L225 Difference]: With dead ends: 141 [2018-10-03 09:08:01,583 INFO L226 Difference]: Without dead ends: 127 [2018-10-03 09:08:01,583 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.3s impTime 55 [2018-10-03 09:08:01,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-03 09:08:01,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-03 09:08:01,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-03 09:08:01,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 129 transitions. [2018-10-03 09:08:01,588 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 129 transitions. Word has length 124 [2018-10-03 09:08:01,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:01,588 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 129 transitions. [2018-10-03 09:08:01,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-03 09:08:01,588 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 129 transitions. [2018-10-03 09:08:01,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-03 09:08:01,588 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:01,588 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:01,589 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:01,589 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:01,589 INFO L82 PathProgramCache]: Analyzing trace with hash -140191240, now seen corresponding path program 54 times [2018-10-03 09:08:01,589 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:01,589 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:01,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:01,590 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:01,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:02,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3098 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:02,987 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:02,987 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 [2018-10-03 09:08:02,995 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:08:03,132 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 56 check-sat command(s) [2018-10-03 09:08:03,132 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:03,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3098 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:03,349 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:03,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-03 09:08:03,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-03 09:08:03,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-03 09:08:03,350 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:03,350 INFO L87 Difference]: Start difference. First operand 127 states and 129 transitions. Second operand 58 states. [2018-10-03 09:08:03,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:03,522 INFO L93 Difference]: Finished difference Result 143 states and 147 transitions. [2018-10-03 09:08:03,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-03 09:08:03,522 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 126 [2018-10-03 09:08:03,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:03,523 INFO L225 Difference]: With dead ends: 143 [2018-10-03 09:08:03,523 INFO L226 Difference]: Without dead ends: 129 [2018-10-03 09:08:03,523 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 56 [2018-10-03 09:08:03,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-03 09:08:03,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-10-03 09:08:03,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-03 09:08:03,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 131 transitions. [2018-10-03 09:08:03,547 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 131 transitions. Word has length 126 [2018-10-03 09:08:03,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:03,547 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 131 transitions. [2018-10-03 09:08:03,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-03 09:08:03,547 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 131 transitions. [2018-10-03 09:08:03,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-03 09:08:03,548 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:03,548 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:03,548 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:03,548 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:03,549 INFO L82 PathProgramCache]: Analyzing trace with hash 27038708, now seen corresponding path program 55 times [2018-10-03 09:08:03,549 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:03,549 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:03,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:03,549 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:03,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:05,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3210 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:05,180 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:05,180 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:05,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:05,277 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:05,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3210 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:05,507 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:05,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-03 09:08:05,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-03 09:08:05,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-03 09:08:05,508 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:05,508 INFO L87 Difference]: Start difference. First operand 129 states and 131 transitions. Second operand 59 states. [2018-10-03 09:08:05,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:05,664 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2018-10-03 09:08:05,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-03 09:08:05,665 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 128 [2018-10-03 09:08:05,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:05,665 INFO L225 Difference]: With dead ends: 145 [2018-10-03 09:08:05,665 INFO L226 Difference]: Without dead ends: 131 [2018-10-03 09:08:05,666 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.4s impTime 57 [2018-10-03 09:08:05,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-03 09:08:05,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-03 09:08:05,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-03 09:08:05,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2018-10-03 09:08:05,670 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 128 [2018-10-03 09:08:05,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:05,670 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2018-10-03 09:08:05,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-03 09:08:05,670 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2018-10-03 09:08:05,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-03 09:08:05,671 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:05,671 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:05,671 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:05,671 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:05,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1821228784, now seen corresponding path program 56 times [2018-10-03 09:08:05,671 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:05,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:05,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:05,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:05,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3324 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:07,327 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:07,327 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:07,334 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:08:07,415 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:08:07,416 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:07,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:07,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3324 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:07,630 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:07,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-03 09:08:07,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-03 09:08:07,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-03 09:08:07,631 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:07,631 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand 60 states. [2018-10-03 09:08:07,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:07,802 INFO L93 Difference]: Finished difference Result 147 states and 151 transitions. [2018-10-03 09:08:07,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-03 09:08:07,803 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 130 [2018-10-03 09:08:07,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:07,804 INFO L225 Difference]: With dead ends: 147 [2018-10-03 09:08:07,804 INFO L226 Difference]: Without dead ends: 133 [2018-10-03 09:08:07,804 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.4s impTime 58 [2018-10-03 09:08:07,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-03 09:08:07,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-03 09:08:07,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-03 09:08:07,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 135 transitions. [2018-10-03 09:08:07,810 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 135 transitions. Word has length 130 [2018-10-03 09:08:07,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:07,810 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 135 transitions. [2018-10-03 09:08:07,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-03 09:08:07,811 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 135 transitions. [2018-10-03 09:08:07,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-03 09:08:07,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:07,811 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:07,812 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:07,812 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:07,812 INFO L82 PathProgramCache]: Analyzing trace with hash -538961172, now seen corresponding path program 57 times [2018-10-03 09:08:07,812 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:07,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:07,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:07,813 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:07,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:07,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3440 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:09,152 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:09,152 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 [2018-10-03 09:08:09,161 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:08:09,315 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2018-10-03 09:08:09,315 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:09,318 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3440 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:09,538 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:09,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-03 09:08:09,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-03 09:08:09,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-03 09:08:09,539 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:09,539 INFO L87 Difference]: Start difference. First operand 133 states and 135 transitions. Second operand 61 states. [2018-10-03 09:08:09,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:09,772 INFO L93 Difference]: Finished difference Result 149 states and 153 transitions. [2018-10-03 09:08:09,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-03 09:08:09,773 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 132 [2018-10-03 09:08:09,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:09,774 INFO L225 Difference]: With dead ends: 149 [2018-10-03 09:08:09,774 INFO L226 Difference]: Without dead ends: 135 [2018-10-03 09:08:09,774 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime 59 [2018-10-03 09:08:09,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-03 09:08:09,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-03 09:08:09,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-03 09:08:09,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2018-10-03 09:08:09,780 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 132 [2018-10-03 09:08:09,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:09,780 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2018-10-03 09:08:09,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-03 09:08:09,780 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2018-10-03 09:08:09,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-03 09:08:09,781 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:09,781 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:09,781 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:09,781 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:09,781 INFO L82 PathProgramCache]: Analyzing trace with hash -938776600, now seen corresponding path program 58 times [2018-10-03 09:08:09,781 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:09,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:09,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:09,782 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:09,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3558 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:10,862 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:10,862 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:10,869 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:08:10,958 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:08:10,958 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:10,961 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3558 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:11,231 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:11,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-03 09:08:11,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-03 09:08:11,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-03 09:08:11,232 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:11,232 INFO L87 Difference]: Start difference. First operand 135 states and 137 transitions. Second operand 62 states. [2018-10-03 09:08:11,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:11,379 INFO L93 Difference]: Finished difference Result 151 states and 155 transitions. [2018-10-03 09:08:11,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-03 09:08:11,379 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 134 [2018-10-03 09:08:11,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:11,380 INFO L225 Difference]: With dead ends: 151 [2018-10-03 09:08:11,380 INFO L226 Difference]: Without dead ends: 137 [2018-10-03 09:08:11,380 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 60 [2018-10-03 09:08:11,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-03 09:08:11,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-10-03 09:08:11,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-03 09:08:11,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2018-10-03 09:08:11,385 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 134 [2018-10-03 09:08:11,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:11,385 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2018-10-03 09:08:11,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-03 09:08:11,385 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2018-10-03 09:08:11,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-03 09:08:11,386 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:11,386 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:11,386 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:11,386 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:11,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1385653732, now seen corresponding path program 59 times [2018-10-03 09:08:11,386 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:11,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:11,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:11,387 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:11,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:12,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3678 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:12,765 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:12,765 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 [2018-10-03 09:08:12,773 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:08:12,919 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2018-10-03 09:08:12,919 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:12,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:13,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3678 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:13,238 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:13,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-03 09:08:13,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-03 09:08:13,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-03 09:08:13,240 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:13,240 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand 63 states. [2018-10-03 09:08:13,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:13,430 INFO L93 Difference]: Finished difference Result 153 states and 157 transitions. [2018-10-03 09:08:13,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-03 09:08:13,430 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 136 [2018-10-03 09:08:13,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:13,431 INFO L225 Difference]: With dead ends: 153 [2018-10-03 09:08:13,431 INFO L226 Difference]: Without dead ends: 139 [2018-10-03 09:08:13,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.2s impTime 61 [2018-10-03 09:08:13,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-03 09:08:13,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-03 09:08:13,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-03 09:08:13,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 141 transitions. [2018-10-03 09:08:13,435 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 141 transitions. Word has length 136 [2018-10-03 09:08:13,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:13,435 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 141 transitions. [2018-10-03 09:08:13,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-03 09:08:13,436 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 141 transitions. [2018-10-03 09:08:13,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-03 09:08:13,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:13,436 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:13,436 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:13,437 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:13,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1780208864, now seen corresponding path program 60 times [2018-10-03 09:08:13,437 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:13,437 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:13,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:13,438 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:13,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:15,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3800 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:15,452 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:15,452 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:15,460 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:08:15,615 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2018-10-03 09:08:15,616 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:15,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3800 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:15,844 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:15,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-03 09:08:15,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-03 09:08:15,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-03 09:08:15,845 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:15,845 INFO L87 Difference]: Start difference. First operand 139 states and 141 transitions. Second operand 64 states. [2018-10-03 09:08:16,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:16,032 INFO L93 Difference]: Finished difference Result 155 states and 159 transitions. [2018-10-03 09:08:16,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-03 09:08:16,032 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 138 [2018-10-03 09:08:16,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:16,033 INFO L225 Difference]: With dead ends: 155 [2018-10-03 09:08:16,033 INFO L226 Difference]: Without dead ends: 141 [2018-10-03 09:08:16,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime 62 [2018-10-03 09:08:16,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-03 09:08:16,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-03 09:08:16,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-03 09:08:16,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2018-10-03 09:08:16,038 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 138 [2018-10-03 09:08:16,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:16,039 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 143 transitions. [2018-10-03 09:08:16,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-03 09:08:16,039 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 143 transitions. [2018-10-03 09:08:16,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-03 09:08:16,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:16,040 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:16,040 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:16,040 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:16,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1304398628, now seen corresponding path program 61 times [2018-10-03 09:08:16,041 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:16,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:16,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:16,041 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:16,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:17,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3924 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:17,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:17,651 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 [2018-10-03 09:08:17,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:17,756 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:18,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3924 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:18,029 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:18,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-03 09:08:18,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-03 09:08:18,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-03 09:08:18,030 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:18,030 INFO L87 Difference]: Start difference. First operand 141 states and 143 transitions. Second operand 65 states. [2018-10-03 09:08:18,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:18,208 INFO L93 Difference]: Finished difference Result 157 states and 161 transitions. [2018-10-03 09:08:18,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-03 09:08:18,209 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 140 [2018-10-03 09:08:18,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:18,209 INFO L225 Difference]: With dead ends: 157 [2018-10-03 09:08:18,209 INFO L226 Difference]: Without dead ends: 143 [2018-10-03 09:08:18,210 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.4s impTime 63 [2018-10-03 09:08:18,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-03 09:08:18,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-03 09:08:18,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-03 09:08:18,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2018-10-03 09:08:18,215 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 140 [2018-10-03 09:08:18,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:18,215 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2018-10-03 09:08:18,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-03 09:08:18,215 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2018-10-03 09:08:18,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-03 09:08:18,216 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:18,216 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:18,216 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:18,216 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:18,216 INFO L82 PathProgramCache]: Analyzing trace with hash -2084764200, now seen corresponding path program 62 times [2018-10-03 09:08:18,216 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:18,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:18,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:18,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:18,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:20,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:20,076 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:20,076 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:20,083 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:08:20,178 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:08:20,178 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:20,181 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:20,466 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:20,466 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-03 09:08:20,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-03 09:08:20,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-03 09:08:20,467 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:20,467 INFO L87 Difference]: Start difference. First operand 143 states and 145 transitions. Second operand 66 states. [2018-10-03 09:08:20,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:20,995 INFO L93 Difference]: Finished difference Result 159 states and 163 transitions. [2018-10-03 09:08:20,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-03 09:08:20,996 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 142 [2018-10-03 09:08:20,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:20,997 INFO L225 Difference]: With dead ends: 159 [2018-10-03 09:08:20,997 INFO L226 Difference]: Without dead ends: 145 [2018-10-03 09:08:20,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.6s impTime 64 [2018-10-03 09:08:20,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-03 09:08:21,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-10-03 09:08:21,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-03 09:08:21,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 147 transitions. [2018-10-03 09:08:21,004 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 147 transitions. Word has length 142 [2018-10-03 09:08:21,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:21,004 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 147 transitions. [2018-10-03 09:08:21,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-03 09:08:21,004 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 147 transitions. [2018-10-03 09:08:21,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-03 09:08:21,005 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:21,005 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:21,006 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:21,006 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:21,006 INFO L82 PathProgramCache]: Analyzing trace with hash -396802092, now seen corresponding path program 63 times [2018-10-03 09:08:21,006 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:21,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:21,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:21,007 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:21,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:23,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4178 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:23,080 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:23,080 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:08:23,087 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:08:23,259 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 65 check-sat command(s) [2018-10-03 09:08:23,259 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:23,263 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:23,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4178 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:23,507 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:23,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-03 09:08:23,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-03 09:08:23,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-03 09:08:23,508 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:23,508 INFO L87 Difference]: Start difference. First operand 145 states and 147 transitions. Second operand 67 states. [2018-10-03 09:08:23,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:23,723 INFO L93 Difference]: Finished difference Result 161 states and 165 transitions. [2018-10-03 09:08:23,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-03 09:08:23,723 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 144 [2018-10-03 09:08:23,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:23,724 INFO L225 Difference]: With dead ends: 161 [2018-10-03 09:08:23,724 INFO L226 Difference]: Without dead ends: 147 [2018-10-03 09:08:23,724 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime 65 [2018-10-03 09:08:23,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-03 09:08:23,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-03 09:08:23,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-03 09:08:23,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2018-10-03 09:08:23,731 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 144 [2018-10-03 09:08:23,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:23,731 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 149 transitions. [2018-10-03 09:08:23,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-03 09:08:23,732 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 149 transitions. [2018-10-03 09:08:23,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-03 09:08:23,732 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:23,733 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:23,733 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:23,733 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:23,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1762854192, now seen corresponding path program 64 times [2018-10-03 09:08:23,733 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:23,733 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:23,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:23,734 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:23,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:25,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4308 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:25,677 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:25,677 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:25,684 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:08:25,790 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:08:25,790 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:25,814 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:26,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4308 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:26,191 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:26,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-03 09:08:26,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-03 09:08:26,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-03 09:08:26,192 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:26,192 INFO L87 Difference]: Start difference. First operand 147 states and 149 transitions. Second operand 68 states. [2018-10-03 09:08:26,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:26,386 INFO L93 Difference]: Finished difference Result 163 states and 167 transitions. [2018-10-03 09:08:26,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-03 09:08:26,386 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 146 [2018-10-03 09:08:26,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:26,387 INFO L225 Difference]: With dead ends: 163 [2018-10-03 09:08:26,387 INFO L226 Difference]: Without dead ends: 149 [2018-10-03 09:08:26,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.7s impTime 66 [2018-10-03 09:08:26,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-03 09:08:26,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-10-03 09:08:26,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-03 09:08:26,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2018-10-03 09:08:26,393 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 146 [2018-10-03 09:08:26,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:26,394 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2018-10-03 09:08:26,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-03 09:08:26,394 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2018-10-03 09:08:26,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-03 09:08:26,395 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:26,395 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:26,395 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:26,395 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:26,395 INFO L82 PathProgramCache]: Analyzing trace with hash -278929716, now seen corresponding path program 65 times [2018-10-03 09:08:26,395 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:26,395 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:26,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:26,396 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:26,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:27,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4440 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:27,592 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:27,592 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 [2018-10-03 09:08:27,600 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:08:27,782 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2018-10-03 09:08:27,783 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:27,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:27,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4440 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:28,020 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:28,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-03 09:08:28,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-03 09:08:28,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-03 09:08:28,021 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:28,021 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand 69 states. [2018-10-03 09:08:28,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:28,186 INFO L93 Difference]: Finished difference Result 165 states and 169 transitions. [2018-10-03 09:08:28,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-03 09:08:28,187 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 148 [2018-10-03 09:08:28,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:28,187 INFO L225 Difference]: With dead ends: 165 [2018-10-03 09:08:28,187 INFO L226 Difference]: Without dead ends: 151 [2018-10-03 09:08:28,188 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 67 [2018-10-03 09:08:28,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-03 09:08:28,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-03 09:08:28,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-03 09:08:28,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2018-10-03 09:08:28,195 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 148 [2018-10-03 09:08:28,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:28,195 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2018-10-03 09:08:28,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-03 09:08:28,196 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2018-10-03 09:08:28,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-03 09:08:28,196 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:28,197 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:28,197 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:28,197 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:28,197 INFO L82 PathProgramCache]: Analyzing trace with hash -156650552, now seen corresponding path program 66 times [2018-10-03 09:08:28,197 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:28,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:28,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:28,198 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:28,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:29,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4574 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:29,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:29,885 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:29,891 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:08:30,064 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 68 check-sat command(s) [2018-10-03 09:08:30,064 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:30,068 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:30,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4574 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:30,591 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:30,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-03 09:08:30,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-03 09:08:30,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-03 09:08:30,593 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:30,593 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand 70 states. [2018-10-03 09:08:30,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:30,802 INFO L93 Difference]: Finished difference Result 167 states and 171 transitions. [2018-10-03 09:08:30,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-03 09:08:30,803 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 150 [2018-10-03 09:08:30,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:30,804 INFO L225 Difference]: With dead ends: 167 [2018-10-03 09:08:30,804 INFO L226 Difference]: Without dead ends: 153 [2018-10-03 09:08:30,804 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.4s impTime 68 [2018-10-03 09:08:30,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-03 09:08:30,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-10-03 09:08:30,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-03 09:08:30,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 155 transitions. [2018-10-03 09:08:30,809 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 155 transitions. Word has length 150 [2018-10-03 09:08:30,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:30,809 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 155 transitions. [2018-10-03 09:08:30,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-03 09:08:30,809 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 155 transitions. [2018-10-03 09:08:30,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-03 09:08:30,810 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:30,810 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:30,810 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:30,810 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:30,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1389509060, now seen corresponding path program 67 times [2018-10-03 09:08:30,811 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:30,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:30,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:30,811 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:30,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:33,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4710 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:33,007 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:33,007 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 [2018-10-03 09:08:33,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:33,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:33,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4710 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:33,378 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:33,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-03 09:08:33,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-03 09:08:33,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-03 09:08:33,380 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:33,380 INFO L87 Difference]: Start difference. First operand 153 states and 155 transitions. Second operand 71 states. [2018-10-03 09:08:33,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:33,621 INFO L93 Difference]: Finished difference Result 169 states and 173 transitions. [2018-10-03 09:08:33,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-03 09:08:33,621 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 152 [2018-10-03 09:08:33,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:33,622 INFO L225 Difference]: With dead ends: 169 [2018-10-03 09:08:33,622 INFO L226 Difference]: Without dead ends: 155 [2018-10-03 09:08:33,622 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.0s impTime 69 [2018-10-03 09:08:33,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-03 09:08:33,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-03 09:08:33,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-03 09:08:33,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2018-10-03 09:08:33,627 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 152 [2018-10-03 09:08:33,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:33,627 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2018-10-03 09:08:33,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-03 09:08:33,627 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2018-10-03 09:08:33,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-03 09:08:33,628 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:33,628 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:33,628 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:33,628 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:33,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1190211776, now seen corresponding path program 68 times [2018-10-03 09:08:33,629 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:33,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:33,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:33,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:33,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4848 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:35,097 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:35,098 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:35,105 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:08:35,211 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:08:35,211 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:35,215 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:35,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4848 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:35,822 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:35,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-03 09:08:35,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-03 09:08:35,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-03 09:08:35,823 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:35,823 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand 72 states. [2018-10-03 09:08:36,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:36,195 INFO L93 Difference]: Finished difference Result 171 states and 175 transitions. [2018-10-03 09:08:36,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-03 09:08:36,196 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 154 [2018-10-03 09:08:36,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:36,196 INFO L225 Difference]: With dead ends: 171 [2018-10-03 09:08:36,196 INFO L226 Difference]: Without dead ends: 157 [2018-10-03 09:08:36,197 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.2s impTime 70 [2018-10-03 09:08:36,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-03 09:08:36,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-10-03 09:08:36,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-03 09:08:36,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 159 transitions. [2018-10-03 09:08:36,202 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 159 transitions. Word has length 154 [2018-10-03 09:08:36,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:36,202 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 159 transitions. [2018-10-03 09:08:36,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-03 09:08:36,202 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 159 transitions. [2018-10-03 09:08:36,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-03 09:08:36,203 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:36,203 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:36,203 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:36,203 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:36,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1355917124, now seen corresponding path program 69 times [2018-10-03 09:08:36,204 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:36,204 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:36,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:36,204 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:36,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:37,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4988 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:37,672 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:37,672 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 [2018-10-03 09:08:37,680 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:08:37,875 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 71 check-sat command(s) [2018-10-03 09:08:37,875 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:37,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:38,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4988 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:38,148 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:38,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-03 09:08:38,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-03 09:08:38,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-03 09:08:38,150 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:38,150 INFO L87 Difference]: Start difference. First operand 157 states and 159 transitions. Second operand 73 states. [2018-10-03 09:08:38,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:38,343 INFO L93 Difference]: Finished difference Result 173 states and 177 transitions. [2018-10-03 09:08:38,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-03 09:08:38,343 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 156 [2018-10-03 09:08:38,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:38,344 INFO L225 Difference]: With dead ends: 173 [2018-10-03 09:08:38,344 INFO L226 Difference]: Without dead ends: 159 [2018-10-03 09:08:38,344 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.2s impTime 71 [2018-10-03 09:08:38,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-03 09:08:38,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-03 09:08:38,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-03 09:08:38,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 161 transitions. [2018-10-03 09:08:38,350 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 161 transitions. Word has length 156 [2018-10-03 09:08:38,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:38,350 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 161 transitions. [2018-10-03 09:08:38,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-03 09:08:38,350 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 161 transitions. [2018-10-03 09:08:38,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-03 09:08:38,351 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:38,351 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:38,351 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:38,351 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:38,351 INFO L82 PathProgramCache]: Analyzing trace with hash -54431304, now seen corresponding path program 70 times [2018-10-03 09:08:38,351 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:38,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:38,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:38,352 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:38,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:40,535 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:40,535 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:40,535 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:40,543 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:08:40,646 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:08:40,646 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:40,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:40,959 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:40,979 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:40,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-03 09:08:40,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-03 09:08:40,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-03 09:08:40,980 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:40,981 INFO L87 Difference]: Start difference. First operand 159 states and 161 transitions. Second operand 74 states. [2018-10-03 09:08:41,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:41,228 INFO L93 Difference]: Finished difference Result 175 states and 179 transitions. [2018-10-03 09:08:41,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-03 09:08:41,228 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 158 [2018-10-03 09:08:41,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:41,229 INFO L225 Difference]: With dead ends: 175 [2018-10-03 09:08:41,229 INFO L226 Difference]: Without dead ends: 161 [2018-10-03 09:08:41,230 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime 72 [2018-10-03 09:08:41,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-03 09:08:41,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-10-03 09:08:41,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-03 09:08:41,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 163 transitions. [2018-10-03 09:08:41,236 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 163 transitions. Word has length 158 [2018-10-03 09:08:41,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:41,236 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 163 transitions. [2018-10-03 09:08:41,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-03 09:08:41,237 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 163 transitions. [2018-10-03 09:08:41,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-03 09:08:41,237 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:41,238 INFO L375 BasicCegarLoop]: trace histogram [73, 72, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:41,238 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:41,238 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:41,238 INFO L82 PathProgramCache]: Analyzing trace with hash 837958580, now seen corresponding path program 71 times [2018-10-03 09:08:41,238 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:41,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:41,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:41,239 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:41,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:43,335 INFO L134 CoverageAnalysis]: Checked inductivity of 5274 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:43,335 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:43,335 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:43,342 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:08:43,533 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2018-10-03 09:08:43,533 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:43,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:43,832 INFO L134 CoverageAnalysis]: Checked inductivity of 5274 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:43,853 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:43,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-03 09:08:43,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-03 09:08:43,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-03 09:08:43,854 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:43,854 INFO L87 Difference]: Start difference. First operand 161 states and 163 transitions. Second operand 75 states. [2018-10-03 09:08:44,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:44,101 INFO L93 Difference]: Finished difference Result 177 states and 181 transitions. [2018-10-03 09:08:44,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-03 09:08:44,101 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 160 [2018-10-03 09:08:44,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:44,102 INFO L225 Difference]: With dead ends: 177 [2018-10-03 09:08:44,102 INFO L226 Difference]: Without dead ends: 163 [2018-10-03 09:08:44,103 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.8s impTime 73 [2018-10-03 09:08:44,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-03 09:08:44,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-03 09:08:44,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-03 09:08:44,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 165 transitions. [2018-10-03 09:08:44,110 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 165 transitions. Word has length 160 [2018-10-03 09:08:44,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:44,110 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 165 transitions. [2018-10-03 09:08:44,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-03 09:08:44,110 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 165 transitions. [2018-10-03 09:08:44,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-03 09:08:44,111 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:44,111 INFO L375 BasicCegarLoop]: trace histogram [74, 73, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:44,112 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:44,112 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:44,112 INFO L82 PathProgramCache]: Analyzing trace with hash -568822096, now seen corresponding path program 72 times [2018-10-03 09:08:44,112 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:44,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:44,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:44,113 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:44,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:45,719 INFO L134 CoverageAnalysis]: Checked inductivity of 5420 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:45,720 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:45,720 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 [2018-10-03 09:08:45,727 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:08:45,983 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 74 check-sat command(s) [2018-10-03 09:08:45,984 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:45,987 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:46,254 INFO L134 CoverageAnalysis]: Checked inductivity of 5420 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:46,275 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:46,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-03 09:08:46,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-03 09:08:46,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-03 09:08:46,277 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:46,277 INFO L87 Difference]: Start difference. First operand 163 states and 165 transitions. Second operand 76 states. [2018-10-03 09:08:46,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:46,474 INFO L93 Difference]: Finished difference Result 179 states and 183 transitions. [2018-10-03 09:08:46,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-03 09:08:46,475 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 162 [2018-10-03 09:08:46,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:46,476 INFO L225 Difference]: With dead ends: 179 [2018-10-03 09:08:46,476 INFO L226 Difference]: Without dead ends: 165 [2018-10-03 09:08:46,476 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime 74 [2018-10-03 09:08:46,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-03 09:08:46,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-10-03 09:08:46,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-03 09:08:46,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 167 transitions. [2018-10-03 09:08:46,482 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 167 transitions. Word has length 162 [2018-10-03 09:08:46,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:46,483 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 167 transitions. [2018-10-03 09:08:46,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-03 09:08:46,483 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 167 transitions. [2018-10-03 09:08:46,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-03 09:08:46,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:46,484 INFO L375 BasicCegarLoop]: trace histogram [75, 74, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:46,484 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:46,484 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:46,484 INFO L82 PathProgramCache]: Analyzing trace with hash 429646508, now seen corresponding path program 73 times [2018-10-03 09:08:46,485 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:46,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:46,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:46,485 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:46,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:48,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5568 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:48,862 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:48,862 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:48,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:48,974 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:49,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5568 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:49,298 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:49,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-03 09:08:49,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-03 09:08:49,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-03 09:08:49,299 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:49,299 INFO L87 Difference]: Start difference. First operand 165 states and 167 transitions. Second operand 77 states. [2018-10-03 09:08:49,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:49,571 INFO L93 Difference]: Finished difference Result 181 states and 185 transitions. [2018-10-03 09:08:49,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-03 09:08:49,571 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 164 [2018-10-03 09:08:49,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:49,572 INFO L225 Difference]: With dead ends: 181 [2018-10-03 09:08:49,572 INFO L226 Difference]: Without dead ends: 167 [2018-10-03 09:08:49,572 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.1s impTime 75 [2018-10-03 09:08:49,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-03 09:08:49,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-03 09:08:49,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-03 09:08:49,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 169 transitions. [2018-10-03 09:08:49,577 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 169 transitions. Word has length 164 [2018-10-03 09:08:49,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:49,577 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 169 transitions. [2018-10-03 09:08:49,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-03 09:08:49,577 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 169 transitions. [2018-10-03 09:08:49,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-03 09:08:49,578 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:49,578 INFO L375 BasicCegarLoop]: trace histogram [76, 75, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:49,578 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:49,578 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:49,578 INFO L82 PathProgramCache]: Analyzing trace with hash -2114699352, now seen corresponding path program 74 times [2018-10-03 09:08:49,578 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:49,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:49,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:49,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:49,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:51,482 INFO L134 CoverageAnalysis]: Checked inductivity of 5718 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:51,482 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:51,482 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 [2018-10-03 09:08:51,490 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:08:51,594 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:08:51,595 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:51,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:51,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5718 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:51,877 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:51,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-03 09:08:51,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-03 09:08:51,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-03 09:08:51,878 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:51,878 INFO L87 Difference]: Start difference. First operand 167 states and 169 transitions. Second operand 78 states. [2018-10-03 09:08:52,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:52,100 INFO L93 Difference]: Finished difference Result 183 states and 187 transitions. [2018-10-03 09:08:52,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-03 09:08:52,100 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 166 [2018-10-03 09:08:52,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:52,101 INFO L225 Difference]: With dead ends: 183 [2018-10-03 09:08:52,101 INFO L226 Difference]: Without dead ends: 169 [2018-10-03 09:08:52,101 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.6s impTime 76 [2018-10-03 09:08:52,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-03 09:08:52,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-10-03 09:08:52,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-03 09:08:52,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 171 transitions. [2018-10-03 09:08:52,106 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 171 transitions. Word has length 166 [2018-10-03 09:08:52,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:52,106 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 171 transitions. [2018-10-03 09:08:52,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-03 09:08:52,106 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 171 transitions. [2018-10-03 09:08:52,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-03 09:08:52,107 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:52,107 INFO L375 BasicCegarLoop]: trace histogram [77, 76, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:52,107 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:52,107 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:52,107 INFO L82 PathProgramCache]: Analyzing trace with hash 900287908, now seen corresponding path program 75 times [2018-10-03 09:08:52,108 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:52,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:52,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:52,108 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:52,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:53,596 INFO L134 CoverageAnalysis]: Checked inductivity of 5870 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:53,597 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:53,597 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:53,604 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:08:53,826 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 77 check-sat command(s) [2018-10-03 09:08:53,826 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:53,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:54,082 INFO L134 CoverageAnalysis]: Checked inductivity of 5870 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:54,103 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:54,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-03 09:08:54,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-03 09:08:54,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-03 09:08:54,104 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:54,104 INFO L87 Difference]: Start difference. First operand 169 states and 171 transitions. Second operand 79 states. [2018-10-03 09:08:54,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:54,292 INFO L93 Difference]: Finished difference Result 185 states and 189 transitions. [2018-10-03 09:08:54,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-03 09:08:54,293 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 168 [2018-10-03 09:08:54,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:54,293 INFO L225 Difference]: With dead ends: 185 [2018-10-03 09:08:54,293 INFO L226 Difference]: Without dead ends: 171 [2018-10-03 09:08:54,294 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 77 [2018-10-03 09:08:54,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-03 09:08:54,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-03 09:08:54,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-03 09:08:54,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 173 transitions. [2018-10-03 09:08:54,300 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 173 transitions. Word has length 168 [2018-10-03 09:08:54,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:54,300 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 173 transitions. [2018-10-03 09:08:54,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-03 09:08:54,300 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 173 transitions. [2018-10-03 09:08:54,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-03 09:08:54,301 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:54,301 INFO L375 BasicCegarLoop]: trace histogram [78, 77, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:54,301 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:54,301 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:54,301 INFO L82 PathProgramCache]: Analyzing trace with hash -799880032, now seen corresponding path program 76 times [2018-10-03 09:08:54,301 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:54,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:54,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:54,302 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:54,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:56,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6024 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:56,157 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:56,157 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 [2018-10-03 09:08:56,165 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:08:56,275 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:08:56,275 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:56,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:56,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6024 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:56,558 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:56,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-03 09:08:56,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-03 09:08:56,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-03 09:08:56,559 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:56,559 INFO L87 Difference]: Start difference. First operand 171 states and 173 transitions. Second operand 80 states. [2018-10-03 09:08:56,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:56,750 INFO L93 Difference]: Finished difference Result 187 states and 191 transitions. [2018-10-03 09:08:56,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-03 09:08:56,750 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 170 [2018-10-03 09:08:56,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:56,751 INFO L225 Difference]: With dead ends: 187 [2018-10-03 09:08:56,751 INFO L226 Difference]: Without dead ends: 173 [2018-10-03 09:08:56,751 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime 78 [2018-10-03 09:08:56,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-03 09:08:56,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-10-03 09:08:56,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-03 09:08:56,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2018-10-03 09:08:56,758 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 170 [2018-10-03 09:08:56,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:56,758 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 175 transitions. [2018-10-03 09:08:56,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-03 09:08:56,758 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 175 transitions. [2018-10-03 09:08:56,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-03 09:08:56,759 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:56,759 INFO L375 BasicCegarLoop]: trace histogram [79, 78, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:56,759 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:56,759 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:56,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1721269404, now seen corresponding path program 77 times [2018-10-03 09:08:56,760 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:56,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:56,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:56,760 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:56,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:57,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6180 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:57,772 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:57,772 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 [2018-10-03 09:08:57,779 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:08:57,997 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 79 check-sat command(s) [2018-10-03 09:08:57,997 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:58,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:58,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6180 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:58,289 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:58,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-03 09:08:58,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-03 09:08:58,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-03 09:08:58,291 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:58,291 INFO L87 Difference]: Start difference. First operand 173 states and 175 transitions. Second operand 81 states. [2018-10-03 09:08:58,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:58,466 INFO L93 Difference]: Finished difference Result 189 states and 193 transitions. [2018-10-03 09:08:58,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-03 09:08:58,466 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 172 [2018-10-03 09:08:58,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:58,467 INFO L225 Difference]: With dead ends: 189 [2018-10-03 09:08:58,467 INFO L226 Difference]: Without dead ends: 175 [2018-10-03 09:08:58,467 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 79 [2018-10-03 09:08:58,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-03 09:08:58,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-03 09:08:58,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-03 09:08:58,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 177 transitions. [2018-10-03 09:08:58,475 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 177 transitions. Word has length 172 [2018-10-03 09:08:58,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:58,475 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 177 transitions. [2018-10-03 09:08:58,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-03 09:08:58,475 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 177 transitions. [2018-10-03 09:08:58,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-03 09:08:58,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:58,476 INFO L375 BasicCegarLoop]: trace histogram [80, 79, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:08:58,476 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:58,476 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:58,477 INFO L82 PathProgramCache]: Analyzing trace with hash -2110644840, now seen corresponding path program 78 times [2018-10-03 09:08:58,477 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:58,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:58,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:58,478 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:58,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 6338 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:08:59,898 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:59,898 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:59,906 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:09:00,131 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 80 check-sat command(s) [2018-10-03 09:09:00,132 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:00,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:00,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6338 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:00,420 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:00,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-03 09:09:00,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-03 09:09:00,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-03 09:09:00,421 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:00,421 INFO L87 Difference]: Start difference. First operand 175 states and 177 transitions. Second operand 82 states. [2018-10-03 09:09:00,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:00,694 INFO L93 Difference]: Finished difference Result 191 states and 195 transitions. [2018-10-03 09:09:00,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-03 09:09:00,694 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 174 [2018-10-03 09:09:00,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:00,695 INFO L225 Difference]: With dead ends: 191 [2018-10-03 09:09:00,695 INFO L226 Difference]: Without dead ends: 177 [2018-10-03 09:09:00,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 80 [2018-10-03 09:09:00,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-03 09:09:00,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-10-03 09:09:00,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-10-03 09:09:00,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 179 transitions. [2018-10-03 09:09:00,700 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 179 transitions. Word has length 174 [2018-10-03 09:09:00,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:00,700 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 179 transitions. [2018-10-03 09:09:00,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-03 09:09:00,700 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 179 transitions. [2018-10-03 09:09:00,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-03 09:09:00,701 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:00,701 INFO L375 BasicCegarLoop]: trace histogram [81, 80, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:09:00,702 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:00,702 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:00,702 INFO L82 PathProgramCache]: Analyzing trace with hash 501706644, now seen corresponding path program 79 times [2018-10-03 09:09:00,702 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:00,702 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:00,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:00,703 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:00,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:02,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:02,392 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:02,393 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:02,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:02,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:02,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:02,822 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:02,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-03 09:09:02,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-03 09:09:02,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-03 09:09:02,823 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:02,824 INFO L87 Difference]: Start difference. First operand 177 states and 179 transitions. Second operand 83 states. [2018-10-03 09:09:03,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:03,099 INFO L93 Difference]: Finished difference Result 193 states and 197 transitions. [2018-10-03 09:09:03,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-03 09:09:03,100 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 176 [2018-10-03 09:09:03,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:03,100 INFO L225 Difference]: With dead ends: 193 [2018-10-03 09:09:03,100 INFO L226 Difference]: Without dead ends: 179 [2018-10-03 09:09:03,101 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime 81 [2018-10-03 09:09:03,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-03 09:09:03,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-03 09:09:03,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-03 09:09:03,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 181 transitions. [2018-10-03 09:09:03,107 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 181 transitions. Word has length 176 [2018-10-03 09:09:03,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:03,107 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 181 transitions. [2018-10-03 09:09:03,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-03 09:09:03,107 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 181 transitions. [2018-10-03 09:09:03,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-03 09:09:03,108 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:03,108 INFO L375 BasicCegarLoop]: trace histogram [82, 81, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:09:03,108 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:03,108 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:03,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1584385392, now seen corresponding path program 80 times [2018-10-03 09:09:03,108 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:03,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:03,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:03,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:03,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6660 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:04,405 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:04,405 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 [2018-10-03 09:09:04,412 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:09:04,521 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:09:04,521 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:04,525 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:04,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6660 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:04,826 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:04,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-03 09:09:04,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-03 09:09:04,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-03 09:09:04,828 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:04,828 INFO L87 Difference]: Start difference. First operand 179 states and 181 transitions. Second operand 84 states. [2018-10-03 09:09:05,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:05,083 INFO L93 Difference]: Finished difference Result 195 states and 199 transitions. [2018-10-03 09:09:05,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-03 09:09:05,083 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 178 [2018-10-03 09:09:05,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:05,084 INFO L225 Difference]: With dead ends: 195 [2018-10-03 09:09:05,084 INFO L226 Difference]: Without dead ends: 181 [2018-10-03 09:09:05,084 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 82 [2018-10-03 09:09:05,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-03 09:09:05,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-03 09:09:05,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-03 09:09:05,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 183 transitions. [2018-10-03 09:09:05,090 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 183 transitions. Word has length 178 [2018-10-03 09:09:05,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:05,090 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 183 transitions. [2018-10-03 09:09:05,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-03 09:09:05,090 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 183 transitions. [2018-10-03 09:09:05,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-03 09:09:05,091 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:05,091 INFO L375 BasicCegarLoop]: trace histogram [83, 82, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:09:05,091 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:05,091 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:05,091 INFO L82 PathProgramCache]: Analyzing trace with hash -569104756, now seen corresponding path program 81 times [2018-10-03 09:09:05,091 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:05,091 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:05,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:05,092 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:05,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:06,576 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:06,577 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 [2018-10-03 09:09:06,600 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:09:06,850 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 83 check-sat command(s) [2018-10-03 09:09:06,851 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:06,855 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:07,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:07,242 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:07,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-03 09:09:07,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-03 09:09:07,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-03 09:09:07,243 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:07,243 INFO L87 Difference]: Start difference. First operand 181 states and 183 transitions. Second operand 85 states. [2018-10-03 09:09:07,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:07,427 INFO L93 Difference]: Finished difference Result 197 states and 201 transitions. [2018-10-03 09:09:07,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-03 09:09:07,427 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 180 [2018-10-03 09:09:07,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:07,428 INFO L225 Difference]: With dead ends: 197 [2018-10-03 09:09:07,428 INFO L226 Difference]: Without dead ends: 183 [2018-10-03 09:09:07,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime 83 [2018-10-03 09:09:07,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-03 09:09:07,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-03 09:09:07,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-03 09:09:07,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 185 transitions. [2018-10-03 09:09:07,435 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 185 transitions. Word has length 180 [2018-10-03 09:09:07,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:07,435 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 185 transitions. [2018-10-03 09:09:07,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-03 09:09:07,435 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 185 transitions. [2018-10-03 09:09:07,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-03 09:09:07,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:07,436 INFO L375 BasicCegarLoop]: trace histogram [84, 83, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:09:07,436 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:07,437 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:07,437 INFO L82 PathProgramCache]: Analyzing trace with hash 158010248, now seen corresponding path program 82 times [2018-10-03 09:09:07,437 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:07,437 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:07,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:07,438 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:07,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:08,964 INFO L134 CoverageAnalysis]: Checked inductivity of 6990 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:08,964 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:08,964 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 [2018-10-03 09:09:08,972 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:09:09,089 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:09:09,089 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:09,093 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:09,389 INFO L134 CoverageAnalysis]: Checked inductivity of 6990 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:09,410 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:09,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-03 09:09:09,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-03 09:09:09,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-03 09:09:09,411 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:09,412 INFO L87 Difference]: Start difference. First operand 183 states and 185 transitions. Second operand 86 states. [2018-10-03 09:09:09,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:09,717 INFO L93 Difference]: Finished difference Result 199 states and 203 transitions. [2018-10-03 09:09:09,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-03 09:09:09,717 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 182 [2018-10-03 09:09:09,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:09,718 INFO L225 Difference]: With dead ends: 199 [2018-10-03 09:09:09,718 INFO L226 Difference]: Without dead ends: 185 [2018-10-03 09:09:09,718 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 84 [2018-10-03 09:09:09,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-03 09:09:09,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-10-03 09:09:09,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-03 09:09:09,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 187 transitions. [2018-10-03 09:09:09,724 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 187 transitions. Word has length 182 [2018-10-03 09:09:09,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:09,724 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 187 transitions. [2018-10-03 09:09:09,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-03 09:09:09,725 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 187 transitions. [2018-10-03 09:09:09,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-03 09:09:09,725 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:09,725 INFO L375 BasicCegarLoop]: trace histogram [85, 84, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:09:09,726 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:09,726 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:09,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1164140156, now seen corresponding path program 83 times [2018-10-03 09:09:09,726 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:09,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:09,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:09,727 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:09,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:11,624 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:11,624 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:11,624 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 [2018-10-03 09:09:11,634 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:09:11,878 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 85 check-sat command(s) [2018-10-03 09:09:11,879 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:11,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:12,169 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:12,190 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:12,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-03 09:09:12,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-03 09:09:12,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-03 09:09:12,191 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:12,191 INFO L87 Difference]: Start difference. First operand 185 states and 187 transitions. Second operand 87 states. [2018-10-03 09:09:12,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:12,509 INFO L93 Difference]: Finished difference Result 201 states and 205 transitions. [2018-10-03 09:09:12,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-03 09:09:12,509 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 184 [2018-10-03 09:09:12,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:12,510 INFO L225 Difference]: With dead ends: 201 [2018-10-03 09:09:12,510 INFO L226 Difference]: Without dead ends: 187 [2018-10-03 09:09:12,510 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.5s impTime 85 [2018-10-03 09:09:12,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-03 09:09:12,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-03 09:09:12,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-03 09:09:12,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 189 transitions. [2018-10-03 09:09:12,518 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 189 transitions. Word has length 184 [2018-10-03 09:09:12,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:12,518 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 189 transitions. [2018-10-03 09:09:12,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-03 09:09:12,518 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 189 transitions. [2018-10-03 09:09:12,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-03 09:09:12,519 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:12,519 INFO L375 BasicCegarLoop]: trace histogram [86, 85, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:09:12,519 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:12,520 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:12,520 INFO L82 PathProgramCache]: Analyzing trace with hash -440358784, now seen corresponding path program 84 times [2018-10-03 09:09:12,520 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:12,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:12,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:12,521 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:12,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:14,012 INFO L134 CoverageAnalysis]: Checked inductivity of 7328 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:14,013 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:14,013 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 [2018-10-03 09:09:14,020 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:09:14,273 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 86 check-sat command(s) [2018-10-03 09:09:14,273 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:14,278 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:14,563 INFO L134 CoverageAnalysis]: Checked inductivity of 7328 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:14,583 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:14,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-03 09:09:14,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-03 09:09:14,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-03 09:09:14,585 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:14,585 INFO L87 Difference]: Start difference. First operand 187 states and 189 transitions. Second operand 88 states. [2018-10-03 09:09:14,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:14,825 INFO L93 Difference]: Finished difference Result 203 states and 207 transitions. [2018-10-03 09:09:14,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-03 09:09:14,826 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 186 [2018-10-03 09:09:14,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:14,827 INFO L225 Difference]: With dead ends: 203 [2018-10-03 09:09:14,827 INFO L226 Difference]: Without dead ends: 189 [2018-10-03 09:09:14,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.2s impTime 86 [2018-10-03 09:09:14,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-03 09:09:14,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-10-03 09:09:14,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-03 09:09:14,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 191 transitions. [2018-10-03 09:09:14,835 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 191 transitions. Word has length 186 [2018-10-03 09:09:14,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:14,835 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 191 transitions. [2018-10-03 09:09:14,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-03 09:09:14,835 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 191 transitions. [2018-10-03 09:09:14,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-03 09:09:14,836 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:14,836 INFO L375 BasicCegarLoop]: trace histogram [87, 86, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:09:14,836 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:14,836 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:14,837 INFO L82 PathProgramCache]: Analyzing trace with hash -671162244, now seen corresponding path program 85 times [2018-10-03 09:09:14,837 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:14,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:14,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:14,837 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:14,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:15,999 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:15,999 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:15,999 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:16,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:16,138 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:16,664 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:16,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-03 09:09:16,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-03 09:09:16,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-03 09:09:16,666 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:16,666 INFO L87 Difference]: Start difference. First operand 189 states and 191 transitions. Second operand 89 states. [2018-10-03 09:09:16,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:16,870 INFO L93 Difference]: Finished difference Result 205 states and 209 transitions. [2018-10-03 09:09:16,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-03 09:09:16,870 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 188 [2018-10-03 09:09:16,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:16,871 INFO L225 Difference]: With dead ends: 205 [2018-10-03 09:09:16,871 INFO L226 Difference]: Without dead ends: 191 [2018-10-03 09:09:16,871 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 0.8s impTime 87 [2018-10-03 09:09:16,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-03 09:09:16,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-03 09:09:16,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-03 09:09:16,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 193 transitions. [2018-10-03 09:09:16,878 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 193 transitions. Word has length 188 [2018-10-03 09:09:16,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:16,878 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 193 transitions. [2018-10-03 09:09:16,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-03 09:09:16,878 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 193 transitions. [2018-10-03 09:09:16,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-03 09:09:16,879 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:16,879 INFO L375 BasicCegarLoop]: trace histogram [88, 87, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:09:16,879 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:16,879 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:16,879 INFO L82 PathProgramCache]: Analyzing trace with hash 865012088, now seen corresponding path program 86 times [2018-10-03 09:09:16,879 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:16,879 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:16,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:16,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:16,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:18,597 INFO L134 CoverageAnalysis]: Checked inductivity of 7674 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:18,598 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:18,598 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:18,605 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:09:18,720 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:09:18,720 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:18,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:19,026 INFO L134 CoverageAnalysis]: Checked inductivity of 7674 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:19,046 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:19,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-03 09:09:19,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-03 09:09:19,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-03 09:09:19,048 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:19,048 INFO L87 Difference]: Start difference. First operand 191 states and 193 transitions. Second operand 90 states. [2018-10-03 09:09:19,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:19,390 INFO L93 Difference]: Finished difference Result 207 states and 211 transitions. [2018-10-03 09:09:19,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-03 09:09:19,390 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 190 [2018-10-03 09:09:19,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:19,391 INFO L225 Difference]: With dead ends: 207 [2018-10-03 09:09:19,391 INFO L226 Difference]: Without dead ends: 193 [2018-10-03 09:09:19,391 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime 88 [2018-10-03 09:09:19,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-03 09:09:19,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-10-03 09:09:19,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-03 09:09:19,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 195 transitions. [2018-10-03 09:09:19,397 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 195 transitions. Word has length 190 [2018-10-03 09:09:19,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:19,397 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 195 transitions. [2018-10-03 09:09:19,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-03 09:09:19,397 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 195 transitions. [2018-10-03 09:09:19,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-03 09:09:19,398 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:19,398 INFO L375 BasicCegarLoop]: trace histogram [89, 88, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:09:19,398 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:19,398 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:19,398 INFO L82 PathProgramCache]: Analyzing trace with hash -340204684, now seen corresponding path program 87 times [2018-10-03 09:09:19,398 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:19,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:19,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:19,399 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:19,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:20,888 INFO L134 CoverageAnalysis]: Checked inductivity of 7850 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:20,888 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:20,888 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:20,895 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:09:21,174 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 89 check-sat command(s) [2018-10-03 09:09:21,174 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:21,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:21,710 INFO L134 CoverageAnalysis]: Checked inductivity of 7850 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:21,732 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:21,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-03 09:09:21,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-03 09:09:21,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-03 09:09:21,733 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:21,733 INFO L87 Difference]: Start difference. First operand 193 states and 195 transitions. Second operand 91 states. [2018-10-03 09:09:21,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:21,964 INFO L93 Difference]: Finished difference Result 209 states and 213 transitions. [2018-10-03 09:09:21,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-03 09:09:21,964 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 192 [2018-10-03 09:09:21,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:21,965 INFO L225 Difference]: With dead ends: 209 [2018-10-03 09:09:21,965 INFO L226 Difference]: Without dead ends: 195 [2018-10-03 09:09:21,965 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.1s impTime 89 [2018-10-03 09:09:21,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-03 09:09:21,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-03 09:09:21,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-03 09:09:21,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 197 transitions. [2018-10-03 09:09:21,970 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 197 transitions. Word has length 192 [2018-10-03 09:09:21,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:21,971 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 197 transitions. [2018-10-03 09:09:21,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-03 09:09:21,971 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 197 transitions. [2018-10-03 09:09:21,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-03 09:09:21,971 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:21,971 INFO L375 BasicCegarLoop]: trace histogram [90, 89, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:09:21,972 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:21,972 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:21,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1087647344, now seen corresponding path program 88 times [2018-10-03 09:09:21,972 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:21,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:21,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:21,973 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:21,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:23,923 INFO L134 CoverageAnalysis]: Checked inductivity of 8028 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:23,923 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:23,924 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:23,930 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:09:24,058 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:09:24,058 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:24,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 8028 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:24,391 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:24,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-03 09:09:24,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-03 09:09:24,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-03 09:09:24,392 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:24,393 INFO L87 Difference]: Start difference. First operand 195 states and 197 transitions. Second operand 92 states. [2018-10-03 09:09:24,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:24,738 INFO L93 Difference]: Finished difference Result 211 states and 215 transitions. [2018-10-03 09:09:24,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-03 09:09:24,739 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 194 [2018-10-03 09:09:24,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:24,739 INFO L225 Difference]: With dead ends: 211 [2018-10-03 09:09:24,740 INFO L226 Difference]: Without dead ends: 197 [2018-10-03 09:09:24,740 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.6s impTime 90 [2018-10-03 09:09:24,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-10-03 09:09:24,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-10-03 09:09:24,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-03 09:09:24,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 199 transitions. [2018-10-03 09:09:24,746 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 199 transitions. Word has length 194 [2018-10-03 09:09:24,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:24,746 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 199 transitions. [2018-10-03 09:09:24,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-03 09:09:24,746 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 199 transitions. [2018-10-03 09:09:24,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-03 09:09:24,747 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:24,747 INFO L375 BasicCegarLoop]: trace histogram [91, 90, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:09:24,748 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:24,748 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:24,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1136088468, now seen corresponding path program 89 times [2018-10-03 09:09:24,748 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:24,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:24,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:24,749 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:24,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:26,359 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:26,360 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:26,360 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 [2018-10-03 09:09:26,369 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:09:26,653 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 91 check-sat command(s) [2018-10-03 09:09:26,653 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:26,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:27,060 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:27,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-03 09:09:27,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-03 09:09:27,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-03 09:09:27,061 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:27,061 INFO L87 Difference]: Start difference. First operand 197 states and 199 transitions. Second operand 93 states. [2018-10-03 09:09:27,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:27,393 INFO L93 Difference]: Finished difference Result 213 states and 217 transitions. [2018-10-03 09:09:27,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-03 09:09:27,393 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 196 [2018-10-03 09:09:27,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:27,394 INFO L225 Difference]: With dead ends: 213 [2018-10-03 09:09:27,394 INFO L226 Difference]: Without dead ends: 199 [2018-10-03 09:09:27,394 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime 91 [2018-10-03 09:09:27,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-03 09:09:27,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-03 09:09:27,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-03 09:09:27,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 201 transitions. [2018-10-03 09:09:27,400 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 201 transitions. Word has length 196 [2018-10-03 09:09:27,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:27,400 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 201 transitions. [2018-10-03 09:09:27,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-03 09:09:27,400 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 201 transitions. [2018-10-03 09:09:27,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-03 09:09:27,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:27,401 INFO L375 BasicCegarLoop]: trace histogram [92, 91, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:09:27,401 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:27,401 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:27,401 INFO L82 PathProgramCache]: Analyzing trace with hash 747509608, now seen corresponding path program 90 times [2018-10-03 09:09:27,401 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:27,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:27,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:27,402 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:27,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:28,860 INFO L134 CoverageAnalysis]: Checked inductivity of 8390 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:28,861 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:28,861 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 [2018-10-03 09:09:28,868 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:09:29,146 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 92 check-sat command(s) [2018-10-03 09:09:29,146 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:29,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:29,461 INFO L134 CoverageAnalysis]: Checked inductivity of 8390 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:29,483 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:29,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-03 09:09:29,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-03 09:09:29,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-03 09:09:29,484 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:29,484 INFO L87 Difference]: Start difference. First operand 199 states and 201 transitions. Second operand 94 states. [2018-10-03 09:09:29,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:29,804 INFO L93 Difference]: Finished difference Result 215 states and 219 transitions. [2018-10-03 09:09:29,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-03 09:09:29,805 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 198 [2018-10-03 09:09:29,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:29,805 INFO L225 Difference]: With dead ends: 215 [2018-10-03 09:09:29,805 INFO L226 Difference]: Without dead ends: 201 [2018-10-03 09:09:29,806 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 92 [2018-10-03 09:09:29,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-03 09:09:29,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-10-03 09:09:29,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-10-03 09:09:29,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 203 transitions. [2018-10-03 09:09:29,812 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 203 transitions. Word has length 198 [2018-10-03 09:09:29,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:29,812 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 203 transitions. [2018-10-03 09:09:29,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-03 09:09:29,813 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 203 transitions. [2018-10-03 09:09:29,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-03 09:09:29,813 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:29,813 INFO L375 BasicCegarLoop]: trace histogram [93, 92, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:09:29,813 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:29,814 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:29,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1590938268, now seen corresponding path program 91 times [2018-10-03 09:09:29,814 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:29,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:29,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:29,814 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:29,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:31,571 INFO L134 CoverageAnalysis]: Checked inductivity of 8574 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:31,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:31,571 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:31,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:31,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:32,178 INFO L134 CoverageAnalysis]: Checked inductivity of 8574 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:32,199 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:32,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-03 09:09:32,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-03 09:09:32,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-03 09:09:32,200 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:32,200 INFO L87 Difference]: Start difference. First operand 201 states and 203 transitions. Second operand 95 states. [2018-10-03 09:09:32,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:32,556 INFO L93 Difference]: Finished difference Result 217 states and 221 transitions. [2018-10-03 09:09:32,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-03 09:09:32,556 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 200 [2018-10-03 09:09:32,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:32,557 INFO L225 Difference]: With dead ends: 217 [2018-10-03 09:09:32,557 INFO L226 Difference]: Without dead ends: 203 [2018-10-03 09:09:32,557 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.4s impTime 93 [2018-10-03 09:09:32,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-03 09:09:32,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-03 09:09:32,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-03 09:09:32,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 205 transitions. [2018-10-03 09:09:32,563 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 205 transitions. Word has length 200 [2018-10-03 09:09:32,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:32,563 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 205 transitions. [2018-10-03 09:09:32,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-03 09:09:32,563 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 205 transitions. [2018-10-03 09:09:32,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-03 09:09:32,564 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:32,564 INFO L375 BasicCegarLoop]: trace histogram [94, 93, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:09:32,564 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:32,564 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:32,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1723516000, now seen corresponding path program 92 times [2018-10-03 09:09:32,564 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:32,564 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:32,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:32,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:32,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:34,704 INFO L134 CoverageAnalysis]: Checked inductivity of 8760 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:34,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:34,704 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:34,711 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:09:34,835 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:09:34,835 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:34,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 8760 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:35,175 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:35,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-03 09:09:35,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-03 09:09:35,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-03 09:09:35,177 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:35,177 INFO L87 Difference]: Start difference. First operand 203 states and 205 transitions. Second operand 96 states. [2018-10-03 09:09:35,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:35,599 INFO L93 Difference]: Finished difference Result 219 states and 223 transitions. [2018-10-03 09:09:35,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-03 09:09:35,599 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 202 [2018-10-03 09:09:35,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:35,600 INFO L225 Difference]: With dead ends: 219 [2018-10-03 09:09:35,600 INFO L226 Difference]: Without dead ends: 205 [2018-10-03 09:09:35,600 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.8s impTime 94 [2018-10-03 09:09:35,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-10-03 09:09:35,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-10-03 09:09:35,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-03 09:09:35,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 207 transitions. [2018-10-03 09:09:35,627 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 207 transitions. Word has length 202 [2018-10-03 09:09:35,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:35,627 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 207 transitions. [2018-10-03 09:09:35,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-03 09:09:35,627 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 207 transitions. [2018-10-03 09:09:35,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-03 09:09:35,628 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:35,628 INFO L375 BasicCegarLoop]: trace histogram [95, 94, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:09:35,628 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:35,628 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:35,629 INFO L82 PathProgramCache]: Analyzing trace with hash 48333916, now seen corresponding path program 93 times [2018-10-03 09:09:35,629 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:35,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:35,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:35,629 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:35,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:35,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:37,369 INFO L134 CoverageAnalysis]: Checked inductivity of 8948 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:37,369 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:37,370 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:37,377 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:09:37,701 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 95 check-sat command(s) [2018-10-03 09:09:37,701 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:37,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:38,045 INFO L134 CoverageAnalysis]: Checked inductivity of 8948 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:38,067 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:38,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-03 09:09:38,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-03 09:09:38,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-03 09:09:38,068 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:38,068 INFO L87 Difference]: Start difference. First operand 205 states and 207 transitions. Second operand 97 states. [2018-10-03 09:09:38,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:38,358 INFO L93 Difference]: Finished difference Result 221 states and 225 transitions. [2018-10-03 09:09:38,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-03 09:09:38,358 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 204 [2018-10-03 09:09:38,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:38,359 INFO L225 Difference]: With dead ends: 221 [2018-10-03 09:09:38,359 INFO L226 Difference]: Without dead ends: 207 [2018-10-03 09:09:38,359 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime 95 [2018-10-03 09:09:38,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-03 09:09:38,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-10-03 09:09:38,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-03 09:09:38,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 209 transitions. [2018-10-03 09:09:38,367 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 209 transitions. Word has length 204 [2018-10-03 09:09:38,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:38,367 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 209 transitions. [2018-10-03 09:09:38,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-03 09:09:38,367 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 209 transitions. [2018-10-03 09:09:38,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-03 09:09:38,368 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:38,368 INFO L375 BasicCegarLoop]: trace histogram [96, 95, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:09:38,368 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:38,369 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:38,369 INFO L82 PathProgramCache]: Analyzing trace with hash 811087192, now seen corresponding path program 94 times [2018-10-03 09:09:38,369 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:38,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:38,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:38,370 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:38,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:40,434 INFO L134 CoverageAnalysis]: Checked inductivity of 9138 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:40,435 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:40,435 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 [2018-10-03 09:09:40,444 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:09:40,572 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:09:40,572 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:40,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:40,907 INFO L134 CoverageAnalysis]: Checked inductivity of 9138 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:40,928 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:40,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-03 09:09:40,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-03 09:09:40,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-03 09:09:40,930 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:40,930 INFO L87 Difference]: Start difference. First operand 207 states and 209 transitions. Second operand 98 states. [2018-10-03 09:09:41,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:41,353 INFO L93 Difference]: Finished difference Result 223 states and 227 transitions. [2018-10-03 09:09:41,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-03 09:09:41,353 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 206 [2018-10-03 09:09:41,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:41,354 INFO L225 Difference]: With dead ends: 223 [2018-10-03 09:09:41,354 INFO L226 Difference]: Without dead ends: 209 [2018-10-03 09:09:41,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.7s impTime 96 [2018-10-03 09:09:41,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-03 09:09:41,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-10-03 09:09:41,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-03 09:09:41,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 211 transitions. [2018-10-03 09:09:41,360 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 211 transitions. Word has length 206 [2018-10-03 09:09:41,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:41,361 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 211 transitions. [2018-10-03 09:09:41,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-03 09:09:41,361 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 211 transitions. [2018-10-03 09:09:41,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-03 09:09:41,361 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:41,362 INFO L375 BasicCegarLoop]: trace histogram [97, 96, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:09:41,362 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:41,362 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:41,362 INFO L82 PathProgramCache]: Analyzing trace with hash -622422188, now seen corresponding path program 95 times [2018-10-03 09:09:41,362 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:41,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:41,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:41,363 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:41,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9330 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:42,998 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:42,998 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 [2018-10-03 09:09:43,005 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:09:43,308 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 97 check-sat command(s) [2018-10-03 09:09:43,309 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:43,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:43,662 INFO L134 CoverageAnalysis]: Checked inductivity of 9330 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:43,684 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:43,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-03 09:09:43,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-03 09:09:43,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-03 09:09:43,686 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:43,686 INFO L87 Difference]: Start difference. First operand 209 states and 211 transitions. Second operand 99 states. [2018-10-03 09:09:43,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:43,964 INFO L93 Difference]: Finished difference Result 225 states and 229 transitions. [2018-10-03 09:09:43,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-03 09:09:43,964 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 208 [2018-10-03 09:09:43,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:43,965 INFO L225 Difference]: With dead ends: 225 [2018-10-03 09:09:43,965 INFO L226 Difference]: Without dead ends: 211 [2018-10-03 09:09:43,965 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime 97 [2018-10-03 09:09:43,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-03 09:09:43,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-03 09:09:43,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-03 09:09:43,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 213 transitions. [2018-10-03 09:09:43,971 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 213 transitions. Word has length 208 [2018-10-03 09:09:43,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:43,971 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 213 transitions. [2018-10-03 09:09:43,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-03 09:09:43,971 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 213 transitions. [2018-10-03 09:09:43,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-03 09:09:43,971 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:43,972 INFO L375 BasicCegarLoop]: trace histogram [98, 97, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:09:43,972 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:43,972 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:43,972 INFO L82 PathProgramCache]: Analyzing trace with hash 459565648, now seen corresponding path program 96 times [2018-10-03 09:09:43,972 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:43,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:43,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:43,973 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:43,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:45,709 INFO L134 CoverageAnalysis]: Checked inductivity of 9524 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:45,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:45,710 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:45,717 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:09:46,025 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 98 check-sat command(s) [2018-10-03 09:09:46,025 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:46,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:46,364 INFO L134 CoverageAnalysis]: Checked inductivity of 9524 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:46,385 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:46,385 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-03 09:09:46,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-03 09:09:46,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-03 09:09:46,387 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:46,387 INFO L87 Difference]: Start difference. First operand 211 states and 213 transitions. Second operand 100 states. [2018-10-03 09:09:46,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:46,760 INFO L93 Difference]: Finished difference Result 227 states and 231 transitions. [2018-10-03 09:09:46,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-03 09:09:46,760 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 210 [2018-10-03 09:09:46,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:46,761 INFO L225 Difference]: With dead ends: 227 [2018-10-03 09:09:46,761 INFO L226 Difference]: Without dead ends: 213 [2018-10-03 09:09:46,762 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime 98 [2018-10-03 09:09:46,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-03 09:09:46,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-10-03 09:09:46,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-03 09:09:46,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 215 transitions. [2018-10-03 09:09:46,768 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 215 transitions. Word has length 210 [2018-10-03 09:09:46,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:46,768 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 215 transitions. [2018-10-03 09:09:46,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-03 09:09:46,768 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 215 transitions. [2018-10-03 09:09:46,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-03 09:09:46,769 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:46,769 INFO L375 BasicCegarLoop]: trace histogram [99, 98, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:09:46,769 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:46,769 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:46,769 INFO L82 PathProgramCache]: Analyzing trace with hash 867790412, now seen corresponding path program 97 times [2018-10-03 09:09:46,769 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:46,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:46,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:46,770 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:46,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:48,992 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:48,993 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:48,993 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 [2018-10-03 09:09:49,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:49,139 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:49,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:49,499 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:49,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-03 09:09:49,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-03 09:09:49,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-03 09:09:49,500 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:49,501 INFO L87 Difference]: Start difference. First operand 213 states and 215 transitions. Second operand 101 states. [2018-10-03 09:09:49,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:49,869 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2018-10-03 09:09:49,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-03 09:09:49,869 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 212 [2018-10-03 09:09:49,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:49,870 INFO L225 Difference]: With dead ends: 229 [2018-10-03 09:09:49,870 INFO L226 Difference]: Without dead ends: 215 [2018-10-03 09:09:49,870 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.8s impTime 99 [2018-10-03 09:09:49,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-03 09:09:49,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-10-03 09:09:49,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-03 09:09:49,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 217 transitions. [2018-10-03 09:09:49,879 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 217 transitions. Word has length 212 [2018-10-03 09:09:49,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:49,879 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 217 transitions. [2018-10-03 09:09:49,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-03 09:09:49,879 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 217 transitions. [2018-10-03 09:09:49,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-03 09:09:49,880 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:49,880 INFO L375 BasicCegarLoop]: trace histogram [100, 99, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:09:49,880 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:49,880 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:49,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1965202616, now seen corresponding path program 98 times [2018-10-03 09:09:49,881 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:49,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:49,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:49,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:49,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:51,836 INFO L134 CoverageAnalysis]: Checked inductivity of 9918 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:51,836 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:51,836 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 [2018-10-03 09:09:51,844 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:09:51,987 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:09:51,988 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:51,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 9918 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:52,587 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:52,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-03 09:09:52,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-03 09:09:52,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-03 09:09:52,589 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:52,589 INFO L87 Difference]: Start difference. First operand 215 states and 217 transitions. Second operand 102 states. [2018-10-03 09:09:52,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:52,991 INFO L93 Difference]: Finished difference Result 231 states and 235 transitions. [2018-10-03 09:09:52,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-03 09:09:52,991 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 214 [2018-10-03 09:09:52,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:52,993 INFO L225 Difference]: With dead ends: 231 [2018-10-03 09:09:52,993 INFO L226 Difference]: Without dead ends: 217 [2018-10-03 09:09:52,993 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.6s impTime 100 [2018-10-03 09:09:52,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-03 09:09:53,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-10-03 09:09:53,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-10-03 09:09:53,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 219 transitions. [2018-10-03 09:09:53,002 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 219 transitions. Word has length 214 [2018-10-03 09:09:53,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:53,002 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 219 transitions. [2018-10-03 09:09:53,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-03 09:09:53,002 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 219 transitions. [2018-10-03 09:09:53,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-03 09:09:53,003 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:53,003 INFO L375 BasicCegarLoop]: trace histogram [101, 100, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:09:53,004 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:53,004 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:53,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1462236860, now seen corresponding path program 99 times [2018-10-03 09:09:53,004 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:53,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:53,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:53,005 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:53,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:54,594 INFO L134 CoverageAnalysis]: Checked inductivity of 10118 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:54,594 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:54,594 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 [2018-10-03 09:09:54,601 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:09:54,976 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 101 check-sat command(s) [2018-10-03 09:09:54,976 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:54,981 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:55,324 INFO L134 CoverageAnalysis]: Checked inductivity of 10118 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:55,345 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:55,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-03 09:09:55,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-03 09:09:55,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-03 09:09:55,347 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:55,347 INFO L87 Difference]: Start difference. First operand 217 states and 219 transitions. Second operand 103 states. [2018-10-03 09:09:55,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:55,614 INFO L93 Difference]: Finished difference Result 233 states and 237 transitions. [2018-10-03 09:09:55,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-03 09:09:55,615 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 216 [2018-10-03 09:09:55,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:55,616 INFO L225 Difference]: With dead ends: 233 [2018-10-03 09:09:55,616 INFO L226 Difference]: Without dead ends: 219 [2018-10-03 09:09:55,616 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime 101 [2018-10-03 09:09:55,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-03 09:09:55,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-10-03 09:09:55,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-03 09:09:55,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 221 transitions. [2018-10-03 09:09:55,624 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 221 transitions. Word has length 216 [2018-10-03 09:09:55,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:55,624 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 221 transitions. [2018-10-03 09:09:55,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-03 09:09:55,624 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 221 transitions. [2018-10-03 09:09:55,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-03 09:09:55,625 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:55,625 INFO L375 BasicCegarLoop]: trace histogram [102, 101, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:09:55,626 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:55,626 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:55,626 INFO L82 PathProgramCache]: Analyzing trace with hash 851517504, now seen corresponding path program 100 times [2018-10-03 09:09:55,626 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:55,626 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:55,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:55,627 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:55,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 10320 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:57,883 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:57,883 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:57,891 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:09:58,027 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:09:58,027 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:58,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:58,513 INFO L134 CoverageAnalysis]: Checked inductivity of 10320 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:09:58,533 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:58,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-03 09:09:58,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-03 09:09:58,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-03 09:09:58,535 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:58,535 INFO L87 Difference]: Start difference. First operand 219 states and 221 transitions. Second operand 104 states. [2018-10-03 09:09:58,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:58,973 INFO L93 Difference]: Finished difference Result 235 states and 239 transitions. [2018-10-03 09:09:58,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-03 09:09:58,973 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 218 [2018-10-03 09:09:58,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:58,974 INFO L225 Difference]: With dead ends: 235 [2018-10-03 09:09:58,974 INFO L226 Difference]: Without dead ends: 221 [2018-10-03 09:09:58,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 1.9s impTime 102 [2018-10-03 09:09:58,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-03 09:09:58,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-10-03 09:09:58,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-03 09:09:58,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 223 transitions. [2018-10-03 09:09:58,979 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 223 transitions. Word has length 218 [2018-10-03 09:09:58,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:58,980 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 223 transitions. [2018-10-03 09:09:58,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-03 09:09:58,980 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 223 transitions. [2018-10-03 09:09:58,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-03 09:09:58,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:58,981 INFO L375 BasicCegarLoop]: trace histogram [103, 102, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:09:58,981 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:58,981 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:58,981 INFO L82 PathProgramCache]: Analyzing trace with hash -423598020, now seen corresponding path program 101 times [2018-10-03 09:09:58,981 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:58,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:58,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:58,982 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:58,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:01,057 INFO L134 CoverageAnalysis]: Checked inductivity of 10524 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:01,058 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:01,058 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:10:01,066 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:10:01,401 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 103 check-sat command(s) [2018-10-03 09:10:01,402 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:01,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:01,761 INFO L134 CoverageAnalysis]: Checked inductivity of 10524 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:01,782 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:01,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-03 09:10:01,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-03 09:10:01,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-03 09:10:01,783 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:01,784 INFO L87 Difference]: Start difference. First operand 221 states and 223 transitions. Second operand 105 states. [2018-10-03 09:10:02,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:02,295 INFO L93 Difference]: Finished difference Result 237 states and 241 transitions. [2018-10-03 09:10:02,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-03 09:10:02,296 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 220 [2018-10-03 09:10:02,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:02,297 INFO L225 Difference]: With dead ends: 237 [2018-10-03 09:10:02,297 INFO L226 Difference]: Without dead ends: 223 [2018-10-03 09:10:02,297 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.6s impTime 103 [2018-10-03 09:10:02,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-03 09:10:02,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-10-03 09:10:02,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-03 09:10:02,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 225 transitions. [2018-10-03 09:10:02,305 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 225 transitions. Word has length 220 [2018-10-03 09:10:02,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:02,305 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 225 transitions. [2018-10-03 09:10:02,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-03 09:10:02,305 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 225 transitions. [2018-10-03 09:10:02,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-03 09:10:02,306 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:02,306 INFO L375 BasicCegarLoop]: trace histogram [104, 103, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:10:02,306 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:02,306 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:02,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1743937224, now seen corresponding path program 102 times [2018-10-03 09:10:02,307 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:02,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:02,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:02,307 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:02,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:04,835 INFO L134 CoverageAnalysis]: Checked inductivity of 10730 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:04,835 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:04,835 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 [2018-10-03 09:10:04,843 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:10:05,180 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 104 check-sat command(s) [2018-10-03 09:10:05,180 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:05,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:05,556 INFO L134 CoverageAnalysis]: Checked inductivity of 10730 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:05,577 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:05,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-03 09:10:05,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-03 09:10:05,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-03 09:10:05,578 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:05,578 INFO L87 Difference]: Start difference. First operand 223 states and 225 transitions. Second operand 106 states. [2018-10-03 09:10:06,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:06,090 INFO L93 Difference]: Finished difference Result 239 states and 243 transitions. [2018-10-03 09:10:06,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-03 09:10:06,091 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 222 [2018-10-03 09:10:06,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:06,091 INFO L225 Difference]: With dead ends: 239 [2018-10-03 09:10:06,091 INFO L226 Difference]: Without dead ends: 225 [2018-10-03 09:10:06,092 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.1s impTime 104 [2018-10-03 09:10:06,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-10-03 09:10:06,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-10-03 09:10:06,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-03 09:10:06,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 227 transitions. [2018-10-03 09:10:06,100 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 227 transitions. Word has length 222 [2018-10-03 09:10:06,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:06,100 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 227 transitions. [2018-10-03 09:10:06,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-03 09:10:06,100 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 227 transitions. [2018-10-03 09:10:06,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-03 09:10:06,101 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:06,101 INFO L375 BasicCegarLoop]: trace histogram [105, 104, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:10:06,101 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:06,101 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:06,101 INFO L82 PathProgramCache]: Analyzing trace with hash 720407348, now seen corresponding path program 103 times [2018-10-03 09:10:06,101 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:06,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:06,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:06,102 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:06,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 10938 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:08,077 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:08,077 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:10:08,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:08,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:08,666 INFO L134 CoverageAnalysis]: Checked inductivity of 10938 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:08,686 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:08,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-03 09:10:08,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-03 09:10:08,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-03 09:10:08,688 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:08,688 INFO L87 Difference]: Start difference. First operand 225 states and 227 transitions. Second operand 107 states. [2018-10-03 09:10:09,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:09,080 INFO L93 Difference]: Finished difference Result 241 states and 245 transitions. [2018-10-03 09:10:09,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-03 09:10:09,080 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 224 [2018-10-03 09:10:09,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:09,081 INFO L225 Difference]: With dead ends: 241 [2018-10-03 09:10:09,081 INFO L226 Difference]: Without dead ends: 227 [2018-10-03 09:10:09,081 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.5s impTime 105 [2018-10-03 09:10:09,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-03 09:10:09,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-10-03 09:10:09,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-03 09:10:09,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 229 transitions. [2018-10-03 09:10:09,090 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 229 transitions. Word has length 224 [2018-10-03 09:10:09,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:09,090 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 229 transitions. [2018-10-03 09:10:09,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-03 09:10:09,090 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 229 transitions. [2018-10-03 09:10:09,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-03 09:10:09,091 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:09,091 INFO L375 BasicCegarLoop]: trace histogram [106, 105, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:10:09,092 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:09,092 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:09,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1866406352, now seen corresponding path program 104 times [2018-10-03 09:10:09,092 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:09,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:09,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:09,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:09,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 11148 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:10,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:10,651 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 [2018-10-03 09:10:10,660 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:10:10,804 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:10:10,804 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:10,809 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:11,169 INFO L134 CoverageAnalysis]: Checked inductivity of 11148 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:11,190 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:11,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-03 09:10:11,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-03 09:10:11,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-03 09:10:11,191 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:11,191 INFO L87 Difference]: Start difference. First operand 227 states and 229 transitions. Second operand 108 states. [2018-10-03 09:10:11,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:11,510 INFO L93 Difference]: Finished difference Result 243 states and 247 transitions. [2018-10-03 09:10:11,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-03 09:10:11,511 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 226 [2018-10-03 09:10:11,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:11,511 INFO L225 Difference]: With dead ends: 243 [2018-10-03 09:10:11,511 INFO L226 Difference]: Without dead ends: 229 [2018-10-03 09:10:11,512 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime 106 [2018-10-03 09:10:11,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-10-03 09:10:11,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-10-03 09:10:11,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-10-03 09:10:11,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 231 transitions. [2018-10-03 09:10:11,518 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 231 transitions. Word has length 226 [2018-10-03 09:10:11,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:11,518 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 231 transitions. [2018-10-03 09:10:11,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-03 09:10:11,518 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 231 transitions. [2018-10-03 09:10:11,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-03 09:10:11,518 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:11,519 INFO L375 BasicCegarLoop]: trace histogram [107, 106, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:10:11,519 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:11,519 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:11,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1008307668, now seen corresponding path program 105 times [2018-10-03 09:10:11,519 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:11,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:11,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:11,520 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:11,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 11360 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:13,363 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:13,363 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 [2018-10-03 09:10:13,370 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:10:13,752 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 107 check-sat command(s) [2018-10-03 09:10:13,752 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:13,758 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:14,158 INFO L134 CoverageAnalysis]: Checked inductivity of 11360 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:14,179 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:14,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-03 09:10:14,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-03 09:10:14,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-03 09:10:14,180 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:14,180 INFO L87 Difference]: Start difference. First operand 229 states and 231 transitions. Second operand 109 states. [2018-10-03 09:10:14,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:14,501 INFO L93 Difference]: Finished difference Result 245 states and 249 transitions. [2018-10-03 09:10:14,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-03 09:10:14,502 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 228 [2018-10-03 09:10:14,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:14,502 INFO L225 Difference]: With dead ends: 245 [2018-10-03 09:10:14,502 INFO L226 Difference]: Without dead ends: 231 [2018-10-03 09:10:14,503 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 107 [2018-10-03 09:10:14,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-03 09:10:14,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-10-03 09:10:14,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-03 09:10:14,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 233 transitions. [2018-10-03 09:10:14,508 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 233 transitions. Word has length 228 [2018-10-03 09:10:14,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:14,508 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 233 transitions. [2018-10-03 09:10:14,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-03 09:10:14,509 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 233 transitions. [2018-10-03 09:10:14,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-03 09:10:14,509 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:14,509 INFO L375 BasicCegarLoop]: trace histogram [108, 107, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:10:14,509 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:14,509 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:14,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1009193176, now seen corresponding path program 106 times [2018-10-03 09:10:14,510 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:14,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:14,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:14,510 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:14,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:16,552 INFO L134 CoverageAnalysis]: Checked inductivity of 11574 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:16,553 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:16,553 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:10:16,560 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:10:16,712 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:10:16,713 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:16,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:17,094 INFO L134 CoverageAnalysis]: Checked inductivity of 11574 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:17,115 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:17,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-03 09:10:17,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-03 09:10:17,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-03 09:10:17,116 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:17,117 INFO L87 Difference]: Start difference. First operand 231 states and 233 transitions. Second operand 110 states. [2018-10-03 09:10:17,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:17,645 INFO L93 Difference]: Finished difference Result 247 states and 251 transitions. [2018-10-03 09:10:17,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-03 09:10:17,645 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 230 [2018-10-03 09:10:17,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:17,646 INFO L225 Difference]: With dead ends: 247 [2018-10-03 09:10:17,646 INFO L226 Difference]: Without dead ends: 233 [2018-10-03 09:10:17,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.7s impTime 108 [2018-10-03 09:10:17,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-10-03 09:10:17,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-10-03 09:10:17,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-10-03 09:10:17,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 235 transitions. [2018-10-03 09:10:17,652 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 235 transitions. Word has length 230 [2018-10-03 09:10:17,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:17,652 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 235 transitions. [2018-10-03 09:10:17,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-03 09:10:17,652 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 235 transitions. [2018-10-03 09:10:17,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-03 09:10:17,653 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:17,653 INFO L375 BasicCegarLoop]: trace histogram [109, 108, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:10:17,654 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:17,654 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:17,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1860166364, now seen corresponding path program 107 times [2018-10-03 09:10:17,654 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:17,654 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:17,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:17,655 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:17,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:20,592 INFO L134 CoverageAnalysis]: Checked inductivity of 11790 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:20,593 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:20,593 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:10:20,601 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:10:20,978 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 109 check-sat command(s) [2018-10-03 09:10:20,978 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:20,984 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:21,362 INFO L134 CoverageAnalysis]: Checked inductivity of 11790 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:21,383 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:21,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-03 09:10:21,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-03 09:10:21,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-03 09:10:21,385 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:21,385 INFO L87 Difference]: Start difference. First operand 233 states and 235 transitions. Second operand 111 states. [2018-10-03 09:10:21,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:21,989 INFO L93 Difference]: Finished difference Result 249 states and 253 transitions. [2018-10-03 09:10:21,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-03 09:10:21,989 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 232 [2018-10-03 09:10:21,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:21,990 INFO L225 Difference]: With dead ends: 249 [2018-10-03 09:10:21,990 INFO L226 Difference]: Without dead ends: 235 [2018-10-03 09:10:21,990 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.5s impTime 109 [2018-10-03 09:10:21,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-03 09:10:21,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-10-03 09:10:21,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-03 09:10:21,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 237 transitions. [2018-10-03 09:10:21,996 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 237 transitions. Word has length 232 [2018-10-03 09:10:21,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:21,996 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 237 transitions. [2018-10-03 09:10:21,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-03 09:10:21,997 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 237 transitions. [2018-10-03 09:10:21,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-03 09:10:21,997 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:21,997 INFO L375 BasicCegarLoop]: trace histogram [110, 109, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:10:21,997 INFO L423 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:21,997 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:21,998 INFO L82 PathProgramCache]: Analyzing trace with hash 693353504, now seen corresponding path program 108 times [2018-10-03 09:10:21,998 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:21,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:21,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:21,998 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:21,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:24,230 INFO L134 CoverageAnalysis]: Checked inductivity of 12008 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:24,230 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:24,230 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 [2018-10-03 09:10:24,237 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:10:24,645 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 110 check-sat command(s) [2018-10-03 09:10:24,645 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:24,651 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:25,040 INFO L134 CoverageAnalysis]: Checked inductivity of 12008 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:25,061 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:25,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-03 09:10:25,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-03 09:10:25,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-03 09:10:25,063 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:25,063 INFO L87 Difference]: Start difference. First operand 235 states and 237 transitions. Second operand 112 states. [2018-10-03 09:10:25,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:25,525 INFO L93 Difference]: Finished difference Result 251 states and 255 transitions. [2018-10-03 09:10:25,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-03 09:10:25,526 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 234 [2018-10-03 09:10:25,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:25,526 INFO L225 Difference]: With dead ends: 251 [2018-10-03 09:10:25,526 INFO L226 Difference]: Without dead ends: 237 [2018-10-03 09:10:25,527 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.7s impTime 110 [2018-10-03 09:10:25,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-10-03 09:10:25,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-10-03 09:10:25,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-10-03 09:10:25,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 239 transitions. [2018-10-03 09:10:25,533 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 239 transitions. Word has length 234 [2018-10-03 09:10:25,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:25,533 INFO L480 AbstractCegarLoop]: Abstraction has 237 states and 239 transitions. [2018-10-03 09:10:25,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-03 09:10:25,533 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 239 transitions. [2018-10-03 09:10:25,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-03 09:10:25,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:25,534 INFO L375 BasicCegarLoop]: trace histogram [111, 110, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:10:25,534 INFO L423 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:25,534 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:25,534 INFO L82 PathProgramCache]: Analyzing trace with hash -2095346660, now seen corresponding path program 109 times [2018-10-03 09:10:25,534 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:25,534 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:25,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:25,535 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:25,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:28,143 INFO L134 CoverageAnalysis]: Checked inductivity of 12228 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:28,144 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:28,144 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:10:28,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:28,308 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:28,696 INFO L134 CoverageAnalysis]: Checked inductivity of 12228 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:28,717 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:28,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-10-03 09:10:28,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-03 09:10:28,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-03 09:10:28,719 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:28,719 INFO L87 Difference]: Start difference. First operand 237 states and 239 transitions. Second operand 113 states. [2018-10-03 09:10:29,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:29,177 INFO L93 Difference]: Finished difference Result 253 states and 257 transitions. [2018-10-03 09:10:29,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-03 09:10:29,178 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 236 [2018-10-03 09:10:29,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:29,178 INFO L225 Difference]: With dead ends: 253 [2018-10-03 09:10:29,178 INFO L226 Difference]: Without dead ends: 239 [2018-10-03 09:10:29,179 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.2s impTime 111 [2018-10-03 09:10:29,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-10-03 09:10:29,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-10-03 09:10:29,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-03 09:10:29,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 241 transitions. [2018-10-03 09:10:29,187 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 241 transitions. Word has length 236 [2018-10-03 09:10:29,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:29,188 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 241 transitions. [2018-10-03 09:10:29,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-03 09:10:29,188 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 241 transitions. [2018-10-03 09:10:29,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-03 09:10:29,189 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:29,189 INFO L375 BasicCegarLoop]: trace histogram [112, 111, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:10:29,189 INFO L423 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:29,189 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:29,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1976611560, now seen corresponding path program 110 times [2018-10-03 09:10:29,190 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:29,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:29,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:29,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:29,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:32,028 INFO L134 CoverageAnalysis]: Checked inductivity of 12450 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:32,029 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:32,029 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 [2018-10-03 09:10:32,036 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:10:32,187 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:10:32,187 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:32,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 12450 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:32,594 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:32,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-10-03 09:10:32,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-03 09:10:32,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-03 09:10:32,596 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:32,596 INFO L87 Difference]: Start difference. First operand 239 states and 241 transitions. Second operand 114 states. [2018-10-03 09:10:33,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:33,188 INFO L93 Difference]: Finished difference Result 255 states and 259 transitions. [2018-10-03 09:10:33,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-03 09:10:33,189 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 238 [2018-10-03 09:10:33,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:33,189 INFO L225 Difference]: With dead ends: 255 [2018-10-03 09:10:33,189 INFO L226 Difference]: Without dead ends: 241 [2018-10-03 09:10:33,190 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.4s impTime 112 [2018-10-03 09:10:33,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-10-03 09:10:33,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-10-03 09:10:33,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-03 09:10:33,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 243 transitions. [2018-10-03 09:10:33,196 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 243 transitions. Word has length 238 [2018-10-03 09:10:33,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:33,196 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 243 transitions. [2018-10-03 09:10:33,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-03 09:10:33,196 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 243 transitions. [2018-10-03 09:10:33,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-03 09:10:33,197 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:33,197 INFO L375 BasicCegarLoop]: trace histogram [113, 112, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:10:33,197 INFO L423 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:33,197 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:33,197 INFO L82 PathProgramCache]: Analyzing trace with hash 458669844, now seen corresponding path program 111 times [2018-10-03 09:10:33,197 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:33,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:33,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:33,198 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:33,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:35,697 INFO L134 CoverageAnalysis]: Checked inductivity of 12674 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:35,697 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:35,697 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 [2018-10-03 09:10:35,704 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:10:36,128 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 113 check-sat command(s) [2018-10-03 09:10:36,128 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:36,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:36,527 INFO L134 CoverageAnalysis]: Checked inductivity of 12674 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:36,547 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:36,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-10-03 09:10:36,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-10-03 09:10:36,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-10-03 09:10:36,548 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:36,549 INFO L87 Difference]: Start difference. First operand 241 states and 243 transitions. Second operand 115 states. [2018-10-03 09:10:37,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:37,114 INFO L93 Difference]: Finished difference Result 257 states and 261 transitions. [2018-10-03 09:10:37,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-10-03 09:10:37,114 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 240 [2018-10-03 09:10:37,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:37,115 INFO L225 Difference]: With dead ends: 257 [2018-10-03 09:10:37,115 INFO L226 Difference]: Without dead ends: 243 [2018-10-03 09:10:37,115 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.1s impTime 113 [2018-10-03 09:10:37,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-03 09:10:37,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-10-03 09:10:37,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-10-03 09:10:37,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 245 transitions. [2018-10-03 09:10:37,121 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 245 transitions. Word has length 240 [2018-10-03 09:10:37,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:37,122 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 245 transitions. [2018-10-03 09:10:37,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-10-03 09:10:37,122 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 245 transitions. [2018-10-03 09:10:37,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-03 09:10:37,122 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:37,123 INFO L375 BasicCegarLoop]: trace histogram [114, 113, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:10:37,123 INFO L423 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:37,123 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:37,123 INFO L82 PathProgramCache]: Analyzing trace with hash 6922768, now seen corresponding path program 112 times [2018-10-03 09:10:37,123 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:37,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:37,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:37,124 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:37,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:39,820 INFO L134 CoverageAnalysis]: Checked inductivity of 12900 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:39,820 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:39,820 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:10:39,827 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:10:39,988 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:10:39,988 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:39,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 12900 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:40,593 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:40,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-10-03 09:10:40,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-03 09:10:40,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-03 09:10:40,595 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:40,595 INFO L87 Difference]: Start difference. First operand 243 states and 245 transitions. Second operand 116 states. [2018-10-03 09:10:41,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:41,127 INFO L93 Difference]: Finished difference Result 259 states and 263 transitions. [2018-10-03 09:10:41,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-03 09:10:41,127 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 242 [2018-10-03 09:10:41,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:41,128 INFO L225 Difference]: With dead ends: 259 [2018-10-03 09:10:41,128 INFO L226 Difference]: Without dead ends: 245 [2018-10-03 09:10:41,128 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.2s impTime 114 [2018-10-03 09:10:41,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-10-03 09:10:41,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-10-03 09:10:41,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-10-03 09:10:41,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 247 transitions. [2018-10-03 09:10:41,134 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 247 transitions. Word has length 242 [2018-10-03 09:10:41,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:41,134 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 247 transitions. [2018-10-03 09:10:41,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-03 09:10:41,135 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 247 transitions. [2018-10-03 09:10:41,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-03 09:10:41,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:41,135 INFO L375 BasicCegarLoop]: trace histogram [115, 114, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:10:41,135 INFO L423 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:41,135 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:41,136 INFO L82 PathProgramCache]: Analyzing trace with hash -330320372, now seen corresponding path program 113 times [2018-10-03 09:10:41,136 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:41,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:41,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:41,136 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:41,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:44,610 INFO L134 CoverageAnalysis]: Checked inductivity of 13128 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:44,610 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:44,610 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 [2018-10-03 09:10:44,617 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:10:45,032 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 115 check-sat command(s) [2018-10-03 09:10:45,032 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:45,039 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:45,444 INFO L134 CoverageAnalysis]: Checked inductivity of 13128 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:45,465 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:45,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2018-10-03 09:10:45,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-10-03 09:10:45,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-10-03 09:10:45,467 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:45,467 INFO L87 Difference]: Start difference. First operand 245 states and 247 transitions. Second operand 117 states. [2018-10-03 09:10:46,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:46,110 INFO L93 Difference]: Finished difference Result 261 states and 265 transitions. [2018-10-03 09:10:46,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-10-03 09:10:46,110 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 244 [2018-10-03 09:10:46,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:46,111 INFO L225 Difference]: With dead ends: 261 [2018-10-03 09:10:46,111 INFO L226 Difference]: Without dead ends: 247 [2018-10-03 09:10:46,111 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 3.0s impTime 115 [2018-10-03 09:10:46,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-03 09:10:46,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-10-03 09:10:46,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-10-03 09:10:46,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 249 transitions. [2018-10-03 09:10:46,117 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 249 transitions. Word has length 244 [2018-10-03 09:10:46,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:46,117 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 249 transitions. [2018-10-03 09:10:46,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-10-03 09:10:46,117 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 249 transitions. [2018-10-03 09:10:46,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-03 09:10:46,118 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:46,118 INFO L375 BasicCegarLoop]: trace histogram [116, 115, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:10:46,118 INFO L423 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:46,118 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:46,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1996536584, now seen corresponding path program 114 times [2018-10-03 09:10:46,119 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:46,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:46,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:46,119 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:46,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:49,042 INFO L134 CoverageAnalysis]: Checked inductivity of 13358 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:49,042 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:49,042 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:10:49,050 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:10:49,465 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 116 check-sat command(s) [2018-10-03 09:10:49,465 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:49,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:49,874 INFO L134 CoverageAnalysis]: Checked inductivity of 13358 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:49,895 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:49,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2018-10-03 09:10:49,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-10-03 09:10:49,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-10-03 09:10:49,896 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:49,896 INFO L87 Difference]: Start difference. First operand 247 states and 249 transitions. Second operand 118 states. [2018-10-03 09:10:50,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:50,455 INFO L93 Difference]: Finished difference Result 263 states and 267 transitions. [2018-10-03 09:10:50,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-10-03 09:10:50,455 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 246 [2018-10-03 09:10:50,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:50,456 INFO L225 Difference]: With dead ends: 263 [2018-10-03 09:10:50,456 INFO L226 Difference]: Without dead ends: 249 [2018-10-03 09:10:50,456 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.4s impTime 116 [2018-10-03 09:10:50,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-10-03 09:10:50,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-10-03 09:10:50,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-10-03 09:10:50,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 251 transitions. [2018-10-03 09:10:50,463 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 251 transitions. Word has length 246 [2018-10-03 09:10:50,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:50,463 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 251 transitions. [2018-10-03 09:10:50,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-10-03 09:10:50,463 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 251 transitions. [2018-10-03 09:10:50,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-03 09:10:50,463 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:50,464 INFO L375 BasicCegarLoop]: trace histogram [117, 116, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:10:50,464 INFO L423 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:50,464 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:50,464 INFO L82 PathProgramCache]: Analyzing trace with hash 428110084, now seen corresponding path program 115 times [2018-10-03 09:10:50,464 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:50,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:50,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:50,465 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:50,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:52,752 INFO L134 CoverageAnalysis]: Checked inductivity of 13590 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:52,753 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:52,753 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 [2018-10-03 09:10:52,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:52,919 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:53,326 INFO L134 CoverageAnalysis]: Checked inductivity of 13590 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:53,346 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:53,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2018-10-03 09:10:53,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-10-03 09:10:53,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-10-03 09:10:53,348 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:53,348 INFO L87 Difference]: Start difference. First operand 249 states and 251 transitions. Second operand 119 states. [2018-10-03 09:10:53,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:53,849 INFO L93 Difference]: Finished difference Result 265 states and 269 transitions. [2018-10-03 09:10:53,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-10-03 09:10:53,849 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 248 [2018-10-03 09:10:53,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:53,850 INFO L225 Difference]: With dead ends: 265 [2018-10-03 09:10:53,850 INFO L226 Difference]: Without dead ends: 251 [2018-10-03 09:10:53,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.8s impTime 117 [2018-10-03 09:10:53,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-10-03 09:10:53,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-10-03 09:10:53,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-03 09:10:53,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 253 transitions. [2018-10-03 09:10:53,857 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 253 transitions. Word has length 248 [2018-10-03 09:10:53,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:53,857 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 253 transitions. [2018-10-03 09:10:53,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-10-03 09:10:53,857 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 253 transitions. [2018-10-03 09:10:53,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-03 09:10:53,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:53,858 INFO L375 BasicCegarLoop]: trace histogram [118, 117, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:10:53,858 INFO L423 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:53,858 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:53,858 INFO L82 PathProgramCache]: Analyzing trace with hash 703764480, now seen corresponding path program 116 times [2018-10-03 09:10:53,859 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:53,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:53,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:53,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:53,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:55,850 INFO L134 CoverageAnalysis]: Checked inductivity of 13824 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:55,851 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:55,851 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:10:55,857 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:10:56,018 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:10:56,018 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:56,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:56,441 INFO L134 CoverageAnalysis]: Checked inductivity of 13824 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 09:10:56,461 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:56,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2018-10-03 09:10:56,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-10-03 09:10:56,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-10-03 09:10:56,463 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:56,463 INFO L87 Difference]: Start difference. First operand 251 states and 253 transitions. Second operand 120 states. [2018-10-03 09:10:56,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:56,881 INFO L93 Difference]: Finished difference Result 267 states and 271 transitions. [2018-10-03 09:10:56,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-10-03 09:10:56,882 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 250 [2018-10-03 09:10:56,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:56,882 INFO L225 Difference]: With dead ends: 267 [2018-10-03 09:10:56,882 INFO L226 Difference]: Without dead ends: 253 [2018-10-03 09:10:56,882 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.5s impTime 118 [2018-10-03 09:10:56,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-10-03 09:10:56,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-10-03 09:10:56,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-10-03 09:10:56,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 255 transitions. [2018-10-03 09:10:56,889 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 255 transitions. Word has length 250 [2018-10-03 09:10:56,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:56,889 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 255 transitions. [2018-10-03 09:10:56,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-10-03 09:10:56,889 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 255 transitions. [2018-10-03 09:10:56,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-03 09:10:56,890 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:56,890 INFO L375 BasicCegarLoop]: trace histogram [119, 118, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:10:56,890 INFO L423 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:56,890 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:56,890 INFO L82 PathProgramCache]: Analyzing trace with hash -680333316, now seen corresponding path program 117 times [2018-10-03 09:10:56,890 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:56,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:56,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:56,891 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:56,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-03 09:10:57,915 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-03 09:10:57,919 WARN L205 ceAbstractionStarter]: Timeout [2018-10-03 09:10:57,920 INFO L202 PluginConnector]: Adding new model fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 09:10:57 BoogieIcfgContainer [2018-10-03 09:10:57,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-03 09:10:57,921 INFO L168 Benchmark]: Toolchain (without parser) took 239180.80 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 420.5 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 384.2 MB). Peak memory consumption was 804.7 MB. Max. memory is 7.1 GB. [2018-10-03 09:10:57,923 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 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. [2018-10-03 09:10:57,923 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.72 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. [2018-10-03 09:10:57,923 INFO L168 Benchmark]: Boogie Preprocessor took 21.41 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. [2018-10-03 09:10:57,924 INFO L168 Benchmark]: RCFGBuilder took 350.91 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. [2018-10-03 09:10:57,924 INFO L168 Benchmark]: TraceAbstraction took 238764.12 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 420.5 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 363.1 MB). Peak memory consumption was 783.6 MB. Max. memory is 7.1 GB. [2018-10-03 09:10:57,927 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 38.72 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.41 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 350.91 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 238764.12 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 420.5 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 363.1 MB). Peak memory consumption was 783.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 83). Cancelled while BasicCegarLoop was analyzing trace of length 253 with TraceHistMax 119, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 251 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 238.6s OverallTime, 121 OverallIterations, 119 TraceHistogramMax, 28.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1080 SDtfs, 31 SDslu, 26106 SDs, 0 SdLazy, 14784 SolverSat, 242 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22700 GetRequests, 15673 SyntacticMatches, 0 SemanticMatches, 7027 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 172.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=253occurred in iteration=120, 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, 120 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.8s SsaConstructionTime, 18.4s SatisfiabilityAnalysisTime, 181.9s InterpolantComputationTime, 31367 NumberOfCodeBlocks, 31367 NumberOfCodeBlocksAsserted, 3677 NumberOfCheckSat, 31130 ConstructedInterpolants, 0 QuantifiedInterpolants, 14811344 SizeOfPredicates, 117 NumberOfNonLiveVariables, 76596 ConjunctsInSsa, 7137 ConjunctsInUnsatCore, 237 InterpolantComputations, 3 PerfectInterpolantSequences, 4188/1099464 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/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-03_09-10-57-937.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-03_09-10-57-937.csv Completed graceful shutdown