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/toy/tooDifficultLoopInvariant/Octopussy.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2eb0a67 [2018-10-03 09:20:42,657 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-03 09:20:42,659 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-03 09:20:42,671 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-03 09:20:42,672 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-03 09:20:42,673 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-03 09:20:42,674 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-03 09:20:42,676 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-03 09:20:42,677 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-03 09:20:42,678 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-03 09:20:42,679 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-03 09:20:42,679 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-03 09:20:42,680 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-03 09:20:42,681 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-03 09:20:42,682 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-03 09:20:42,683 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-03 09:20:42,684 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-03 09:20:42,686 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-03 09:20:42,688 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-03 09:20:42,689 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-03 09:20:42,690 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-03 09:20:42,692 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-03 09:20:42,694 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-03 09:20:42,694 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-03 09:20:42,694 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-03 09:20:42,695 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-03 09:20:42,696 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-03 09:20:42,697 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-03 09:20:42,698 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-03 09:20:42,699 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-03 09:20:42,699 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-03 09:20:42,700 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-03 09:20:42,702 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 09:20:42,718 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-03 09:20:42,718 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-03 09:20:42,719 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-03 09:20:42,719 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-03 09:20:42,720 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-03 09:20:42,720 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-03 09:20:42,720 INFO L133 SettingsManager]: * Use SBE=true [2018-10-03 09:20:42,720 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-03 09:20:42,721 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-03 09:20:42,721 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-03 09:20:42,721 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-03 09:20:42,721 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-03 09:20:42,721 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-03 09:20:42,722 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-03 09:20:42,722 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-03 09:20:42,722 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-03 09:20:42,722 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-03 09:20:42,722 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-03 09:20:42,723 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-03 09:20:42,723 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-03 09:20:42,723 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-03 09:20:42,723 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-03 09:20:42,723 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-03 09:20:42,724 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-03 09:20:42,724 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-03 09:20:42,724 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-03 09:20:42,724 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-03 09:20:42,724 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-03 09:20:42,724 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-03 09:20:42,725 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-03 09:20:42,725 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-03 09:20:42,784 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-03 09:20:42,799 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-03 09:20:42,806 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-03 09:20:42,807 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-03 09:20:42,808 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-03 09:20:42,808 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Octopussy.bpl [2018-10-03 09:20:42,809 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Octopussy.bpl' [2018-10-03 09:20:42,860 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-03 09:20:42,864 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-03 09:20:42,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-03 09:20:42,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-03 09:20:42,866 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-03 09:20:42,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:20:42" (1/1) ... [2018-10-03 09:20:42,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:20:42" (1/1) ... [2018-10-03 09:20:42,906 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-03 09:20:42,907 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-03 09:20:42,907 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-03 09:20:42,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-03 09:20:42,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-03 09:20:42,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-03 09:20:42,910 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-03 09:20:42,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:20:42" (1/1) ... [2018-10-03 09:20:42,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:20:42" (1/1) ... [2018-10-03 09:20:42,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:20:42" (1/1) ... [2018-10-03 09:20:42,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:20:42" (1/1) ... [2018-10-03 09:20:42,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:20:42" (1/1) ... [2018-10-03 09:20:42,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:20:42" (1/1) ... [2018-10-03 09:20:42,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:20:42" (1/1) ... [2018-10-03 09:20:42,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-03 09:20:42,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-03 09:20:42,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-03 09:20:42,932 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-03 09:20:42,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:20:42" (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 09:20:42,999 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-10-03 09:20:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-03 09:20:43,000 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-03 09:20:43,197 INFO L337 CfgBuilder]: Using library mode [2018-10-03 09:20:43,197 INFO L202 PluginConnector]: Adding new model Octopussy.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:20:43 BoogieIcfgContainer [2018-10-03 09:20:43,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-03 09:20:43,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-03 09:20:43,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-03 09:20:43,202 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-03 09:20:43,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:20:42" (1/2) ... [2018-10-03 09:20:43,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc9ee02 and model type Octopussy.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 09:20:43, skipping insertion in model container [2018-10-03 09:20:43,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:20:43" (2/2) ... [2018-10-03 09:20:43,206 INFO L112 eAbstractionObserver]: Analyzing ICFG Octopussy.bpl [2018-10-03 09:20:43,216 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-03 09:20:43,228 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-03 09:20:43,279 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-03 09:20:43,280 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-03 09:20:43,280 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-03 09:20:43,281 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-03 09:20:43,281 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-03 09:20:43,281 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-03 09:20:43,282 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-03 09:20:43,282 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-03 09:20:43,282 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-03 09:20:43,298 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-03 09:20:43,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-03 09:20:43,304 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:43,305 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-03 09:20:43,306 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:43,312 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:43,312 INFO L82 PathProgramCache]: Analyzing trace with hash 30048, now seen corresponding path program 1 times [2018-10-03 09:20:43,315 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:43,315 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:43,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:43,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:20:43,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:43,456 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 09:20:43,459 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-03 09:20:43,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-03 09:20:43,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-03 09:20:43,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-03 09:20:43,477 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:43,478 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-03 09:20:43,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:43,524 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-10-03 09:20:43,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-03 09:20:43,527 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-03 09:20:43,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:43,537 INFO L225 Difference]: With dead ends: 13 [2018-10-03 09:20:43,538 INFO L226 Difference]: Without dead ends: 5 [2018-10-03 09:20:43,541 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 09:20:43,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-03 09:20:43,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-03 09:20:43,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-03 09:20:43,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-03 09:20:43,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-03 09:20:43,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:43,576 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-03 09:20:43,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-03 09:20:43,576 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-03 09:20:43,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-03 09:20:43,576 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:43,577 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-03 09:20:43,577 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:43,577 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:43,577 INFO L82 PathProgramCache]: Analyzing trace with hash 927622, now seen corresponding path program 1 times [2018-10-03 09:20:43,577 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:43,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:43,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:43,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:20:43,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:43,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:43,734 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:43,735 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:20:43,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:20:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:43,772 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:43,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:43,890 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:43,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-03 09:20:43,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-03 09:20:43,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-03 09:20:43,891 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:43,892 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-10-03 09:20:43,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:43,975 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-03 09:20:43,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-03 09:20:43,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-10-03 09:20:43,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:43,976 INFO L225 Difference]: With dead ends: 8 [2018-10-03 09:20:43,977 INFO L226 Difference]: Without dead ends: 6 [2018-10-03 09:20:43,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 2 [2018-10-03 09:20:43,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-03 09:20:43,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-03 09:20:43,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-03 09:20:43,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-03 09:20:43,980 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-03 09:20:43,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:43,980 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-03 09:20:43,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-03 09:20:43,981 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-03 09:20:43,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-03 09:20:43,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:43,981 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-03 09:20:43,982 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:43,982 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:43,982 INFO L82 PathProgramCache]: Analyzing trace with hash 28752416, now seen corresponding path program 2 times [2018-10-03 09:20:43,982 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:43,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:43,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:43,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:20:43,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:44,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:44,280 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:44,280 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:20:44,296 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:20:44,330 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:20:44,330 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:44,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:44,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:44,459 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:44,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-03 09:20:44,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-03 09:20:44,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-03 09:20:44,460 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:44,460 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-10-03 09:20:44,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:44,500 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-03 09:20:44,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-03 09:20:44,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-10-03 09:20:44,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:44,501 INFO L225 Difference]: With dead ends: 9 [2018-10-03 09:20:44,502 INFO L226 Difference]: Without dead ends: 7 [2018-10-03 09:20:44,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 3 [2018-10-03 09:20:44,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-03 09:20:44,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-03 09:20:44,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-03 09:20:44,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-03 09:20:44,505 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-03 09:20:44,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:44,505 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-03 09:20:44,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-03 09:20:44,506 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-03 09:20:44,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-03 09:20:44,506 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:44,506 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-10-03 09:20:44,507 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:44,507 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:44,507 INFO L82 PathProgramCache]: Analyzing trace with hash 891321030, now seen corresponding path program 3 times [2018-10-03 09:20:44,507 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:44,508 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:44,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:44,509 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:44,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:44,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:44,660 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:44,660 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 09:20:44,672 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:20:44,690 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-03 09:20:44,691 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:44,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:44,770 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:44,790 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:44,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-03 09:20:44,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-03 09:20:44,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-03 09:20:44,791 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:44,791 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-10-03 09:20:44,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:44,820 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-03 09:20:44,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-03 09:20:44,821 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-10-03 09:20:44,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:44,822 INFO L225 Difference]: With dead ends: 10 [2018-10-03 09:20:44,822 INFO L226 Difference]: Without dead ends: 8 [2018-10-03 09:20:44,822 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 4 [2018-10-03 09:20:44,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-03 09:20:44,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-03 09:20:44,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-03 09:20:44,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-03 09:20:44,826 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-03 09:20:44,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:44,826 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-03 09:20:44,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-03 09:20:44,826 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-03 09:20:44,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-03 09:20:44,827 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:44,827 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-10-03 09:20:44,828 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:44,828 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:44,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1861144288, now seen corresponding path program 4 times [2018-10-03 09:20:44,828 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:44,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:44,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:44,830 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:44,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:44,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:45,139 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:45,140 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:45,140 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 09:20:45,150 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:20:45,174 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:20:45,174 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:45,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:45,207 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:45,229 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:45,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-03 09:20:45,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-03 09:20:45,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-03 09:20:45,230 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:45,230 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-10-03 09:20:45,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:45,272 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-03 09:20:45,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-03 09:20:45,273 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-10-03 09:20:45,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:45,274 INFO L225 Difference]: With dead ends: 11 [2018-10-03 09:20:45,274 INFO L226 Difference]: Without dead ends: 9 [2018-10-03 09:20:45,274 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 5 [2018-10-03 09:20:45,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-03 09:20:45,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-03 09:20:45,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-03 09:20:45,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-03 09:20:45,277 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-03 09:20:45,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:45,278 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-03 09:20:45,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-03 09:20:45,278 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-03 09:20:45,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-03 09:20:45,278 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:45,278 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-10-03 09:20:45,279 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:45,279 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:45,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1860894214, now seen corresponding path program 5 times [2018-10-03 09:20:45,279 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:45,279 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:45,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:45,280 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:45,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:45,415 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:45,415 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:45,416 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:20:45,427 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:20:45,448 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-03 09:20:45,448 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:45,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:45,578 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:45,599 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:45,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-03 09:20:45,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-03 09:20:45,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-03 09:20:45,600 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:45,600 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-10-03 09:20:45,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:45,623 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-03 09:20:45,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-03 09:20:45,624 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-03 09:20:45,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:45,624 INFO L225 Difference]: With dead ends: 12 [2018-10-03 09:20:45,624 INFO L226 Difference]: Without dead ends: 10 [2018-10-03 09:20:45,625 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 6 [2018-10-03 09:20:45,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-03 09:20:45,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-03 09:20:45,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-03 09:20:45,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-03 09:20:45,628 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-03 09:20:45,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:45,628 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-03 09:20:45,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-03 09:20:45,628 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-03 09:20:45,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-03 09:20:45,629 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:45,629 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-10-03 09:20:45,629 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:45,630 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:45,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1853141920, now seen corresponding path program 6 times [2018-10-03 09:20:45,630 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:45,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:45,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:45,631 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:45,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:45,742 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:45,743 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:45,743 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 09:20:45,753 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:20:45,763 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-03 09:20:45,764 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:45,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:45,802 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:45,824 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:45,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-03 09:20:45,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-03 09:20:45,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-03 09:20:45,825 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:45,826 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-10-03 09:20:45,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:45,861 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-03 09:20:45,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-03 09:20:45,862 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-10-03 09:20:45,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:45,863 INFO L225 Difference]: With dead ends: 13 [2018-10-03 09:20:45,863 INFO L226 Difference]: Without dead ends: 11 [2018-10-03 09:20:45,863 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7 [2018-10-03 09:20:45,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-03 09:20:45,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-03 09:20:45,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-03 09:20:45,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-03 09:20:45,867 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-03 09:20:45,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:45,867 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-03 09:20:45,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-03 09:20:45,867 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-03 09:20:45,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-03 09:20:45,868 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:45,868 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-10-03 09:20:45,868 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:45,868 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:45,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1612820806, now seen corresponding path program 7 times [2018-10-03 09:20:45,869 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:45,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:45,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:45,870 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:45,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:46,373 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:46,373 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:46,373 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:20:46,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:20:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:46,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:46,448 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:46,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-03 09:20:46,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-03 09:20:46,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-03 09:20:46,449 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:46,449 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-10-03 09:20:46,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:46,487 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-03 09:20:46,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-03 09:20:46,487 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-10-03 09:20:46,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:46,488 INFO L225 Difference]: With dead ends: 14 [2018-10-03 09:20:46,488 INFO L226 Difference]: Without dead ends: 12 [2018-10-03 09:20:46,488 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 8 [2018-10-03 09:20:46,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-03 09:20:46,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-03 09:20:46,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-03 09:20:46,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-03 09:20:46,491 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-03 09:20:46,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:46,492 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-03 09:20:46,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-03 09:20:46,492 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-03 09:20:46,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-03 09:20:46,492 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:46,492 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-10-03 09:20:46,493 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:46,493 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:46,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1542166432, now seen corresponding path program 8 times [2018-10-03 09:20:46,493 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:46,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:46,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:46,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:20:46,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:46,693 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:46,693 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:46,693 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:20:46,701 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:20:46,726 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:20:46,727 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:46,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:46,790 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:46,810 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:46,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-03 09:20:46,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-03 09:20:46,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-03 09:20:46,811 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:46,811 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-10-03 09:20:46,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:46,874 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-03 09:20:46,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-03 09:20:46,875 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-10-03 09:20:46,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:46,875 INFO L225 Difference]: With dead ends: 15 [2018-10-03 09:20:46,876 INFO L226 Difference]: Without dead ends: 13 [2018-10-03 09:20:46,876 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 9 [2018-10-03 09:20:46,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-03 09:20:46,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-03 09:20:46,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-03 09:20:46,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-03 09:20:46,879 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-03 09:20:46,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:46,879 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-03 09:20:46,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-03 09:20:46,879 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-03 09:20:46,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-03 09:20:46,880 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:46,880 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-10-03 09:20:46,880 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:46,881 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:46,881 INFO L82 PathProgramCache]: Analyzing trace with hash -562523002, now seen corresponding path program 9 times [2018-10-03 09:20:46,881 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:46,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:46,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:46,882 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:46,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:47,017 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:47,018 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:47,019 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:20:47,028 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:20:47,060 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-03 09:20:47,061 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:47,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:47,112 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:47,135 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:47,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-03 09:20:47,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-03 09:20:47,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-03 09:20:47,136 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:47,136 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-10-03 09:20:47,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:47,164 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-03 09:20:47,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-03 09:20:47,165 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-10-03 09:20:47,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:47,165 INFO L225 Difference]: With dead ends: 16 [2018-10-03 09:20:47,166 INFO L226 Difference]: Without dead ends: 14 [2018-10-03 09:20:47,166 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 10 [2018-10-03 09:20:47,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-03 09:20:47,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-03 09:20:47,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-03 09:20:47,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-03 09:20:47,169 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-03 09:20:47,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:47,169 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-03 09:20:47,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-03 09:20:47,170 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-03 09:20:47,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-03 09:20:47,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:47,170 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-10-03 09:20:47,171 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:47,171 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:47,171 INFO L82 PathProgramCache]: Analyzing trace with hash -258347744, now seen corresponding path program 10 times [2018-10-03 09:20:47,171 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:47,171 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:47,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:47,172 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:47,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:47,425 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:47,425 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:47,426 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 09:20:47,433 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:20:47,448 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:20:47,448 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:47,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:47,499 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:47,519 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:47,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-03 09:20:47,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-03 09:20:47,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-03 09:20:47,520 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:47,521 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-10-03 09:20:47,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:47,588 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-03 09:20:47,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-03 09:20:47,589 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-10-03 09:20:47,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:47,589 INFO L225 Difference]: With dead ends: 17 [2018-10-03 09:20:47,589 INFO L226 Difference]: Without dead ends: 15 [2018-10-03 09:20:47,590 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 11 [2018-10-03 09:20:47,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-03 09:20:47,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-03 09:20:47,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-03 09:20:47,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-03 09:20:47,593 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-03 09:20:47,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:47,593 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-03 09:20:47,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-03 09:20:47,594 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-03 09:20:47,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-03 09:20:47,594 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:47,594 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-10-03 09:20:47,595 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:47,595 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:47,595 INFO L82 PathProgramCache]: Analyzing trace with hash 581150662, now seen corresponding path program 11 times [2018-10-03 09:20:47,595 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:47,595 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:47,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:47,596 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:47,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:47,941 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:47,941 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:47,941 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:20:47,949 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:20:47,962 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-03 09:20:47,962 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:47,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:48,075 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:48,097 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:48,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-03 09:20:48,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-03 09:20:48,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-03 09:20:48,098 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:48,098 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-10-03 09:20:48,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:48,138 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-03 09:20:48,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-03 09:20:48,138 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-10-03 09:20:48,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:48,139 INFO L225 Difference]: With dead ends: 18 [2018-10-03 09:20:48,139 INFO L226 Difference]: Without dead ends: 16 [2018-10-03 09:20:48,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 12 [2018-10-03 09:20:48,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-03 09:20:48,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-03 09:20:48,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-03 09:20:48,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-03 09:20:48,143 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-03 09:20:48,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:48,143 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-03 09:20:48,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-03 09:20:48,143 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-03 09:20:48,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-03 09:20:48,144 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:48,144 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-10-03 09:20:48,144 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:48,144 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:48,144 INFO L82 PathProgramCache]: Analyzing trace with hash 835797472, now seen corresponding path program 12 times [2018-10-03 09:20:48,145 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:48,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:48,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:48,146 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:48,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:48,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:48,290 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:20:48,298 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:20:48,315 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-03 09:20:48,315 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:48,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:48,354 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:48,379 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:48,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-03 09:20:48,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-03 09:20:48,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-03 09:20:48,380 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:48,380 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-10-03 09:20:48,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:48,417 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-03 09:20:48,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-03 09:20:48,417 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-10-03 09:20:48,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:48,418 INFO L225 Difference]: With dead ends: 19 [2018-10-03 09:20:48,418 INFO L226 Difference]: Without dead ends: 17 [2018-10-03 09:20:48,418 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 13 [2018-10-03 09:20:48,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-03 09:20:48,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-03 09:20:48,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-03 09:20:48,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-03 09:20:48,422 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-03 09:20:48,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:48,423 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-03 09:20:48,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-03 09:20:48,423 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-03 09:20:48,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-03 09:20:48,424 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:48,424 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-10-03 09:20:48,424 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:48,424 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:48,424 INFO L82 PathProgramCache]: Analyzing trace with hash 139913990, now seen corresponding path program 13 times [2018-10-03 09:20:48,425 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:48,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:48,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:48,425 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:48,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:48,634 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:48,634 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:48,634 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:20:48,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:20:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:48,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:48,731 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:48,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-03 09:20:48,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-03 09:20:48,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-03 09:20:48,732 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:48,732 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-10-03 09:20:48,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:48,932 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-03 09:20:48,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-03 09:20:48,934 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-10-03 09:20:48,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:48,935 INFO L225 Difference]: With dead ends: 20 [2018-10-03 09:20:48,935 INFO L226 Difference]: Without dead ends: 18 [2018-10-03 09:20:48,935 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 14 [2018-10-03 09:20:48,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-03 09:20:48,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-03 09:20:48,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-03 09:20:48,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-03 09:20:48,939 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-03 09:20:48,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:48,939 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-03 09:20:48,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-03 09:20:48,939 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-03 09:20:48,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-03 09:20:48,940 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:48,940 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-10-03 09:20:48,940 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:48,940 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:48,940 INFO L82 PathProgramCache]: Analyzing trace with hash 42362528, now seen corresponding path program 14 times [2018-10-03 09:20:48,940 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:48,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:48,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:48,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:20:48,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:49,215 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:49,216 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:49,216 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 09:20:49,224 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:20:49,251 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:20:49,252 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:49,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:49,319 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:49,340 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:49,340 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-03 09:20:49,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-03 09:20:49,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-03 09:20:49,341 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:49,341 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-10-03 09:20:49,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:49,388 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-03 09:20:49,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-03 09:20:49,389 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-10-03 09:20:49,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:49,389 INFO L225 Difference]: With dead ends: 21 [2018-10-03 09:20:49,389 INFO L226 Difference]: Without dead ends: 19 [2018-10-03 09:20:49,390 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 15 [2018-10-03 09:20:49,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-03 09:20:49,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-03 09:20:49,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-03 09:20:49,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-03 09:20:49,393 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-03 09:20:49,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:49,394 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-03 09:20:49,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-03 09:20:49,394 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-03 09:20:49,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-03 09:20:49,394 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:49,395 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-10-03 09:20:49,395 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:49,395 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:49,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1313234502, now seen corresponding path program 15 times [2018-10-03 09:20:49,395 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:49,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:49,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:49,397 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:49,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:49,634 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:49,634 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:49,635 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 09:20:49,644 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:20:49,685 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-03 09:20:49,685 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:49,687 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:49,800 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:49,822 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:49,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-03 09:20:49,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-03 09:20:49,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-03 09:20:49,823 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:49,823 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-10-03 09:20:49,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:49,856 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-03 09:20:49,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-03 09:20:49,859 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-10-03 09:20:49,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:49,860 INFO L225 Difference]: With dead ends: 22 [2018-10-03 09:20:49,860 INFO L226 Difference]: Without dead ends: 20 [2018-10-03 09:20:49,860 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 16 [2018-10-03 09:20:49,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-03 09:20:49,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-03 09:20:49,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-03 09:20:49,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-03 09:20:49,864 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-03 09:20:49,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:49,864 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-03 09:20:49,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-03 09:20:49,864 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-03 09:20:49,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-03 09:20:49,865 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:49,865 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-10-03 09:20:49,865 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:49,865 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:49,865 INFO L82 PathProgramCache]: Analyzing trace with hash 2055560032, now seen corresponding path program 16 times [2018-10-03 09:20:49,865 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:49,866 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:49,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:49,866 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:49,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:50,281 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:50,282 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:50,282 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 09:20:50,291 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:20:50,324 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:20:50,324 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:50,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:50,491 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:50,511 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:50,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-03 09:20:50,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-03 09:20:50,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-03 09:20:50,512 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:50,512 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-10-03 09:20:50,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:50,583 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-03 09:20:50,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-03 09:20:50,584 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-10-03 09:20:50,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:50,585 INFO L225 Difference]: With dead ends: 23 [2018-10-03 09:20:50,585 INFO L226 Difference]: Without dead ends: 21 [2018-10-03 09:20:50,585 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 17 [2018-10-03 09:20:50,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-03 09:20:50,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-03 09:20:50,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-03 09:20:50,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-03 09:20:50,588 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-10-03 09:20:50,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:50,588 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-03 09:20:50,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-03 09:20:50,589 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-03 09:20:50,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-03 09:20:50,589 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:50,589 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-10-03 09:20:50,590 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:50,590 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:50,590 INFO L82 PathProgramCache]: Analyzing trace with hash -702152314, now seen corresponding path program 17 times [2018-10-03 09:20:50,590 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:50,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:50,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:50,591 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:50,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:50,887 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:50,887 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:50,887 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:20:50,896 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:20:50,934 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-03 09:20:50,934 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:50,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:50,997 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:51,017 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:51,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-03 09:20:51,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-03 09:20:51,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-03 09:20:51,018 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:51,018 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-10-03 09:20:51,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:51,072 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-03 09:20:51,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-03 09:20:51,073 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-10-03 09:20:51,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:51,074 INFO L225 Difference]: With dead ends: 24 [2018-10-03 09:20:51,074 INFO L226 Difference]: Without dead ends: 22 [2018-10-03 09:20:51,074 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 18 [2018-10-03 09:20:51,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-03 09:20:51,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-03 09:20:51,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-03 09:20:51,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-03 09:20:51,078 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-10-03 09:20:51,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:51,079 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-03 09:20:51,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-03 09:20:51,079 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-03 09:20:51,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-03 09:20:51,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:51,080 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-10-03 09:20:51,080 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:51,080 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:51,080 INFO L82 PathProgramCache]: Analyzing trace with hash -291889120, now seen corresponding path program 18 times [2018-10-03 09:20:51,081 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:51,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:51,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:51,082 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:51,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:51,272 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:51,272 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:51,273 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 09:20:51,283 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:20:51,298 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-03 09:20:51,298 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:51,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:51,480 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:51,509 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:51,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-03 09:20:51,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-03 09:20:51,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-03 09:20:51,511 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:51,511 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-10-03 09:20:51,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:51,549 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-03 09:20:51,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-03 09:20:51,550 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-10-03 09:20:51,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:51,551 INFO L225 Difference]: With dead ends: 25 [2018-10-03 09:20:51,551 INFO L226 Difference]: Without dead ends: 23 [2018-10-03 09:20:51,551 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 19 [2018-10-03 09:20:51,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-03 09:20:51,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-03 09:20:51,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-03 09:20:51,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-03 09:20:51,555 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-10-03 09:20:51,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:51,556 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-03 09:20:51,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-03 09:20:51,556 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-03 09:20:51,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-03 09:20:51,557 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:51,557 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-10-03 09:20:51,557 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:51,557 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:51,557 INFO L82 PathProgramCache]: Analyzing trace with hash -458631994, now seen corresponding path program 19 times [2018-10-03 09:20:51,557 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:51,558 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:51,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:51,558 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:51,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:51,822 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:51,823 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:51,823 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 09:20:51,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:20:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:51,863 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:51,915 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:51,944 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:51,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-03 09:20:51,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-03 09:20:51,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-03 09:20:51,945 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:51,946 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-10-03 09:20:52,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:52,059 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-03 09:20:52,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-03 09:20:52,060 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-10-03 09:20:52,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:52,060 INFO L225 Difference]: With dead ends: 26 [2018-10-03 09:20:52,061 INFO L226 Difference]: Without dead ends: 24 [2018-10-03 09:20:52,061 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 20 [2018-10-03 09:20:52,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-03 09:20:52,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-03 09:20:52,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-03 09:20:52,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-03 09:20:52,065 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-10-03 09:20:52,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:52,065 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-03 09:20:52,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-03 09:20:52,065 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-03 09:20:52,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-03 09:20:52,066 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:52,066 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-10-03 09:20:52,066 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:52,066 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:52,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1332693792, now seen corresponding path program 20 times [2018-10-03 09:20:52,067 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:52,067 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:52,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:52,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:20:52,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:52,773 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:52,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:52,774 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:20:52,782 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:20:52,799 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:20:52,800 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:52,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:53,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:53,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-03 09:20:53,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-03 09:20:53,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-03 09:20:53,085 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:53,085 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-10-03 09:20:53,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:53,125 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-03 09:20:53,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-03 09:20:53,130 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-10-03 09:20:53,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:53,130 INFO L225 Difference]: With dead ends: 27 [2018-10-03 09:20:53,130 INFO L226 Difference]: Without dead ends: 25 [2018-10-03 09:20:53,131 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.5s impTime 21 [2018-10-03 09:20:53,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-03 09:20:53,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-03 09:20:53,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-03 09:20:53,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-03 09:20:53,134 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-10-03 09:20:53,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:53,134 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-03 09:20:53,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-03 09:20:53,134 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-03 09:20:53,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-03 09:20:53,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:53,135 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-10-03 09:20:53,136 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:53,136 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:53,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1636161542, now seen corresponding path program 21 times [2018-10-03 09:20:53,136 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:53,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:53,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:53,137 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:53,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:53,655 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:53,656 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:53,656 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:20:53,665 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:20:53,682 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-03 09:20:53,683 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:53,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:53,922 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:53,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:53,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-03 09:20:53,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-03 09:20:53,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-03 09:20:53,961 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:53,961 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-10-03 09:20:54,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:54,162 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-03 09:20:54,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-03 09:20:54,164 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-10-03 09:20:54,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:54,164 INFO L225 Difference]: With dead ends: 28 [2018-10-03 09:20:54,164 INFO L226 Difference]: Without dead ends: 26 [2018-10-03 09:20:54,165 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.3s impTime 22 [2018-10-03 09:20:54,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-03 09:20:54,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-03 09:20:54,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-03 09:20:54,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-03 09:20:54,168 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-10-03 09:20:54,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:54,169 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-03 09:20:54,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-03 09:20:54,169 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-03 09:20:54,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-03 09:20:54,169 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:54,170 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-10-03 09:20:54,170 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:54,170 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:54,170 INFO L82 PathProgramCache]: Analyzing trace with hash -818603616, now seen corresponding path program 22 times [2018-10-03 09:20:54,170 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:54,170 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:54,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:54,171 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:54,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:54,398 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:54,398 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:54,398 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:20:54,407 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:20:54,421 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:20:54,422 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:54,423 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:54,508 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:54,539 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:54,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-03 09:20:54,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-03 09:20:54,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-03 09:20:54,540 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:54,540 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-10-03 09:20:54,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:54,632 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-03 09:20:54,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-03 09:20:54,633 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-10-03 09:20:54,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:54,634 INFO L225 Difference]: With dead ends: 29 [2018-10-03 09:20:54,634 INFO L226 Difference]: Without dead ends: 27 [2018-10-03 09:20:54,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 23 [2018-10-03 09:20:54,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-03 09:20:54,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-03 09:20:54,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-03 09:20:54,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-03 09:20:54,639 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-10-03 09:20:54,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:54,639 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-03 09:20:54,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-03 09:20:54,639 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-03 09:20:54,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-03 09:20:54,640 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:54,640 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-10-03 09:20:54,640 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:54,640 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:54,640 INFO L82 PathProgramCache]: Analyzing trace with hash 393087814, now seen corresponding path program 23 times [2018-10-03 09:20:54,640 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:54,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:54,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:54,641 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:54,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:54,915 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:54,915 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:54,916 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:20:54,924 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:20:54,947 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-03 09:20:54,947 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:54,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:55,018 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:55,039 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:55,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-03 09:20:55,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-03 09:20:55,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-03 09:20:55,040 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:55,040 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-10-03 09:20:55,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:55,106 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-03 09:20:55,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-03 09:20:55,112 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-10-03 09:20:55,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:55,112 INFO L225 Difference]: With dead ends: 30 [2018-10-03 09:20:55,112 INFO L226 Difference]: Without dead ends: 28 [2018-10-03 09:20:55,113 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 24 [2018-10-03 09:20:55,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-03 09:20:55,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-03 09:20:55,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-03 09:20:55,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-03 09:20:55,116 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-10-03 09:20:55,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:55,116 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-03 09:20:55,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-03 09:20:55,116 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-03 09:20:55,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-03 09:20:55,117 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:55,117 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-10-03 09:20:55,117 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:55,117 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:55,117 INFO L82 PathProgramCache]: Analyzing trace with hash -699183520, now seen corresponding path program 24 times [2018-10-03 09:20:55,117 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:55,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:55,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:55,118 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:55,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:55,404 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:55,404 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 09:20:55,411 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:20:55,435 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-03 09:20:55,435 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:55,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:55,548 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:55,569 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:55,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-03 09:20:55,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-03 09:20:55,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-03 09:20:55,570 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:55,570 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-10-03 09:20:55,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:55,655 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-03 09:20:55,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-03 09:20:55,655 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-10-03 09:20:55,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:55,656 INFO L225 Difference]: With dead ends: 31 [2018-10-03 09:20:55,656 INFO L226 Difference]: Without dead ends: 29 [2018-10-03 09:20:55,657 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 25 [2018-10-03 09:20:55,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-03 09:20:55,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-03 09:20:55,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-03 09:20:55,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-03 09:20:55,661 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-10-03 09:20:55,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:55,662 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-03 09:20:55,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-03 09:20:55,662 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-03 09:20:55,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-03 09:20:55,663 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:55,663 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-10-03 09:20:55,663 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:55,663 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:55,663 INFO L82 PathProgramCache]: Analyzing trace with hash -199856506, now seen corresponding path program 25 times [2018-10-03 09:20:55,663 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:55,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:55,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:55,664 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:55,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:56,086 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:56,086 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:56,086 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 09:20:56,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:20:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:56,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:56,162 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:56,185 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:56,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-03 09:20:56,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-03 09:20:56,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-03 09:20:56,186 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:56,186 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-10-03 09:20:56,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:56,233 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-03 09:20:56,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-03 09:20:56,234 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-10-03 09:20:56,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:56,234 INFO L225 Difference]: With dead ends: 32 [2018-10-03 09:20:56,234 INFO L226 Difference]: Without dead ends: 30 [2018-10-03 09:20:56,235 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 26 [2018-10-03 09:20:56,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-03 09:20:56,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-03 09:20:56,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-03 09:20:56,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-03 09:20:56,238 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-03 09:20:56,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:56,238 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-03 09:20:56,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-03 09:20:56,239 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-03 09:20:56,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-03 09:20:56,239 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:56,239 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-10-03 09:20:56,239 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:56,240 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:56,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1900588256, now seen corresponding path program 26 times [2018-10-03 09:20:56,240 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:56,240 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:56,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:56,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:20:56,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:57,266 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:57,266 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:57,266 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 09:20:57,278 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:20:57,293 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:20:57,294 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:57,297 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:57,363 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:57,384 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:57,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-03 09:20:57,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-03 09:20:57,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-03 09:20:57,385 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:57,385 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-10-03 09:20:57,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:57,465 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-03 09:20:57,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-03 09:20:57,465 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-10-03 09:20:57,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:57,466 INFO L225 Difference]: With dead ends: 33 [2018-10-03 09:20:57,466 INFO L226 Difference]: Without dead ends: 31 [2018-10-03 09:20:57,466 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 27 [2018-10-03 09:20:57,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-03 09:20:57,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-03 09:20:57,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-03 09:20:57,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-03 09:20:57,470 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-10-03 09:20:57,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:57,470 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-03 09:20:57,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-03 09:20:57,471 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-03 09:20:57,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-03 09:20:57,471 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:57,471 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-10-03 09:20:57,472 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:57,472 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:57,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1211302342, now seen corresponding path program 27 times [2018-10-03 09:20:57,472 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:57,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:57,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:57,473 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:57,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:58,041 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:58,041 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 09:20:58,049 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:20:58,087 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-03 09:20:58,088 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:58,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:58,182 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:58,203 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:58,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-03 09:20:58,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-03 09:20:58,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-03 09:20:58,204 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:58,204 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-10-03 09:20:58,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:58,242 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-03 09:20:58,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-03 09:20:58,243 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-10-03 09:20:58,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:58,244 INFO L225 Difference]: With dead ends: 34 [2018-10-03 09:20:58,244 INFO L226 Difference]: Without dead ends: 32 [2018-10-03 09:20:58,244 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 28 [2018-10-03 09:20:58,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-03 09:20:58,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-03 09:20:58,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-03 09:20:58,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-03 09:20:58,248 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-10-03 09:20:58,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:58,248 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-03 09:20:58,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-03 09:20:58,249 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-03 09:20:58,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-03 09:20:58,249 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:58,249 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-10-03 09:20:58,250 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:58,250 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:58,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1104336928, now seen corresponding path program 28 times [2018-10-03 09:20:58,250 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:58,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:58,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:58,251 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:58,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:58,722 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:58,723 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:58,723 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 09:20:58,737 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:20:58,756 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:20:58,756 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:58,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:58,849 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:58,870 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:58,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-03 09:20:58,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-03 09:20:58,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-03 09:20:58,871 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:58,871 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-10-03 09:20:58,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:58,931 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-03 09:20:58,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-03 09:20:58,931 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-10-03 09:20:58,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:58,932 INFO L225 Difference]: With dead ends: 35 [2018-10-03 09:20:58,932 INFO L226 Difference]: Without dead ends: 33 [2018-10-03 09:20:58,932 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 29 [2018-10-03 09:20:58,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-03 09:20:58,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-03 09:20:58,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-03 09:20:58,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-03 09:20:58,937 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-10-03 09:20:58,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:58,937 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-03 09:20:58,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-03 09:20:58,937 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-03 09:20:58,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-03 09:20:58,938 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:58,938 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-10-03 09:20:58,938 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:58,938 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:58,939 INFO L82 PathProgramCache]: Analyzing trace with hash 125289734, now seen corresponding path program 29 times [2018-10-03 09:20:58,939 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:58,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:58,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:58,940 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:58,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:59,395 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:59,395 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:59,395 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 09:20:59,405 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:20:59,429 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-03 09:20:59,429 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:59,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:59,510 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:59,531 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:59,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-03 09:20:59,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-03 09:20:59,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-03 09:20:59,532 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:59,532 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-10-03 09:20:59,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:59,584 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-03 09:20:59,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-03 09:20:59,584 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-10-03 09:20:59,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:59,585 INFO L225 Difference]: With dead ends: 36 [2018-10-03 09:20:59,585 INFO L226 Difference]: Without dead ends: 34 [2018-10-03 09:20:59,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 30 [2018-10-03 09:20:59,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-03 09:20:59,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-03 09:20:59,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-03 09:20:59,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-03 09:20:59,589 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-10-03 09:20:59,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:59,589 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-03 09:20:59,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-03 09:20:59,590 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-03 09:20:59,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-03 09:20:59,590 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:59,590 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-10-03 09:20:59,590 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:59,591 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:59,591 INFO L82 PathProgramCache]: Analyzing trace with hash -410989408, now seen corresponding path program 30 times [2018-10-03 09:20:59,591 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:59,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:59,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:59,591 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:59,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:00,092 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:00,093 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:00,093 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:00,102 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:21:00,185 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-03 09:21:00,186 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:00,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:00,280 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:00,301 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:00,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-03 09:21:00,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-03 09:21:00,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-03 09:21:00,302 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:00,302 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-10-03 09:21:00,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:00,353 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-03 09:21:00,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-03 09:21:00,353 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-10-03 09:21:00,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:00,353 INFO L225 Difference]: With dead ends: 37 [2018-10-03 09:21:00,353 INFO L226 Difference]: Without dead ends: 35 [2018-10-03 09:21:00,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 31 [2018-10-03 09:21:00,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-03 09:21:00,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-03 09:21:00,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-03 09:21:00,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-03 09:21:00,356 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-10-03 09:21:00,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:00,356 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-03 09:21:00,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-03 09:21:00,357 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-03 09:21:00,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-03 09:21:00,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:00,358 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-10-03 09:21:00,358 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:00,358 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:00,358 INFO L82 PathProgramCache]: Analyzing trace with hash 144226374, now seen corresponding path program 31 times [2018-10-03 09:21:00,358 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:00,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:00,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:00,359 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:00,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:00,839 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:00,839 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 09:21:00,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:21:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:00,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:00,931 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:00,951 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:00,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-03 09:21:00,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-03 09:21:00,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-03 09:21:00,952 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:00,952 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-10-03 09:21:01,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:01,107 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-03 09:21:01,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-03 09:21:01,108 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-10-03 09:21:01,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:01,108 INFO L225 Difference]: With dead ends: 38 [2018-10-03 09:21:01,108 INFO L226 Difference]: Without dead ends: 36 [2018-10-03 09:21:01,109 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 32 [2018-10-03 09:21:01,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-03 09:21:01,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-03 09:21:01,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-03 09:21:01,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-03 09:21:01,112 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-10-03 09:21:01,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:01,112 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-03 09:21:01,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-03 09:21:01,112 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-03 09:21:01,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-03 09:21:01,113 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:01,113 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-10-03 09:21:01,113 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:01,113 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:01,114 INFO L82 PathProgramCache]: Analyzing trace with hash 176046432, now seen corresponding path program 32 times [2018-10-03 09:21:01,114 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:01,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:01,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:01,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:21:01,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:01,600 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:01,601 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:01,601 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:01,608 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:21:01,628 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:21:01,629 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:01,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:01,688 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:01,709 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:01,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-03 09:21:01,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-03 09:21:01,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-03 09:21:01,709 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:01,710 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-10-03 09:21:01,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:01,750 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-03 09:21:01,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-03 09:21:01,751 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-10-03 09:21:01,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:01,752 INFO L225 Difference]: With dead ends: 39 [2018-10-03 09:21:01,752 INFO L226 Difference]: Without dead ends: 37 [2018-10-03 09:21:01,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 33 [2018-10-03 09:21:01,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-03 09:21:01,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-03 09:21:01,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-03 09:21:01,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-03 09:21:01,756 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-10-03 09:21:01,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:01,756 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-03 09:21:01,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-03 09:21:01,756 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-03 09:21:01,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-03 09:21:01,757 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:01,757 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-10-03 09:21:01,757 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:01,757 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:01,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1162468230, now seen corresponding path program 33 times [2018-10-03 09:21:01,757 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:01,757 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:01,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:01,758 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:01,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:02,393 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:02,393 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:02,393 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:02,400 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:21:02,427 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-03 09:21:02,427 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:02,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:02,544 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:02,565 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:02,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-03 09:21:02,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-03 09:21:02,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-03 09:21:02,566 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:02,566 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-10-03 09:21:02,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:02,621 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-03 09:21:02,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-03 09:21:02,622 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-10-03 09:21:02,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:02,622 INFO L225 Difference]: With dead ends: 40 [2018-10-03 09:21:02,623 INFO L226 Difference]: Without dead ends: 38 [2018-10-03 09:21:02,623 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 34 [2018-10-03 09:21:02,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-03 09:21:02,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-03 09:21:02,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-03 09:21:02,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-03 09:21:02,626 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-10-03 09:21:02,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:02,626 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-03 09:21:02,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-03 09:21:02,626 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-03 09:21:02,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-03 09:21:02,627 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:02,627 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-10-03 09:21:02,627 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:02,627 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:02,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1676772896, now seen corresponding path program 34 times [2018-10-03 09:21:02,627 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:02,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:02,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:02,628 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:02,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:03,114 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:03,114 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:03,114 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 09:21:03,122 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:21:03,162 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:21:03,162 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:03,164 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:03,375 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:03,395 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:03,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-03 09:21:03,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-03 09:21:03,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-03 09:21:03,396 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:03,396 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-10-03 09:21:03,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:03,442 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-03 09:21:03,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-03 09:21:03,442 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-10-03 09:21:03,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:03,443 INFO L225 Difference]: With dead ends: 41 [2018-10-03 09:21:03,443 INFO L226 Difference]: Without dead ends: 39 [2018-10-03 09:21:03,443 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 35 [2018-10-03 09:21:03,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-03 09:21:03,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-03 09:21:03,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-03 09:21:03,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-03 09:21:03,447 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-10-03 09:21:03,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:03,447 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-03 09:21:03,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-03 09:21:03,448 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-03 09:21:03,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-03 09:21:03,448 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:03,448 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-10-03 09:21:03,448 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:03,449 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:03,449 INFO L82 PathProgramCache]: Analyzing trace with hash 440348358, now seen corresponding path program 35 times [2018-10-03 09:21:03,449 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:03,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:03,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:03,450 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:03,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:04,184 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:04,184 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:04,184 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 09:21:04,191 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:21:04,220 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-03 09:21:04,220 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:04,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:04,347 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:04,367 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:04,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-03 09:21:04,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-03 09:21:04,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-03 09:21:04,368 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:04,368 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-10-03 09:21:04,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:04,445 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-03 09:21:04,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-03 09:21:04,446 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-10-03 09:21:04,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:04,447 INFO L225 Difference]: With dead ends: 42 [2018-10-03 09:21:04,447 INFO L226 Difference]: Without dead ends: 40 [2018-10-03 09:21:04,447 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 36 [2018-10-03 09:21:04,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-03 09:21:04,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-03 09:21:04,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-03 09:21:04,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-03 09:21:04,450 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-10-03 09:21:04,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:04,450 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-03 09:21:04,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-03 09:21:04,450 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-03 09:21:04,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-03 09:21:04,450 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:04,450 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-10-03 09:21:04,451 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:04,451 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:04,451 INFO L82 PathProgramCache]: Analyzing trace with hash 765893344, now seen corresponding path program 36 times [2018-10-03 09:21:04,451 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:04,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:04,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:04,452 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:04,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:05,115 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:05,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:05,116 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 09:21:05,123 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:21:05,152 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-03 09:21:05,152 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:05,154 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:06,078 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:06,115 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:06,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-03 09:21:06,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-03 09:21:06,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-03 09:21:06,116 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:06,116 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-10-03 09:21:06,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:06,323 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-03 09:21:06,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-03 09:21:06,323 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-10-03 09:21:06,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:06,324 INFO L225 Difference]: With dead ends: 43 [2018-10-03 09:21:06,324 INFO L226 Difference]: Without dead ends: 41 [2018-10-03 09:21:06,325 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 0.5s impTime 37 [2018-10-03 09:21:06,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-03 09:21:06,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-03 09:21:06,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-03 09:21:06,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-03 09:21:06,327 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-10-03 09:21:06,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:06,327 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-03 09:21:06,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-03 09:21:06,327 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-03 09:21:06,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-03 09:21:06,328 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:06,328 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-10-03 09:21:06,328 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:06,328 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:06,328 INFO L82 PathProgramCache]: Analyzing trace with hash -2027113978, now seen corresponding path program 37 times [2018-10-03 09:21:06,328 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:06,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:06,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:06,329 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:06,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:07,057 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:07,058 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:07,058 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:07,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:21:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:07,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:07,209 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:07,229 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:07,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-03 09:21:07,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-03 09:21:07,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-03 09:21:07,230 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:07,230 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-10-03 09:21:07,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:07,336 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-03 09:21:07,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-03 09:21:07,338 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-10-03 09:21:07,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:07,339 INFO L225 Difference]: With dead ends: 44 [2018-10-03 09:21:07,339 INFO L226 Difference]: Without dead ends: 42 [2018-10-03 09:21:07,339 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 38 [2018-10-03 09:21:07,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-03 09:21:07,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-03 09:21:07,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-03 09:21:07,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-03 09:21:07,342 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-10-03 09:21:07,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:07,342 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-03 09:21:07,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-03 09:21:07,342 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-03 09:21:07,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-03 09:21:07,343 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:07,343 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-10-03 09:21:07,343 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:07,343 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:07,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1583972256, now seen corresponding path program 38 times [2018-10-03 09:21:07,344 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:07,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:07,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:07,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:21:07,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:08,405 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:08,405 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:08,413 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:21:08,437 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:21:08,437 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:08,438 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:08,525 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:08,546 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:08,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-03 09:21:08,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-03 09:21:08,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-03 09:21:08,547 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:08,547 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-10-03 09:21:08,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:08,638 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-03 09:21:08,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-03 09:21:08,639 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-10-03 09:21:08,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:08,640 INFO L225 Difference]: With dead ends: 45 [2018-10-03 09:21:08,640 INFO L226 Difference]: Without dead ends: 43 [2018-10-03 09:21:08,640 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 39 [2018-10-03 09:21:08,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-03 09:21:08,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-03 09:21:08,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-03 09:21:08,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-03 09:21:08,644 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-10-03 09:21:08,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:08,644 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-03 09:21:08,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-03 09:21:08,644 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-03 09:21:08,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-03 09:21:08,645 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:08,645 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-10-03 09:21:08,645 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:08,645 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:08,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1858495814, now seen corresponding path program 39 times [2018-10-03 09:21:08,645 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:08,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:08,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:08,646 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:08,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:09,411 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:09,411 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 09:21:09,418 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:21:09,449 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-03 09:21:09,450 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:09,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:09,531 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:09,552 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:09,552 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-03 09:21:09,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-03 09:21:09,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-03 09:21:09,553 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:09,553 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-10-03 09:21:09,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:09,619 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-03 09:21:09,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-03 09:21:09,619 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-10-03 09:21:09,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:09,620 INFO L225 Difference]: With dead ends: 46 [2018-10-03 09:21:09,620 INFO L226 Difference]: Without dead ends: 44 [2018-10-03 09:21:09,621 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 40 [2018-10-03 09:21:09,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-03 09:21:09,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-03 09:21:09,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-03 09:21:09,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-03 09:21:09,623 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-10-03 09:21:09,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:09,623 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-03 09:21:09,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-03 09:21:09,624 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-03 09:21:09,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-03 09:21:09,624 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:09,624 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-10-03 09:21:09,624 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:09,624 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:09,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1778791520, now seen corresponding path program 40 times [2018-10-03 09:21:09,624 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:09,624 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:09,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:09,625 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:09,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:11,009 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:11,010 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:11,010 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:11,017 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:21:11,044 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:21:11,044 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:11,045 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:11,132 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:11,152 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:11,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-03 09:21:11,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-03 09:21:11,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-03 09:21:11,153 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:11,153 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-10-03 09:21:11,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:11,224 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-03 09:21:11,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-03 09:21:11,224 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-10-03 09:21:11,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:11,225 INFO L225 Difference]: With dead ends: 47 [2018-10-03 09:21:11,225 INFO L226 Difference]: Without dead ends: 45 [2018-10-03 09:21:11,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 41 [2018-10-03 09:21:11,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-03 09:21:11,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-03 09:21:11,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-03 09:21:11,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-03 09:21:11,227 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-10-03 09:21:11,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:11,227 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-03 09:21:11,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-03 09:21:11,227 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-03 09:21:11,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-03 09:21:11,228 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:11,228 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-10-03 09:21:11,228 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:11,228 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:11,228 INFO L82 PathProgramCache]: Analyzing trace with hash -692041594, now seen corresponding path program 41 times [2018-10-03 09:21:11,228 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:11,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:11,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:11,229 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:11,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:12,231 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:12,231 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:12,232 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:12,239 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:21:12,272 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-03 09:21:12,272 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:12,274 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:12,380 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:12,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-03 09:21:12,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-03 09:21:12,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-03 09:21:12,381 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:12,381 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-10-03 09:21:12,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:12,531 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-10-03 09:21:12,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-03 09:21:12,531 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-10-03 09:21:12,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:12,532 INFO L225 Difference]: With dead ends: 48 [2018-10-03 09:21:12,532 INFO L226 Difference]: Without dead ends: 46 [2018-10-03 09:21:12,533 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime 42 [2018-10-03 09:21:12,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-03 09:21:12,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-03 09:21:12,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-03 09:21:12,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-03 09:21:12,535 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-10-03 09:21:12,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:12,536 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-03 09:21:12,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-03 09:21:12,536 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-03 09:21:12,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-03 09:21:12,536 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:12,536 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-10-03 09:21:12,537 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:12,537 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:12,537 INFO L82 PathProgramCache]: Analyzing trace with hash 21543200, now seen corresponding path program 42 times [2018-10-03 09:21:12,537 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:12,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:12,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:12,538 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:12,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:13,983 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:13,984 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:13,984 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:13,991 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:21:14,027 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-03 09:21:14,028 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:14,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:14,144 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:14,164 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:14,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-03 09:21:14,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-03 09:21:14,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-03 09:21:14,165 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:14,166 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-10-03 09:21:14,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:14,244 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-03 09:21:14,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-03 09:21:14,245 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-10-03 09:21:14,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:14,245 INFO L225 Difference]: With dead ends: 49 [2018-10-03 09:21:14,246 INFO L226 Difference]: Without dead ends: 47 [2018-10-03 09:21:14,246 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.2s impTime 43 [2018-10-03 09:21:14,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-03 09:21:14,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-03 09:21:14,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-03 09:21:14,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-03 09:21:14,249 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-10-03 09:21:14,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:14,249 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-03 09:21:14,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-03 09:21:14,249 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-03 09:21:14,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-03 09:21:14,250 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:14,250 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-10-03 09:21:14,250 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:14,250 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:14,250 INFO L82 PathProgramCache]: Analyzing trace with hash 667835334, now seen corresponding path program 43 times [2018-10-03 09:21:14,250 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:14,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:14,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:14,251 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:14,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:15,319 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:15,320 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:15,320 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 09:21:15,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:21:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:15,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:15,443 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:15,464 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:15,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-03 09:21:15,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-03 09:21:15,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-03 09:21:15,465 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:15,465 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-10-03 09:21:15,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:15,594 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-03 09:21:15,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-03 09:21:15,595 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-10-03 09:21:15,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:15,595 INFO L225 Difference]: With dead ends: 50 [2018-10-03 09:21:15,595 INFO L226 Difference]: Without dead ends: 48 [2018-10-03 09:21:15,596 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.9s impTime 44 [2018-10-03 09:21:15,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-03 09:21:15,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-03 09:21:15,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-03 09:21:15,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-03 09:21:15,599 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-10-03 09:21:15,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:15,599 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-03 09:21:15,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-03 09:21:15,600 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-03 09:21:15,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-03 09:21:15,600 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:15,600 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-10-03 09:21:15,600 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:15,600 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:15,601 INFO L82 PathProgramCache]: Analyzing trace with hash -771944992, now seen corresponding path program 44 times [2018-10-03 09:21:15,601 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:15,601 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:15,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:15,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:21:15,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:16,543 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:16,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:16,544 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:16,552 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:21:16,579 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:21:16,579 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:16,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:16,656 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:16,677 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:16,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-03 09:21:16,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-03 09:21:16,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-03 09:21:16,677 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:16,677 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-10-03 09:21:16,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:16,754 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-03 09:21:16,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-03 09:21:16,755 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-10-03 09:21:16,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:16,755 INFO L225 Difference]: With dead ends: 51 [2018-10-03 09:21:16,756 INFO L226 Difference]: Without dead ends: 49 [2018-10-03 09:21:16,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.8s impTime 45 [2018-10-03 09:21:16,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-03 09:21:16,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-03 09:21:16,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-03 09:21:16,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-03 09:21:16,759 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-10-03 09:21:16,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:16,760 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-03 09:21:16,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-03 09:21:16,760 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-03 09:21:16,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-03 09:21:16,760 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:16,761 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-10-03 09:21:16,761 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:16,761 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:16,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1839505158, now seen corresponding path program 45 times [2018-10-03 09:21:16,761 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:16,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:16,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:16,762 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:16,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:17,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:17,445 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:17,445 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 09:21:17,453 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:21:17,490 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-03 09:21:17,490 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:17,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:17,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:17,618 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:17,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-03 09:21:17,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-03 09:21:17,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-03 09:21:17,618 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:17,619 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-10-03 09:21:18,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:18,055 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-03 09:21:18,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-03 09:21:18,055 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-10-03 09:21:18,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:18,056 INFO L225 Difference]: With dead ends: 52 [2018-10-03 09:21:18,056 INFO L226 Difference]: Without dead ends: 50 [2018-10-03 09:21:18,056 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 46 [2018-10-03 09:21:18,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-03 09:21:18,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-03 09:21:18,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-03 09:21:18,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-03 09:21:18,059 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-10-03 09:21:18,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:18,059 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-03 09:21:18,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-03 09:21:18,059 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-03 09:21:18,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-03 09:21:18,060 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:18,060 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-10-03 09:21:18,060 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:18,060 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:18,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1190081184, now seen corresponding path program 46 times [2018-10-03 09:21:18,060 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:18,060 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:18,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:18,061 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:18,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:19,350 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:19,350 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:19,360 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:21:19,390 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:21:19,391 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:19,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:19,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:19,527 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:19,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-03 09:21:19,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-03 09:21:19,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-03 09:21:19,528 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:19,528 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-10-03 09:21:19,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:19,609 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-03 09:21:19,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-03 09:21:19,610 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-10-03 09:21:19,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:19,611 INFO L225 Difference]: With dead ends: 53 [2018-10-03 09:21:19,611 INFO L226 Difference]: Without dead ends: 51 [2018-10-03 09:21:19,611 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime 47 [2018-10-03 09:21:19,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-03 09:21:19,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-03 09:21:19,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-03 09:21:19,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-03 09:21:19,613 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-10-03 09:21:19,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:19,613 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-03 09:21:19,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-03 09:21:19,613 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-03 09:21:19,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-03 09:21:19,613 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:19,614 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-10-03 09:21:19,614 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:19,614 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:19,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1762192826, now seen corresponding path program 47 times [2018-10-03 09:21:19,614 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:19,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:19,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:19,615 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:19,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:20,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:20,470 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:20,470 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:20,477 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:21:20,519 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-03 09:21:20,519 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:20,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:20,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:20,662 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:20,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-03 09:21:20,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-03 09:21:20,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-03 09:21:20,663 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:20,663 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-10-03 09:21:20,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:20,729 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-03 09:21:20,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-03 09:21:20,735 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-10-03 09:21:20,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:20,735 INFO L225 Difference]: With dead ends: 54 [2018-10-03 09:21:20,735 INFO L226 Difference]: Without dead ends: 52 [2018-10-03 09:21:20,736 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 48 [2018-10-03 09:21:20,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-03 09:21:20,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-03 09:21:20,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-03 09:21:20,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-03 09:21:20,740 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-10-03 09:21:20,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:20,740 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-03 09:21:20,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-03 09:21:20,740 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-03 09:21:20,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-03 09:21:20,740 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:20,741 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-10-03 09:21:20,741 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:20,741 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:20,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1206593376, now seen corresponding path program 48 times [2018-10-03 09:21:20,741 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:20,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:20,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:20,743 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:20,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:21,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:21,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:21,543 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 09:21:21,550 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:21:21,644 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-03 09:21:21,645 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:21,647 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:21,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:21,756 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:21,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-03 09:21:21,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-03 09:21:21,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-03 09:21:21,757 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:21,757 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-10-03 09:21:21,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:21,820 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-03 09:21:21,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-03 09:21:21,821 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-10-03 09:21:21,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:21,822 INFO L225 Difference]: With dead ends: 55 [2018-10-03 09:21:21,822 INFO L226 Difference]: Without dead ends: 53 [2018-10-03 09:21:21,822 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 49 [2018-10-03 09:21:21,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-03 09:21:21,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-03 09:21:21,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-03 09:21:21,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-03 09:21:21,827 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-10-03 09:21:21,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:21,827 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-03 09:21:21,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-03 09:21:21,827 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-03 09:21:21,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-03 09:21:21,828 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:21,828 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-10-03 09:21:21,828 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:21,828 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:21,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1250314874, now seen corresponding path program 49 times [2018-10-03 09:21:21,828 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:21,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:21,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:21,829 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:21,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:23,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:23,615 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:23,615 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:23,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:21:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:23,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:23,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:23,813 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:23,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-03 09:21:23,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-03 09:21:23,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-03 09:21:23,813 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:23,814 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-10-03 09:21:23,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:23,878 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-10-03 09:21:23,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-03 09:21:23,878 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-10-03 09:21:23,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:23,879 INFO L225 Difference]: With dead ends: 56 [2018-10-03 09:21:23,879 INFO L226 Difference]: Without dead ends: 54 [2018-10-03 09:21:23,880 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime 50 [2018-10-03 09:21:23,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-03 09:21:23,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-03 09:21:23,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-03 09:21:23,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-03 09:21:23,882 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-10-03 09:21:23,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:23,882 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-03 09:21:23,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-03 09:21:23,882 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-03 09:21:23,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-03 09:21:23,882 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:23,882 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-10-03 09:21:23,883 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:23,883 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:23,883 INFO L82 PathProgramCache]: Analyzing trace with hash -105059296, now seen corresponding path program 50 times [2018-10-03 09:21:23,883 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:23,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:23,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:23,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:21:23,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:24,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:24,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:24,799 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:24,807 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:21:24,837 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:21:24,838 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:24,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:24,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:24,964 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:24,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-03 09:21:24,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-03 09:21:24,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-03 09:21:24,965 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:24,965 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-10-03 09:21:25,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:25,055 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-03 09:21:25,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-03 09:21:25,056 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-10-03 09:21:25,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:25,057 INFO L225 Difference]: With dead ends: 57 [2018-10-03 09:21:25,057 INFO L226 Difference]: Without dead ends: 55 [2018-10-03 09:21:25,057 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime 51 [2018-10-03 09:21:25,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-03 09:21:25,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-03 09:21:25,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-03 09:21:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-03 09:21:25,059 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-10-03 09:21:25,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:25,060 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-03 09:21:25,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-03 09:21:25,060 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-03 09:21:25,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-03 09:21:25,060 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:25,060 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-10-03 09:21:25,060 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:25,061 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:25,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1038125254, now seen corresponding path program 51 times [2018-10-03 09:21:25,061 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:25,061 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:25,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:25,062 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:25,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:25,824 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:25,824 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 09:21:25,832 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:21:26,022 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-03 09:21:26,022 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:26,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:26,338 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:26,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-03 09:21:26,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-03 09:21:26,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-03 09:21:26,339 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:26,339 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-10-03 09:21:26,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:26,413 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-03 09:21:26,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-03 09:21:26,414 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-10-03 09:21:26,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:26,415 INFO L225 Difference]: With dead ends: 58 [2018-10-03 09:21:26,415 INFO L226 Difference]: Without dead ends: 56 [2018-10-03 09:21:26,415 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime 52 [2018-10-03 09:21:26,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-03 09:21:26,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-03 09:21:26,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-03 09:21:26,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-03 09:21:26,417 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-10-03 09:21:26,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:26,418 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-03 09:21:26,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-03 09:21:26,418 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-03 09:21:26,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-03 09:21:26,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:26,418 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-10-03 09:21:26,419 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:26,419 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:26,419 INFO L82 PathProgramCache]: Analyzing trace with hash 2117107936, now seen corresponding path program 52 times [2018-10-03 09:21:26,419 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:26,419 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:26,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:26,420 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:26,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:27,876 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:27,877 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 09:21:27,884 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:21:27,917 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:21:27,917 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:27,919 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:28,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:28,071 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:28,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-03 09:21:28,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-03 09:21:28,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-03 09:21:28,072 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:28,072 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-10-03 09:21:28,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:28,164 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-03 09:21:28,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-03 09:21:28,164 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-10-03 09:21:28,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:28,165 INFO L225 Difference]: With dead ends: 59 [2018-10-03 09:21:28,165 INFO L226 Difference]: Without dead ends: 57 [2018-10-03 09:21:28,166 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.2s impTime 53 [2018-10-03 09:21:28,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-03 09:21:28,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-03 09:21:28,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-03 09:21:28,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-03 09:21:28,167 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-10-03 09:21:28,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:28,168 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-03 09:21:28,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-03 09:21:28,168 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-03 09:21:28,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-03 09:21:28,168 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:28,168 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-10-03 09:21:28,169 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:28,169 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:28,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1205832710, now seen corresponding path program 53 times [2018-10-03 09:21:28,169 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:28,169 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:28,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:28,169 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:28,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:29,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:29,351 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:29,352 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 09:21:29,359 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:21:29,400 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-03 09:21:29,401 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:29,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:29,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:29,564 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:29,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-03 09:21:29,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-03 09:21:29,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-03 09:21:29,565 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:29,565 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-10-03 09:21:29,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:29,656 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-10-03 09:21:29,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-03 09:21:29,656 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-10-03 09:21:29,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:29,657 INFO L225 Difference]: With dead ends: 60 [2018-10-03 09:21:29,657 INFO L226 Difference]: Without dead ends: 58 [2018-10-03 09:21:29,657 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 1.0s impTime 54 [2018-10-03 09:21:29,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-03 09:21:29,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-03 09:21:29,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-03 09:21:29,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-03 09:21:29,659 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-10-03 09:21:29,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:29,660 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-03 09:21:29,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-03 09:21:29,660 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-03 09:21:29,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-03 09:21:29,660 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:29,660 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-10-03 09:21:29,660 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:29,661 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:29,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1273895520, now seen corresponding path program 54 times [2018-10-03 09:21:29,661 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:29,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:29,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:29,661 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:29,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:30,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:30,593 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:30,593 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:30,600 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:21:30,644 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-03 09:21:30,644 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:30,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:30,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:30,857 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:30,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-03 09:21:30,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-03 09:21:30,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-03 09:21:30,858 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:30,858 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-10-03 09:21:30,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:30,931 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-03 09:21:30,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-03 09:21:30,932 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-10-03 09:21:30,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:30,933 INFO L225 Difference]: With dead ends: 61 [2018-10-03 09:21:30,933 INFO L226 Difference]: Without dead ends: 59 [2018-10-03 09:21:30,933 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 55 [2018-10-03 09:21:30,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-03 09:21:30,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-03 09:21:30,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-03 09:21:30,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-03 09:21:30,936 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-10-03 09:21:30,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:30,936 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-03 09:21:30,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-03 09:21:30,936 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-03 09:21:30,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-03 09:21:30,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:30,937 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-10-03 09:21:30,937 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:30,937 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:30,937 INFO L82 PathProgramCache]: Analyzing trace with hash -836059322, now seen corresponding path program 55 times [2018-10-03 09:21:30,937 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:30,937 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:30,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:30,940 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:30,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:32,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:32,423 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:32,423 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:32,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:21:32,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:32,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:32,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:32,599 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:32,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-03 09:21:32,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-03 09:21:32,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-03 09:21:32,600 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:32,600 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-10-03 09:21:32,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:32,713 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-03 09:21:32,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-03 09:21:32,714 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-10-03 09:21:32,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:32,715 INFO L225 Difference]: With dead ends: 62 [2018-10-03 09:21:32,715 INFO L226 Difference]: Without dead ends: 60 [2018-10-03 09:21:32,715 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.3s impTime 56 [2018-10-03 09:21:32,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-03 09:21:32,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-03 09:21:32,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-03 09:21:32,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-03 09:21:32,717 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-10-03 09:21:32,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:32,717 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-03 09:21:32,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-03 09:21:32,718 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-03 09:21:32,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-03 09:21:32,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:32,718 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-10-03 09:21:32,718 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:32,718 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:32,719 INFO L82 PathProgramCache]: Analyzing trace with hash -148039072, now seen corresponding path program 56 times [2018-10-03 09:21:32,719 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:32,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:32,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:32,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:21:32,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:34,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:34,218 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:34,218 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:34,225 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:21:34,256 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:21:34,256 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:34,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:34,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:34,385 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:34,385 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-03 09:21:34,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-03 09:21:34,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-03 09:21:34,386 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:34,386 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-10-03 09:21:34,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:34,461 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-03 09:21:34,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-03 09:21:34,461 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-10-03 09:21:34,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:34,462 INFO L225 Difference]: With dead ends: 63 [2018-10-03 09:21:34,462 INFO L226 Difference]: Without dead ends: 61 [2018-10-03 09:21:34,463 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.2s impTime 57 [2018-10-03 09:21:34,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-03 09:21:34,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-03 09:21:34,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-03 09:21:34,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-03 09:21:34,465 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-10-03 09:21:34,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:34,465 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-03 09:21:34,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-03 09:21:34,465 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-03 09:21:34,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-03 09:21:34,466 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:34,466 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-10-03 09:21:34,466 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:34,466 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:34,466 INFO L82 PathProgramCache]: Analyzing trace with hash -294247802, now seen corresponding path program 57 times [2018-10-03 09:21:34,467 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:34,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:34,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:34,467 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:34,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:35,993 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:35,993 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:36,001 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:21:36,047 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-03 09:21:36,047 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:36,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:36,216 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:36,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-03 09:21:36,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-03 09:21:36,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-03 09:21:36,217 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:36,217 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-10-03 09:21:36,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:36,334 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-10-03 09:21:36,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-03 09:21:36,334 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-10-03 09:21:36,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:36,335 INFO L225 Difference]: With dead ends: 64 [2018-10-03 09:21:36,335 INFO L226 Difference]: Without dead ends: 62 [2018-10-03 09:21:36,335 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.3s impTime 58 [2018-10-03 09:21:36,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-03 09:21:36,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-03 09:21:36,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-03 09:21:36,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-03 09:21:36,339 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-10-03 09:21:36,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:36,339 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-03 09:21:36,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-03 09:21:36,339 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-03 09:21:36,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-03 09:21:36,340 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:36,340 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-10-03 09:21:36,340 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:36,340 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:36,340 INFO L82 PathProgramCache]: Analyzing trace with hash -531751136, now seen corresponding path program 58 times [2018-10-03 09:21:36,340 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:36,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:36,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:36,341 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:36,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:37,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:37,617 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:37,617 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:37,627 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:21:37,661 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:21:37,661 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:37,663 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:37,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:37,802 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:37,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-03 09:21:37,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-03 09:21:37,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-03 09:21:37,803 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:37,803 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-10-03 09:21:37,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:37,899 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-03 09:21:37,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-03 09:21:37,899 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-10-03 09:21:37,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:37,900 INFO L225 Difference]: With dead ends: 65 [2018-10-03 09:21:37,900 INFO L226 Difference]: Without dead ends: 63 [2018-10-03 09:21:37,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime 59 [2018-10-03 09:21:37,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-03 09:21:37,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-03 09:21:37,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-03 09:21:37,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-03 09:21:37,903 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-10-03 09:21:37,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:37,904 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-03 09:21:37,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-03 09:21:37,904 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-03 09:21:37,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-03 09:21:37,904 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:37,904 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-10-03 09:21:37,904 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:37,904 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:37,905 INFO L82 PathProgramCache]: Analyzing trace with hash 695580102, now seen corresponding path program 59 times [2018-10-03 09:21:37,905 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:37,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:37,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:37,905 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:37,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:40,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:40,535 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:40,535 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:40,543 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:21:40,589 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-03 09:21:40,590 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:40,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:40,753 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:40,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-03 09:21:40,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-03 09:21:40,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-03 09:21:40,754 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:40,754 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-10-03 09:21:40,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:40,852 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-10-03 09:21:40,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-03 09:21:40,853 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-10-03 09:21:40,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:40,853 INFO L225 Difference]: With dead ends: 66 [2018-10-03 09:21:40,854 INFO L226 Difference]: Without dead ends: 64 [2018-10-03 09:21:40,854 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.1s impTime 60 [2018-10-03 09:21:40,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-03 09:21:40,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-03 09:21:40,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-03 09:21:40,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-03 09:21:40,855 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-10-03 09:21:40,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:40,856 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-03 09:21:40,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-03 09:21:40,856 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-03 09:21:40,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-03 09:21:40,856 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:40,856 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-10-03 09:21:40,856 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:40,857 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:40,857 INFO L82 PathProgramCache]: Analyzing trace with hash 88142816, now seen corresponding path program 60 times [2018-10-03 09:21:40,857 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:40,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:40,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:40,858 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:40,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:43,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:43,083 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:43,083 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:43,091 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:21:43,139 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-03 09:21:43,139 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:43,141 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:43,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:43,343 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:43,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-03 09:21:43,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-03 09:21:43,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-03 09:21:43,343 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:43,344 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-10-03 09:21:43,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:43,455 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-03 09:21:43,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-03 09:21:43,455 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-10-03 09:21:43,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:43,456 INFO L225 Difference]: With dead ends: 67 [2018-10-03 09:21:43,456 INFO L226 Difference]: Without dead ends: 65 [2018-10-03 09:21:43,456 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.8s impTime 61 [2018-10-03 09:21:43,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-03 09:21:43,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-03 09:21:43,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-03 09:21:43,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-03 09:21:43,459 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-10-03 09:21:43,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:43,459 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-03 09:21:43,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-03 09:21:43,460 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-03 09:21:43,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-03 09:21:43,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:43,460 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-10-03 09:21:43,460 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:43,460 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:43,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1562543866, now seen corresponding path program 61 times [2018-10-03 09:21:43,460 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:43,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:43,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:43,461 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:43,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:45,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:45,049 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:45,049 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 09:21:45,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:21:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:45,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:45,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:45,227 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:45,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-03 09:21:45,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-03 09:21:45,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-03 09:21:45,228 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:45,228 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-10-03 09:21:45,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:45,340 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-03 09:21:45,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-03 09:21:45,340 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-10-03 09:21:45,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:45,341 INFO L225 Difference]: With dead ends: 68 [2018-10-03 09:21:45,341 INFO L226 Difference]: Without dead ends: 66 [2018-10-03 09:21:45,341 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.4s impTime 62 [2018-10-03 09:21:45,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-03 09:21:45,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-03 09:21:45,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-03 09:21:45,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-03 09:21:45,344 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-10-03 09:21:45,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:45,344 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-03 09:21:45,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-03 09:21:45,344 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-03 09:21:45,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-03 09:21:45,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:45,345 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-10-03 09:21:45,345 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:45,345 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:45,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1194223456, now seen corresponding path program 62 times [2018-10-03 09:21:45,345 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:45,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:45,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:45,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:21:45,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:46,756 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:46,756 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 09:21:46,766 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:21:46,804 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:21:46,804 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:46,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:46,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:46,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:46,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-03 09:21:46,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-03 09:21:46,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-03 09:21:46,962 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:46,962 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-10-03 09:21:47,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:47,125 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-03 09:21:47,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-03 09:21:47,125 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-10-03 09:21:47,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:47,126 INFO L225 Difference]: With dead ends: 69 [2018-10-03 09:21:47,126 INFO L226 Difference]: Without dead ends: 67 [2018-10-03 09:21:47,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.2s impTime 63 [2018-10-03 09:21:47,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-03 09:21:47,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-03 09:21:47,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-03 09:21:47,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-03 09:21:47,129 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-10-03 09:21:47,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:47,129 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-03 09:21:47,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-03 09:21:47,129 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-03 09:21:47,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-03 09:21:47,130 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:47,130 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-10-03 09:21:47,130 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:47,130 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:47,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1633774662, now seen corresponding path program 63 times [2018-10-03 09:21:47,130 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:47,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:47,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:47,131 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:47,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:48,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:48,805 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:48,805 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:48,817 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:21:48,935 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-03 09:21:48,935 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:48,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:49,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:49,223 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:49,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-03 09:21:49,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-03 09:21:49,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-03 09:21:49,224 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:49,225 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-10-03 09:21:49,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:49,506 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-03 09:21:49,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-03 09:21:49,507 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-10-03 09:21:49,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:49,507 INFO L225 Difference]: With dead ends: 70 [2018-10-03 09:21:49,508 INFO L226 Difference]: Without dead ends: 68 [2018-10-03 09:21:49,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.5s impTime 64 [2018-10-03 09:21:49,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-03 09:21:49,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-03 09:21:49,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-03 09:21:49,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-03 09:21:49,512 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-10-03 09:21:49,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:49,512 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-03 09:21:49,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-03 09:21:49,512 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-03 09:21:49,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-03 09:21:49,513 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:49,513 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-10-03 09:21:49,513 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:49,513 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:49,513 INFO L82 PathProgramCache]: Analyzing trace with hash -892596896, now seen corresponding path program 64 times [2018-10-03 09:21:49,513 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:49,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:49,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:49,514 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:49,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:51,107 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:51,107 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 09:21:51,123 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:21:51,178 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:21:51,179 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:51,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:51,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:51,331 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:51,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-03 09:21:51,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-03 09:21:51,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-03 09:21:51,333 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:51,333 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-10-03 09:21:51,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:51,455 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-03 09:21:51,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-03 09:21:51,455 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-10-03 09:21:51,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:51,456 INFO L225 Difference]: With dead ends: 71 [2018-10-03 09:21:51,456 INFO L226 Difference]: Without dead ends: 69 [2018-10-03 09:21:51,457 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.3s impTime 65 [2018-10-03 09:21:51,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-03 09:21:51,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-03 09:21:51,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-03 09:21:51,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-03 09:21:51,459 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-10-03 09:21:51,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:51,460 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-03 09:21:51,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-03 09:21:51,460 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-03 09:21:51,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-03 09:21:51,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:51,460 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-10-03 09:21:51,461 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:51,461 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:51,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1900703866, now seen corresponding path program 65 times [2018-10-03 09:21:51,461 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:51,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:51,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:51,461 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:51,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:52,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:52,616 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:52,624 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:21:52,679 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-03 09:21:52,679 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:52,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:52,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:52,856 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:52,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-03 09:21:52,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-03 09:21:52,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-03 09:21:52,858 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:52,858 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-10-03 09:21:53,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:53,079 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-10-03 09:21:53,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-03 09:21:53,079 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-10-03 09:21:53,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:53,080 INFO L225 Difference]: With dead ends: 72 [2018-10-03 09:21:53,080 INFO L226 Difference]: Without dead ends: 70 [2018-10-03 09:21:53,081 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 66 [2018-10-03 09:21:53,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-03 09:21:53,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-03 09:21:53,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-03 09:21:53,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-03 09:21:53,082 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-10-03 09:21:53,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:53,083 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-03 09:21:53,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-03 09:21:53,083 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-03 09:21:53,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-03 09:21:53,083 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:53,083 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-10-03 09:21:53,083 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:53,083 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:53,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1207718432, now seen corresponding path program 66 times [2018-10-03 09:21:53,084 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:53,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:53,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:53,084 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:53,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:55,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:55,371 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:55,371 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:55,388 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:21:55,487 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-03 09:21:55,487 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:55,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:57,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:57,126 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:57,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-03 09:21:57,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-03 09:21:57,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-03 09:21:57,127 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:57,127 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-10-03 09:21:57,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:57,247 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-03 09:21:57,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-03 09:21:57,247 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-10-03 09:21:57,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:57,248 INFO L225 Difference]: With dead ends: 73 [2018-10-03 09:21:57,248 INFO L226 Difference]: Without dead ends: 71 [2018-10-03 09:21:57,248 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time 2.1s impTime 67 [2018-10-03 09:21:57,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-03 09:21:57,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-03 09:21:57,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-03 09:21:57,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-03 09:21:57,251 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-10-03 09:21:57,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:57,251 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-03 09:21:57,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-03 09:21:57,251 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-03 09:21:57,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-03 09:21:57,252 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:57,252 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-10-03 09:21:57,252 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:57,252 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:57,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1215438138, now seen corresponding path program 67 times [2018-10-03 09:21:57,252 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:57,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:57,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:57,253 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:57,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:59,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:59,366 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:59,366 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 09:21:59,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:21:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:59,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:59,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:59,571 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:59,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-03 09:21:59,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-03 09:21:59,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-03 09:21:59,572 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:59,572 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-10-03 09:21:59,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:59,706 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-03 09:21:59,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-03 09:21:59,706 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-10-03 09:21:59,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:59,707 INFO L225 Difference]: With dead ends: 74 [2018-10-03 09:21:59,707 INFO L226 Difference]: Without dead ends: 72 [2018-10-03 09:21:59,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.9s impTime 68 [2018-10-03 09:21:59,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-03 09:21:59,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-03 09:21:59,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-03 09:21:59,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-03 09:21:59,710 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-10-03 09:21:59,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:59,710 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-03 09:21:59,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-03 09:21:59,711 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-03 09:21:59,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-03 09:21:59,711 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:59,711 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-10-03 09:21:59,712 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:59,712 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:59,712 INFO L82 PathProgramCache]: Analyzing trace with hash 976119520, now seen corresponding path program 68 times [2018-10-03 09:21:59,712 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:59,712 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:59,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:59,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:21:59,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:01,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:01,404 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:01,404 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 09:22:01,426 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:22:01,464 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:22:01,464 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:01,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:01,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:01,608 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:01,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-03 09:22:01,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-03 09:22:01,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-03 09:22:01,609 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:01,609 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-10-03 09:22:01,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:01,734 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-03 09:22:01,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-03 09:22:01,735 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-10-03 09:22:01,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:01,736 INFO L225 Difference]: With dead ends: 75 [2018-10-03 09:22:01,736 INFO L226 Difference]: Without dead ends: 73 [2018-10-03 09:22:01,736 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.5s impTime 69 [2018-10-03 09:22:01,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-03 09:22:01,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-03 09:22:01,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-03 09:22:01,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-03 09:22:01,739 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-10-03 09:22:01,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:01,739 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-03 09:22:01,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-03 09:22:01,739 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-03 09:22:01,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-03 09:22:01,739 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:01,740 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-10-03 09:22:01,740 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:01,740 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:01,740 INFO L82 PathProgramCache]: Analyzing trace with hash 194930182, now seen corresponding path program 69 times [2018-10-03 09:22:01,740 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:01,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:01,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:01,741 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:01,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:03,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:03,764 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:03,764 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 09:22:03,771 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:22:03,847 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-03 09:22:03,847 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:03,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:04,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:04,297 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:04,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-03 09:22:04,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-03 09:22:04,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-03 09:22:04,298 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:04,298 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-10-03 09:22:04,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:04,528 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-03 09:22:04,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-03 09:22:04,528 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-10-03 09:22:04,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:04,529 INFO L225 Difference]: With dead ends: 76 [2018-10-03 09:22:04,529 INFO L226 Difference]: Without dead ends: 74 [2018-10-03 09:22:04,530 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.8s impTime 70 [2018-10-03 09:22:04,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-03 09:22:04,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-03 09:22:04,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-03 09:22:04,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-03 09:22:04,533 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-10-03 09:22:04,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:04,533 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-03 09:22:04,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-03 09:22:04,533 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-03 09:22:04,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-03 09:22:04,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:04,534 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-10-03 09:22:04,534 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:04,534 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:04,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1747864480, now seen corresponding path program 70 times [2018-10-03 09:22:04,535 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:04,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:04,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:04,535 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:04,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:06,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:06,882 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:06,882 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 09:22:06,889 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:22:06,929 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:22:06,929 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:06,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:07,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:07,085 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:07,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-03 09:22:07,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-03 09:22:07,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-03 09:22:07,086 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:07,086 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-10-03 09:22:07,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:07,288 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-03 09:22:07,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-03 09:22:07,289 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-10-03 09:22:07,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:07,290 INFO L225 Difference]: With dead ends: 77 [2018-10-03 09:22:07,290 INFO L226 Difference]: Without dead ends: 75 [2018-10-03 09:22:07,290 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.1s impTime 71 [2018-10-03 09:22:07,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-03 09:22:07,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-03 09:22:07,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-03 09:22:07,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-03 09:22:07,294 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-10-03 09:22:07,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:07,294 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-03 09:22:07,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-03 09:22:07,294 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-03 09:22:07,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-03 09:22:07,295 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:07,295 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-10-03 09:22:07,295 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:07,295 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:07,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1650779834, now seen corresponding path program 71 times [2018-10-03 09:22:07,296 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:07,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:07,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:07,296 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:07,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:09,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:09,197 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:09,197 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:22:09,205 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:22:09,275 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-03 09:22:09,276 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:09,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:09,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:09,688 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:09,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-03 09:22:09,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-03 09:22:09,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-03 09:22:09,689 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:09,689 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-10-03 09:22:09,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:09,805 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-10-03 09:22:09,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-03 09:22:09,806 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-10-03 09:22:09,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:09,807 INFO L225 Difference]: With dead ends: 78 [2018-10-03 09:22:09,807 INFO L226 Difference]: Without dead ends: 76 [2018-10-03 09:22:09,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.5s impTime 72 [2018-10-03 09:22:09,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-03 09:22:09,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-03 09:22:09,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-03 09:22:09,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-03 09:22:09,810 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-10-03 09:22:09,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:09,810 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-03 09:22:09,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-03 09:22:09,810 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-03 09:22:09,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-03 09:22:09,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:09,811 INFO L375 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-10-03 09:22:09,811 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:09,811 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:09,811 INFO L82 PathProgramCache]: Analyzing trace with hash 365428832, now seen corresponding path program 72 times [2018-10-03 09:22:09,811 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:09,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:09,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:09,812 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:09,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:11,845 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:11,845 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 09:22:11,852 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:22:11,919 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-03 09:22:11,920 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:11,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:12,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:12,139 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:12,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-03 09:22:12,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-03 09:22:12,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-03 09:22:12,140 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:12,140 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-10-03 09:22:12,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:12,253 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-03 09:22:12,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-03 09:22:12,253 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-10-03 09:22:12,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:12,254 INFO L225 Difference]: With dead ends: 79 [2018-10-03 09:22:12,254 INFO L226 Difference]: Without dead ends: 77 [2018-10-03 09:22:12,255 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime 73 [2018-10-03 09:22:12,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-03 09:22:12,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-03 09:22:12,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-03 09:22:12,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-03 09:22:12,258 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-10-03 09:22:12,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:12,258 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-03 09:22:12,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-03 09:22:12,258 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-03 09:22:12,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-03 09:22:12,259 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:12,259 INFO L375 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-10-03 09:22:12,259 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:12,259 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:12,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1556611962, now seen corresponding path program 73 times [2018-10-03 09:22:12,259 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:12,259 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:12,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:12,260 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:12,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:14,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:14,337 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:14,337 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 09:22:14,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:22:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:14,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:14,554 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:14,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-03 09:22:14,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-03 09:22:14,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-03 09:22:14,555 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:14,555 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-10-03 09:22:14,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:14,744 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-10-03 09:22:14,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-03 09:22:14,745 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-10-03 09:22:14,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:14,745 INFO L225 Difference]: With dead ends: 80 [2018-10-03 09:22:14,745 INFO L226 Difference]: Without dead ends: 78 [2018-10-03 09:22:14,745 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.9s impTime 74 [2018-10-03 09:22:14,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-03 09:22:14,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-03 09:22:14,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-03 09:22:14,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-03 09:22:14,748 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-10-03 09:22:14,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:14,749 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-03 09:22:14,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-03 09:22:14,749 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-03 09:22:14,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-03 09:22:14,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:14,749 INFO L375 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-10-03 09:22:14,750 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:14,750 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:14,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1010334432, now seen corresponding path program 74 times [2018-10-03 09:22:14,750 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:14,750 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:14,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:14,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:22:14,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:16,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:16,943 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:16,943 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:22:16,950 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:22:16,994 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:22:16,995 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:16,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:17,162 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:17,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-03 09:22:17,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-03 09:22:17,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-03 09:22:17,163 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:17,163 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. [2018-10-03 09:22:17,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:17,324 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-03 09:22:17,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-03 09:22:17,324 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 77 [2018-10-03 09:22:17,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:17,325 INFO L225 Difference]: With dead ends: 81 [2018-10-03 09:22:17,325 INFO L226 Difference]: Without dead ends: 79 [2018-10-03 09:22:17,326 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 2.0s impTime 75 [2018-10-03 09:22:17,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-03 09:22:17,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-03 09:22:17,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-03 09:22:17,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-03 09:22:17,328 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-10-03 09:22:17,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:17,328 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-03 09:22:17,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-03 09:22:17,328 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-03 09:22:17,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-03 09:22:17,329 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:17,329 INFO L375 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-10-03 09:22:17,329 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:17,329 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:17,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1255600186, now seen corresponding path program 75 times [2018-10-03 09:22:17,329 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:17,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:17,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:17,330 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:17,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:19,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:19,624 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:19,624 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:22:19,632 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:22:19,740 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-10-03 09:22:19,741 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:19,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:19,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:19,933 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:19,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-03 09:22:19,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-03 09:22:19,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-03 09:22:19,934 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:19,934 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 78 states. [2018-10-03 09:22:20,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:20,088 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-10-03 09:22:20,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-03 09:22:20,089 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2018-10-03 09:22:20,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:20,090 INFO L225 Difference]: With dead ends: 82 [2018-10-03 09:22:20,090 INFO L226 Difference]: Without dead ends: 80 [2018-10-03 09:22:20,090 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.1s impTime 76 [2018-10-03 09:22:20,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-03 09:22:20,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-10-03 09:22:20,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-03 09:22:20,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-03 09:22:20,092 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-10-03 09:22:20,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:20,092 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-03 09:22:20,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-03 09:22:20,092 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-03 09:22:20,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-03 09:22:20,093 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:20,093 INFO L375 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-10-03 09:22:20,093 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:20,093 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:20,093 INFO L82 PathProgramCache]: Analyzing trace with hash -268903968, now seen corresponding path program 76 times [2018-10-03 09:22:20,093 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:20,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:20,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:20,094 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:20,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:22,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:22,369 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:22,369 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 09:22:22,376 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:22:22,417 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:22:22,417 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:22,420 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:22,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:22,574 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:22,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-03 09:22:22,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-03 09:22:22,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-03 09:22:22,576 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:22,576 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 79 states. [2018-10-03 09:22:23,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:23,770 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-03 09:22:23,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-03 09:22:23,771 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 79 [2018-10-03 09:22:23,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:23,772 INFO L225 Difference]: With dead ends: 83 [2018-10-03 09:22:23,772 INFO L226 Difference]: Without dead ends: 81 [2018-10-03 09:22:23,772 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.1s impTime 77 [2018-10-03 09:22:23,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-03 09:22:23,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-03 09:22:23,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-03 09:22:23,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-03 09:22:23,774 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-10-03 09:22:23,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:23,775 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-03 09:22:23,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-03 09:22:23,775 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-03 09:22:23,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-03 09:22:23,775 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:23,776 INFO L375 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-10-03 09:22:23,776 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:23,776 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:23,776 INFO L82 PathProgramCache]: Analyzing trace with hash 253907718, now seen corresponding path program 77 times [2018-10-03 09:22:23,776 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:23,776 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:23,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:23,777 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:23,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:26,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:26,075 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:26,075 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:22:26,083 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:22:26,150 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-10-03 09:22:26,150 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:26,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:26,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:26,441 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:26,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-03 09:22:26,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-03 09:22:26,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-03 09:22:26,442 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:26,442 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 80 states. [2018-10-03 09:22:26,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:26,556 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-10-03 09:22:26,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-03 09:22:26,557 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 80 [2018-10-03 09:22:26,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:26,557 INFO L225 Difference]: With dead ends: 84 [2018-10-03 09:22:26,558 INFO L226 Difference]: Without dead ends: 82 [2018-10-03 09:22:26,558 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.0s impTime 78 [2018-10-03 09:22:26,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-03 09:22:26,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-10-03 09:22:26,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-03 09:22:26,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-10-03 09:22:26,561 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-10-03 09:22:26,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:26,562 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-10-03 09:22:26,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-03 09:22:26,562 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-10-03 09:22:26,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-03 09:22:26,562 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:26,562 INFO L375 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-10-03 09:22:26,563 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:26,563 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:26,563 INFO L82 PathProgramCache]: Analyzing trace with hash -718799200, now seen corresponding path program 78 times [2018-10-03 09:22:26,563 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:26,563 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:26,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:26,564 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:26,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:28,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:28,287 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:28,287 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 09:22:28,295 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:22:28,364 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2018-10-03 09:22:28,364 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:28,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:28,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:28,547 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:28,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-03 09:22:28,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-03 09:22:28,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-03 09:22:28,549 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:28,549 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 81 states. [2018-10-03 09:22:28,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:28,682 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-03 09:22:28,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-03 09:22:28,682 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 81 [2018-10-03 09:22:28,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:28,683 INFO L225 Difference]: With dead ends: 85 [2018-10-03 09:22:28,683 INFO L226 Difference]: Without dead ends: 83 [2018-10-03 09:22:28,683 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime 79 [2018-10-03 09:22:28,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-03 09:22:28,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-03 09:22:28,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-03 09:22:28,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-03 09:22:28,685 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-10-03 09:22:28,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:28,686 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-03 09:22:28,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-03 09:22:28,686 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-03 09:22:28,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-03 09:22:28,686 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:28,686 INFO L375 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-10-03 09:22:28,687 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:28,687 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:28,687 INFO L82 PathProgramCache]: Analyzing trace with hash -807942586, now seen corresponding path program 79 times [2018-10-03 09:22:28,687 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:28,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:28,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:28,688 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:28,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:31,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:31,841 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:31,841 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:22:31,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:22:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:31,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:32,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:32,111 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:32,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-03 09:22:32,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-03 09:22:32,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-03 09:22:32,112 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:32,112 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 82 states. [2018-10-03 09:22:32,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:32,279 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-10-03 09:22:32,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-03 09:22:32,279 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82 [2018-10-03 09:22:32,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:32,280 INFO L225 Difference]: With dead ends: 86 [2018-10-03 09:22:32,280 INFO L226 Difference]: Without dead ends: 84 [2018-10-03 09:22:32,280 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.8s impTime 80 [2018-10-03 09:22:32,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-03 09:22:32,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-10-03 09:22:32,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-03 09:22:32,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-10-03 09:22:32,282 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-10-03 09:22:32,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:32,282 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-10-03 09:22:32,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-03 09:22:32,282 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-10-03 09:22:32,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-03 09:22:32,283 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:32,283 INFO L375 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-10-03 09:22:32,283 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:32,283 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:32,283 INFO L82 PathProgramCache]: Analyzing trace with hash 723579744, now seen corresponding path program 80 times [2018-10-03 09:22:32,283 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:32,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:32,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:32,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:22:32,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:34,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:34,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:34,498 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:22:34,505 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:22:34,552 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:22:34,552 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:34,555 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:35,560 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:35,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-03 09:22:35,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-03 09:22:35,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-03 09:22:35,561 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:35,561 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 83 states. [2018-10-03 09:22:35,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:35,697 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-03 09:22:35,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-03 09:22:35,697 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 83 [2018-10-03 09:22:35,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:35,698 INFO L225 Difference]: With dead ends: 87 [2018-10-03 09:22:35,698 INFO L226 Difference]: Without dead ends: 85 [2018-10-03 09:22:35,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.0s impTime 81 [2018-10-03 09:22:35,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-03 09:22:35,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-03 09:22:35,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-03 09:22:35,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-03 09:22:35,701 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-10-03 09:22:35,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:35,702 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-03 09:22:35,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-03 09:22:35,702 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-03 09:22:35,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-03 09:22:35,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:35,703 INFO L375 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-10-03 09:22:35,703 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:35,703 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:35,703 INFO L82 PathProgramCache]: Analyzing trace with hash 956131718, now seen corresponding path program 81 times [2018-10-03 09:22:35,703 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:35,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:35,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:35,704 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:35,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:38,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:38,336 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:38,336 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:22:38,343 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:22:38,418 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-10-03 09:22:38,418 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:38,421 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:38,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:38,596 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:38,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-03 09:22:38,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-03 09:22:38,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-03 09:22:38,597 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:38,597 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 84 states. [2018-10-03 09:22:38,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:38,755 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-10-03 09:22:38,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-03 09:22:38,755 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 84 [2018-10-03 09:22:38,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:38,756 INFO L225 Difference]: With dead ends: 88 [2018-10-03 09:22:38,756 INFO L226 Difference]: Without dead ends: 86 [2018-10-03 09:22:38,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.3s impTime 82 [2018-10-03 09:22:38,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-03 09:22:38,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-03 09:22:38,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-03 09:22:38,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-10-03 09:22:38,758 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-10-03 09:22:38,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:38,758 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-10-03 09:22:38,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-03 09:22:38,758 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-10-03 09:22:38,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-03 09:22:38,759 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:38,759 INFO L375 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-10-03 09:22:38,759 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:38,759 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:38,759 INFO L82 PathProgramCache]: Analyzing trace with hash -424691680, now seen corresponding path program 82 times [2018-10-03 09:22:38,759 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:38,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:38,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:38,760 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:38,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:41,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:41,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:41,132 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:22:41,141 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:22:41,190 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:22:41,190 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:41,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:41,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:41,521 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:41,521 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-03 09:22:41,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-03 09:22:41,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-03 09:22:41,522 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:41,522 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 85 states. [2018-10-03 09:22:41,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:41,974 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-03 09:22:41,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-03 09:22:41,975 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 85 [2018-10-03 09:22:41,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:41,975 INFO L225 Difference]: With dead ends: 89 [2018-10-03 09:22:41,975 INFO L226 Difference]: Without dead ends: 87 [2018-10-03 09:22:41,976 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.0s impTime 83 [2018-10-03 09:22:41,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-03 09:22:41,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-03 09:22:41,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-03 09:22:41,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-03 09:22:41,979 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-10-03 09:22:41,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:41,979 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-03 09:22:41,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-03 09:22:41,979 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-03 09:22:41,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-03 09:22:41,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:41,980 INFO L375 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-10-03 09:22:41,980 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:41,980 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:41,980 INFO L82 PathProgramCache]: Analyzing trace with hash -280544058, now seen corresponding path program 83 times [2018-10-03 09:22:41,980 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:41,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:41,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:41,981 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:41,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:45,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:45,190 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:45,190 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 09:22:45,198 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:22:45,273 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-03 09:22:45,274 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:45,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:45,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:45,482 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:45,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-03 09:22:45,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-03 09:22:45,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-03 09:22:45,483 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:45,483 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 86 states. [2018-10-03 09:22:45,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:45,699 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-10-03 09:22:45,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-03 09:22:45,699 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86 [2018-10-03 09:22:45,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:45,700 INFO L225 Difference]: With dead ends: 90 [2018-10-03 09:22:45,700 INFO L226 Difference]: Without dead ends: 88 [2018-10-03 09:22:45,700 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 3.0s impTime 84 [2018-10-03 09:22:45,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-03 09:22:45,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-10-03 09:22:45,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-03 09:22:45,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-10-03 09:22:45,702 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-10-03 09:22:45,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:45,703 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-10-03 09:22:45,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-03 09:22:45,703 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-10-03 09:22:45,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-03 09:22:45,704 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:45,704 INFO L375 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-10-03 09:22:45,704 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:45,704 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:45,704 INFO L82 PathProgramCache]: Analyzing trace with hash -106935072, now seen corresponding path program 84 times [2018-10-03 09:22:45,704 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:45,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:45,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:45,705 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:45,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:47,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:47,683 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:47,683 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:22:47,692 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:22:47,767 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-03 09:22:47,767 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:47,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:47,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:47,951 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:47,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-03 09:22:47,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-03 09:22:47,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-03 09:22:47,953 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:47,953 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 87 states. [2018-10-03 09:22:48,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:48,322 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-03 09:22:48,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-03 09:22:48,322 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 87 [2018-10-03 09:22:48,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:48,323 INFO L225 Difference]: With dead ends: 91 [2018-10-03 09:22:48,323 INFO L226 Difference]: Without dead ends: 89 [2018-10-03 09:22:48,323 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.7s impTime 85 [2018-10-03 09:22:48,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-03 09:22:48,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-03 09:22:48,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-03 09:22:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-03 09:22:48,325 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-10-03 09:22:48,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:48,325 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-03 09:22:48,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-03 09:22:48,326 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-03 09:22:48,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-03 09:22:48,326 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:48,326 INFO L375 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-10-03 09:22:48,326 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:48,327 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:48,327 INFO L82 PathProgramCache]: Analyzing trace with hash 979976198, now seen corresponding path program 85 times [2018-10-03 09:22:48,327 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:48,327 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:48,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:48,328 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:48,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:50,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:50,205 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:50,205 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:22:50,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:22:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:50,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:50,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:50,428 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:50,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-03 09:22:50,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-03 09:22:50,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-03 09:22:50,429 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:50,429 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 88 states. [2018-10-03 09:22:50,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:50,589 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-10-03 09:22:50,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-03 09:22:50,589 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 88 [2018-10-03 09:22:50,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:50,589 INFO L225 Difference]: With dead ends: 92 [2018-10-03 09:22:50,590 INFO L226 Difference]: Without dead ends: 90 [2018-10-03 09:22:50,590 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.6s impTime 86 [2018-10-03 09:22:50,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-03 09:22:50,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-10-03 09:22:50,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-03 09:22:50,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-10-03 09:22:50,593 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-10-03 09:22:50,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:50,593 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-10-03 09:22:50,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-03 09:22:50,593 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-10-03 09:22:50,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-03 09:22:50,594 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:50,594 INFO L375 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-10-03 09:22:50,594 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:50,594 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:50,595 INFO L82 PathProgramCache]: Analyzing trace with hash 314487200, now seen corresponding path program 86 times [2018-10-03 09:22:50,595 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:50,595 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:50,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:50,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:22:50,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:52,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:52,826 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:52,826 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:22:52,833 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:22:52,880 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:22:52,881 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:52,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:53,058 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:53,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-03 09:22:53,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-03 09:22:53,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-03 09:22:53,060 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:53,060 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 89 states. [2018-10-03 09:22:53,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:53,212 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-03 09:22:53,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-03 09:22:53,212 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 89 [2018-10-03 09:22:53,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:53,213 INFO L225 Difference]: With dead ends: 93 [2018-10-03 09:22:53,213 INFO L226 Difference]: Without dead ends: 91 [2018-10-03 09:22:53,213 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.0s impTime 87 [2018-10-03 09:22:53,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-03 09:22:53,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-03 09:22:53,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-03 09:22:53,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-03 09:22:53,216 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-10-03 09:22:53,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:53,216 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-03 09:22:53,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-03 09:22:53,217 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-03 09:22:53,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-03 09:22:53,217 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:53,217 INFO L375 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-10-03 09:22:53,217 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:53,217 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:53,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1159164742, now seen corresponding path program 87 times [2018-10-03 09:22:53,217 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:53,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:53,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:53,218 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:53,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:55,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:55,792 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:55,793 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:22:55,803 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:22:55,884 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2018-10-03 09:22:55,884 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:55,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:56,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:56,062 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:56,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-03 09:22:56,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-03 09:22:56,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-03 09:22:56,064 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:56,064 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 90 states. [2018-10-03 09:22:56,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:56,232 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-10-03 09:22:56,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-03 09:22:56,233 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90 [2018-10-03 09:22:56,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:56,234 INFO L225 Difference]: With dead ends: 94 [2018-10-03 09:22:56,234 INFO L226 Difference]: Without dead ends: 92 [2018-10-03 09:22:56,234 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.3s impTime 88 [2018-10-03 09:22:56,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-03 09:22:56,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-03 09:22:56,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-03 09:22:56,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-10-03 09:22:56,236 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-10-03 09:22:56,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:56,237 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-10-03 09:22:56,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-03 09:22:56,237 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-10-03 09:22:56,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-03 09:22:56,237 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:56,238 INFO L375 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-10-03 09:22:56,238 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:56,238 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:56,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1574364768, now seen corresponding path program 88 times [2018-10-03 09:22:56,238 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:56,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:56,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:56,239 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:56,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:58,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:58,690 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:58,690 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 09:22:58,697 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:22:58,746 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:22:58,747 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:58,750 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:58,935 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:58,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-03 09:22:58,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-03 09:22:58,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-03 09:22:58,936 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:58,937 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 91 states. [2018-10-03 09:22:59,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:59,105 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-03 09:22:59,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-03 09:22:59,105 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 91 [2018-10-03 09:22:59,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:59,106 INFO L225 Difference]: With dead ends: 95 [2018-10-03 09:22:59,106 INFO L226 Difference]: Without dead ends: 93 [2018-10-03 09:22:59,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime 89 [2018-10-03 09:22:59,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-03 09:22:59,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-03 09:22:59,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-03 09:22:59,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-03 09:22:59,108 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-10-03 09:22:59,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:59,108 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-03 09:22:59,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-03 09:22:59,108 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-03 09:22:59,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-03 09:22:59,109 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:59,109 INFO L375 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-10-03 09:22:59,109 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:59,109 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:59,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1560663686, now seen corresponding path program 89 times [2018-10-03 09:22:59,109 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:59,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:59,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:59,110 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:59,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:23:01,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:01,275 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:23:01,275 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 09:23:01,282 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:23:01,417 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-10-03 09:23:01,418 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:23:01,422 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:23:01,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:01,651 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:23:01,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-03 09:23:01,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-03 09:23:01,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-03 09:23:01,652 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:23:01,652 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 92 states. [2018-10-03 09:23:01,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:23:01,802 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-10-03 09:23:01,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-03 09:23:01,803 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 92 [2018-10-03 09:23:01,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:23:01,804 INFO L225 Difference]: With dead ends: 96 [2018-10-03 09:23:01,804 INFO L226 Difference]: Without dead ends: 94 [2018-10-03 09:23:01,804 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.9s impTime 90 [2018-10-03 09:23:01,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-03 09:23:01,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-10-03 09:23:01,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-03 09:23:01,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-03 09:23:01,807 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-10-03 09:23:01,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:23:01,807 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-03 09:23:01,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-03 09:23:01,807 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-03 09:23:01,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-03 09:23:01,808 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:23:01,808 INFO L375 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-10-03 09:23:01,808 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:23:01,808 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:23:01,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1135930144, now seen corresponding path program 90 times [2018-10-03 09:23:01,808 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:23:01,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:23:01,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:01,809 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:23:01,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:23:03,616 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:03,617 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:23:03,617 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:23:03,624 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:23:03,704 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2018-10-03 09:23:03,704 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:23:03,707 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:23:03,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:03,889 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:23:03,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-03 09:23:03,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-03 09:23:03,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-03 09:23:03,890 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:23:03,891 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 93 states. [2018-10-03 09:23:04,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:23:04,035 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-03 09:23:04,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-03 09:23:04,035 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 93 [2018-10-03 09:23:04,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:23:04,036 INFO L225 Difference]: With dead ends: 97 [2018-10-03 09:23:04,036 INFO L226 Difference]: Without dead ends: 95 [2018-10-03 09:23:04,036 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.6s impTime 91 [2018-10-03 09:23:04,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-03 09:23:04,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-03 09:23:04,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-03 09:23:04,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-03 09:23:04,039 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-10-03 09:23:04,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:23:04,039 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-03 09:23:04,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-03 09:23:04,039 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-03 09:23:04,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-03 09:23:04,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:23:04,040 INFO L375 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-10-03 09:23:04,040 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:23:04,040 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:23:04,040 INFO L82 PathProgramCache]: Analyzing trace with hash 854092230, now seen corresponding path program 91 times [2018-10-03 09:23:04,040 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:23:04,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:23:04,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:04,041 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:23:04,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:23:06,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:06,842 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:23:06,842 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 09:23:06,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:23:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:23:06,903 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:23:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:07,079 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:23:07,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-03 09:23:07,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-03 09:23:07,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-03 09:23:07,080 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:23:07,080 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2018-10-03 09:23:07,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:23:07,303 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-10-03 09:23:07,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-03 09:23:07,303 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94 [2018-10-03 09:23:07,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:23:07,304 INFO L225 Difference]: With dead ends: 98 [2018-10-03 09:23:07,304 INFO L226 Difference]: Without dead ends: 96 [2018-10-03 09:23:07,304 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.5s impTime 92 [2018-10-03 09:23:07,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-03 09:23:07,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-03 09:23:07,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-03 09:23:07,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-03 09:23:07,306 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-10-03 09:23:07,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:23:07,306 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-03 09:23:07,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-03 09:23:07,307 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-03 09:23:07,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-03 09:23:07,307 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:23:07,307 INFO L375 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-10-03 09:23:07,307 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:23:07,307 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:23:07,307 INFO L82 PathProgramCache]: Analyzing trace with hash 707051488, now seen corresponding path program 92 times [2018-10-03 09:23:07,307 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:23:07,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:23:07,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:07,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:23:07,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:23:10,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:10,653 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:23:10,653 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 09:23:10,660 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:23:10,709 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:23:10,709 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:23:10,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:23:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:10,909 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:23:10,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-03 09:23:10,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-03 09:23:10,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-03 09:23:10,910 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:23:10,910 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 95 states. [2018-10-03 09:23:11,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:23:11,186 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-03 09:23:11,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-03 09:23:11,187 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 95 [2018-10-03 09:23:11,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:23:11,187 INFO L225 Difference]: With dead ends: 99 [2018-10-03 09:23:11,188 INFO L226 Difference]: Without dead ends: 97 [2018-10-03 09:23:11,188 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 3.1s impTime 93 [2018-10-03 09:23:11,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-03 09:23:11,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-03 09:23:11,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-03 09:23:11,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-03 09:23:11,191 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-10-03 09:23:11,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:23:11,191 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-03 09:23:11,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-03 09:23:11,191 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-03 09:23:11,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-03 09:23:11,192 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:23:11,192 INFO L375 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-10-03 09:23:11,192 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:23:11,192 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:23:11,193 INFO L82 PathProgramCache]: Analyzing trace with hash 443755782, now seen corresponding path program 93 times [2018-10-03 09:23:11,193 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:23:11,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:23:11,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:11,193 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:23:11,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:23:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:13,140 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:23:13,140 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 09:23:13,147 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:23:13,236 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2018-10-03 09:23:13,236 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:23:13,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:23:13,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:13,467 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:23:13,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-03 09:23:13,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-03 09:23:13,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-03 09:23:13,468 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:23:13,468 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 96 states. [2018-10-03 09:23:13,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:23:13,629 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-10-03 09:23:13,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-03 09:23:13,629 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 96 [2018-10-03 09:23:13,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:23:13,630 INFO L225 Difference]: With dead ends: 100 [2018-10-03 09:23:13,630 INFO L226 Difference]: Without dead ends: 98 [2018-10-03 09:23:13,630 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.7s impTime 94 [2018-10-03 09:23:13,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-03 09:23:13,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-10-03 09:23:13,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-10-03 09:23:13,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-10-03 09:23:13,632 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-10-03 09:23:13,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:23:13,632 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-10-03 09:23:13,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-03 09:23:13,632 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-10-03 09:23:13,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-03 09:23:13,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:23:13,632 INFO L375 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-10-03 09:23:13,633 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:23:13,633 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:23:13,633 INFO L82 PathProgramCache]: Analyzing trace with hash 871523488, now seen corresponding path program 94 times [2018-10-03 09:23:13,633 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:23:13,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:23:13,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:13,633 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:23:13,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:23:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:17,434 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:23:17,434 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:23:17,442 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:23:17,494 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:23:17,494 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:23:17,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:23:17,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:17,725 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:23:17,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-03 09:23:17,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-03 09:23:17,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-03 09:23:17,726 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:23:17,726 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 97 states. [2018-10-03 09:23:17,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:23:17,969 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-03 09:23:17,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-03 09:23:17,970 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 97 [2018-10-03 09:23:17,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:23:17,971 INFO L225 Difference]: With dead ends: 101 [2018-10-03 09:23:17,971 INFO L226 Difference]: Without dead ends: 99 [2018-10-03 09:23:17,971 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s Time 3.5s impTime 95 [2018-10-03 09:23:17,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-03 09:23:17,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-03 09:23:17,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-03 09:23:17,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-03 09:23:17,973 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-10-03 09:23:17,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:23:17,973 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-03 09:23:17,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-03 09:23:17,973 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-03 09:23:17,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-03 09:23:17,973 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:23:17,974 INFO L375 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-10-03 09:23:17,974 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:23:17,974 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:23:17,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1247420486, now seen corresponding path program 95 times [2018-10-03 09:23:17,974 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:23:17,974 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:23:17,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:17,975 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:23:17,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:23:20,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:20,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:23:20,022 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 09:23:20,031 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:23:20,120 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-03 09:23:20,121 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:23:20,124 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:23:20,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:20,313 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:23:20,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-03 09:23:20,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-03 09:23:20,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-03 09:23:20,314 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:23:20,315 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 98 states. [2018-10-03 09:23:20,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:23:20,498 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-10-03 09:23:20,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-03 09:23:20,498 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98 [2018-10-03 09:23:20,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:23:20,499 INFO L225 Difference]: With dead ends: 102 [2018-10-03 09:23:20,499 INFO L226 Difference]: Without dead ends: 100 [2018-10-03 09:23:20,499 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime 96 [2018-10-03 09:23:20,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-03 09:23:20,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-03 09:23:20,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-03 09:23:20,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-10-03 09:23:20,502 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-10-03 09:23:20,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:23:20,502 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-10-03 09:23:20,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-03 09:23:20,503 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-10-03 09:23:20,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-03 09:23:20,503 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:23:20,503 INFO L375 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-10-03 09:23:20,503 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:23:20,503 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:23:20,503 INFO L82 PathProgramCache]: Analyzing trace with hash 15325536, now seen corresponding path program 96 times [2018-10-03 09:23:20,504 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:23:20,504 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:23:20,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:20,504 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:23:20,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:23:23,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:23,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:23:23,497 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:23:23,504 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:23:23,591 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-03 09:23:23,591 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:23:23,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:23:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:23,791 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:23:23,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-03 09:23:23,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-03 09:23:23,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-03 09:23:23,792 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:23:23,792 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 99 states. [2018-10-03 09:23:24,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:23:24,004 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-03 09:23:24,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-03 09:23:24,004 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 99 [2018-10-03 09:23:24,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:23:24,005 INFO L225 Difference]: With dead ends: 103 [2018-10-03 09:23:24,005 INFO L226 Difference]: Without dead ends: 101 [2018-10-03 09:23:24,006 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.7s impTime 97 [2018-10-03 09:23:24,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-03 09:23:24,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-03 09:23:24,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-03 09:23:24,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-03 09:23:24,008 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-10-03 09:23:24,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:23:24,008 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-03 09:23:24,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-03 09:23:24,008 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-03 09:23:24,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-03 09:23:24,008 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:23:24,008 INFO L375 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-10-03 09:23:24,008 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:23:24,009 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:23:24,009 INFO L82 PathProgramCache]: Analyzing trace with hash 475087750, now seen corresponding path program 97 times [2018-10-03 09:23:24,009 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:23:24,009 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:23:24,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:24,010 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:23:24,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:23:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:28,175 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:23:28,175 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:23:28,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:23:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:23:28,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:23:28,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:28,441 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:23:28,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-03 09:23:28,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-03 09:23:28,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-03 09:23:28,442 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:23:28,442 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 100 states. [2018-10-03 09:23:28,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:23:28,712 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-03 09:23:28,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-03 09:23:28,712 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 100 [2018-10-03 09:23:28,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:23:28,713 INFO L225 Difference]: With dead ends: 104 [2018-10-03 09:23:28,713 INFO L226 Difference]: Without dead ends: 102 [2018-10-03 09:23:28,714 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s Time 3.9s impTime 98 [2018-10-03 09:23:28,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-10-03 09:23:28,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-10-03 09:23:28,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-10-03 09:23:28,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-10-03 09:23:28,716 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-10-03 09:23:28,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:23:28,716 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-10-03 09:23:28,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-03 09:23:28,716 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-10-03 09:23:28,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-03 09:23:28,717 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:23:28,717 INFO L375 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-10-03 09:23:28,717 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:23:28,717 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:23:28,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1842814496, now seen corresponding path program 98 times [2018-10-03 09:23:28,717 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:23:28,717 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:23:28,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:28,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:23:28,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:23:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:31,629 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:23:31,629 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:23:31,636 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:23:31,692 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:23:31,692 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:23:31,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:23:31,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:31,899 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:23:31,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-03 09:23:31,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-03 09:23:31,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-03 09:23:31,900 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:23:31,900 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2018-10-03 09:23:32,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:23:32,155 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-03 09:23:32,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-03 09:23:32,155 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2018-10-03 09:23:32,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:23:32,156 INFO L225 Difference]: With dead ends: 105 [2018-10-03 09:23:32,156 INFO L226 Difference]: Without dead ends: 103 [2018-10-03 09:23:32,156 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.6s impTime 99 [2018-10-03 09:23:32,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-03 09:23:32,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-03 09:23:32,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-03 09:23:32,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-03 09:23:32,158 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-10-03 09:23:32,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:23:32,158 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-03 09:23:32,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-03 09:23:32,159 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-03 09:23:32,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-03 09:23:32,159 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:23:32,159 INFO L375 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-10-03 09:23:32,160 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:23:32,160 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:23:32,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1292670662, now seen corresponding path program 99 times [2018-10-03 09:23:32,160 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:23:32,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:23:32,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:32,160 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:23:32,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:23:34,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:34,646 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:23:34,646 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:23:34,654 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:23:34,756 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2018-10-03 09:23:34,756 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:23:34,759 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:23:34,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:34,947 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:23:34,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-03 09:23:34,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-03 09:23:34,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-03 09:23:34,948 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:23:34,948 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 102 states. [2018-10-03 09:23:35,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:23:35,183 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-10-03 09:23:35,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-03 09:23:35,183 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102 [2018-10-03 09:23:35,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:23:35,184 INFO L225 Difference]: With dead ends: 106 [2018-10-03 09:23:35,184 INFO L226 Difference]: Without dead ends: 104 [2018-10-03 09:23:35,184 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime 100 [2018-10-03 09:23:35,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-03 09:23:35,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-10-03 09:23:35,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-03 09:23:35,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-10-03 09:23:35,187 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-10-03 09:23:35,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:23:35,187 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-10-03 09:23:35,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-03 09:23:35,187 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-10-03 09:23:35,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-03 09:23:35,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:23:35,188 INFO L375 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-10-03 09:23:35,188 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:23:35,188 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:23:35,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1418080992, now seen corresponding path program 100 times [2018-10-03 09:23:35,188 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:23:35,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:23:35,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:35,189 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:23:35,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:23:37,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:37,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:23:37,703 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:23:37,711 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:23:37,766 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:23:37,766 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:23:37,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:23:37,954 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:37,974 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:23:37,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-03 09:23:37,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-03 09:23:37,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-03 09:23:37,975 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:23:37,975 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 103 states. [2018-10-03 09:23:38,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:23:38,226 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-03 09:23:38,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-03 09:23:38,226 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 103 [2018-10-03 09:23:38,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:23:38,227 INFO L225 Difference]: With dead ends: 107 [2018-10-03 09:23:38,227 INFO L226 Difference]: Without dead ends: 105 [2018-10-03 09:23:38,228 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime 101 [2018-10-03 09:23:38,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-03 09:23:38,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-03 09:23:38,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-03 09:23:38,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-03 09:23:38,230 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-10-03 09:23:38,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:23:38,230 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-03 09:23:38,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-03 09:23:38,231 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-03 09:23:38,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-03 09:23:38,231 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:23:38,231 INFO L375 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-10-03 09:23:38,232 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:23:38,232 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:23:38,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1010833926, now seen corresponding path program 101 times [2018-10-03 09:23:38,232 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:23:38,232 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:23:38,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:38,233 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:23:38,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:23:40,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:40,876 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:23:40,876 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 09:23:40,884 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:23:40,987 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2018-10-03 09:23:40,987 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:23:40,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:23:41,175 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:41,196 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:23:41,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-03 09:23:41,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-03 09:23:41,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-03 09:23:41,197 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:23:41,198 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 104 states. [2018-10-03 09:23:41,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:23:41,473 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-10-03 09:23:41,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-03 09:23:41,473 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 104 [2018-10-03 09:23:41,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:23:41,475 INFO L225 Difference]: With dead ends: 108 [2018-10-03 09:23:41,475 INFO L226 Difference]: Without dead ends: 106 [2018-10-03 09:23:41,475 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.3s impTime 102 [2018-10-03 09:23:41,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-03 09:23:41,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-03 09:23:41,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-03 09:23:41,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-03 09:23:41,478 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-10-03 09:23:41,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:23:41,478 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-03 09:23:41,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-03 09:23:41,479 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-03 09:23:41,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-03 09:23:41,479 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:23:41,479 INFO L375 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-10-03 09:23:41,479 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:23:41,480 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:23:41,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1271076768, now seen corresponding path program 102 times [2018-10-03 09:23:41,480 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:23:41,480 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:23:41,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:41,481 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:23:41,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:23:44,608 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:44,608 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:23:44,608 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:23:44,616 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:23:44,711 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2018-10-03 09:23:44,711 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:23:44,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:23:44,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:44,935 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:23:44,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-03 09:23:44,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-03 09:23:44,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-03 09:23:44,937 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:23:44,937 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2018-10-03 09:23:45,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:23:45,215 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-03 09:23:45,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-03 09:23:45,215 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2018-10-03 09:23:45,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:23:45,216 INFO L225 Difference]: With dead ends: 109 [2018-10-03 09:23:45,216 INFO L226 Difference]: Without dead ends: 107 [2018-10-03 09:23:45,216 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.8s impTime 103 [2018-10-03 09:23:45,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-03 09:23:45,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-03 09:23:45,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-03 09:23:45,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-03 09:23:45,218 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-10-03 09:23:45,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:23:45,219 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-03 09:23:45,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-03 09:23:45,219 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-03 09:23:45,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-03 09:23:45,219 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:23:45,219 INFO L375 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-10-03 09:23:45,220 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:23:45,220 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:23:45,220 INFO L82 PathProgramCache]: Analyzing trace with hash 748670278, now seen corresponding path program 103 times [2018-10-03 09:23:45,220 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:23:45,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:23:45,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:45,221 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:23:45,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:23:49,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:49,757 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:23:49,757 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 09:23:49,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:23:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:23:49,823 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:23:50,070 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:50,090 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:23:50,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-03 09:23:50,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-03 09:23:50,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-03 09:23:50,092 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:23:50,092 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 106 states. [2018-10-03 09:23:50,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:23:50,425 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-10-03 09:23:50,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-03 09:23:50,425 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 106 [2018-10-03 09:23:50,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:23:50,426 INFO L225 Difference]: With dead ends: 110 [2018-10-03 09:23:50,426 INFO L226 Difference]: Without dead ends: 108 [2018-10-03 09:23:50,426 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s Time 4.2s impTime 104 [2018-10-03 09:23:50,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-03 09:23:50,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-10-03 09:23:50,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-10-03 09:23:50,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-10-03 09:23:50,428 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-10-03 09:23:50,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:23:50,428 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-10-03 09:23:50,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-03 09:23:50,428 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-10-03 09:23:50,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-03 09:23:50,429 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:23:50,429 INFO L375 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-10-03 09:23:50,429 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:23:50,429 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:23:50,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1733938272, now seen corresponding path program 104 times [2018-10-03 09:23:50,429 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:23:50,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:23:50,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:50,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:23:50,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:23:54,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:54,176 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:23:54,176 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 09:23:54,184 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:23:54,238 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:23:54,239 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:23:54,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:23:54,494 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:54,514 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:23:54,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-03 09:23:54,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-03 09:23:54,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-03 09:23:54,515 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:23:54,516 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 107 states. [2018-10-03 09:23:54,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:23:54,759 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-03 09:23:54,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-03 09:23:54,759 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 107 [2018-10-03 09:23:54,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:23:54,760 INFO L225 Difference]: With dead ends: 111 [2018-10-03 09:23:54,760 INFO L226 Difference]: Without dead ends: 109 [2018-10-03 09:23:54,760 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time 3.4s impTime 105 [2018-10-03 09:23:54,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-03 09:23:54,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-03 09:23:54,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-03 09:23:54,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-03 09:23:54,762 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-10-03 09:23:54,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:23:54,762 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-03 09:23:54,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-03 09:23:54,762 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-03 09:23:54,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-03 09:23:54,762 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:23:54,762 INFO L375 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-10-03 09:23:54,763 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:23:54,763 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:23:54,763 INFO L82 PathProgramCache]: Analyzing trace with hash -2082492282, now seen corresponding path program 105 times [2018-10-03 09:23:54,763 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:23:54,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:23:54,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:54,763 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:23:54,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:23:57,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:57,265 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:23:57,265 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:23:57,274 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:23:57,385 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-10-03 09:23:57,385 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:23:57,388 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:23:57,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:57,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:23:57,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-03 09:23:57,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-03 09:23:57,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-03 09:23:57,593 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:23:57,593 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 108 states. [2018-10-03 09:23:57,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:23:57,807 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-10-03 09:23:57,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-03 09:23:57,808 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 108 [2018-10-03 09:23:57,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:23:57,808 INFO L225 Difference]: With dead ends: 112 [2018-10-03 09:23:57,808 INFO L226 Difference]: Without dead ends: 110 [2018-10-03 09:23:57,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime 106 [2018-10-03 09:23:57,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-03 09:23:57,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-10-03 09:23:57,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-03 09:23:57,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-10-03 09:23:57,810 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-10-03 09:23:57,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:23:57,810 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-10-03 09:23:57,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-03 09:23:57,810 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-10-03 09:23:57,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-03 09:23:57,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:23:57,811 INFO L375 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-10-03 09:23:57,811 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:23:57,811 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:23:57,812 INFO L82 PathProgramCache]: Analyzing trace with hash -132755168, now seen corresponding path program 106 times [2018-10-03 09:23:57,812 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:23:57,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:23:57,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:57,812 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:23:57,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:57,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:24:02,686 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:24:02,686 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:24:02,686 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:24:02,694 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:24:02,752 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:24:02,752 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:24:02,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:24:02,948 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:24:02,968 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:24:02,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-03 09:24:02,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-03 09:24:02,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-03 09:24:02,969 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:24:02,969 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 109 states. [2018-10-03 09:24:03,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:24:03,316 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-03 09:24:03,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-03 09:24:03,316 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 109 [2018-10-03 09:24:03,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:24:03,317 INFO L225 Difference]: With dead ends: 113 [2018-10-03 09:24:03,317 INFO L226 Difference]: Without dead ends: 111 [2018-10-03 09:24:03,317 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s Time 4.6s impTime 107 [2018-10-03 09:24:03,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-03 09:24:03,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-03 09:24:03,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-03 09:24:03,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-03 09:24:03,319 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-10-03 09:24:03,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:24:03,320 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-03 09:24:03,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-03 09:24:03,320 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-03 09:24:03,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-03 09:24:03,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:24:03,320 INFO L375 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-10-03 09:24:03,321 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:24:03,321 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:24:03,321 INFO L82 PathProgramCache]: Analyzing trace with hash 179553222, now seen corresponding path program 107 times [2018-10-03 09:24:03,321 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:24:03,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:24:03,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:24:03,321 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:24:03,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:24:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:24:06,672 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:24:06,673 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:24:06,673 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 09:24:06,688 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:24:06,793 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-03 09:24:06,794 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:24:06,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:24:06,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:24:07,010 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:24:07,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-03 09:24:07,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-03 09:24:07,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-03 09:24:07,011 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:24:07,011 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 110 states. [2018-10-03 09:24:07,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:24:07,282 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-10-03 09:24:07,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-03 09:24:07,282 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 110 [2018-10-03 09:24:07,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:24:07,282 INFO L225 Difference]: With dead ends: 114 [2018-10-03 09:24:07,282 INFO L226 Difference]: Without dead ends: 112 [2018-10-03 09:24:07,283 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 3.1s impTime 108 [2018-10-03 09:24:07,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-10-03 09:24:07,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-10-03 09:24:07,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-03 09:24:07,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-10-03 09:24:07,284 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2018-10-03 09:24:07,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:24:07,285 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-10-03 09:24:07,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-03 09:24:07,285 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-10-03 09:24:07,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-03 09:24:07,285 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:24:07,285 INFO L375 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2018-10-03 09:24:07,285 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:24:07,286 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:24:07,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1271178720, now seen corresponding path program 108 times [2018-10-03 09:24:07,286 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:24:07,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:24:07,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:24:07,287 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:24:07,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:24:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:24:12,385 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:24:12,385 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:24:12,385 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:24:12,392 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:24:12,496 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-03 09:24:12,496 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:24:12,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:24:12,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:24:12,710 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:24:12,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-03 09:24:12,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-03 09:24:12,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-03 09:24:12,711 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:24:12,711 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 111 states. [2018-10-03 09:24:13,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:24:13,074 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-03 09:24:13,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-03 09:24:13,075 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 111 [2018-10-03 09:24:13,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:24:13,075 INFO L225 Difference]: With dead ends: 115 [2018-10-03 09:24:13,075 INFO L226 Difference]: Without dead ends: 113 [2018-10-03 09:24:13,076 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1s Time 4.7s impTime 109 [2018-10-03 09:24:13,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-03 09:24:13,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-03 09:24:13,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-03 09:24:13,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-10-03 09:24:13,077 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 111 [2018-10-03 09:24:13,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:24:13,078 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-10-03 09:24:13,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-03 09:24:13,078 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-10-03 09:24:13,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-03 09:24:13,078 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:24:13,078 INFO L375 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2018-10-03 09:24:13,078 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:24:13,079 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:24:13,079 INFO L82 PathProgramCache]: Analyzing trace with hash 751830790, now seen corresponding path program 109 times [2018-10-03 09:24:13,079 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:24:13,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:24:13,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:24:13,079 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:24:13,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:24:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:24:16,256 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:24:16,256 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:24:16,256 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:24:16,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:24:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:24:16,324 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:24:16,528 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:24:16,548 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:24:16,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-03 09:24:16,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-03 09:24:16,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-03 09:24:16,549 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:24:16,549 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 112 states. [2018-10-03 09:24:16,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:24:16,818 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2018-10-03 09:24:16,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-03 09:24:16,819 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 112 [2018-10-03 09:24:16,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:24:16,819 INFO L225 Difference]: With dead ends: 116 [2018-10-03 09:24:16,819 INFO L226 Difference]: Without dead ends: 114 [2018-10-03 09:24:16,820 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.9s impTime 110 [2018-10-03 09:24:16,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-10-03 09:24:16,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-10-03 09:24:16,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-10-03 09:24:16,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-10-03 09:24:16,822 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 112 [2018-10-03 09:24:16,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:24:16,823 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-10-03 09:24:16,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-03 09:24:16,823 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-10-03 09:24:16,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-03 09:24:16,823 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:24:16,823 INFO L375 BasicCegarLoop]: trace histogram [110, 1, 1, 1] [2018-10-03 09:24:16,824 INFO L423 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:24:16,824 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:24:16,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1831914144, now seen corresponding path program 110 times [2018-10-03 09:24:16,824 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:24:16,824 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:24:16,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:24:16,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:24:16,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:24:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:24:20,502 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:24:20,503 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:24:20,503 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 09:24:20,510 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:24:20,570 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:24:20,571 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:24:20,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:24:20,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:24:20,786 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:24:20,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-10-03 09:24:20,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-03 09:24:20,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-03 09:24:20,789 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:24:20,789 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 113 states. [2018-10-03 09:24:21,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:24:21,107 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-03 09:24:21,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-03 09:24:21,108 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 113 [2018-10-03 09:24:21,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:24:21,108 INFO L225 Difference]: With dead ends: 117 [2018-10-03 09:24:21,109 INFO L226 Difference]: Without dead ends: 115 [2018-10-03 09:24:21,109 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time 3.4s impTime 111 [2018-10-03 09:24:21,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-03 09:24:21,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-03 09:24:21,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-03 09:24:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-03 09:24:21,112 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 113 [2018-10-03 09:24:21,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:24:21,113 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-03 09:24:21,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-03 09:24:21,113 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-03 09:24:21,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-03 09:24:21,113 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:24:21,113 INFO L375 BasicCegarLoop]: trace histogram [111, 1, 1, 1] [2018-10-03 09:24:21,114 INFO L423 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:24:21,114 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:24:21,114 INFO L82 PathProgramCache]: Analyzing trace with hash 954759750, now seen corresponding path program 111 times [2018-10-03 09:24:21,114 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:24:21,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:24:21,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:24:21,115 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:24:21,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:24:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:24:24,599 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:24:24,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:24:24,600 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 09:24:24,606 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:24:24,738 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2018-10-03 09:24:24,739 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:24:24,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:24:24,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:24:24,963 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:24:24,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-10-03 09:24:24,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-03 09:24:24,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-03 09:24:24,965 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:24:24,965 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 114 states. [2018-10-03 09:24:25,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:24:25,201 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-10-03 09:24:25,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-03 09:24:25,202 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 114 [2018-10-03 09:24:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:24:25,202 INFO L225 Difference]: With dead ends: 118 [2018-10-03 09:24:25,202 INFO L226 Difference]: Without dead ends: 116 [2018-10-03 09:24:25,202 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 3.1s impTime 112 [2018-10-03 09:24:25,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-10-03 09:24:25,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-10-03 09:24:25,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-10-03 09:24:25,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-10-03 09:24:25,205 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 114 [2018-10-03 09:24:25,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:24:25,206 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-10-03 09:24:25,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-03 09:24:25,206 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-10-03 09:24:25,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-03 09:24:25,206 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:24:25,207 INFO L375 BasicCegarLoop]: trace histogram [112, 1, 1, 1] [2018-10-03 09:24:25,207 INFO L423 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:24:25,207 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:24:25,207 INFO L82 PathProgramCache]: Analyzing trace with hash -467222688, now seen corresponding path program 112 times [2018-10-03 09:24:25,207 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:24:25,207 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:24:25,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:24:25,208 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:24:25,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:24:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:24:30,316 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:24:30,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:24:30,316 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:24:30,324 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:24:30,387 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:24:30,387 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:24:30,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:24:30,656 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:24:30,676 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:24:30,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-10-03 09:24:30,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-10-03 09:24:30,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-10-03 09:24:30,677 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:24:30,677 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 115 states. [2018-10-03 09:24:31,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:24:31,059 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-10-03 09:24:31,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-10-03 09:24:31,059 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 115 [2018-10-03 09:24:31,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:24:31,060 INFO L225 Difference]: With dead ends: 119 [2018-10-03 09:24:31,060 INFO L226 Difference]: Without dead ends: 117 [2018-10-03 09:24:31,060 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2s Time 4.8s impTime 113 [2018-10-03 09:24:31,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-03 09:24:31,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-03 09:24:31,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-03 09:24:31,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-10-03 09:24:31,062 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 115 [2018-10-03 09:24:31,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:24:31,062 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-10-03 09:24:31,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-10-03 09:24:31,062 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-10-03 09:24:31,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-03 09:24:31,062 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:24:31,062 INFO L375 BasicCegarLoop]: trace histogram [113, 1, 1, 1] [2018-10-03 09:24:31,063 INFO L423 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:24:31,063 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:24:31,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1599005306, now seen corresponding path program 113 times [2018-10-03 09:24:31,063 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:24:31,063 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:24:31,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:24:31,063 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:24:31,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:24:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:24:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:24:33,791 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:24:33,791 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 09:24:33,798 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:24:33,912 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2018-10-03 09:24:33,912 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:24:33,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:24:34,266 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:24:34,286 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:24:34,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-10-03 09:24:34,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-03 09:24:34,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-03 09:24:34,287 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:24:34,287 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 116 states. [2018-10-03 09:24:34,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:24:34,590 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-10-03 09:24:34,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-03 09:24:34,590 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 116 [2018-10-03 09:24:34,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:24:34,591 INFO L225 Difference]: With dead ends: 120 [2018-10-03 09:24:34,591 INFO L226 Difference]: Without dead ends: 118 [2018-10-03 09:24:34,591 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.3s impTime 114 [2018-10-03 09:24:34,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-03 09:24:34,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-10-03 09:24:34,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-10-03 09:24:34,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-10-03 09:24:34,593 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 116 [2018-10-03 09:24:34,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:24:34,593 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-10-03 09:24:34,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-03 09:24:34,594 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-10-03 09:24:34,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-03 09:24:34,594 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:24:34,594 INFO L375 BasicCegarLoop]: trace histogram [114, 1, 1, 1] [2018-10-03 09:24:34,594 INFO L423 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:24:34,594 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:24:34,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1970439200, now seen corresponding path program 114 times [2018-10-03 09:24:34,594 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:24:34,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:24:34,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:24:34,595 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:24:34,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:24:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:24:37,408 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:24:37,408 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:24:37,408 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:24:37,415 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:24:37,526 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2018-10-03 09:24:37,526 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:24:37,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:24:37,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:24:37,764 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:24:37,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2018-10-03 09:24:37,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-10-03 09:24:37,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-10-03 09:24:37,766 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:24:37,766 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 117 states. [2018-10-03 09:24:38,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:24:38,096 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-03 09:24:38,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-10-03 09:24:38,096 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 117 [2018-10-03 09:24:38,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:24:38,096 INFO L225 Difference]: With dead ends: 121 [2018-10-03 09:24:38,097 INFO L226 Difference]: Without dead ends: 119 [2018-10-03 09:24:38,097 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.5s impTime 115 [2018-10-03 09:24:38,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-03 09:24:38,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-03 09:24:38,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-03 09:24:38,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-03 09:24:38,099 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 117 [2018-10-03 09:24:38,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:24:38,099 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-03 09:24:38,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-10-03 09:24:38,099 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-03 09:24:38,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-03 09:24:38,099 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:24:38,099 INFO L375 BasicCegarLoop]: trace histogram [115, 1, 1, 1] [2018-10-03 09:24:38,100 INFO L423 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:24:38,100 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:24:38,100 INFO L82 PathProgramCache]: Analyzing trace with hash 954069190, now seen corresponding path program 115 times [2018-10-03 09:24:38,100 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:24:38,100 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:24:38,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:24:38,101 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:24:38,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:24:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-03 09:24:39,335 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-03 09:24:39,339 WARN L205 ceAbstractionStarter]: Timeout [2018-10-03 09:24:39,339 INFO L202 PluginConnector]: Adding new model Octopussy.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 09:24:39 BoogieIcfgContainer [2018-10-03 09:24:39,339 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-03 09:24:39,340 INFO L168 Benchmark]: Toolchain (without parser) took 236479.08 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -165.7 MB). Free memory was 1.5 GB in the beginning and 903.7 MB in the end (delta: 573.5 MB). Peak memory consumption was 407.8 MB. Max. memory is 7.1 GB. [2018-10-03 09:24:39,342 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 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 09:24:39,342 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.97 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 09:24:39,342 INFO L168 Benchmark]: Boogie Preprocessor took 20.82 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 09:24:39,343 INFO L168 Benchmark]: RCFGBuilder took 266.63 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 09:24:39,343 INFO L168 Benchmark]: TraceAbstraction took 236140.52 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -165.7 MB). Free memory was 1.5 GB in the beginning and 903.7 MB in the end (delta: 552.3 MB). Peak memory consumption was 386.7 MB. Max. memory is 7.1 GB. [2018-10-03 09:24:39,346 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 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.97 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.82 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 266.63 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 236140.52 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -165.7 MB). Free memory was 1.5 GB in the beginning and 903.7 MB in the end (delta: 552.3 MB). Peak memory consumption was 386.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 26]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 26). Cancelled while BasicCegarLoop was analyzing trace of length 119 with TraceHistMax 115, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 117 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 236.0s OverallTime, 116 OverallIterations, 115 TraceHistogramMax, 18.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 347 SDtfs, 2 SDslu, 4659 SDs, 0 SdLazy, 11444 SolverSat, 166 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13568 GetRequests, 6898 SyntacticMatches, 0 SemanticMatches, 6670 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 199.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119occurred in iteration=115, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 115 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 6.6s SatisfiabilityAnalysisTime, 204.2s InterpolantComputationTime, 13797 NumberOfCodeBlocks, 13797 NumberOfCodeBlocksAsserted, 1958 NumberOfCheckSat, 13568 ConstructedInterpolants, 0 QuantifiedInterpolants, 3135122 SizeOfPredicates, 114 NumberOfNonLiveVariables, 27246 ConjunctsInSsa, 6783 ConjunctsInUnsatCore, 229 InterpolantComputations, 1 PerfectInterpolantSequences, 0/506920 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/Octopussy.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-03_09-24-39-368.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Octopussy.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-03_09-24-39-368.csv Completed graceful shutdown